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Showing 1 - 200 of 724 Journals sorted alphabetically
ABCD. Arquivos Brasileiros de Cirurgia Digestiva     Open Access   (Followers: 2, SJR: 0.277, h-index: 5)
ACIMED     Open Access  
Acta Agronómica     Open Access   (Followers: 1, SJR: 0.11, h-index: 2)
Acta Amazonica     Open Access   (Followers: 3, SJR: 0.32, h-index: 18)
Acta Bioethica     Open Access   (Followers: 1, SJR: 0.131, h-index: 4)
Acta Botanica Brasilica     Open Access   (Followers: 2, SJR: 0.364, h-index: 23)
Acta botánica mexicana     Open Access   (Followers: 1, SJR: 0.251, h-index: 6)
Acta Cirurgica Brasileira     Open Access   (SJR: 0.319, h-index: 19)
Acta Limnologica Brasiliensia     Open Access   (Followers: 3, SJR: 0.29, h-index: 6)
Acta Literaria     Open Access   (Followers: 3, SJR: 0.1, h-index: 2)
Acta Medica Colombiana     Open Access   (Followers: 1)
Acta Médica Costarricense     Open Access   (Followers: 2)
Acta Neurológica Colombiana     Open Access   (Followers: 1)
Acta Ortopédica Brasileira     Open Access   (Followers: 1, SJR: 0.288, h-index: 10)
Acta Paulista de Enfermagem     Open Access   (Followers: 2, SJR: 0.242, h-index: 15)
Acta Pediátrica Costarricense     Open Access   (Followers: 1)
Acta Scientiarum. Agronomy     Open Access   (Followers: 4, SJR: 0.961, h-index: 15)
Acta zoológica mexicana     Open Access  
Actualidades Biológicas     Open Access   (Followers: 1)
African Human Rights Law J.     Open Access   (Followers: 20)
African Natural History     Open Access   (Followers: 1, SJR: 0.106, h-index: 4)
Afro-Asia     Open Access  
Ágora - studies in psychoanalytic theory     Open Access   (Followers: 3, SJR: 0.101, h-index: 2)
Agricultura Tecnica     Open Access   (Followers: 6)
Agrociencia     Open Access   (Followers: 1, SJR: 0.213, h-index: 15)
Agrociencia Uruguay     Open Access  
Agronomía Mesoamericana     Open Access  
Aisthesis     Open Access   (Followers: 4, SJR: 0.1, h-index: 1)
Alea : Estudos Neolatinos     Open Access   (Followers: 1, SJR: 0.1, h-index: 3)
Alfa : Revista de Linguística     Open Access  
Alpha (Osorno)     Open Access   (SJR: 0.114, h-index: 3)
Ambiente & sociedade     Open Access   (Followers: 2, SJR: 0.142, h-index: 8)
Ambiente & Agua : An Interdisciplinary J. of Applied Science     Open Access   (Followers: 1, SJR: 0.221, h-index: 4)
Ambiente Construído     Open Access   (Followers: 1)
América Latina en la historia económica     Open Access   (Followers: 1, SJR: 0.148, h-index: 1)
Anais Brasileiros de Dermatologia     Open Access   (Followers: 2, SJR: 0.498, h-index: 23)
Anais da Academia Brasileira de Ciências     Open Access   (Followers: 2, SJR: 0.322, h-index: 42)
Anais do Museu Paulista : História e Cultura Material     Open Access   (Followers: 1)
Anales de Medicina Interna     Open Access   (Followers: 1)
Anales del Instituto de la Patagonia     Open Access   (Followers: 1)
Anales del Sistema Sanitario de Navarra     Open Access   (Followers: 1, SJR: 0.196, h-index: 18)
Análise Psicológica     Open Access   (Followers: 1, SJR: 0.129, h-index: 3)
Análise Social     Open Access   (Followers: 1, SJR: 0.109, h-index: 8)
Andean geology     Open Access   (Followers: 13, SJR: 0.997, h-index: 25)
Annali dell'Istituto Superiore di Sanità     Open Access   (SJR: 0.318, h-index: 29)
Antipoda. Revista de Antropología y Arqueología     Open Access   (Followers: 5, SJR: 0.1, h-index: 0)
Anuario Colombiano de Historia Social y de la Cultura     Open Access   (SJR: 0.101, h-index: 1)
Anuario de Historia Regional y de las Fronteras     Open Access  
Apuntes : Revista de Estudios sobre Patrimonio Cultural - J. of Cultural Heritage Studies     Open Access   (Followers: 3)
Archivos de cardiología de México     Open Access   (Followers: 1, SJR: 0.155, h-index: 13)
Archivos de Medicina Veterinaria     Open Access   (Followers: 2, SJR: 0.199, h-index: 16)
Archivos de Neurociencias     Open Access   (Followers: 2, SJR: 0.1, h-index: 4)
Archivos de Pediatria del Uruguay     Open Access   (Followers: 3)
Archivos de Zootecnia     Open Access   (Followers: 1, SJR: 0.248, h-index: 9)
Archivos Españoles de Urología     Open Access   (SJR: 0.188, h-index: 19)
Archivos Venezolanos de Farmacología y Terapéutica     Open Access   (SJR: 0.101, h-index: 2)
ARQ     Open Access   (Followers: 4, SJR: 0.1, h-index: 2)
