Results 11 to 20 of about 74,413 (116)

Rhadinorhynchus plagioscionis n. sp. (Acanthocephala: Rhadinorhynchidae) da pescada (Plagioscion Squamosissimus) da Amazônia Brasileira [PDF]

open access: yesActa Amazonica, 1980
Resumo Rhadinorhynchus plagioscionis n. sp. (Acanthocephala: Rhadinorhynchidae) é descrita do intestino da pescada (Plagioscion squamosissimus (Heckel), obtida perto de Manaus, Amazonas, Brasil.
Vernon E. Thatcher
doaj   +1 more source

Evidence for seasonal cycles in deep‐sea fish abundances: A great migration in the deep SE Atlantic?

open access: yesJournal of Animal Ecology, Volume 89, Issue 7, Page 1593-1603, July 2020., 2020
The authors demonstrate a significant correlation between epipelagic primary production and deep‐sea fish abundances at 1,500 m from 2010 to 2016 on the Angola margin. These findings highlight the importance of upper‐ocean processes to deep‐sea ecosystem functioning, and their potential vulnerability to future change.
Rosanna J. Milligan   +13 more
wiley   +1 more source

Ocorrência de Scomberocotyle scomberomori em Serra spanish mackerel do sudoeste do Oceano Atlântico

open access: yesPubvet, 2018
O padrão de dispersão dos parasitas tem sido considerado de grande importância para a dinâmica populacional da relação hospedeiro-parasita. Este trabalho relata o primeiro registro do parasita monogenético Scomberocotyle scomberomori no hospedeiro Serra ...
Cláudio Giovanio da Silva   +2 more
doaj   +1 more source

Tough fishing and severe seasonal food insecurity in Amazonian flooded forests

open access: yesPeople and Nature, Volume 2, Issue 2, Page 468-482, June 2020., 2020
Abstract Billions of people rely on harvesting wildlife for food, and must contend with catch rates that vary in space (e.g. overharvesting near communities) and time (e.g. seasonal migrations). Yet, research has overlooked potential linkages between reduced wildlife catch rates (catch‐per‐unit‐effort) and food security.
Daniel Tregidgo   +3 more
wiley   +1 more source

Status de conservação do peixe-boi marinho (Trichechus manatus manatus Linnaeus, 1758) no Brasil [PDF]

open access: yes, 2009
O peixe-boi marinho (Trichechus manatus manatus) é o mamífero aquático mais ameaçado de extinção do Brasil. Entre 1990 e 1993, foi realizado um levantamento no litoral de dez Estados do norte e nordeste do Brasil (SE, AL, PE, PB, RN, CE, PI,MA, PA e AP),
Pauline de Araújo, Janaina   +3 more
core   +1 more source

Hematological and biochemical characteristics during the transport of dog snapper Lutjanus jocu (Perciformes: Lutjanidae)

open access: yesNeotropical Ichthyology, 2018
The objective of this study was to evaluate stress responses in dog snapper (Lutjanus jocu) during transport by evaluating their hematological and biochemical responses.
Bruno L. Oliveira   +4 more
doaj   +1 more source

Encalhe de peixe-boi-marinho-das-Antilhas (Trichechus manatus manatus Linnaeus, 1758) na praia de Panaquatira, Maranhão, Brasil [PDF]

open access: yes, 2020
O peixe-boi-marinho-das-Antilhas (Trichechus manatus manatus) apresenta distribuição geográfica que se estende por todo o Caribe e Américas Central e do Sul. No Brasil, a espécie é considerada ameaçada de extinção devido, sobretudo, a fatores antrópicos,
Conceição, Fábio Pereira   +11 more
core   +1 more source

Influência da densidade de estocagem no cultivo de juvenis de robalo-flecha mantidos em laboratório [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2003
O objetivo deste trabalho foi analisar a influência da densidade de estocagem no crescimento, conversão alimentar e sobrevivência de juvenis de robalo-flecha (Centropomus undecimalis).
José Jerônimo de Souza-Filho   +1 more
doaj   +1 more source

Performance of juvenile mojarra supplied with feed containing varying levels of crude protein

open access: yesCiência e Agrotecnologia, 2016
The growth of the Brazilian aquaculture has stimulated the development of the productive chain of native species, including marine environment. The objective of this study was to evaluate the growth performance of juvenile mojarra fish (Diapterus ...
Ricardo Henrique Bastos de Souza   +5 more
doaj   +1 more source

A new, conspicuously pigmented Pyrrhulina (Teleostei: Characiformes: Lebiasinidae) from the Río Tigre, Loreto, Peru

open access: yesJournal of Fish Biology, Volume 109, Issue 1, Page 102-110, July 2026.
Abstract A new species of Pyrrhulina is described based on morphological and molecular evidence. Pyrrhulina punctata is distinguished from all congeners by the presence of a series of 7 to 16 irregular blotches of dark pigmentation on the flanks, equally marked in juveniles and adult specimens, the presence of 26–28 lateral‐line scales, 17–21 maxillary
Andre Netto‐Ferreira   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy