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  Subjects -> BIOLOGY (Total: 3036 journals)
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BIOLOGY (1440 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 1720 Journals sorted alphabetically
AAPS Journal     Hybrid Journal   (Followers: 22)
Achievements in the Life Sciences     Open Access   (Followers: 4)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 24)
Acta Biologica Colombiana     Open Access   (Followers: 7)
Acta Biologica Hungarica     Full-text available via subscription   (Followers: 4)
Acta Biologica Sibirica     Open Access  
Acta Biomaterialia     Hybrid Journal   (Followers: 26)
Acta Biotheoretica     Hybrid Journal   (Followers: 4)
Acta Chiropterologica     Full-text available via subscription   (Followers: 6)
acta ethologica     Hybrid Journal   (Followers: 4)
Acta Limnologica Brasiliensia     Open Access   (Followers: 3)
Acta Médica Costarricense     Open Access   (Followers: 2)
Acta Musei Silesiae, Scientiae Naturales : The Journal of Silesian Museum in Opava     Open Access  
Acta Neurobiologiae Experimentalis     Open Access  
Acta Parasitologica     Hybrid Journal   (Followers: 10)
Acta Scientiarum. Biological Sciences     Open Access   (Followers: 2)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Actualidades Biológicas     Open Access   (Followers: 1)
Advanced Health Care Technologies     Open Access   (Followers: 4)
Advanced Studies in Biology     Open Access  
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 4)
Advances in Bioinformatics     Open Access   (Followers: 20)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 7)
Advances in Cell Biology     Open Access   (Followers: 25)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 13)
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Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 6)
Advances in Ecological Research     Full-text available via subscription   (Followers: 47)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 21)
Advances in Enzyme Research     Open Access   (Followers: 9)
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Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
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Advances in Human Biology     Open Access   (Followers: 2)
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Advances in Marine Biology     Full-text available via subscription   (Followers: 16)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 23)
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Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3)
Advances in Regenerative Biology     Open Access   (Followers: 1)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 5)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Virus Research     Full-text available via subscription   (Followers: 6)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 6)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 1)
Ageing Research Reviews     Hybrid Journal   (Followers: 9)
Aging Cell     Open Access   (Followers: 11)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat     Open Access  
AJP Cell Physiology     Full-text available via subscription   (Followers: 14)
AJP Endocrinology and Metabolism     Full-text available via subscription   (Followers: 23)
AJP Lung Cellular and Molecular Physiology     Full-text available via subscription   (Followers: 3)
Al-Kauniyah : Jurnal Biologi     Open Access  
Alasbimn Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Biology Teacher     Full-text available via subscription   (Followers: 13)
American Fern Journal     Full-text available via subscription   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 10)
American Journal of Bioethics     Hybrid Journal   (Followers: 10)
American Journal of Human Biology     Hybrid Journal   (Followers: 13)
American Journal of Medical and Biological Research     Open Access   (Followers: 8)
American Journal of Plant Sciences     Open Access   (Followers: 18)
American Journal of Primatology     Hybrid Journal   (Followers: 15)
American Malacological Bulletin     Full-text available via subscription   (Followers: 3)
American Naturalist     Full-text available via subscription   (Followers: 74)
Amphibia-Reptilia     Hybrid Journal   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4)
Analytical Methods     Full-text available via subscription   (Followers: 11)
Anatomical Science International     Hybrid Journal   (Followers: 2)
Animal Cells and Systems     Hybrid Journal   (Followers: 4)
Annales de Limnologie - International Journal of Limnology     Hybrid Journal   (Followers: 1)
Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale     Full-text available via subscription   (Followers: 3)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales UMCS, Biologia     Open Access   (Followers: 1)
Annals of Applied Biology     Hybrid Journal   (Followers: 7)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18)
Annals of Human Biology     Hybrid Journal   (Followers: 4)
Annual Review of Biomedical Engineering     Full-text available via subscription   (Followers: 14)
Annual Review of Biophysics     Full-text available via subscription   (Followers: 24)
Annual Review of Cancer Biology     Full-text available via subscription   (Followers: 1)
Annual Review of Cell and Developmental Biology     Full-text available via subscription   (Followers: 37)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 16)
Annual Review of Genomics and Human Genetics     Full-text available via subscription   (Followers: 22)
Annual Review of Phytopathology     Full-text available via subscription   (Followers: 10)
Anthropological Review     Open Access   (Followers: 24)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antibiotics     Open Access   (Followers: 9)
Antioxidants     Open Access   (Followers: 4)
Antioxidants & Redox Signaling     Hybrid Journal   (Followers: 9)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5)
Anzeiger für Schädlingskunde     Hybrid Journal   (Followers: 1)