Arquitectura y Urbanismo     Open Access   (Followers: 2)
Arquivo Brasileiro de Medicina Veterinária e Zootecnia     Open Access   (SJR: 0.307, h-index: 22)
Arquivos Brasileiros de Cardiologia     Open Access   (Followers: 1, SJR: 0.334, h-index: 32)
Arquivos Brasileiros de Endocrinologia e Metabologia     Open Access  
Arquivos Brasileiros de Oftalmologia     Open Access   (SJR: 0.308, h-index: 19)
Arquivos de Gastroenterologia     Open Access   (Followers: 1, SJR: 0.424, h-index: 22)
Arquivos de Medicina     Open Access   (SJR: 0.1, h-index: 5)
Arquivos de Neuro-Psiquiatria     Open Access   (SJR: 0.374, h-index: 38)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arquivos Internacionais de Otorrinolaringologia     Open Access  
ARS     Open Access   (Followers: 2)
Atenea (Concepción)     Open Access   (SJR: 0.111, h-index: 3)
Atmósfera     Open Access   (Followers: 2, SJR: 0.377, h-index: 18)
Audiology - Communication Research     Open Access   (Followers: 8)
Avaliação : Revista da Avaliação da Educação Superior (Campinas)     Open Access  
Avances en Odontoestomatologia     Open Access   (Followers: 1, SJR: 0.109, h-index: 4)
Avances en Periodoncia e Implantología Oral     Open Access   (Followers: 1)
Bakhtiniana : Revista de Estudos do Discurso     Open Access  
BAR. Brazilian Administration Review     Open Access   (Followers: 1, SJR: 0.188, h-index: 6)
Biota Neotropica     Open Access   (SJR: 0.373, h-index: 18)
Biotecnología Aplicada     Open Access   (SJR: 0.122, h-index: 10)
Boletim de Ciências Geodésicas     Open Access   (SJR: 0.227, h-index: 5)
Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas     Open Access   (Followers: 1, SJR: 0.139, h-index: 4)
Boletin Chileno de Parasitologia     Open Access  
Boletín de Filología     Open Access  
Boletín de la Sociedad Botánica de México     Open Access  
Boletin de la Sociedad Chilena de Quimica     Open Access  
Boletín de la Sociedad Geológica Mexicana     Open Access   (SJR: 0.231, h-index: 8)
Boletín del Museo Chileno de Arte Precolombino     Open Access   (Followers: 1, SJR: 0.149, h-index: 1)
Bosque     Open Access   (Followers: 2, SJR: 0.256, h-index: 10)
Bragantia     Open Access   (Followers: 2, SJR: 0.522, h-index: 20)
Brazilian Archives of Biology and Technology     Open Access   (Followers: 3, SJR: 0.242, h-index: 31)
Brazilian Dental J.     Open Access   (Followers: 2, SJR: 0.47, h-index: 34)
Brazilian J. of Biology     Open Access   (Followers: 3, SJR: 0.358, h-index: 35)
Brazilian J. of Chemical Engineering     Open Access   (Followers: 3, SJR: 0.424, h-index: 32)
Brazilian J. of Food Technology     Open Access   (Followers: 3)
Brazilian J. of Medical and Biological Research     Open Access   (SJR: 0.541, h-index: 70)
Brazilian J. of Microbiology     Open Access   (Followers: 2, SJR: 0.39, h-index: 38)
Brazilian J. of Oceanography     Open Access   (Followers: 1, SJR: 0.285, h-index: 13)
Brazilian J. of Oral Sciences     Open Access   (Followers: 1, SJR: 0.145, h-index: 6)
Brazilian J. of Physical Therapy     Open Access   (SJR: 0.466, h-index: 16)
Brazilian J. of Plant Physiology     Open Access   (Followers: 3, SJR: 0.452, h-index: 32)
Brazilian J. of Veterinary Research and Animal Science     Open Access   (Followers: 8, SJR: 0.184, h-index: 10)
Brazilian Oral Research     Open Access  
Brazilian Political Science Review     Open Access  
Bulletin of the World Health Organization     Open Access   (Followers: 15, SJR: 2.819, h-index: 123)
Caderno CRH     Open Access   (SJR: 0.102, h-index: 4)
Caderno de Estudos     Open Access  
Cadernos CEDES     Open Access   (Followers: 1, SJR: 0.111, h-index: 5)
Cadernos de Pesquisa     Open Access   (Followers: 2, SJR: 0.26, h-index: 8)
Cadernos de Saúde Pública     Open Access   (Followers: 1, SJR: 0.593, h-index: 55)
Cadernos de Tradução     Open Access  
Cadernos Metrópole     Open Access  
Cadernos Nietzsche     Open Access  
Cadernos Pagu     Open Access   (SJR: 0.179, h-index: 4)
Cadernos Saúde Coletiva     Open Access   (Followers: 1)
Calidad en la educación     Open Access   (Followers: 1)
Cerâmica     Open Access   (Followers: 4, SJR: 0.19, h-index: 11)
CES Medicina     Open Access  
Chilean J. of Agricultural Research     Open Access   (Followers: 1, SJR: 0.366, h-index: 15)
