Buscar
Mostrando ítems 1-10 de 68
Microscopic Evidence of the Opportunistic Reproductive Strategy and Early Sexual Maturation of the Small-Sized Characin Knodus moenkhausii (Characidae, Pisces)
(2014)
We investigated the reproductive biology of Knodus moenkhausii, an abundantsmall-sized characin fish with broad occurrence in the Parana River basin, Bra-zil. Specimens were collected monthly to determine fecundity, length ...
Reproductive strategies of two Curimatidae species in a Mogi Guaçu impoundment, upper Paraná river basin, São Paulo, Brazil
(2012-10-01)
Considering that reproduction studies are fundamental to understand the life cycle of organisms, this study aimed to investigate the reproductive strategies of saguirus Cyphocharax nagelii and Steindachnerina insculpta in ...
Invasive rainbow trout Oncorhynchus mykiss preying on the endangered naked characin Gymnocharacinus bergii at its thermal limits
(Wiley Blackwell Publishing, Inc, 2017-12)
The expansion of the invasive rainbow trout Oncorhynchus mykiss into the thermal headwaters of Valcheta Stream (Patagonia, Argentina) and new predation records on the endangered endemic naked characin Gymnocharacinus bergii ...
Triploidization in the streaked prochilod Prochilodus lineatus inferred by flow cytometry, blood smears and karyological approaches
(2020-06-01)
The streaked prochilod Prochilodus lineatus is an important fish species from the Neotropical region. In this study, a protocol of triploidization was established by temperature shock. Fertilized eggs were shocked at 2 min ...
First feeding of diploid and triploid yellowtail tetra Astyanax altiparanae: An initial stage for application in laboratory studies
(Wiley-Blackwell, 2018-01-01)
In this study, the aim was to establish a protocol for first feeding of diploid and triploid yellowtail tetra Astyanax altiparanae in laboratory conditions. The fry were fed with five different diets: (i) Artemia franciscana ...
Movement patterns of stream-dwelling fishes from Mata Atlântica, Southeast Brazil
(Universidad de Costa Rica, 2012)