Publisher: SEAMEO BIOTROP (Total: 1 journals)   [Sort by number of followers]

Showing 1 - 1 of 1 Journals sorted alphabetically
Biotropia : The Southeast Asian J. of Tropical Biology     Open Access   (SJR: 0.128, CiteScore: 0)
Similar Journals
Journal Cover
Biotropia : The Southeast Asian Journal of Tropical Biology
Journal Prestige (SJR): 0.128
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0215-6334 - ISSN (Online) 1907-770X
Published by SEAMEO BIOTROP Homepage  [1 journal]
  • SECONDARY METABOLITE OF SUMBAWA ALGAE AND ITS POTENTIAL AS NATURAL
           PRESERVATIVE CANDIDATES (AN ANTIMICROBIAL STUDIES)

    • Authors: Baso Manguntungi, Arlinda Puspita Sari, Ariandi Ariandi, Leggina Rezzy Vanggy, Robby Erlangga, Muhammad Abdi Mahesa
      First page: 95
      Abstract: Pathogenic bacterial contamination was a serious matter due to its capability in reducing food quality and health. This study aimed to select various types of algae in Luk Coast, Sumbawa Regency that have the potential to produce antibacterial compounds for natural food preservatives. Algae on Luk Coast was identified by means of morphological characters, followed by sample preparation and extraction of secondary metabolites (bioactive compounds). Algae extracts were used in antibacterial tests against food spoilage bacteria, such as Escherecia coli, Staphylococcus aureus, Salmonella thypi, Enterobacter cloacae and Pantoea agglomerans. Five types of algae identified were Padina sp., Halimeda opuntia, Sargassum horneri, Sargassum crassifolium and Galaxaura rugose. The five algae have the growth-inhibiting ability toward the tested bacteria. The highest inhibition zone was obtained from the 100% algae extract concentration.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1625
      Issue No: Vol. 29, No. 2 (2022)
       
  • MERCURY CHLORIDE (HgCl2) EXPOSURE CHANGES THE HISTOPATHOLOGICAL FIGURE OF
           EYE AND BRAIN OF TILAPIA FISH (Oreochromis mossambicus)

    • Authors: Dwinna Aliza
      First page: 103
      Abstract: Mercury pollution brings harmful effects to aquatic animals, the environment and eventually to human health. Mercury accumulates in the liver, kidney, eye lens and brain of fish, resulting in organ damage. This study aimed to determine the effect of HgCl2 exposure on anatomical pathology and histopathology of tilapia fish eye and brain. A total of 36 male tilapia fish were allotted into 4 treatment groups with 3 replications. Fish were exposed to 0.00, 0.25, 0.50, and 0.75 ppm of HgCl2 for 10, 20, and 30 days. Subsequently, the anatomical pathology was observed followed by histopathological examination. Anatomical pathology examination of fish eye on day 30 showed white membrane on the eye lens surface, pupil diminution, and sunken eyes. The brain demonstrated hemorrhage, necrosis, discolorations, and granulated area. The retina showed necrosis, retina pigmentation flexiform layer widened, and cone cell atrophy. Brain depicted structural and cellular damage such as degeneration necrosis and vacuolation. HgCl2 exposure changes the anatomical pathology and histopathology of tilapia fish eye and brain.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1634
      Issue No: Vol. 29, No. 2 (2022)
       