Chungara (Arica) - Revista de Antropologia Chilena     Open Access   (Followers: 1, SJR: 0.49, h-index: 13)
Ciência & Educação (Bauru)     Open Access  
Ciência & Saúde Coletiva     Open Access   (Followers: 2, SJR: 0.588, h-index: 30)
Ciência Animal Brasileira     Open Access   (SJR: 0.322, h-index: 4)
Ciência da Informação     Open Access   (Followers: 1, SJR: 0.117, h-index: 7)
Ciencia del suelo     Open Access   (Followers: 2, SJR: 0.206, h-index: 13)
Ciência e Agrotecnologia     Open Access   (SJR: 0.444, h-index: 19)
Ciencia e Cultura     Open Access   (Followers: 1)
Ciencia e investigación agraria     Open Access   (Followers: 1, SJR: 0.21, h-index: 10)
Ciencia forestal en México     Open Access  
Ciência Rural     Open Access   (Followers: 2, SJR: 0.389, h-index: 24)
Ciencia y Enfermeria - Revista Iberoamericana de Investigacion     Open Access   (Followers: 3, SJR: 0.165, h-index: 7)
Ciencias Marinas     Open Access   (Followers: 2, SJR: 0.348, h-index: 21)
Ciencias Psicológicas     Open Access  
Cirugia Plastica Ibero-Latinoamericana     Open Access   (SJR: 0.175, h-index: 8)
CLEI Electronic J.     Open Access  
Clínica y Salud     Open Access   (SJR: 0.15, h-index: 3)
Clinics     Open Access   (SJR: 0.525, h-index: 36)
CoDAS     Open Access   (SJR: 0.177, h-index: 12)
Computación y Sistemas     Open Access   (SJR: 0.253, h-index: 4)
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Contexto Internacional     Open Access  
Convergencia     Open Access   (SJR: 0.112, h-index: 4)
Correo Científico Médico     Open Access  
Corrosão e Protecção de Materiais     Open Access  
Crop Breeding and Applied Biotechnology     Open Access   (Followers: 4, SJR: 0.604, h-index: 13)
Cuadernos de Economía     Open Access   (Followers: 1)
Cuadernos de Economia - Latin American J. of Economics     Open Access   (Followers: 1)
Cuadernos de Historia     Open Access   (Followers: 3)
Cuadernos de Historia de la Salud Publica     Open Access  
Cuadernos de Medicina Forense     Open Access   (Followers: 2, SJR: 0.106, h-index: 4)
Cuadernos.info     Open Access   (SJR: 0.117, h-index: 2)
Cubo. A Mathematical J.     Open Access  
Cuicuilco     Open Access   (Followers: 1)
Cultivos Tropicales     Open Access  
Culturales     Open Access   (Followers: 2)
Dados - Revista de Ciências Sociais     Open Access   (SJR: 0.429, h-index: 15)
De Jure     Open Access   (Followers: 1)
DELTA : Documentação de Estudos em Lingüística Teórica e Aplicada     Open Access   (SJR: 0.142, h-index: 5)
Dementia & Neuropsychologia     Open Access   (Followers: 4, SJR: 0.232, h-index: 10)
Dental Press J. of Orthodontics     Open Access   (Followers: 2, SJR: 0.214, h-index: 7)
Desacatos     Open Access   (Followers: 1)
Desarrollo y Sociedad     Open Access   (Followers: 3, SJR: 0.106, h-index: 2)
Diálogo Andino - Revista de Historia, Geografía y Cultura Andina     Open Access  
Diánoia     Open Access   (Followers: 1)
Dimensión Empresarial     Open Access  
Dynamis : Acta Hispanica ad Medicinae Scientiarumque Historiam Illustrandam     Open Access   (Followers: 1, SJR: 0.134, h-index: 7)
e-J. of Portuguese History     Open Access   (Followers: 1, SJR: 0.125, h-index: 2)
Eclética Química     Open Access   (Followers: 1)
Ecología en Bolivia     Open Access  
Economia Aplicada     Open Access   (SJR: 0.168, h-index: 6)
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EconoQuantum     Open Access  
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Ene : Revista de Enfermería     Open Access  
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Entomologia y Vectores     Open Access   (Followers: 2)
Escritos de Psicología : Psychological Writings     Open Access   (Followers: 2)
Estudios Atacameños     Open Access   (Followers: 2, SJR: 0.418, h-index: 8)
Estudios Constitucionales     Open Access   (Followers: 4, SJR: 0.383, h-index: 5)
Estudios de Cultura Maya     Open Access   (Followers: 3, SJR: 0.167, h-index: 1)
Estudios de Economía     Open Access   (SJR: 0.144, h-index: 7)
Estudios de historia moderna y contemporánea de México     Open Access   (SJR: 0.101, h-index: 3)
Estudios Filologicos     Open Access   (SJR: 0.105, h-index: 3)
Estudios Fronterizos     Open Access   (Followers: 1)
Estudios internacionales     Open Access   (Followers: 5)
Estudios Pedagogicos (Valdivia)     Open Access   (Followers: 2, SJR: 0.209, h-index: 7)

