Results: 34

Chemical elements in sediments and in bivalve mollusks from estuarine regions in the south of Bahia State, northeast Brazil

Braz. j. biol; 83 (), 2023
Abstract Estuaries receive daily inputs of chemical elements which can impact the quality of water and sediment, as well as the health of biota. In addition to the sediment, bivalve mollusks have been used in the chemical monitoring of these systems. This study investigated the presence and contents of A...

Environmental influences on the ichthyoplankton in hypersaline estuaries located in a Semiarid Northeastern Brazilian coast

Neotrop. ichthyol; 20 (1), 2022
Hypersaline estuaries are commonly found in the Semiarid Northeast Brazilian coast. However, the utilization of these estuaries by early life stages of fishes is less well documented. This study aimed to evaluate the effects of environmental factors on the ichthyoplankton, and to describe their spatial a...

Hábitos alimentarios de tres especies de peces lenguados (Pleuronectiformes: Achiridae) en la Bahía de Buenaventura, Pacífico Colombiano

Rev. biol. trop; 69 (3), 2021
Resumen Introducción: La dinámica de las condiciones ambientales influencia la variación del alimento disponible para los organismos estuarinos, afectando el consumo de alimento de los organismos bentónicos como los lenguados, esenciales para establecer y monitorear la calidad ambiental en estos ecos...

Parasitic monogenoideans of Sciades herzbergii as bioindicators of environmental quality in amazonian estuarines ecosystems

Abstract This study evaluated the use of gill parasitic monogenoideans from Sciades herzbergii (Siluriformes: Ariidae) as bioindicators of environmental quality in Amazonian estuarine ecosystems. Fish were caught in the tidal channels in an impacted area - IA, near the port of São Luís and a reference ...

Estado actual de Melongena melongena (Mollusca: Gastropoda) en la bahía de Cispatá, Caribe Colombiano
Current status of Melongena melongena(Mollusca: Gastropoda) in Cispatá Bay, Colombian Caribbean

Rev. MVZ Córdoba; 25 (2), 2020
RESUMEN Objetivo. Evaluar el estado actual de Melongena melongena en la bahía de Cispatá, Caribe Colombiano a través de los aspectos poblacionales de la especie. Materiales y métodos. Se establecieron tres sectores de muestreo, conforme con la zonificación de los manglares en la bahía. Para la re...

Haematology of Mugil curema from the north coast estuary of Santa Catarina state, Brazil

Rev. bras. ciênc. vet; 27 (3), 2020
Mugil curema is a teleost fish often found in coastal, estuarine and lagoon regions throughout the Brazilian coast. Blood parameters may be used as health and welfare indicators of the fish, as well as the environment they live in. The aim of this study was to verify the hematologic profile of the M.cure...

Intra-annual variation in rainfall and its influence of the adults Cyprideis spp (Ostracoda, Crustacea) on a eutrophic estuary (Guanabara Bay, Rio de Janeiro, Brazil)

Braz. j. biol; 80 (2), 2020
Abstract Spatial and temporal distribution of two species of adult´s ostracods (Cyprideis sp. and Cyprideis salebrosa) were studied as a function of the rainfall patterns in the Guanabara Bay, Rio de Janeiro, Brazil. Samples were taken in ten stations, along six surveys representing three periods (Dry, ...

Efeitos tóxicos dos sedimentos do estuário do rio Capibaribe em embriões de zebrafish (Danio rerio)

O presente estudo utilizou embriões de Danio rerio expostos aos elutriatos dos sedimentos estuarinos do rio Capibaribe, dos períodos chuvoso e seco, e analisou os efeitos letais, teratogênicos, bem como a frequência cardíaca. Os testes de toxicidade com os embriões seguiram as diretrizes da OECD 23...

Perkinsus sp. infecting three important mollusks from Jaguaribe River estuary, Ceará, Brazil

This work investigated the occurrence of Perkinsus sp. in clam Anomalocardia brasiliana, oyster Crassostrea sp. and mussel Mytella falcata from the Jaguaribe River estuary, northeastern Brazil. The collection of clam (N = 300), oysters (N = 300) and mussels (N = 300) were...