Results 81 to 90 of about 207 (158)

Ultrastructural features and differentiation of the spermatids in Brycon orbignyanus during the spermiogenesis

open access: yes, 2000
Spermiogenesis in Brycon orbignyanus may be divided in four stages, which consist mainly in reduction of cytoplasmic, nuclear and cellular volumes and compactation of the nuclear chromatin, whose stages of the process occur simultaneously. At the end of the spermiogenesis, when the spermatids reach high levels of differentiation, the nuclei become more
Aires, Eduardo Duarte   +2 more
openaire   +1 more source

Una contribución al estudio del Pirapita (Brycon Orbignyanus)

open access: yesRevista del Museo de La Plata
Diversos autores que estudiaron los peces de agua dulce de la cuenca del Río de la Plata han señalado reiteradamente la presencia de varias especies del género Brycon. El profesor Dr. Emiliano J.
Ana Luisa Thormáhlen De Gil
doaj  

Effect of environmental enrichment on the body shape of the pumpkinseed. [PDF]

open access: yesCurr Zool, 2020
Fabre N   +3 more
europepmc   +1 more source

Predation of invasive silver carp by native largemouth bass is size-selective in the Illinois River. [PDF]

open access: yesSci Rep, 2023
Lampo EG   +6 more
europepmc   +1 more source

THE CONSERVATION STATE OF CHARACIDAE FISH (PISCES: CHARACIFORMES) IN AN AREA OF THE PLATA BASIN, ARGENTINA ESTADO DE CONSERVACION DE PECES CHARACIDAE (PISCES: CHARACIFORMES) EN UN AREA DE LA CUENCA DEL PLATA, ARGENTINA

open access: yesGayana, 2007
The fish conservation was quantified by means of the index SUMIN, composed by the summation of 12 outstanding variables for the species survival and/or conservation.
Marcelo A Zayas, Elly Cordiviola
doaj  

Transplante interespecífico de espermatogônia tronco de piracanjuba Brycon orbignyanus

open access: yes, 2022
The piracanjuba (Brycon orbignyanus) is an endangered species due to anthropic actions, such as riparian deforestation and the fragmentation of rivers. The association of biotechniques for the generation of in vitro genetic banks, constituted by primordial germ cells (PGCs) and germ lineage cells (spermatogonial and oogonial stem cells) with cell ...
openaire   +1 more source

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