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Journal Cover Acta zoológica mexicana
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   ISSN (Print) 0065-1737
   Published by SciELO Homepage  [724 journals]
  • Amphibians and Reptiles associated to five land coverages, municipality of
           Dibulla, La Guajira, Colombia

    • Abstract: Resumen: Se desarrolló un estudio para determinar la composición de anfibios y reptiles del área rural del municipio de Dibulla, La Guajira, asociados a cinco coberturas de la tierra con diferentes grados de perturbación. Se realizaron 40 muestreos entre marzo y octubre de 2012, empleando técnicas estandarizadas para monitorear anfibios y reptiles (VES y Transecto de banda auditiva), sobre las coberturas de la tierra identificadas y seleccionadas. En un área de estudio de 20 km2, se registraron 22 especies de anfibios y 40 especies de reptiles, las cuales representan entre 31 y 50% de las especies registradas para la región Caribe y el Bs-t en Colombia. La cobertura Tejido urbano discontinuo (ZU), fue la cobertura que presentó mayor riqueza de especies (21 anfibios y 33 reptiles) y mayor abundancia proporcional (Hʼ = 2.83; H' max = 3.98; J' = 0.71); los valores de equidad (J') se presentaron en el rango de 0.66-0.76 entre las diferentes coberturas de la tierra. No existen diferencias significativas en la diversidad (Hʼ) entre la cobertura ZU y la cobertura Bosque fragmentado inundable con vegetación secundaria (Bfi) (t 0.05(2)18198246.5 = 1.96); la cobertura Cultivo de palma (CP) y la cobertura Mosaico de pastos y cultivos transitorios inundables con setos de árboles y arbustos (MPC) (t 0.05(2)7370.49 = 1.96). Las coberturas de la tierra que presentaron mayor relación (IJ = 0.68) fueron la asociación CP y Mosaico de Pastos enmalezados o enrastrojados con setos de árboles y arbustos (MP), mientras que la relación más baja la presentó la asociación Bfi y MP (IJ = 0.55). Los reptiles fueron el grupo más diverso y los anfibios registraron los mayores valores de abundancia durante el estudio. Éste es el primer aporte referente a la composición de la herpetofauna para esta localidad; la riqueza de anfibios y reptiles puede considerarse alta en relación con otros estudios realizados en el departamento de La Guajira, aunque la composición de anfibios y reptiles que presentaron mayor abundancia se registran como especies generalistas de amplio rango de distribución y que pueden desarrollarse en ambientes con diferentes grados de perturbación, lo cual evidencia la necesidad de estudios dirigidos a evaluar la situación de la biodiversidad en esta localidad con otros enfoques que permitan generar una interpretación más cercana al impacto de los usos del suelo sobre la coberturas de la tierra y la diversidad asociada, sin omitir cambios más complejos como la homogeneización biótica.Abstract: This study was conducted to determine the composition and structure of amphibians and reptiles of the rural municipality of Dibulla, La Guajira, associated to five land cover with different degrees of disturbance. Forty samples were made between March and October 2012 using standardized techniques for monitoring amphibians and reptiles (VES and audio strip transect), on the coverage of the identified and selected land. A total of 22 species of amphibians and 40 species of reptiles were recorded in the study area of 20 km2, representing between 31 and 50% of the species recorded for the Caribbean and Bs-t in Colombia. The coverage discontinuous urban fabric (ZU), contained higher species richness (21 amphibians and 33 reptiles) and greater proportional abundance (Hʼ = 2.83; H' max = 3.98; J' = 0.71); the values of equity (J') occurred in the range of 0.66 to 0.76 between different land coverages. No significant differences in diversity (Hʼ) between the ZU coverage and fragmented floodplain forest with secondary vegetation (Bfi) (t 0.05(2)18198246.5 = 1.96); Cultivation palm coverage (CP) and Mosaic flood grasses and temporal crops with hedges of trees and shrubs (MPC) (t 0.05(2)7370.49 = 1.96). The land coverages that had a close relationship (IJ = 0.68) were the CP association and mosaic weedy grasses with hedges of trees and shrubs (MP), while the lowest ratio was the association Bfi and MP (IJ = 0.55). The reptiles were the most diverse group and amphibians recorded the highest abundance values during the study. The present study is the first contribution concerning the composition of the herpetofauna for this location; the richness of amphibians and reptiles can be considered high in relation to other studies in La Guajira, although the composition of amphibians and reptiles showing the greatest abundance are recorded as wide distribution species and tolerant to environments with different degrees of disturbance, and are considered generalists. This shows the need for studies aimed at assessing the status of biodiversity in this locality with other approaches for generate a closer understanding of the impact of land use on land cover and diversity associated, without omitting more complex changes as biotic homogenization.
       
