Effects of age and size on reproductive performance of captive Farfantepenaeus paulensis broodstock

Recent developments on broodstock maturation and reproduction of Farfantepenaeus paulensis

“…Although presenting an acceptable spawning performance (Peixoto et al, 2003b), a marked decrease in egg quality and nauplii survival has been observed when using animals from this source (Peixoto et al, 2002b). Therefore, recent studies have focused to improve reproductive performance and offspring quality of captive F. paulensis broodstock, as a future alternative for a more independent and reliable nauplii production (Cavalli et al, 1997;Peixoto et al, 2003b;Peixoto et al, 2004b). The reproductive performance of penaeids is known to be affected by broodstock source and size (Browdy et al, 1986;Menasveta et al, 1993;Ramos et al, 1995).…”

Métodos de extrusão manual e elétrica dos espermatóforos de reprodutores selvagens do camarão-rosa Farfantepenaeus paulensis (Decapoda: Penaeidae)

“…Em Litopenaeus stylirostris (ALFARO, 1993) e Pleoticus muelleri (DÍAZ et al, 2001) com peso entre 20g-30g foram observadas, respectivamente, médias de 1,6 milhões e 4,7 milhões de células espermáticas por unidade de espermatóforo indicando que diferenças entre o número de células dependem também da espécie. Os valores médios do presente estudo em relação ao número de espermatozóides (2,68 milhões de células) e peso do espermatóforo (0,01g) estão de acordo com o trabalho de PEIXOTO et al (2004b) para F. paulensis criados em cativeiro com classe de tamanho semelhante. Estes autores sugeriram que diferenças significativas no peso do espermatóforo entre diferentes classes de tamanho não estão necessariamente relacionadas com o número de células espermáticas, mas com os componentes estruturais do espermatóforo.…”

Shrimp farming as an alternative to artisanal fishermen communities: the Case of Patos Lagoon, Brazil

“…However, as there is a comprehensive knowledge of the biology and culture of F. paulensis, it is possible to produce large numbers of PL from either wild (Marchiori and Boff, 1983;Marchiori and Cavalli, 1993;Marchiori, 1996) or domesticated broodstock (Cavalli et al, 1997;Peixoto et al, 2003aPeixoto et al, , 2004aPeixoto et al, , 2005. Since production has not yet reached a commercial scale, the laboratory PL provided to the fishermen were still produced at the university's Marine Aquaculture Centre and handed to the fishermen.…”

“…Despite the supposedly advantageous performance of wild broodstock, the unpredictable supply and high capture costs might constrain the sustainable development of F. paulensis farming in the region. In this context, several studies have been carried out to optimize the maturation and reproduction of this species in captivity (Peixoto et al, 2002a(Peixoto et al, , 2002b(Peixoto et al, , 2003b(Peixoto et al, , 2003c(Peixoto et al, , 2004b, especially the evaluation of the domesticated broodstock as an alternative (Cavalli et al, 1997;Peixoto et al, 2003aPeixoto et al, , 2004a. The accelerated search to close the life cycle and improve the reproductive performance of F. paulensis in captivity will certainly contribute to the design of an efficient breeding program.…”