Morphological analysis of Prochilodus argenteus ovaries in successful and unsuccessful hypophysation-induced reproduction.

Pampus argenteus is a species of economic importance for professional fishing and aquaculture. To analyse the quality of oocytes of P. argenteus, 10 females were kept in tanks of 200 m with an average depth of 1 m in the Integrated Center of Fishing Resources and Aquaculture of Três Marias - CODEVASF.

Induced reproduction and early development in dourado, Lima & Britski, 2007 (Pisces: Characiformes).

Our study aimed to establish the response of Salminus franciscanus to hypophysation and describe the main morphological events of its embryonic process. Wild fish were captured in São Francisco River and selected broodstock (females: 66.4 ± 11.

Description of the composition of fatty acids and lipids in the breeders muscle, oocytes and in the embryonic development of Brycon orthotaenia (Günther, 1864).

The objective of this work was to evaluate the fatty acid and lipid composition of oocytes, newly hatched larvae (NHL), first feeding larvae (FFL) and muscle tissue of female Brycon orthotaenia broodstock. Total and polar lipid was significantly (P<0.05) abundant in oocytes and larvae in different stages of development.

Capture, adaptation and artificial control of reproduction of Lophiosilurus alexandri: A carnivorous freshwater species.

The present study describes the capture adaptation and reproduction of wild Lophiosilurus alexandri broodstock in laboratory conditions. There were two periods when capturing was performed in natural habitats. The animals were placed in four tanks of 5m(3) with water temperatures at 28°C with two tanks having sand bottoms.