An overview of the reproductive cycle of cultured specimens of a potential candidate for Mediterranean aquaculture, Umbrina cirrosa
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AuthorsChaves-Pozo, E. (Elena); Abellán-Martínez, E. (Emilia); Baixauli, P. (Pilar); Arizcun-Arizcun, M. (Marta)
sex steroid hormones
humoral innate activities
The shi drum (Umbrina cirrosa), belonging to the Sciaenidae family of fish (Nelson et al., 2016) has attracted attention as it is an excellent diversification species in Mediterranean aquaculture to combat the low prices of the most cultured species due to the appearance of new producing countries in the Mediterranean area. In this manuscript we describe for the first time the reproductive cycle of captive shi drum specimens that are able to spontaneously spawn in captivity. Our data show that spermatogenesis started in one year old shi drum spe- cimens, although the fish were not mature enough to complete the reproductive cycle. Thus, three year old specimens showed multiple spawns with around 65% of the eggs fertilized. In mature males, levels of 11-ke- totestosterone (11KT), testosterone (T) and progesterone (P) were detected in serum and gonad, while 17β- estradiol (E2) was only detected in gonad. Testicular levels of E2 and P suggest that these hormones might have a role in spawning ...
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