Results 31 to 40 of about 491 (145)
Brazilian Journal of Oceanography, 1980 The possibility of the use of electropherogrames of plasma proteins in polyacrylamide slab gel in the study of populations of marine cat-fishes was examined. A total of 176 samples of plasma from four species. Sciadeichtys luniscutis.
Phan Van Ngan
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Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.ABSTRACT Understanding the dietary dynamics of marine megafauna is essential for interpreting ecological interactions and assessing environmental changes in marine ecosystems. We analysed temporal trends in the diets of eight megafaunal species, comprising marine mammals, seabirds, and sea turtles.
Joao Bosco Gusmao +2 more
wiley +1 more source
Tissue-specific mercury concentrations in two catfish species from the Brazilian coast
Brazilian Journal of Oceanography, 2012 Some regions of Brazil have particularly high levels of mercury (Hg) emissions due to industrial activities, and their fish species may therefore suffer high levels of contamination through bioaccumulation. In this paper we assess Hg contamination in the
Juliana de Souza Azevedo +3 more
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Microbiota characterization of the catfish (Cathorops agassizii and Genidens genidens) sting venom
, 2006 This work aimed to study the bacterial contamination of the catfishes stings Genidens genidens (Valenciennes, 1839); and Cathorops agassizii (Agassiz, 1829) found in the estuary-bay complex of Santos and São Vicente (São Paulo State).
Junqueira, Marcos Emerson Pinheiro +4 more
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Antagonistic Rewiring and Turnover Patterns in a Neotropical Fish–Parasite Metanetwork
Freshwater Biology, Volume 70, Issue 7, July 2025.ABSTRACT Integrating beta‐diversity and network analyses is an emerging approach for understanding the spatial structure of species communities. For instance, although the presence of hosts affects parasite species distribution, environmental factors can either restrict or promote the occurrence of certain parasite species by changing the abundance of ...
Ana Paula Lula Costa +2 more
wiley +1 more source
, 2019 Fig. 1. Guanabara Bay, Rio de Janeiro, Southeastern Brazil, indicating the sampling sites: 1- Bancários, 2 - Magé, 3 - Paquetá Island, 4 - Ilha do Fundão, 5 - central channel.Published as part of Maciel, Thaís Rodrigues, Vaz-dos-Santos, André Martins ...
Maciel, Thaís Rodrigues +3 more
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Chave para identificação das espécies de bagres marinhos (Siluriformes, Ariidae) da costa brasileira
Boletim do Instituto de Pesca, 2018 A identificação das espécies de bagres marinhos da família Ariidae é problemática devido í presença de poucas características externas que permitam uma diagnose segura da espécie.
Alexandre P. Marceniuk
doaj
Assessing Fish Community Structure and Diversity Across Environmental Gradients in a Tropical Bay
Marine Ecology, Volume 46, Issue 2, March 2025.ABSTRACT Understanding the relationship between species distribution and the environment across spatial gradients is crucial for biodiversity evaluation. We surveyed fish populations in a tropical bay, covering a spatial gradient from the outer zone with favorable marine conditions to the inner zone affected by human activities.
Leonardo Almeida Freitas +1 more
wiley +1 more source
Acta Scientiarum: Biological Sciences, 2020 Fish fauna was studied in five sites of the shallow infralittoral of the Paranaguá Bay during the period from October 1999 to September 2000. At each sampling site, fish were sampled with other trawls, salinity and temperature were measured, water ...
Paula Nakayama +4 more
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, 2007 Genidens planifrons (Higuchi, Reis & Araújo, 1982) Netuma planifions Higuchi, Reis & Araújo, 1982: 12, fig. 1. Type locality: Lagoa dos Patos, RS, Brazil. Holotype: MZUSP 14828.
Alexandre P. Marceniuk +1 more
core +1 more source