  • DRAGONFLIES DIVERSITY AND LAND COVER CHANGES IN THE BATUBOLONG RIVER, WEST
           LOMBOK DISTRICT

    • Authors: Muhammad Zulhariadi, Raden Dedi Irawan, Aulia Zulfaeda, Nurul Hidayani
      First page: 112
      Abstract: West Lombok District is the second largest district in Lombok Islands. The diversity of dragonflies (Order Odonata) as a bioindicator of environmental quality has not been widely studied in the West Lombok region. This study aimed to determine the species diversity of dragonflies (Order Odonata) found in Batubolong River, West Lombok District and its relation to the occurring land cover changes. This study was carried out by using a descriptive explorative method, where the sampling technique was done by means of line transects. Maps of study and sampling locations as well as land cover changes were made using ArcGIS 10.4.1 software based on primary and secondary data. The results showed that there were 11 species of dragonflies with a Shannon-Wiener diversity index value (H') of 2.212 (medium diversity), a population density index (C) of 0.126 (low dominance), and a species evenness index (E) of 0.923 (high uniformity). Our study also found two rare species of dragonfly in Lombok Island i.e., 3 individuals of Nososticta emphyla (Lieftinck, 1936) with 9% relative abundance and 1 individual of Drepanosticta berlandi (Lieftinck, 1939) with 3% relative abundance. The discovery of D. berlandi in Lombok is the third time after the findings in 1896 and the 19th century. Analysis of satellite data around the sampling area within the period 2013-2020 showed that there has been an increase in land cover of 6,149.29 m2. The increase in land cover changes may have caused the disappearance of several Odonata species in the sampling location.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1637
      Issue No: Vol. 29, No. 2 (2022)
       
  • DEVELOPMENTAL MORPHO-ANATOMY AND GERMINATION OF THE SEEDS OF Pterocarpus
           indicus f. echinatus Willd. VARIANTS

    • Authors: Kate Capiltan, Lerma Maldia, Marilyn Quimado, Crusty Tinio, Marilyn Combalicer
      First page: 124
      Abstract: Previous studies on the embryo structure of legumes species had resulted in the division of the Fabaceae family into two great subfamilies based on embryo axis curvature. Research on seed morphology and anatomy adds to the knowledge of taxonomy, evolution and ecology. This study determined the seed developmental anatomy, pod and seed morphology as well as germination characteristics of the observed variants (T1 - small prickles; T2 - medium prickles; T3 - long prickles) of Pterocarpus indicus Willd. f. echinatus locally known as prickly narra in the Mount Makiling Forest Reserve (MMFR). Based on the anatomy of the root (radicle) and shoot apex, the formation of the leaf primordium in T2 seeds after radicle protrusion was more progressive. It was observed that the germination rate and the percentage were the highest in T2, where the apical dome was welldeveloped. The germination, pod and seed morphological characters as well as seed anatomical characters were proven to be systematically informative by showing significant differences among the variants.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1656
      Issue No: Vol. 29, No. 2 (2022)
       
  • MACROZOOBENTHIC COMMUNITY STRUCTURES IN SEAWEED CULTURE PONDS IN MUARA
           GEMBONG ESTUARY, BEKASI , WEST JAVA PROVINCE, INDONESIA

    • Authors: Raden Indarjani, Siti Nurhayati
      First page: 134
      Abstract: The study of macrozoobenthic in seaweed culture in Muara Gembong Estuary, Bekasi District, West Java Province, was conducted in May to July 2018. The study was aimed at understanding the roles of macrozoobenthic organisms as ecosystem engineering in seaweed habitat by identifying macrozoobenthic community structures using various biological indices. Sampling sites were conducted at three selected intertidal ponds used for seaweed culture at different distances and perpendicular to the coastline. Samples of macrozoobenthic organisms were collected using an Ekman grab during low tide periods. The study results showed that the macrozoobenthic community from the three ponds were consisted of 9 major benthic families and 14 genera with a total of 139 individuals. The results also showed that gastropod of the genus Cerithiidae was the dominant taxa found in every pond which contributed to 42.45% of the total macrozoobenthic found in the three ponds and became the main contributing taxa to the macrozoobenthic community structure. In addition, genus Platynereis of the Polychaeta Class was found to be another important taxon which contributed to 14.39% of the total macrozoobenthic found in the three ponds. The genus Platynereis were mostly found in the second pond with muddy coarse sandy sediment substrate containing more silt compared to the other two ponds. The rare taxon was the genus Lithophaga from family Mytilidae represented by 1 individual. Our study concluded that the macrozoobenthic community structure in the three ponds was categorized as poorly diverse indicating that the pond system was unstable. The Shannon-Wiener Diversity Index (H’) was only 0.87 on average with the highest diversity index (H’=1.47) was found in the third pond located at the farthest area of the coastline. Meanwhile, the average of Evenness Index was 0.34 indicating that the distribution of the taxa was uneven with a tendency of being dominated by certain taxa.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1664
      Issue No: Vol. 29, No. 2 (2022)
       
