Results 41 to 50 of about 9,943 (122)

Trophic Ecology of Loggerhead Turtles (Caretta caretta) in Southern Brazil: Insights From Stable Isotopes

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT This study aimed to investigate the trophic ecology of loggerhead turtles recorded stranded along the Paraná coast in southern Brazil. Carbon and nitrogen stable isotopes were analysed in muscle tissues from 20 loggerhead turtles and in 69 specimens representing 12 prey species (molluscs, crustaceans and teleost fishes).
Gleici Montanini   +7 more
wiley   +1 more source

Decapod abundance and species richness in the bycatch of Xiphopenaeus kroyeri (Heller, 1862) fishery, Santa Catarina, southern Brazil

open access: yesNauplius, 2019
We aimed to analyze the crustacean bycatch from the Xiphopenaeus kroyeri fishery in the Santa Catarina State and compare the bycatch’s biomass to that of the target species.
Gilson Stanski   +4 more
doaj   +1 more source

Effects of Prawn Shell Meal Diets on Hemocyte Count, Hemolymph Clotting, and Sperm Quality of the Freshwater Prawn Macrobrachium caementarius

open access: yesAquaculture Research, Volume 2026, Issue 1, 2026.
Crustacean shells are composed of chitin, which is bound to protein and minerals, along with other essential nutrients. These components are necessary for growth, immune response, the formation of reproductive structures, and the enhancement of sperm quality.
Walter Reyes-Avalos   +5 more
wiley   +1 more source

Diversidade, ocorrência e distribuição da fauna de invertebrados demersal das Baías Norte e Sul de Florianópolis (SC), Brasil [PDF]

open access: yes, 2011
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Ecologia, Florianópolis, 2011Sistemas costeiros como lagoas, baías e estuários são caracterizados por uma elevada produtividade ...
Moreira, Matheus Coelho
core  

De Novo Transcriptome Assembly Reveals Insights Into Osmoregulation and Oxidative Stress Response in the Gills of the Southern King Crab (Lithodes santolla)

open access: yesEcology and Evolution, Volume 15, Issue 11, November 2025.
The Southern King Crab (Lithodes santolla), an ecologically and commercially important species in sub‐Antarctic waters. In this study, we assembled the first gill de novo transcriptome of L. santolla to characterize gene expression related to environmental responses.
Alexandra Brante   +5 more
wiley   +1 more source

Macrogenetics Approach Reveals Spatial Trends and Drivers of Mitochondrial Genetic Diversity at Different Biological Organization Levels in Tropical Western Atlantic Decapods

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
There is a knowledge gap concerning the genetic diversity distribution across marine invertebrates, and whether the latitudinal genetic diversity gradient results from congruent intraspecific trends. Our results indicate higher genetic diversity in lower latitudes is correlated to productivity and oxygen levels, but does not represent the accumulation ...
Pedro A. Peres, Fernando L. Mantelatto
wiley   +1 more source

Physiology of Ovarian Development in Crustaceans: Interactions Among Hormones, Nutrients, and Environmental Factors From Integrated Perspectives

open access: yesAquaculture Nutrition, Volume 2025, Issue 1, 2025.
Reproductive maturation remains a central bottleneck in crustacean aquaculture, as ovarian development dictates broodstock quality, fecundity, and larval viability. This review synthesizes current knowledge on the physiological regulation of ovarian maturation in decapod crustaceans, emphasizing the interplay of hormones, nutrients, and environmental ...
Tariq Dildar   +3 more
wiley   +1 more source

From sperm plug formation to ovulation: morphological and ultrastructural modifications in the seminal receptacle of the blue crab Callinectes danae

open access: yesZoologischer Anzeiger, 2021
Abstract In species of Callinectes a sperm plug is formed in the seminal receptacle (SR) during the sperm transfer, which hinders the insemination by other males. In this study, we evaluated the morphology, histochemistry, and ultrastructure of the seminal receptacle of juvenile and adult females of Callinectes danae along the different stages of ...
Assugeni, Camila O.   +2 more
openaire   +3 more sources

Étude au microscope electronique de jonctions neuromusculares du Crabe bleu, ("Callinectes danae", Smith)

open access: yes, 1960
Este trabalho relata as primeiras observações de junções neuromusculares encontradas durante um estudo microscópio eletrônico sôbre os músculos dos maxilípodos do Sirí Azul (Callinectes Danae, Smith).
Lavallard, Roger, Roger Lavallard
core   +1 more source

LEVANTAMENTO DA FAMÍLIA PORTUNIDAE (CRUSTACEA, DECAPODA,BRACHYURA) NO COMPLEXO BAÍA-ESTUÁ RIO DE SANTOS, SÃO PAULO, BRASIL

open access: yesBoletim do Instituto de Pesca, 2018
Entre 1979 e 1983, em levantamento da famí­­lia Portunidae no Complexo Baia-Estuário de Santos, identificaram-se as seguintes espécies: Callinectes bocourti, Callinectes danae, Callinectes exasperatus e Callinectes sapidus, ocorrendo no estuário e na ...
José Benevide PITA   +3 more
doaj  

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