Apidologie     Hybrid Journal   (Followers: 4)
Apmis     Hybrid Journal   (Followers: 1)
APOPTOSIS     Hybrid Journal   (Followers: 8)
Applied Bionics and Biomechanics     Open Access   (Followers: 8)
Applied Vegetation Science     Full-text available via subscription   (Followers: 9)
Aquaculture Environment Interactions     Open Access   (Followers: 2)
Aquaculture International     Hybrid Journal   (Followers: 22)
Aquaculture Reports     Open Access   (Followers: 3)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 6)
Aquatic Biology     Open Access   (Followers: 5)
Aquatic Ecology     Hybrid Journal   (Followers: 32)
Aquatic Ecosystem Health & Management     Hybrid Journal   (Followers: 14)
Aquatic Science and Technology     Open Access   (Followers: 3)
Aquatic Toxicology     Hybrid Journal   (Followers: 21)
Archaea     Open Access   (Followers: 3)
Archiv für Molluskenkunde: International Journal of Malacology     Full-text available via subscription   (Followers: 3)
Archives of Biomedical Sciences     Open Access   (Followers: 7)
Archives of Microbiology     Hybrid Journal   (Followers: 8)
Archives of Natural History     Hybrid Journal   (Followers: 8)
Archives of Oral Biology     Hybrid Journal   (Followers: 2)
Archives of Virology     Hybrid Journal   (Followers: 5)
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
Arthropod Structure & Development     Hybrid Journal   (Followers: 2)
Arthropods     Open Access   (Followers: 1)
Artificial DNA: PNA & XNA     Hybrid Journal   (Followers: 3)
Artificial Photosynthesis     Open Access   (Followers: 1)
Asian Bioethics Review     Full-text available via subscription   (Followers: 2)
Asian Journal of Biodiversity     Open Access   (Followers: 5)
Asian Journal of Biological Sciences     Open Access   (Followers: 3)
Asian Journal of Cell Biology     Open Access   (Followers: 6)
Asian Journal of Developmental Biology     Open Access   (Followers: 2)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 2)
Asian Journal of Nematology     Open Access   (Followers: 4)
Asian Journal of Poultry Science     Open Access   (Followers: 4)
Australian Life Scientist     Full-text available via subscription   (Followers: 2)
Australian Mammalogy     Hybrid Journal   (Followers: 6)
Autophagy     Hybrid Journal   (Followers: 2)
Avian Biology Research     Full-text available via subscription   (Followers: 5)
Avian Conservation and Ecology     Open Access   (Followers: 13)
Bacteriology Journal     Open Access   (Followers: 2)
Bacteriophage     Full-text available via subscription   (Followers: 4)
Bangladesh Journal of Bioethics     Open Access  
Bangladesh Journal of Plant Taxonomy     Open Access  
Bangladesh Journal of Scientific Research     Open Access   (Followers: 2)
Berita Biologi     Open Access   (Followers: 1)
Between the Species     Open Access   (Followers: 1)
Bio Tribune Magazine     Hybrid Journal  
BIO Web of Conferences     Open Access  
BIO-Complexity     Open Access  
Bio-Grafía. Escritos sobre la Biología y su enseñanza     Open Access  
Bioanalytical Reviews     Hybrid Journal   (Followers: 2)
Biocatalysis and Biotransformation     Hybrid Journal   (Followers: 6)
Biochemistry and Cell Biology     Hybrid Journal   (Followers: 14)
Biochimie     Hybrid Journal   (Followers: 7)
BioControl     Hybrid Journal   (Followers: 5)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 5)
Biodemography and Social Biology     Hybrid Journal   (Followers: 1)
BioDiscovery     Open Access   (Followers: 2)
Biodiversity : Research and Conservation     Open Access   (Followers: 29)
Biodiversity and Natural History     Open Access   (Followers: 6)
Biodiversity Data Journal     Open Access   (Followers: 3)
Biodiversity Informatics     Open Access   (Followers: 1)
Biodiversity Information Science and Standards     Open Access  
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioeksperimen : Jurnal Penelitian Biologi     Open Access  
Bioelectrochemistry     Hybrid Journal   (Followers: 2)
Bioelectromagnetics     Hybrid Journal   (Followers: 1)
Bioenergy Research     Hybrid Journal   (Followers: 2)
Bioengineering and Bioscience     Open Access   (Followers: 1)
BioEssays     Hybrid Journal   (Followers: 10)
Bioethics     Hybrid Journal   (Followers: 14)
BioéthiqueOnline     Open Access  
Biofabrication     Hybrid Journal   (Followers: 3)
Biogeosciences (BG)     Open Access   (Followers: 10)
Biogeosciences Discussions (BGD)     Open Access   (Followers: 1)
Bioinformatics     Hybrid Journal   (Followers: 285)
Bioinformatics and Biology Insights     Open Access   (Followers: 15)
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Biointerphases     Open Access   (Followers: 1)
Biojournal of Science and Technology     Open Access  
Biologia     Hybrid Journal  
Biologia on-line : Revista de divulgació de la Facultat de Biologia     Open Access  
Biological Bulletin     Partially Free   (Followers: 5)
Biological Control     Hybrid Journal   (Followers: 4)
Biological Invasions     Hybrid Journal   (Followers: 17)
Biological Journal of the Linnean Society     Hybrid Journal   (Followers: 18)
Biological Letters     Open Access   (Followers: 5)
Biological Procedures Online     Open Access  
Biological Psychiatry     Hybrid Journal   (Followers: 45)
Biological Psychology     Hybrid Journal   (Followers: 6)
Biological Research     Open Access  
Biological Rhythm Research     Hybrid Journal   (Followers: 2)
Biological Theory     Hybrid Journal   (Followers: 2)
Biological Trace Element Research     Hybrid Journal  
Biologicals     Full-text available via subscription   (Followers: 9)
Biologics: Targets & Therapy     Open Access   (Followers: 1)
Biologie Aujourd'hui     Full-text available via subscription  
Biologie in Unserer Zeit (Biuz)     Hybrid Journal   (Followers: 41)
Biologija     Open Access  
Biology     Open Access   (Followers: 5)
Biology and Philosophy     Hybrid Journal   (Followers: 17)
Biology Bulletin     Hybrid Journal   (Followers: 1)
Biology Bulletin Reviews     Hybrid Journal  

