Results 1 to 10 of about 2,768 (150)

Long-Term Changes in Planktonic Ciliate Beta Diversity Under Contrasting Hydrological Regulation in A River-Floodplain System. [PDF]

Environ Microbiol
Hydrological regulation by dams reshaped ciliate biodiversity over 14 years, increasing temporal compositional change and ecological uniqueness while accelerating declines in richness and density. These results highlight flood‐pulse dynamics as a fundamental mechanism sustaining biodiversity and ecological integrity in river‐floodplain ecosystems ...
de Souza YR, de Oliveira de Matos MH, Monti Areco FM, Progênio M, de Meira BR, Souza-Silva AC, de Oliveira FR, Velho LFM.   +7 more
europepmc   +2 more sources

Description of the Early Development of Hoplias intermedius (Günther, 1864) (Characiformes: Erythrinidae). [PDF]

J Morphol
This study provides the first description of the early development of Hoplias intermedius (Characiformes: Erythrinidae), from the embryonic to the juvenile stage. The morphological, meristic, and morphometric characterization contributes to understanding the ontogeny and developmental transitions of Neotropical fishes, supporting taxonomy, conservation,
de Souza MBV, Volpato RS, Bialetzki A.
europepmc   +2 more sources

Subtropical marine reserve as key habitats for the critically endangered sand tiger shark (Carcharias taurus) in the Southwestern Atlantic. [PDF]

J Fish Biol
Abstract This study documents the occurrence, seasonal patterns and reproductive activity of the sand tiger shark (Carcharias taurus) within a no‐take marine protected area in southeastern Brazil, using Baited Remote Underwater Video (BRUV) and diving records.
Athayde ACS, Bertuzo G, Gadig OBF, Munhoz RR, Fukushima LM, Pimentel CR, Rolim FA, Pereira-Filho GH, Motta FS.   +8 more
europepmc   +2 more sources

Ultrasonography as a non-invasive technique to assess the effects of diet on the ovaries of female European seabass (Dicentrarchus labrax). [PDF]

J Fish Biol
Abstract Broodstock management in aquaculture aims to optimise larval production to meet farm demand, which requires precise monitoring of the reproductive cycle. Traditional methods such as histology often require killing of fish, making them unsuitable for monitoring reproductive dynamics at fish level.
Tomàs-Ferrer J, Moro-Martínez I, Massutí-Pascual E, Grau A, Palmer M.   +4 more
europepmc   +2 more sources

Spatial Structure Explains Morphological Variation Better Than Climatic Gradients in the South American Rattlesnake (<i>Crotalus durissus</i>). [PDF]

Ecol Evol
We evaluated whether climatic gradients or spatial structure better explain body size variation in the South American rattlesnake (Crotalus durissus) across its wide geographic range. After explicitly accounting for spatial autocorrelation, climatic variables were not significant predictors of body size in either sex, whereas sex‐specific spatial ...
Otani M, Costa HC, Zawadzki CH, Santana DJ.   +3 more
europepmc   +2 more sources

Nutritional, Oxidative, and Sensory Quality of Whiteleg (Penaeus vannamei) and Pink Shrimp (Penaeus paulensis) From Different Production Systems During Frozen Storage. [PDF]

J Food Sci
ABSTRACT This study compared the nutritional composition, fatty acid profile, oxidative stability, and sensory quality of whiteleg shrimp (Penaeus vannamei) and pink shrimp (Penaeus paulensis) obtained from semi‐intensive, organic, and wild systems. Four groups were evaluated: Semi‐intensive P.
Rosa SC, Padilha M, Dos Santos BA, Trindade PCO, Hollweg G, Balzan MM, Fracari PR, Cichoski AJ, Wagner R, Pereira NF, Mello GL, Vargas-Ramella M, Campagnol PCB.   +12 more
europepmc   +2 more sources

Desempenho zootécnico e econômico da tilápia, linhagem GIFT-Epagri SC02, em cultivo semi-intensivo em Santa Catarina

Agropecuária Catarinense, 2020
Avaliou-se o desempenho a campo da segunda geração da linhagem de tilápia da Epagri, chamada de GIFT-Epagri SC02, nas regiões norte e médio Vale do Itajaí. Foram acompanhados os desempenhos zootécnico e econômico de dois cultivos comerciais na safra 2016/
Bruno Corrêa Silva, Haluko Massago, Natalia da Costa Marchiori, Valdomiro Biz, Tatiane Carine Silva   +4 more
doaj   +1 more source

Reproductive biology of the squirrelfish, Holocentrus adscensionis (Osbeck, 1765), caught off the coast of Pernambuco, Brazil

Scientia Marina, 2007
In the present work, specimens of Holocentrus adscensionis, caught off Pernambuco State, northeast Brazil, by small scale artisanal fishing boats, were analyzed with regard to gonad maturation, gonad index, size at first sexual maturity, fecundity, type ...
Renata A. Shinozaki-Mendes, Fabio Hissa Vieira Hazin, Paulo Guilherme de Oliveira, Felipe Correia de Carvalho   +3 more
doaj   +1 more source

EFEITO DA TEMPERATURA E DOS ALIMENTOS PROTÉICO E LIPÍDICO NOS ESTÁDIOS DE MATURAÇÃO OVARIANA E ESTÁGIOS DE MUDA DO Macrobrachium acanthurus (WIEGMANN, 1836)

Ciência Animal Brasileira, 2011
O conhecimento da fisiologia reprodutiva do camarão Macrobrachium acanthurus em relação a fatores controlados, como alimentos processados e variações de temperaturas, ajudaria a desenvolver técnicas de cultivo, garantindo sua sobrevivência.
José Carlos Gastelú, Jaqueline Oliveira, Luis Otavio Brito, Alfredo Oliveira Galvez, Maria Gloria Moreira   +4 more
doaj   +1 more source

Relação do perfil proteico de dietas comerciais no desempenho de tilápia-do-nilo

Agropecuária Catarinense, 2019
O objetivo deste estudo foi avaliar o desempenho zootécnico da tilápia-do-nilo alimentada com diferentes dietas comerciais, e relacionar com a composição centesimal e aminograma das dietas.
Bruno Corrêa Silva, Haluko Massago
doaj   +1 more source