Nest-mediated parental care in a marine fish: Are large-scale nesting habitats selected and do these habitats respond to small-scale requirements?

 
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2018 (EN)
Nest-mediated parental care in a marine fish: Are large-scale nesting habitats selected and do these habitats respond to small-scale requirements? (EN)

CATTANO, CARLO
CHEMELLO, RENATO
SINOPOLI, MAURO
GRISTINA, MICHELE
TIMPANARO, ANGELA
MILISENDA, GIACOMO

Fishes have evolved various reproductive strategies including mechanisms that involve parental care and demersal eggs laid into nests. Symphodus ocellatus has a seasonal reproduction period during which large, dominant males become territorial and build nests with fragments of algae, where they attract females to spawn and provide care to the developing eggs. Based on the hypothesis that the S. ocellatus males choose the reproductive habitat based on some characteristics of the substrate, here we assessed whether, on a coastal area scale, the distribution of this species changes during the reproductive period because of the selection of some suitable sites or substrates, and whether the nesting microhabitat used by this species responding to certain requirements in relation to different characteristics. From April to September 2010, at four locations and on three substrate types, the fish were counted in three periods related to different stages of reproduction. Furthermore, several physical and biological variables have been recorded around numerous nests to select those with more recurrence. We found that S. ocellatus prefers to live on rocky substrates populated by photophilic algae, regardless of the phases of the reproductive cycle. We identified depth (1.7–3.2 m), the presence of a hole, a 10–20 cm algal canopy, and high algal coverage of Dyctiotales as nest requirements. S. ocellatus is mostly distributed in coastal sites sheltered from the action of waves. This allows the construction and maintenance of nests and the possibility to remain in a water temperature range similar to the reproductive physiological constraints. (EN)

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
visual census (EN)

habitat selection (EN)
habitat requirement (EN)
marine fish (EN)
Symphodus ocellatus. (EN)
Labridae (EN)
reproduction, habitat use, (EN)
Nest-building (EN)

Ελληνικό Κέντρο Θαλασσίων Ερευνών (ΕΛΚΕΘΕ) (EL)
Hellenic Centre for Marine Research (HCMR) (EN)

Mediterranean Marine Science

English

2018-07-30


Hellenic Centre for Marine Research (EN)

abundance and environmenthal data (EN)
2009-2010 (EN)
Mediterranean Sea (EN)

1791-6763
1108-393X
Mediterranean Marine Science; Vol 19, No 2 (2018); 248-255 (EL)
Mediterranean Marine Science; Vol 19, No 2 (2018); 248-255 (EN)

Copyright (c) 2018 Mediterranean Marine Science (EN)



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