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An efficient technique for the captive breeding of an endangered freshwater fish Salaria fluviatilis (Pisces: Blenniidae), with a description of Its ontogeny
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Orientador(es)
Resumo(s)
Salaria fluviatilis is one of the few freshwater members of the family Blenniidae and occurs
around the Mediterranean Basin. This species is vulnerable or endangered in most countries where it
occurs. Thus, information on its developmental biology and the establishment of methods for ex situ
reproduction of highly endangered populations, to preserve them until natural habitats are restored,
are much needed. A technique for the culture of this endangered species in controlled conditions is
presented, together with the description of the full developmental sequence, from egg to adult. The use
of the rotifer Brachionus calyciflorus at the onset of exogenous feeding proved to be an efficient way
to allow larvae to reach the size when they can feed upon Artemia nauplii. Embryonic development
lasted 12–14 d at 20–21 C. Newly hatched larvae measured 5.1 mm total length (TL). The mouth
and anus were opened; the eyes were pigmented; there were almost no yolk; and the pectoral fins
were small and unpigmented. Most larvae settled at 13.0–14.0 mm TL (27–31 d after hatching) and
showed full juvenile pigmentation patterns at 27.0–28.0 mm TL (83 d after hatching). The larvae of
this species showed agonistic behaviors once they began to settle.
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Contexto Educativo
Citação
Journal of the World Aquaculture Society, 41, 49-56