        1 2 3 4 5 6 7 8 | Last

Journal Cover Aquaculture International
  [SJR: 0.613]   [H-I: 40]   [22 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1573-143X - ISSN (Online) 0967-6120
   Published by Springer-Verlag Homepage  [2355 journals]
  • Dietary ascorbic acid influences the intestinal morphology and hematology
           of hybrid sorubim catfish ( Pseudoplatystoma reticulatum × P. corruscans
           )
    • Authors: Robson Andrade Rodrigues; Cleujosí da Silva Nunes; Leticia Emiliani Fantini; Rodrigo Yutaka Dichoff Kasai; Carlos Antonio Lopes Oliveira; Hamilton Hisano; Cristiane Meldau de Campos
      Pages: 1 - 11
      Abstract: This study evaluated the effect of graded levels of dietary ascorbic acid (AA) (12.47, 20.27, 115.44, 475.50, 737.72, and 850.70 mg kg−1) on growth, hematology, intestinal morphometry, and phagocyte activity of hybrid sorubim Pseudoplatystoma reticulatum × Pseudoplatystoma corruscans. Fish (n = 420, 14.57 ± 2.71 g, 15.11 ± 0.90 cm) were distributed in 30 polyethylene tanks (80 l) (5 replicates per treatment with 14 fish per tank) and fed for 45 days. Dietary treatment did not have a significant effect on growth metrics (P > 0.05). Fish fed 737.72 mg AA kg−1 had a higher villi height (289.80 ± 19.96 μm) (P < 0.05) than fish fed 850.70 mg AA kg−1 (245.4 ± 18.25 μm). Hemoglobin in fish fed 850.70 mg AA kg−1 (5.34 ± 0.96 g dl−1) was higher (P < 0.05) than fish fed 12.47 mg AA kg−1 (3.42 ± 0.55 g dl−1) and 20.27 mg AA kg−1 (3.06 ± 1.26 g dl−1). The erythrocyte number of hybrid sorubim fed 115.40 mg AA kg−1 (1.73 ± 0.27 × 106 μl−1) and 475.50 mg AA kg−1 (1.70 ± 0.28 × 106 μl−1) were higher (P < 0.05) than in those fed diets containing 20.27 mg AA kg−1 (1.11 ± 0.34 × 106 μl−1). There was no significant effect (P > 0.05) of dietary AA on leukocyte and thrombocyte and on phagocyte activity and phagocyte index. Inclusion of AA in feed seems to increase the integrity of the intestinal mucosa and stimulate erythropoiesis in hybrid sorubim catfish.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0188-0
      Issue No: Vol. 26, No. 1 (2018)
       
  • Erratum to: Dietary ascorbic acid influences the intestinal morphology and
           hematology of hybrid sorubim catfish ( Pseudoplatystoma reticulatum × P.
           corruscans )
    • Authors: Robson Andrade Rodrigues; Cleujosí da Silva Nunes; Leticia Emiliani Fantini; Rodrigo Yutaka Dichoff Kasai; Carlos Antonio Lopes Oliveira; Hamilton Hisano; Cristiane Meldau de Campos
      Pages: 13 - 14
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0195-1
      Issue No: Vol. 26, No. 1 (2018)
       
  • Assessing the efficacy of three methionine sources in low protein and low
           fish meal diet for Chinese soft-shelled turtle, Pelodiscus sinensis
    • Authors: Fan Zhou; Ya-Qin Wang; Yi-Jiang Bei; Wing-Keong Ng; Ding-Nan Wang; Shi-Yan Li; Qing-Hui Meng; Xue-Yan Ding
      Pages: 15 - 26
      Abstract: An 8-week feeding trial was conducted to evaluate the effects of three dietary methionine (Met) sources [dl-Met, coated-Met, and a methionine hydroxy analogue calcium salt (MHA-Ca)] for Chinese soft-shelled turtle (Pelodiscus sinensis). Triplicate groups of juvenile turtles (initial weight 3.48 ± 0.03 g) were fed twice per day at 3% of body weight with positive control diet (T1, 46% protein and 46% fish meal, FM), negative control diet (T2, 43% protein and 23% FM), or three other test diets supplemented with either 0.2% coated-Met (T3), 0.125% MHA-Ca (T4), or 0.1% dl-Met (T5) to the T2 basal formulation, respectively. The feeding trial was conducted in 15 350-L plastic containers with three replicates per dietary treatment. The results showed that the highest and lowest percentage weight gain (1023.5 ± 18.2 versus 882.1 ± 14.5%) and feed efficiency (87.2 ± 0.94 versus 81.4 ± 0.4%) were observed in turtles fed the T1 and T2 diet (P < 0.05), respectively. Significant improvement in weight gain was observed in turtles fed diets with Met supplementation, irrespective of source, compared with turtles fed the T2 diet. It was observed that dietary MHA-Ca had similar efficacy compared with dl-Met in terms of growth performance and feed utilization efficiency of the turtles (P > 0.05). Protein utilization efficiency was significantly higher in turtles fed T4 or T5 diet compared to the T2 diet. Whole body protein content (17.0 to 17.4% on a wet weight basis) in turtles fed with Met-added diets was comparable to those of turtles fed the T1 diet which were significantly higher compared to T2-fed turtles. Antioxidant defense system enzymes, superoxide dismutase, and glutathione peroxidase showed the highest activity, 658.8 ± 17.9 U/mL and 642.8 ± 17.5 μmol/L, respectively, in the serum of turtle fed the MHA-Ca supplemented diet and was significantly higher compared to turtles fed the T2 or T3 diet. The present results showed that P. sinensis are able to effectively use added MHA-Ca and dl-Met in low protein and low FM diets to enhance growth, feed utilization efficiency, nitrogen retention, and antioxidant defense system enzyme activities.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0193-3
      Issue No: Vol. 26, No. 1 (2018)
       
