Maturation and Reproduction of Pond‐Reared Penaeus schmitti

Abstract

Penueus schmitti broodstock was grown from postlarvae in a three‐stage semi‐intensive pond system. Mean weight after 10.5 mo was 51.2 g for females and 33.8 g for mnles. Reproductive response was evaluated in two studies. The first study was conducted with unilaterally ablated or unablated females and males with ejaculated or non‐ejaculated spermntophores. The best response was achieved with ablated females and with non‐ejaculated males (0.87 spawas/maturation tank per d and 22.254 nauplii/maturation tank per d). The second study compared the reproductive response of captive ablated females mated with pond‐reared males or wild males. More nauplii were produced from wild males (78,583 nauplii/maturation tank per d) than from pond‐reared males (57,777 nnuplii/tank per d). The reproductive culture cycle of P. schmitti has been closed for the first time in Cuba on a commercial scale with the collection and stocking of postlarvae of the F1 generation.

Reproductive Performance of Different Sized Wild and Pond‐reared Penaeus paulensis Females

“…Differences in the reproductive performance of females may also be attributed to the quality of males. Wild Penaeus schmiffi males were shown to provide better quality sperm than pond-reared ones (Ramos et al 1995). However, this does not seem to be the case here because mean fertilization rates were above 65% in the pond-reared stock, demonstrating that pond-reared P. paulensis males of 16-18 g are capable of breeding.…”

Functional morphology of the male reproductive system of the white shrimp Litopenaeus schmitti (Burkenroad, 1936) (Crustacea, Penaeidea) compared to other Litopenaeus

“…There is a consensus of the male reproductive quality on the productivity of the stock of penaoeideans from captivity (Díaz et al 2002). Reproductive males of L. schmitti from nature are capable of fertilizing females and producing a higher quantity of nauplii than captive males (Ramos et al 1995). Bueno (1990), studying maturation and spawning of L. schmitti under captive conditions, found a high rate of mating and fertilization from shrimps sampled in nature, without the necessity for artificial insemination.…”

Recent developments on broodstock maturation and reproduction of Farfantepenaeus paulensis

“…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). The size recommended for the reproduction of F. paulensis females in captivity ranged from 30 to 60 g (Bueno, 1989;Cavalli et al, 1997).…”