  • Predation by Podisus maculiventris (Say) on Choristoneura rosaceana
           (Harris) larvae

    • Abstract: Resumen: Choristoneura rosaceana (Harris) es una plaga del manzano Malus domestica Borkh. de reciente aparición en México. Su control depende básicamente del uso de insecticidas químicos; sin embargo, existen registros de enemigos naturales de esta plaga que ejercen un control considerable. El objetivo del estudio fue evaluar la capacidad de depredación de Podisus maculiventris (Say) sobre C. rosaceana. Para lo anterior, en agosto y septiembre de 2014, se recolectaron 1200 larvas de C. rosaceana en huertos de manzano. Asimismo, se recolectaron 87 especímenes del depredador P. maculiventris, de diferentes estadios ninfales, de los cuales 75 se recolectaron en huertos de manzano y 17 en parcelas de maíz, además se recolectaron 22 grupos de huevos (17 en maíz y cinco en manzano). Se realizaron ensayos de consumo de P. maculiventris sobre larvas de C. rosaceana, donde el promedio fue de 0.72 larvas consumidas por día, siendo el primer estadio ninfal el que mostró un mayor promedio de consumo (1.9 larvas/día), en las primeras 24 h y el segundo estadio mostró el mayor promedio a los 7 días (1.2 larvas consumidas/día).Abstract: Choristoneura rosaceana (Harris) is an emerging pest of apple Malus domestica Borkh., in Mexico. Its control depends mainly on the use of chemical insecticides; however, there are reports of natural enemies of this pest that exert a considerable control. The main objective of study was to evaluate the predatory capacity by Podisus maculiventris (Say) on C. rosaceana larvae. Twelve hundred larvae of C. rosaceana were collected in apple orchards. Moreover, 87 specimens of P. maculiventris Say of different nymphal instars were collected, of which 75 specimens were collected in apple orchards and 17 in corn crops, and 22 egg groups (17 in corn crops and five in apple trees). Podisus maculiventris consumption bioassays were performed over C. rosaceana larvae, where average was 0.72 larvae consumed per day, first nymphal instar showed a higher average (1.9 larvae per day) in first 24 h, and second nymphal instar showed a higher average after 7 d (1.2 larvae consumed per day).
       
