Influential Factors of Quality of Fish Gametes for Use of In Vitro Fertilization

Abstract

Aquaculture is the fastest growing livestock activity in Brazil, producing important sources of protein for human consumption. Most Brazilian fish farms that work with native species perform in vitro reproduction, given that these migrating species cannot release gametes without hormonal induction. To succeed with in vitro reproduction, the evaluation of reproductive parameters of both genders is necessary. The objective of this review is to describe the main reproductive parameters of fish, which must be evaluated for in vitro reproduction.

Parâmetros qualitativos do sêmen e morfologia comparada da cabeça e peça intermediária do espermatozoide de Pirapitinga (Piaractus brachypomus), Pacu (Piaractus mesopotamicus) e Tambaqui (Colossoma macropomum)

“…No presente trabalho observou-se resultado superior (90,00±1,00s). A importância da avaliação da duração da motilidade dos espermatozóides em peixes é porque ele diz respeito ao tempo que o espermatozóide tem disponível para penetrar na micrópila do ovócito e concluir a fertilização (FELIZARDO et al, 2016). De acordo com Andrade e Yasui (2003) nos teleosteos, o tempo de abertura da micrópila é de aproximadamente 60 segundos, o que provavelmente está relacionado com tempo de atividade no espermatozoide.…”

Effects of Time after Hormonal Stimulation on Milt Properties in Waigieu Seaperch Psammoperca waigiensis

“…Sperm motility is one of the parameters used to estimate milt quality in marine and freshwater fish species (Browne et al 2015;Felizardo et al 2016). Hormonal stimulation in freshwater and marine species affected sperm motility (Elakkanai et al 2015), but other studies showed that hormonal stimulation did not (Austriano et al 2006).…”