  • Rearing river lamprey Lampetra fluviatilis (L.) larvae under controlled
           conditions as a tool for restitution of endangered populations
    • Authors: Roman Kujawa; Dorota Fopp-Bayat; Beata I. Cejko; Dariusz Kucharczyk; Katarzyna Glińska-Lewczuk; Krystian Obolewski; Mateusz Biegaj
      Pages: 27 - 36
      Abstract: A method for actively protecting river lamprey and increasing the number of river lamprey populations is presented as protocol of rearing stocking material. The objective of the study was to accommodate lamprey larvae during the most critical life period under controlled conditions until they reach a sufficient size, which will increase their chances to survive in the natural environment. The eggs obtained from wild breeders were incubated in Weiss’s jars at the water temperature of 12 °C. The larvae were reared in tanks set up in closed recirculating aquaculture systems. During the rearing period, the water temperature was 20 °C and the density of larvae was 150 individuals per 1 dm2 of bottom. In the initial rearing phase, the main focus was on the type of feeds and the nourishment method. It was determined that the most suitable feed type was Artemia nauplii combined with Hikari dry food. Additionally, the type of substrate was tested under controlled conditions. In this case, the optimum one was composed of sand of the grain size between 0.3 and 0.5 mm. The experiment proved that it is possible to successfully conduct river lamprey larvae rearing under controlled conditions. The growth rates are comparable to or better than those achieved under natural conditions. After 30 days of the rearing period, the lamprey larvae were 25 mm long. The results create a possibility to develop a technology for the restitution of river lamprey and other lamprey species, which are endangered throughout the world.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0190-6
      Issue No: Vol. 26, No. 1 (2018)
       
  • Correction to: Population genetic structure of lumpfish along the
           Norwegian coast: aquaculture implications
    • Authors: Ólöf Dóra Bartels Jónsdóttir; Julia Schregel; Snorre B. Hagen; Camilla Tobiassen; Siv Grethe Aarnes; Albert K. D. Imsland
      Pages: 61 - 61
      Abstract: The original version of this article unfortunately contained an error where the figure caption for Figures 3 and 4 was mixed.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0197-z
      Issue No: Vol. 26, No. 1 (2018)
       
  • Effect of different permeable and non-permeable cryoprotectants on the
           hatching rate of rainbow trout ( Oncorhynchus mykiss ) embryos
    • Authors: Mohammad Sudagar; Saeide Keivanloo; Abasali Hajibeglou
      Pages: 75 - 84
      Abstract: The purpose of the present study was to investigate the toxicity of cryoprotectants on the hatching rate of rainbow trout (Oncorhynchus mykiss) embryos. Epiboly and first eye pigmentation stage embryos were immersed in six permeable cryoprotectants, dimethyl sulfoxide (DMSO), glycerol (Gly), methanol (MeOH), propylene glycol (PG), ethylene glycol (EG), and acetamide (Ac), in concentrations of 1–5 M for 5 or 10 min and two non-permeable cryoprotectants, sucrose (Suc) (10%, 15%, 20%) and polyvinyl pyrrolidone (PVP) (5%, 10%, 15%) for 5 min. The embryos were then washed and incubated until hatching occurred. The toxicity of the cryoprotectant was assessed by the hatching rate. The results illustrated that permeable cryoprotectant toxicity for rainbow trout embryos increased in the order of PG < DMSO < MeOH < Gly < EG < Ac. The hatching rate of the embryos treated with permeable cryoprotectants decreased (P < 0.05) with increased concentration and duration of exposure. There were no significant decreases in hatching rate of embryos treated with sucrose and PVP with the increase of concentration; sucrose had higher hatching rates than PVP. Rainbow trout embryos at first eye pigmentation stage exhibited greater tolerance to cryoprotectants than embryos at epiboly stage.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0192-4
      Issue No: Vol. 26, No. 1 (2018)
       
  • Effects of dietary Biogen and sodium butyrate on hematological parameters,
           immune response, and histological characteristics of Nile tilapia (
           Oreochromis niloticus ) fingerlings
    • Authors: Tamer El-Sayed Ali; Abdelfattah Mohamed El-Sayed; Mohamed Abdel-Razek Eissa; Hebatollah Moustafa Hanafi
      Pages: 139 - 150
      Abstract: The present study was carried out to evaluate the use of Biogen and sodium butyrate (SB) as feed additives in the diet of Nile tilapia (Oreochromis niloticus) fingerlings, in two parallel experiments. Biogen was incorporated in isonitrogenous (35% crude protein) and isocaloric (19 MJ kg−1) diets at four levels (0.0 (control), 0.5, 1.0, and 2.0%), while SB was included at five levels (0.0 (control), 0.5, 1.0, 2.0, or 3.0%). The diets were fed to fingerling Nile tilapia (10.5 ± 0.5 g) at a daily rate of 4% of their body weight, three times a day, for 60 days. Except the lymphocytes and monocyte numbers in fish fed SB, hematological parameters, including red blood cell (RBC) hematocrit (Ht), hemoglobin (Hb), and white blood cells (WBC) were not significantly (P > 0.05) affected by dietary Biogen and SB. The lymphocytes number in Nile tilapia fed on SB increased with increasing SB up to 2% level, and decreased afterwards. Monocyte numbers showed irregular patterns. The activities of serum enzymes alanine aminotransferase (ALT) and aspartate aminotransferase (AST) of fish fed diets containing Biogen or SB were not significantly affected by dietary treatments (P > 0.05). No structural differences of tilapia liver were detected between all Biogen treatments and sodium butyrate concentrations up to 1% with control. At concentrations of 2 and 3% sodium butyrate, liver steatosis increased leading to shrinked acentric nuclei. At a concentration of 2% Biogen, some glomerulus cells had fading cytoplasm. Concerning fish fed SB diets, the structure of kidney was the same as in control except at concentration of 3% SB, where the septum between cells disappeared. No changes in gill structure were noticed at all concentrations of Biogen and SB.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0205-3
      Issue No: Vol. 26, No. 1 (2018)
       
