Embryonic and larval development of Gobius paganellus (Pisces: Gobiidae)

Borges, Rita Alexandra; Faria, Cláudia Barreiros Macedo de; Gil, Fátima; Gonçalves, Emanuel João; Almada, Vítor Carvalho

http://hdl.handle.net/10400.12/1459

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Authors

Borges, Rita Alexandra

Faria, Cláudia Barreiros Macedo de

Gil, Fátima

Gonçalves, Emanuel João

Almada, Vítor Carvalho

Abstract(s)

The full developmental sequence from egg to juvenile of Gobius paganellus under controlled conditions is described. Embryonic development lasted 9-10 days at 18.5-20.0ºC and 10-11 days at 15.0-16.5ºC. Newly hatched larvae measured 3.90 mm, had the mouth and anus opened, pigmented eyes and almost no yolk. They ¢rst settled 25 days after hatching (10.0-10.5mm total length [TL]) and showed juvenile behaviour and body form 36 days after hatching (14.0mmTL). However, they only showed full juvenile pigmentation patterns 15 days later (17.0mmTL) (16.0-16.5ºC). In addition, a preliminary di¡erentiation between the newly hatched larvae of the most common Gobius species of south-western European shores is presented.