  • Aphelinidae (Hymenoptera: Chalcidoidea) from Baja California Sur, Mexico,
           with description of a new species of Coccobius

    • Abstract: Resumen: En el Estado de Baja California Sur, México, se han colectado 25 especies de ocho géneros de la familia Aphelinidae. Se elaboró la lista de las especies de Aphelinidae descritas recientemente, incluyendo su distribución y especies hospederas. Se describe la nueva especie Coccobius pedicellatus Myartseva, colectada en el sur de la península.Abstract: In the State of Baja California Sur, Mexico, 25 species in eight genera of the family Aphelinidae were collected. A list of the recently known species of Aphelinidae, including host species and distribution, is given. A new species, Coccobius pedicellatus Myartseva, is described.
       
  • Evaluation of epididymal spermatic quality of hippopotamus Hippopotamus
           amphibius (Artiodactyla: Hippopotamidae) located in the Colombian Middle
           Magdalena

    • Abstract: Resumen: El hipopótamo común (Hippopotamus amphibius) es un mamífero del orden Artiodactyla, que habita en África, con una población decreciente a nivel global. Con fines de conservación genética, se han realizado procesos de biotecnología reproductiva, entre los que se reporta, la recuperación de espermatozoides por métodos como la electroeyaculación y la extracción desde epidídimos. Este mamífero es considerado una especie invasora exótica y fue introducido en Colombia en 1985; actualmente se reproduce de forma descontrolada en la región del Magdalena Medio. Como medida de control poblacional, se ha realizado la esterilización quirúrgica de algunos ejemplares. El objetivo de este estudio fue evaluar diferentes parámetros espermáticos e histológicos, relacionados con la calidad seminal epididimal de hipopótamos comunes ubicados en el Magdalena Medio, Colombia. Dos hipopótamos fueron orquiectomizados quirúrgicamente y los espermatozoides fueron recuperados por los métodos combinados de lavado retrógrado e inyección de medio. Se realizó la evaluación de la movilidad (sistema SCA(r)), la vitalidad espermática y la morfología espermática (prueba supravital), el potencial de membrana mitocondrial (JC-1), la integridad acrosómica (FITC-PNA), y la integridad estructural (SYBR14/IP) y funcional (prueba HOS) de la membrana plasmática. Asimismo, se realizó un análisis histológico de testículos y epidídimos. A excepción de la movilidad progresiva, la integridad funcional de membrana y la morfología espermática, se hallaron resultados muy similares para los parámetros de calidad seminal de ambos individuos. Las anormalidades espermáticas predominantes fueron gota citoplasmática y cola enrollada. El análisis histológico evidenció un proceso activo de espermatogénesis. Se concluye que la extracción epididimal de espermatozoides, posterior a la orquiectomía de hipopótamos comunes ubicados en un hábitat no nativo, permite obtener muestras espermáticas de buena calidad.Abstract: Common hippopotamus (Hippopotamus amphibius) is a mammal of the Artiodactyla order, living in Africa, with a declining population globally. With genetic conservation purposes, there have been processes of reproductive biotechnology, among which it is reported, recovery of sperm by methods as electroejaculation and extraction from the epididymis. This mammal is considered an exotic and invasive species was introduced in Colombia 1985; currently it reproduces out of control in the Middle Magdalena region. As a means of population control, it has performed the surgical sterilization of some specimens. The aim of this study was to evaluate different sperm and histological parameters related with epididymal semen quality of common hippopotamus located in the Colombian Middle Magdalena. Two hippopotamus were surgically orchiectomized and sperm were recovered by the combined methods of retrograde washing and medium injection. It was evaluated the sperm motility (SCA(r) system), the sperm vitality and morphology (supravital test), the mitochondrial membrane potential (JC-1), the acrosomal integrity (FITC-PNA), and the structural (SYBR14 / IP) and functional (HOS test) plasmatic membrane integrity. Also histological analysis of testis and epididymis were performed. Except for progressive motility, functional membrane integrity and sperm morphology, very similar results for semen quality parameters for both individuals were found. The predominant sperm abnormalities were cytoplasmic droplet and coiled tail. Histological analysis showed an active spermatogenesis process. We conclude that, after orchiectomy in common hippopotamus located in a non-native habitat, epididymal sperm extraction allows to obtain good quality sperm samples.
       