  • Dietary β-glucans and mannanoligosaccharides improve growth performance
           and intestinal morphology of juvenile pacu Piaractus mesopotamicus
           (Holmberg, 1887)
    • Authors: Hamilton Hisano; Michelly Pereira Soares; Fabiana Golin Luiggi; Arielle Cristina Arena
      Pages: 213 - 223
      Abstract: The objective of this study was to evaluate the effect of increased levels (0.0, 0.1, 0.2, 0.4, and 0.8%) of a combination of β-glucans and mannanoligosaccharides (MOS) in isonitrogenous (23% of digestible protein) and isoenergetic (13.38 MJ of digestible energy kg-1) pacu diets, corresponding to five treatments and four replicates. A 30-day feeding trial was conducted to assess the effects on growth performance, hematological parameters, and intestinal morphology. Fish (n = 160, 30.92 ± 0.46 g) were distributed randomly in 20 aquaria (300 L) with a recirculating water system with controlled temperature (26.20 ± 0.32 °C) and fed four times a day until apparent satiation. A quadratic effect (P < 0.05) was observed for weight gain (WG), feed conversion ratio (FCR), and protein efficiency ratio (PER). The hepatosomatic and viscerosomatic indexes, hematocrit, hemoglobin, mean corpuscular volume (MCV), and mean corpuscular hemoglobin concentration (MCHC) did not show differences (P > 0.05) among treatments. Pacu fed β-glucans and MOS at 0.1 and 0.2% resulted in the greatest (P < 0.05) villus height and perimeter. The diet containing 0.2% β-glucans and MOS promoted the best growth response, feed efficiency, and intestinal morphology, without detrimental effects on the hematological parameters for juvenile pacu.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0210-6
      Issue No: Vol. 26, No. 1 (2018)
       
  • The red macroalga Gracilaria verrucosa in co-culture with the
           Mediterranean mussels Mytilus galloprovincialis : productivity and
           nutrient removal performance
    • Authors: Leila Chebil Ajjabi; Mouna Abaab; Raafa Segni
      Pages: 253 - 266
      Abstract: The feasibility of integrating seaweed cultivation with mussel culture in Bizerte lagoon (north Tunisia) was investigated during 1 year, in order to exploit mussel excretion nutrients as resource input and to reduce the risk of eutrophication. In parallel, to evaluate nutrients’ biofiltering efficiency and uptake rates of the agarophyte Gracilaria verrucosa, growth and nutrient removal from mussel culture water were investigated. In the laboratory, seaweed/mussel co-culture experiments were compared to mussel monoculture systems. The results showed that nitrogen and phosphorus concentrations in monoculture were significantly higher than those in co-culture treatments. Algal growth rate, thallus nutrient contents, and mussel mortality were different between all treatments. The mussel/seaweed biomass ratio of 1:0.28 (treatment 1) was convenient for efficient nutrient uptake and best seaweed growth. Field cultivation trials showed that G. verrucosa grew well in bivalve culturing farm in Bizerte lagoon at a maximum growth rate of 4.45% day−1 attained in spring season. The mean nitrogen content in dry thalli cultured in co-culture with mussel in Bizerte lagoon was 4.19 ± 0.81%. Results indicate that G. verrucosa can efficiently absorb the nutrients from mussel in Bizerte lagoon and can be associated with local mussel farms, mitigating eutrophication, and eventually, increasing economic incomes of farmers.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0206-2
      Issue No: Vol. 26, No. 1 (2018)
       
  • Alginic acid as immunostimulant: effects of dose and frequency on growth
           performance, immune responses, and white spot syndrome virus resistance in
           tiger shrimp Penaeus monodon (Fabricius, 1798)
    • Authors: Vianney T. Ojerio; Valeriano L. Corre; Nieves A. Toledo; Karen Grace S. Andrino-Felarca; Lovelyn Marie Nievales; Rex Ferdinand M. Traifalgar
      Pages: 267 - 278
      Abstract: Effects of dose and frequency on growth performance, immune responses, and resistance to white spot syndrome virus (WSSV) of Penaeus monodon fed diets containing alginic acid (ERGOSAN®; Schering-Plough Aquaculture, UK) were investigated. Shrimp were fed alginic acid-incorporated diets at different concentrations (0, 500, 1000, 2000, and 4000 mg kg−1) for 35 days and challenged with WSSV by immersion. Results indicate that dietary inclusion of alginic acid 1000 mg kg−1 enhances resistance of the shrimp against WSSV infection. This dose was further tested given at varying feeding frequencies (daily, once every 3 days, once every 7 days, and once every 10 days) to enhance disease resistance. Shrimp fed 1000 mg kg−1 alginic acid once every 3 days resulted to better growth and survival against WSSV infection. This enhanced resistance against infection is attributed to the enhancement of immunological responses including total hemocyte count (THC), superoxide anion (O2 −) production, and phenoloxidase (PO) activity. The present study elucidates the importance of optimum dosage and frequency of alginic acid as immunostimulant to elicit an optimum immunoprotective effects against WSSV infection in juvenile P. monodon.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0212-4
      Issue No: Vol. 26, No. 1 (2018)
       
