Using mariculture as a breeding site: reproduction of Hypleurochilus fissicornis (Actinopterygii: Blenniidae)

Scientia Marina

Bianca Possamai¹  Luís Fernando Fávaro² 

[1] Laboratório de Reprodução e Comunidade de Peixes, Setor de Ciências Biológicas, Depto de Biologia Celular. Centro Politécnico, Universidade Federal do Paraná (UFPR) - Programa de Pós-Graduação em Ecologia e Conservação, Setor de Ciências Biológicas, Centro Politécnico, Universidade Federal do Paraná (UFPR);Laboratório de Reprodução e Comunidade de Peixes, Setor de Ciências Biológicas, Depto de Biologia Celular. Centro Politécnico, Universidade Federal do Paraná (UFPR);

关键词: gametogenesis;    histology;    reef fish;    parental care;   

DOI  :  10.3989/scimar.04176.19B

来源: DOAJ

【 摘 要 】

Mariculture in estuaries provides substrate for colonization by fouling organisms, thus attracting small cryptic fish species hitherto unknown in this environment. The blenny Hypleurochilus fissicornis is one of the species that is associated with this new system and is found in high abundance in bivalve farming. To understand the reproductive strategy that this species uses in this new environment, we collected specimens monthly in a mariculture on the southern coast of Paraná State (Brazil). After obtaining morphometric data, we removed gonads to determine sex and maturity stage. Gonads were weighed and analysed histologically. Oogenesis showed the same pattern as in other teleosts, but spermatogenesis showed a very complex dynamics. The spawning is multiple and synchronous between sexes, lasting eight months (May to December) and peaking in winter. Hypleurochilus fissicornis was reproductively successful using the mariculture as a breeding site. The species has a variety of tactics to protect its offspring (e.g. batch spawning, long reproductive period, reduced L50, parental care and a reproductive peak in winter).

【 授权许可】

Unknown