  • DISTRIBUTION PATTERN AND DIVERSITY OF EPIPHYTIC ORCHIDS IN THE CURUG
           CIBEREUM PATH, MOUNT GEDE PANGRANGO, INDONESIA

    • Authors: Bela Prapitasari, Ardyan Pramudya Kurniawan
      First page: 142
      Abstract: The Curug Cibereum path as a tourist attraction in the Mount Gede Pangrango area is dominated by a lush tree, making it a suitable place to find a diversity of epiphytic orchids. This study aimed to determine the distribution pattern and diversity of epiphytic orchids along the Curug Cibereum path which is influenced by environtmental parameters. The research method was carried out by plotting ten plots on the right and left sides of the path, with each plot measuring 500 x 5 m and the distance between plots was 100 m. The results showed that there were 31 species of epiphytic orchids from 12 genera. The distribution pattern of epiphytic orchids was mostly clustered except for Oberonia lotsyana, which had a uniform pattern. The epiphytic orchid species with the highest INP were Bulbophyllum gibbosum with an INP value of 35% and Coelogyne speciosa with an INP value of 20%. Species diversity (H ') was moderate (H '=2.54), the evenness index (E) was high (E=0.73), the dominance index (D) was low (D=0.13). The measurements of environmental parameters showed optimal conditions for the growth of epiphytic orchids, namely with a temperature of 24.5 oC, soil moisture of 76.5%, air humidity of 70%, pH 5.1, the light intensity of 6351 lux and wind speed of 0.03 m/s.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1680
      Issue No: Vol. 29, No. 2 (2022)
       
  • PREGNANT AND LACTATING Macaca nigra: BEHAVIOR AND FOOD SELECTION

    • Authors: Dyah Perwitasari-Farajallah, Arismayanti Eka , Qomariah Indira Nurul , Pasetha Andre , Astuti Dewi Apri , Waterman James O.
      First page: 150
      Abstract: Pregnancy and lactation are reproductive phases that require large amounts of energy. Females in the reproductive period need good quality and quantity of food to provide nutrition for the fetus, milk production and child care. The mother will adapt to changes in behavior patterns and food type to meet these needs. The influence of parity and environmental conditions can affect the behavior patterns of females. During pregnancy, the Macaca nigra is known to have different proportion of activities in each period, while the behavior during the lactation phase in each mester is unknown. Therefore, this study aimed to analyze the behavior patterns in each mester and the food selection of Macaca nigra during the pregnancy and lactation phases, as well as the influence of female parity and environmental toward the behavior patterns. There were 39 females Macaca nigra observed from two groups from August 2018 to July 2019. An instantaneous focal sampling method was performed to observe females’ daily activities, continuous focal sampling to monitor food types and a selectivity index to analyze food type preferences. The results showed that the female Macaca nigra pattern was influenced by the reproductive phase, female parity and environmental conditions. Females at the end of the pregnancy and lactation phases had a high proportion of feeding and eat more arthropods. Primiparous females mostly performed resting activities. Food preference was influenced by reproductive factors and food availability. The choice of fruit could be affected by fruit availability, and their favorite food was D. mangiferum and Euginia sp.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1687
      Issue No: Vol. 29, No. 2 (2022)
       