  • Short communication: gut microbiota of European sea bass ( Dicentrarchus
           labrax ) is modulated by short-chain fructooligosaccharides and
           xylooligosaccharides
    • Authors: Inês Guerreiro; Cláudia R. Serra; Aires Oliva-Teles; Paula Enes
      Pages: 279 - 288
      Abstract: This study aimed at assessing the effect of short-chain fructooligosaccharides (scFOS), xylooligosaccharides (XOS), and galactooligosaccharides (GOS) on European sea bass juveniles gut microbiota. Four practical diets were formulated with fish meal (FM) and plant feedstuffs (PF) as protein sources (circa 30:70 of protein from FM:PF) and to include 1% of α-cellulose (control diet, CTR), or 1% of scFOS, XOS, or GOS (diets FOS, XOS, and GOS, respectively). Triplicate groups of fish with 79 g were fed with the experimental diets during 30 days. Gut content was sampled at days 7 and 30 for allochthonous microbiota characterization. Lactobacillus, Pseudomonas, Vibrio, and Burkholderia were the main genera found in fish gut. Gut allochthonous microbiota presented an increased number of operational taxonomic units (OTUs) and a higher Margalef index of bacterial richness in fish fed scFOS and XOS. Gut allochthonous microbial OTUs, Margalef species richness index, Shannon’s diversity index, and SIMPER similarity were unaffected by sampling day. In conclusion, scFOS and XOS modulated European sea bass gut microbial community and this effect persisted throughout time. These changes in gut microbiota composition contribute to explain the positive effects on growth performance, immune status, and lipid and glucose metabolism previously reported in European sea bass fed with scFOS and XOS.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0220-4
      Issue No: Vol. 26, No. 1 (2018)
       
  • Use of artificial seawater in the rearing of the fluvial prawn
           Macrobrachium yui larvae
    • Authors: Tomoyuki Okutsu; Phonenaphet Chanthasone; Phutsamone Phommachan; Aloun Kounthongbang; Oulaytham Lasasimma; Koji Hamada; Shinsuke Morioka; Sayaka Ito
      Pages: 325 - 335
      Abstract: The fluvial prawn Macrobrachium yui lives in caves during the free-swimming zoea larval stages, and the hatched larvae require cave stream water for normal development. To develop larval culture techniques for M. yui in the absence of cave stream water, we determined the relationship between salinity tolerance of hatched larvae and egg size in Macrobrachium species and tested the effect of rearing-water salinity (0, 1.5, 3.5, and 10.5 ppt) on larval survival during free-swimming zoea larval stages. When reared at 3.5-ppt salinity, the hatched larvae successfully settled on the bottom and had the highest survival, with more than 90% of the hatched larvae developing into postlarvae. This indicates that we can successfully rear the free-swimming zoea larvae using 3.5-ppt seawater in place of cave stream water (0.18- to 0.27-ppt salinities). To test the acclimation of the postlarvae to freshwater, we reared the postlarvae for 2 weeks after settling, under three treatment conditions (I: rearing at 0 ppt for 2 weeks; II: rearing at 1.7 ppt for the first week and 0 ppt for the second week; III: rearing at 3.5 ppt for 2 weeks), and compared their survival under the different conditions. The postlarvae had the highest survival (78%) in treatment II. This suggests that M. yui has the ability to gradually adapt to freshwater, after the free-swimming zoea larvae have settled on the bottom and developed into postlarvae. These results would be critically useful for larval culture of M. yui, helping to restock the wild with the larval prawns from captive stocks to maintain the endangered local population.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0218-y
      Issue No: Vol. 26, No. 1 (2018)
       
  • Suspended cultivation of the Pacific oyster Crassostrea gigas in the
           Eastern Tropical Pacific
    • Authors: C. Lodeiros; D. Rodríguez-Pesantes; A. Márquez; J. Revilla; J. Chávez-Villalba; S. Sonnenholzner
      Pages: 337 - 347
      Abstract: The Pacific or Japanese oyster, Crassostrea gigas, was introduced into Ecuador in 1990; however, little is known about its cultivation in the Eastern Tropical Pacific. This study analyzes growth and the influence of environmental factors on two cohorts of C. gigas held in pearl nets suspended from a long line, in Ayangue Bay, Santa Elena Province, Ecuador. Juveniles of 4.8 ± 0.11 mm (cohort I) and 7.3 ± 0.11 mm (cohort II) shell length remained in suspended cultivation for 7 months (beginning August 2014) and 9 months (beginning March 2015), respectively. Intra-monthly, (during the first 2 months), monthly, and bi-monthly sampling of the dorsoventral length, dry biomass of the shell and soft tissues, and the fouling on the shell were determined. Temperature (in a continuous pattern), weekly salinity, and total seston and phytoplankton biomass (chlorophyll a) were determined. Results show that available food, indicated by chlorophyll a, and temperature allowed an adequate development of oysters in culture. Growth in shell size and soft tissues increased with higher temperatures. Crassostrea gigas could reach commercial size in less than 1 year of cultivation. Results of this study demonstrate the biological potential for Japanese oyster culture along the Ecuadorian coast.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0217-z
      Issue No: Vol. 26, No. 1 (2018)
       