  • Passalus coarctatus Percheron, 1835 (Coleoptera: Passalidae):
           redescription and new distributional records

    • Abstract: Abstract: Passalus (Passalus) coarctatus Percheron, 1835 was described from Brazil without precise locality data; except for its inclusion in catalogues, nothing is known of this species and only one publication has provided specific locality data. We provide precise localities for P. coarctatus in Trinidad and Tobago, Venezuela, Brazil and Bolivia, we describe the third instar larva, discuss its taxonomic status and correct errors of previous publications.Resumen: Passalus (Passalus) coarctatus Percheron, 1835 fue descrita de Brasil sin datos precisos de localidad; exceptuando su inclusión en catálogos, no se conoce nada de esta especie y solo un trabajo publicado ha suministrado registros específicos de localidad. Proporcionamos localidades precisas para P. coarctatus en Trinidad y Tobago, Venezuela, Brasil y Bolivia, describimos la larva de tercer estadio, discutimos su estatus taxonómico y enmendamos errores de publicaciones anteriores.
       
  • Frequency of tail loss in assembly lizards of Oaxaca, Mexico

    • Abstract: Resumen: El presente estudio evaluó la influencia de la edad, el sexo y el hábitat sobre la frecuencia de pérdida de la cola en tres especies de lagartijas endémicas a México. Los taxa tratados son Sceloporus bicanthalis, S. subpictus y Mesaspis gadovii, las cuales son simpátricas en las montañas de los Valles Centrales de Oaxaca. Las diferencias en la frecuencia de pérdida de la cola fueron evaluadas por sexo, edad, hábitat y especie mediante una prueba de Chi cuadrada en un tamaño de muestra de 259 organismos recolectados entre abril de 2010 y marzo de 2011. Los resultados indican que la estructura del hábitat, el sexo o la edad de los individuos (excepto en M. gadovii) no influyeron de manera significativa en la frecuencia de mutilación de la cola en las tres especies analizadas. Sin embargo, se presentaron diferencias significativas entre especies, estas diferencias pueden ser consecuencia del comportamiento agonístico propio de cada especie, y de una presión de depredación diferente para cada taxon.Abstract: The present study evaluated the influence of age, sex and habitat on the frequency of tail loss in three species of endemic lizards to Mexico. The treated taxa are Sceloporus bicanthalis, S. subpictus and mesaspis gadovii and are sympatric in the mountains of the Central Valley of Oaxaca. The differences in the frequency of tail loss were evaluated by sex, age, habitat and species by Chi square test on a sample size of 259 organisms collected between April 2010 and March 2011. The results indicate that habitat structure, sex or age of individuals (except in Mgadovii) did not influence significantly in the frequency of mutilation of the tail in the three species analyzed. However, significant differences between species occur, these differences may be the result of agonistic behavior of each species, and of a pressure of predation different for each taxon.
       
  • Military macaw ( Ara militaris ) in Sierra
           Gorda, Guanajuato, Mexico

    • Abstract: Abstract: I report a new displacement route of the Military macaw (Ara militaris) population located in Sotano del Barro (Querétaro) to the northeastern Guanajuato. This record suggests that Military macaw perform seasonal movements in search of foraging areas between the Sotano del Barro in Xichú (Guanajuato), my study area. Therefore, the presence of Military macaw in the region would have direct implications for policy change in land use, which directly affects the land management of the Sierra Gorda Biosphere Reserve.
       
  • Great kiskadee ( Pitangus sulphuratus ) in the
           Mexican Highland Plateau

    • Abstract: Abstract: The Great kiskadee (Pitangus sulphuratus) has a continuous distribution in both slopes of Mexico, mainly in tropical zones. As a result of monthly samplings from December 2006 to August 2013, we report the occurrence of this species in eastern Aguascalientes and the Highland Plateau region of San Luis Potosi. Based on these records, we suggest that this species can be considered as a resident for this region, thus suggesting that its geographic distribution could be extended to the central plateau of Mexico.
       
  • First record of Eleutherodactylus nivicolimae (Amphibia:
           Eleutherodactylidae) for the state of Michoacán, México

    • Abstract: Abstract: We report the first record of Eleutherodactylus nivicolimae for the state of Michoacán, extending the distribution range of this species.
       