  • MONITORING FOREST AREA CHANGE USING QUICKBIRD

    • Authors: SRI ENDAYANI, ANDREW STEFANO, FATHIAH, PURBAWATI, IDA ROSANTI
      First page: 161
      Abstract: A study was conducted to compare the urban forest management in three urban forests in Samarinda City. The application of GIS (Geographic Information System) is one of the alternatives to conduct a variety of processes such as: providing geographical information system, identifying the areas of urban forests in Samarinda, helping to plan the process of map digitalization and performing overlay process. The main method used for the data analysis process on the map was the overlay process data analysis technique. The research findings showed that: 1) the appointment of urban forests as the initial step of urban forest development needed more implementation from the government; 2) the urban forest determination needed more socialization to the owner of the urban forest and the public in 1992 and 2019; 3) the urban forests needed more management. There were some similarities and differences in the management of urban forests in the three study locations. The similarities among the three locations were that the three locations had already met the minimum standards of one urban forest location even though there was still one location outside of these three locations which did not meet the minimum standard. The differences were in managing the urban forests. These differences indicated that the urban forest policy was not fully implemented in Samarinda City.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1690
      Issue No: Vol. 29, No. 2 (2022)
       
  • COMMUNITY STRUCTURE OF BENTHIC FORAMINIFERA IN EASTERN WATERS OF SEGARA
           ANAK LAGOON IN CILACAP

    • Authors: TJAHJO WINANTO, PETRUS HARY TJAHJA , AMRON, TAUFAN HARISAN, HENDRAYANA
      First page: 171
      Abstract: Benthic foraminifera are types of organisms that are sensitive to environmental changes, so they are often used as a bioindicator for aquatic environmental conditions. The purpose of this study was to determine the community structure of benthic foraminifera community, sediment types and the relationship between the abundance of foraminifera with the sediment types in the eastern waters of Segara Anakan Lagoon in Cilacap. Method used in this study was a survey method. Samples were taken by using random sampling method. The study was conducted at 5 stations with 3 repetitions. Laboratory observations carried out included the types and numbers of benthic foraminifera. Community structure of foraminifera among stations were analyzed using one-way ANOVA, while the relationship between community structures and water quality parameters was analyzed using Pearson correlation. The results showed that in the the eastern waters of Segara Anakan Lagoon there were 58 species of foraminifera which abundance ranged from 532 ind/m2 to 927 ind/m2. The diversity index of foraminifera was in the medium to high diversity categories. The uniformity index of foraminifera was in the high uniformity in a stable community. The dominance index of foraminifera was in the low category. The sediment types was fine sand, medium sand and coarse sand. The relationship between the abundance of foraminifera with the sediment types was strong with high R values (0.763-0.809).
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1703
      Issue No: Vol. 29, No. 2 (2022)
       
  • AGEING AND THE AMOUNT OF DNA EXTRACTED FROM BAWEAN DEER (A xis kuhlii )
           FECES

    • Authors: Adi Nugroho, Denni Susanto, Sena Adi Subrata
      First page: 181
      Abstract: Noninvasive genetic sampling is the most reliable approach to collect endangered species which are typically rare and elusive. However, the approach is hampered by poor quality and quantity of DNA amount, and therefore, a pilot study is required. Our current short communication article reports the first noninvasive genetic sampling approach using feces of critically endangered Bawean deer (Axis kuhlii) to test the effect of aging on the amount of DNA extraction. Fecal samples of the Bawean deer were collected from the Bawean Deer Captive Unit in Sangkapura Village, Bawean Island, East Java. The samples were grouped into two different categories, namely: 1) New samples: for feces that had just been expelled for less than a day and 2) Old samples: for feces that were estimated to have been expelled for more than a day. There were 11 New samples and 16 Old samples. The samples were extracted using the QIAGEN Mini Stool Kit. The DNA quantification was carried out by using a fluorometer. The results of the extraction between the two categories were analyzed by the Kruskal Wallis test. The results showed that the mean rank value of the New samples was better (15.27) than the Old samples (13.13). The P value of the Kruskal Wallis test, however, was higher than the Asymp significant value, indicating that there was no meaningful differences (P = 0.49) between the two samples categories. The work described in this short communication article is a preliminary result and an important step in the study of Bawean deer population genetic.
      PubDate: 2022-08-26
      DOI: 10.11598/btb.2022.29.2.1709
      Issue No: Vol. 29, No. 2 (2022)
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 18.232.56.9
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-