  • Dietary protein-to-carbohydrate ratios affect metabolism and growth of
           juvenile surubim cachara ( Pseudoplatystoma reticulatum )
    • Authors: André Fernando Nascimento Gonçalves; Natalia Ha; Jaqueline Dalbello Biller-Takahashi; Rodrigo Yukihiro Gimbo; Elisabeth Criscuolo Urbinati; Leonardo Susumu Takahashi
      Pages: 349 - 362
      Abstract: This study was conducted to evaluate the effects of dietary carbohydrates (CHO) and protein on growth performance, nutrient retention, blood metabolites, tissue energy reserves (hepatic glycogen and lipids, mesenteric fat index, and hepatosomatic index), and key metabolic enzyme activities (hexokinase, glucokinase, glucose-6-phosphate dehydrogenase, and aspartate aminotransferase) of surubim cachara (Pseudoplatystoma reticulatum). Six experimental diets containing one of two CHO levels (170 or 300 g kg−1) and three crude protein (CP) levels (360, 400, or 440 g kg−1) were fed to four replicate groups of P. reticulatum (69.2 ± 4.4 g) for 60 days. The results showed that 300 g kg−1 CHO resulted in a worse final weight (FW, 208.4 ± 26.9 g), weight gain (WG, 139.4 ± 23.9 g), specific growth rate (SGR, 1.8 ± 0.2% day−1), apparent feed conversion (AFC, 1.5 ± 0.3), and protein efficiency ratio (PER, 163.7 ± 23.4%) than fish fed 170 g kg−1 CHO (FW, 241.4 ± 37.3 g; WG, 171.9 ± 36.6 g; SGR, 2.1 ± 0.2% day−1; AFC, 1.2 ± 0.2; PER, 203.7 ± 36.9%). Fish fed 170 g kg−1 CHO showed greater retention of CP (REcp, 36.3 ± 6.9%) and energy (REge, 23.9 ± 5.6%) in their carcass than fish fed 300 g kg−1 CHO (REcp, 28.9 ± 3.9%, REge, 18.5 ± 3.7%). The highest blood glucose levels (97.7 ± 32.7 mg dL−1) were observed in fish fed the 300CHO/400CP diet, and they had a significantly lower mesenteric fat index (0.85 ± 0.26%) than fish fed with the 170CHO/400CP diet (1.25 ± 0.33%). Hepatic hexokinase activity increased in fish fed 300 g kg−1 CHO, resulting in an activity of 5.0 μmol mg−1 of protein, whereas fish fed 170 g kg−1 CHO had an activity of 3.2 μmol mg−1 of protein. These results demonstrate that dietary CHO directly affect the intermediary metabolism of P. reticulatum and feeding 300 g kg−1 CHO and 440 g kg−1 CP should be considered excessive as it results in decreased nutrient retention in the carcass and decreased growth performance despite metabolic adjustments.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0213-3
      Issue No: Vol. 26, No. 1 (2018)
       
  • Protein requirement of juvenile striped catfish, Pangasianodon
           hypophthalmus
    • Authors: Manish Jayant; Ande Penchala Muralidhar; Narrottam Prasad Sahu; Kamal Kant Jain; Asim Kumar Pal; Prem Prakash Srivastava
      Pages: 375 - 389
      Abstract: A trial was conducted to determine the dietary protein requirement for growth of juvenile striped catfish (Pangasianodon hypophthalmus). Iso-energetic semi-purified diets (~ 19.78 MJ kg−1) with six levels of protein 20% (T1), 25% (T2), 30% (T3), 35% (T4), 40% (T5), and 45% (T6) were fed to triplicate groups of fish (initial mean weight 4.27 to 4.57 g) to satiation twice daily for 60 days. Growth, feed conversion, protein utilization, intestinal digestive enzyme activities, and body composition were measured as response variables. Best growth (P < 0.05) was observed in fish fed with 40% dietary protein, and second order polynomial regression analysis (y = − 0.0011x2 + 0.0816x + 0.0642; R 2 = 0.9241; dietary protein levels as independent variable and specific growth rate as dependent variable) gave a protein requirement for growth of 37.1%. A minimum feed conversion ratio (FCR = 1.38) was found in fish fed with 35% dietary protein. Apparent net protein utilization (ANPU) was found to decrease (from 39.57 to 16.15%), with increasing dietary protein levels (P < 0.05). Protease and amylase activities were found to be in opposition to each other, with increasing dietary protein levels. The highest protease (0.59 μmol of tyrosine released min−1 mg−1 protein) and lowest amylase activities (7.99 μmol of maltose released min−1 mg−1 protein) were observed in fish fed with 40% dietary protein (P < 0.05); whereas lipase activity (P > 0.05) was found to be independent of dietary protein levels. Whole body carcass composition (except ether extract) varied with the dietary protein level, and significant higher values of moisture content (72.31%), crude protein (18.83%), and ash content (4.33%) were observed in the treatment group fed with 40% dietary protein. Hence, it may be concluded that the dietary protein requirement for growth of P. hypophthalmus juveniles is 37.1%.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0216-0
      Issue No: Vol. 26, No. 1 (2018)
       
