Results: 262

Ecología de la anidación de Crocodylus acutus (Reptilia: Crocodylidae) en Bahía Portete, La Guajira, Colombia

Rev. biol. trop; 65 (1), 2017
ResumenEn Colombia, C. acutus se encuentra catalogada en peligro crítico. Durante julio 2007, agosto 2008, junio y agosto 2009 y entre marzo y agosto 2010 y 2011, la población en Bahía Portete fue estudiada para evaluar la anidación y obtener la información necesaria para el ajuste de un programa de...

Parámetros biológicos básicos para la conservación de Pseudocurimata lineopunctata (Characiformes, Curimatidae) en el Río Anchicayá, Valle del Cauca, Colombia

Rev. biol. trop; 65 (1), 2017
ResumenPseudocurimata lineopunctata representa un importante aporte nutricional para las comunidades locales en Colombia y Ecuador. A pesar que su captura anual es baja (590 kg/año), no hay restricciones sobre el tamaño mínimo, y esta especie está catalogada como vulnerable en riesgo de extinción mo...

Reproductive cycle of the endemic and threatened fish Puntius shalynius (Cypriniformes: Cyprinidae) in Meghalaya, India

Rev. biol. trop; 65 (1), 2017
Abstract:Puntius shalynius is a highly endemic freshwater minor carp that is economically important and is threatened because of its ornamental value. The present investigation evaluated this barb gonadal maturation, based on morphology and spawning of this species in the Umiam river, Meghalaya, India. T...

Oocyte distribution within and between ovary lobes is largely homogeneous in Lachnolaimus maximus (Perciformes: Labridae)

Rev. biol. trop; 65 (1), 2017
Abstract:In fish reproduction, previous information of ovary oocyte distribution is necessary, when oocytes quantitative estimates are required to estimate batch or annual fecundity. Heterogeneous oocyte distribution requires a standardized sampling protocol to prevent bias in estimates, whereas homogene...

Reproductive pattern of the large fruit-eating bat, Artibeus amplus (Chiroptera: Phyllostomidae) in the Venezuelan Andes

Rev. biol. trop; 65 (1), 2017
Abstract:Bimodal polyestry is the most common reproductive pattern in tropical bats, and it consists in producing one offspring per female twice a year. Reproductive patterns are closely related to rainfall regimes, frequently occurring twice a year in tropical regions. The goal of our study was to deter...

Reproductive biology of Sodhiana iranica (Brachyura: Gecarcinucidae) from Southern Iran

Rev. biol. trop; 65 (1), 2017
Abstract:Freshwater crab, Sodhiana iranica, is an endemic gecarcinucid crab that has been recently reported from Southern Iran. This research examined some reproductive aspects of S. iranica from Eelood freshwater spring, Southern Iran. Crabs were haphazardly sampled from April 2012 to April 2013, on a b...

The development of Panstrongylus herreri under fluctuating environmental conditions

Abstract: INTRODUCTION: Panstrongylus herreri is a main Chagas disease vector, and its success as a vector stems from its ability to establish domiciliated colonies; we aimed to explore its biology and reproduction. METHODS: The average amount of blood ingested and the time from the beginning of a blo...

Reproductive biology of the Green Ground Snake Erythrolamprus poecilogyrus sublineatus (Serpentes: Dipsadidae) in Subtropical Brazil

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT We investigated reproductive features of the dipsadid snake Erythrolamprus poecilogyrus sublineatus in the southernmost Brazilian coast, a subtropical region characterized by well-marked seasons. Females are significantly smaller than males, have a shorter tail, and reach sexual maturity at lat...

Genetic parameters in female reproductive traits of Nile tilapia (Oreochromis niloticus)

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT Genetic parameters for reproductive traits in female Nile tilapia were estimated in this study using Bayesian inference method. The data set presented information from 451 Nile tilapia females that were evaluated at two different places in Maringá - Paraná - Brazil (hapas of 1 and 10 m³) and ...

Species richness and composition of epiphytic bryophytes in flooded forests of Caxiuanã National Forest, Eastern Amazon, Brazil

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT This study aimed to compare the richness and composition of the epiphytic bryoflora between várzea and igapó forests in Caxiuanã National Forest, Brazilian Amazon. Bryophytes were collected on 502 phorophytes of Virola surinamensis. Average richness per phorophyte and composition between fore...