Results: 33

Una vida controlada por la corriente: comportamiento de reotaxis del langostino de río Macrobrachium tenellum (Decapoda: Palaemonidae)

Rev. biol. trop; 72 (1), 2024
Resumen Introducción: Las corrientes de arroyos y ríos son señales naturales que influencian las migraciones en el ciclo de vida de langostinos anfídromos. Objetivo: Evaluar el comportamiento de reotaxis en juveniles y adultos de Macrobrachium tenellum, con relación a su capacidad de respuesta a...

The role of spine length in crustacean and fish associations with echinoids at Los Cabos, Baja California Sur, Mexico

Rev. biol. trop; 70 (1), 2022
Introduction: Echinoids (sea urchins) provide shelter for a variety of facultative or obligatory ectosymbionts. Objective: To evaluate the hypothesis that decapods and fishes prefer to associate with echinoid individuals and species that have longer spines. Methods: We visually studied the frequency of d...

Reproductive aspects of Grapsus grapsus (Decapoda: Grapsidae) on islands of the southeastern Gulf of California

Rev. MVZ Córdoba; 26 (1), 2021
ABSTRACT Objective. The sex ratio, proportion of ovigerous females, length at sexual maturity and fecundity of Grapsus grapsus crabs in the Lobos, Venados and Pajaros islands (southeastern Gulf of California) were analyzed. Materials and methods. Sampling was conducted monthly between March 2011 and ...

Incidence of hepatitis A and hepatitis E viruses and norovirus and rotavirus in fish and shrimp samples caught from the Persian Gulf

Foodborne viruses including hepatitis A virus (HAV), norovirus (NoV), rotavirus (RoV) and hepatitis E virus (HEV) are easily transmitted through contaminated seafoods. The current research was done to assess the incidence of RoV, NoV GI and GII,hAV and hEV in fish and shrimp samples caught from the Persi...

Áreas en riesgo de invasión por Procambarus clarkii (Decapoda: Cambaridae) un cangrejo de río introducido en Colombia

Rev. biol. trop; 69 (1), 2021
Introducción: El proceso de invasión biológica es una de las mayores amenazas a la biodiversidad y ecosistemas, con actuales y potenciales impactos en la salud pública y conservación. Procambarus clarkii es un crustáceo decápodo, originario del sur de Estados Unidos y noreste de México, que puede...

Population biology and sexual dimorphism in the freshwater prawn Atya scabra (Decapoda: Atyidae) in the Contas River, Bahia, Brazil

Rev. biol. trop; 68 (3), 2020
Introduction: Crustaceans have economic and ecological importance and the role of caridean crustaceans in lentic environments is crucial to maintain the trophic structure. The species Atya scabra is occasionally associated with fisheries, especially in Northeast and Northern Brazil. Objective: To determi...

A brief massive aggregation of pelagic swimming crabs Euphylax dovii (Decapoda: Portunidae) at Cocos Island, Costa Rica coincides with onset of El Niño event

Rev. biol. trop; 68 (supl 2), 2020
Introduction: Sporadic aggregations of decapod crustaceans can occur for various reasons and in some cases their drivers are poorly understood. Objective: Here, we present our observations of an apparently rare massive aggregation of pelagic swimming crabs, Euphylax dovi. Methods: During a research cruis...

Crustáceos (Decapoda y Stomatopoda) del R.V. Skimmer y R.V. Victor Hensen en el Golfo de Nicoya, Pacífico, Costa Rica

Rev. biol. trop; 67 (1), 2019
Resumen El acceso a datos actualizados, sobre los nombres y distribución de las especies de crustáceos presentes en un área en particular, es un primer paso para evaluar cambios debidos a factores locales, regionales o globales, como la sobrepesca, la contaminación y el cambio climático. Los datos e...

Weight-length relationships of six shrimp species caught off the Madeira Archipelago, Northeastern Atlantic

Braz. j. biol; 79 (1), 2019
Abstract Length and weight relationships and descriptive statistics are reported for six shrimp species caught off the Madeira archipelago between 1983 and 2014 using bottom and floating traps from depths ranging from 50 to 1,300 m. The parameter b ranged between 2.36 for Plesionika ensis and 2.97 for P...

Distribution and abundance of freshwater decapods in an Atlantic rainforest catchment with a dammed future

Braz. j. biol; 77 (4), 2017
Abstract Variations in physical characteristics along the course of a river influence habitat availability which reflects in species distribution. Knowledge of ecology and diversity of lotic species is important for evaluating how river ecosystems will respond to environmental impacts. Freshwater decapod...