  • Correction to: Enhancement of quality of rainbow trout ( Oncorhynchus
           mykiss ) flesh incorporating barley on diet without negative effect on
           rearing parameters
    • Authors: Julia Pinedo-Gil; Ana Tomás-Vidal; Ana María Larrán-García; Cristina Tomás-Almenar; Miguel Jover-Cerdá; Miguel Ángel Sanz-Calvo; Ana Belén Martín-Diana
      Pages: 403 - 403
      Abstract: The original version of this article unfortunately contained an error in the affiliation section.
      PubDate: 2018-02-01
      DOI: 10.1007/s10499-017-0211-5
      Issue No: Vol. 26, No. 1 (2018)
       
  • Culture environment and the odorous volatile compounds present in
           pond-raised channel catfish ( Ictalurus punctatus )
    • Authors: Stephen T. McCrummen; Yifen Wang; Terrill R. Hanson; Lisa Bott; Shaoyang Liu
      Abstract: A headspace solid-phase micro-extraction (SPME) coupled with GS-MS method was used to measure volatile compounds in fillets from musty off-flavor, muddy off-flavor, and on-flavor channel catfish (Ictalurus punctatus), along with water and soil samples from the farm ponds in which the fish had been raised. Two ponds of each type of flavor were selected, and five fish, water, and soil samples were collected from each pond. Linear and multiple linear regression analyses were carried out between/among off-flavor strength and volatile compound contents to investigate their possible correlations. The combination of two strong off-flavor compounds, 2-methylisoborneol (MIB) and geosmin (GSM), was probably mainly responsible for the musty off-flavor in the catfish fillets, and an odorous alcohol, 1-hexanol, was correlated with muddy off-flavor (p = 0.015). There was a strong correlation between beta-cyclocitral and MIB in a pond that gave musty off-flavor catfish contents (p = 0.006), suggesting that these compounds might be generated by similar cyanobacteria. The contents of GSM, MIB, and beta-cyclocitral were high in the water of ponds that yielded off-flavor fish, indicating that catfish might acquire these compounds from pond water.
      PubDate: 2018-02-06
      DOI: 10.1007/s10499-018-0247-1
       
  • Growth enhancement and protective potential of feed-based outer membrane
           proteins against vibriosis in Macrobrachium rosenbergii
    • Authors: Abdullateef Ajadi; M. Y. Sabri; A. B. Dauda; M. Y. Ina-Salwany; A. H. Hasliza
      Abstract: The use of antibiotics to curtail vibriosis, which is a major infectious disease, plaguing shrimp and prawn is rather becoming less effective and the need for a better alternative is expedient. The outer membrane proteins (OMPs) of V. alginolyticus were extracted, mixed with powdered commercial feed and fed to the prawns to evaluate its effect on growth performance and protective potential. Sixty prawns were divided into groups A, B and C of 10 prawns each, with two replicates in six (150 L) glass aquaria. Groups A, B and C were fed with OMPs mixed diet, with OMPs-Freund’s incomplete adjuvant mixed diet and OMPs or adjuvant free diet (control diet) respectively. All the prawns were weighed weekly, and haemolymph was collected to determine the total haemocyte count (THC) and phenoloxidase (PO) activity. At the end of the feeding trial, prawns were intramuscularly challenged with 50 μL of 107 CFU V. alginolyticus. The treated groups were significantly higher in growth performance and THC than the control group, but no significant difference between the groups in terms of PO activity and mortality rate. The study, however, submitted that oral administration of OMPs with or without adjuvant is a good growth promoter and has the potential for protection against vibriosis in giant freshwater prawn (Macrobrachium rosenbergii).
      PubDate: 2018-02-04
      DOI: 10.1007/s10499-018-0244-4
       
  • Correction to: Effects of dietary Biogen and sodium butyrate on
           hematological parameters, immune response, and histological
           characteristics of Nile tilapia ( Oreochromis niloticus ) fingerlings
    • Authors: Abdel-Fattah Mohamed El-Sayed; Tamer El-Sayed Ali; Mohamed Abdel-Razek Eissa; Hebatollah Moustafa Almisherfi
      Abstract: The original version of this article unfortunately contained an error in the order of author names and affiliations.
      PubDate: 2017-12-27
      DOI: 10.1007/s10499-017-0221-3
       
  • Pikeperch Sander lucioperca production in the south part of the Caspian
           Sea: technical notes
    • Authors: Bahram Falahatkar; Iraj Efatpanah; Patrick Kestemont
      Abstract: Pikeperch Sander lucioperca is an endemic species present in many rivers and lakes of Eurasian regions and also distributed in the Caspian Sea basin. This species was caught by commercial fishermen in the south part of the Caspian Sea, with the highest annual record of 4167 tons in 1931, but due to over-fishing and destruction of natural spawning areas, wild populations have completely collapsed. In order to cope with this marked decline of pikeperch stocks, the Iranian Fisheries Organization developed the artificial propagation and rearing activities for stock rehabilitation. Currently, breeders are caught from natural environments for artificial propagation with or without hormonal induction in order to produce annually millions of fingerlings for releasing into the rivers of the Caspian Sea. Although aquaculture of pikeperch is still in the phase of research and development, some carp farmers are now interested to use it for biological control of undesirable species in earthen ponds. In recent years, total annual fish landings of pikeperch in the southern part of the Caspian Sea increased to 100–300 tons, because of Iranian restocking program. However, more studies are still necessary to successfully achieve pikeperch domestication and to produce a specific formulated feed for this species, with the ultimate goal that pikeperch be adopted by Iranian commercial fish farmers.
      PubDate: 2017-12-01
      DOI: 10.1007/s10499-017-0222-2
       
 
 
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