  • Diet of Cyclura nubila nubila Gray, 1831 (Squamata: Iguanidae) in two cays
           of Jardines de la Reina archipelago, Cuba

    • Abstract: Abstract: Cyclura nubila nubila is an endemic subspecies of Cuba and it has been listed as Vulnerable in the IUCN Red List. The present investigation was developed in November 2013 and February 2014 in Caguamas and Palomo cays, respectively. Thirty-seven fecal pellets were collected through fixed transects on sandy coast vegetation and subsequently moistened with water and alcohol to separate and identify diet's components. Nine species of plants in Caguamas and four in Palomo were identified as part of iguana's diet. The most frecuent plant species were Conocarpus erectus, Setaria parviflora and Thalassia testudinum in Palomo and Cochorus hirsutus in Caguamas. In Palomo 45% of fecal pellets contained corporal parts of dragonflies and 5% parts of crabs. The consumption of animal matter is due to the low floristic diversity of Palomo cay. The iguana's diet in Caguamas included more plant components mainly fruits. This study contributes to increase knowledge of trophic ecology and management of the species in the archipelago of Jardines de la Reina.
       
  • New herpetofaunistic records for the municipality of Tezontepec de Aldama,
           Hidalgo, Mexico

    • Abstract: Abstract: This work presents six new records of herpetozoans for the municipality of Tezontepec de Aldama, Hidalgo.
       
  • Confirmation of the presence of rattlesnake Crotalus scutulatus for the
           State of Mexico, Mexico

    • Abstract: Abstract: We present a new record of rattlesnake Crotalus scutulatus collected in the county of La Paz, Mexico, that confirms the presence of the species for the Mexican state of Mexico. There is a dubious prior record of a specimen collected on 1967. Either way this species has not been collected again until now.
       
  • Noteworthy record of Aramides axillaris (Gruiformes, Rallidae) in the edge
           of Sierra Sur of Oaxaca, Mexico

    • Abstract: Abstract: Through the use of camera traps we recorded the presence of an individual of the rufous-necked wood rail (Aramides axillaris) on the edge of Sierra Sur and coastal plains of the Pacific in the state of Oaxaca. This record is remarkable for two reasons: the altitude and the vegetation, so the present record is the highest for Mexico (834 msnm) and the first for semideciduous tropical forest.
       
  • Gastrointestinal parasites determination in carnivore species of Central
           Mexico

    • Abstract: Abstract: We report gastrointestinal parasites for three carnivore species in the region of Tehuacán, Central Mexico.
       
  • A dung beetle in Mexico City: the case of Ceratotrupes fronticornis
           (Erichson) (Coleoptera: Geotrupidae)

    • Abstract: Resumen: Ceratotrupes fronticornis (Erichson) es un escarabajo estercolero de tamaño mediano, perteneciente a la subfamilia Geotrupinae (Coleoptera: Scarabaeoidea: Geotrupidae). Es endémico de México, distribuyéndose en la zona montañosa alta del Sistema Volcánico Transversal. En esta nota señalamos la presencia de esta especie en dos áreas urbanas (Cuajimalpa y Magdalena Contreras) de la Ciudad de México. Adicionalmente, recalcamos la plasticidad ecológica de C. fronticornis en ambientes urbanos, al utilizar una fuente de alimento alternativa y abundante como es el excremento de perro doméstico.
       
  • First record of Opsius stactogalus (Fieber, 1866) (Hemiptera:
           

    • Abstract: Abstract: This is the first report of Opsius stactogalus (Hemiptera: Cicadellidae) in Tamarix chinensis, a native specie from Europe. It was found on Federal Zone of Lake Texcoco from State of México, Mexico.
       
  • First report of four coprophagous beetle species (Coleoptera:
           Scarabaeinae) in El Salvador

    • Abstract: Abstract: We present the first records of four species of Scarabaeinae: Canthidium pseudopuncticolle, Canthon femoralis, Uroxys deavilai and Uroxys microcularis, in El Salvador. We collected the specimens, using feces and carrion baited traps in three zones in the National Park El Imposible in the Southwest of the country. With this report, we contribute to the knowledge of the dung beetle fauna of El Salvador.
       
  • Deloya, A.C. & D. Covarrubias Melgar (Eds.). 2014. Escarabajos del estado
           de Guerrero (Coleoptera: Scarabaeoidea)

    • Abstract: Abstract: We present the first records of four species of Scarabaeinae: Canthidium pseudopuncticolle, Canthon femoralis, Uroxys deavilai and Uroxys microcularis, in El Salvador. We collected the specimens, using feces and carrion baited traps in three zones in the National Park El Imposible in the Southwest of the country. With this report, we contribute to the knowledge of the dung beetle fauna of El Salvador.
       
 
 
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