Publication
The relationship between the presence of satellite males and nest-holders' mating success in the azorean rock-pool blenny Parablennius sanguinolentus parvicornis
| dc.contributor.author | Oliveira, Rui Filipe | |
| dc.contributor.author | Carvalho, Natacha | |
| dc.contributor.author | Miranda, Jason | |
| dc.contributor.author | Gonçalves, Emanuel João | |
| dc.date.accessioned | 2012-04-05T17:16:31Z | |
| dc.date.available | 2012-04-05T17:16:31Z | |
| dc.date.issued | 2002 | |
| dc.description.abstract | In the Azorean rock-pool blenny, sexually active males may adopt alternative reproductive tactics. In the present paper the relationship between the presence of satellite males and the reproductive success of nest-holders was investigated by comparing nests with and without an associated satellite male. Males with an associated satellite male suffered more conspeci®c intrusions but they did not display a higher frequency of attacks towards conspeci®cs. Nest-holder males were more aggressive towards other conspeci®cs than towards satellites and the tolerance of nest-holders towards satellites was inversely correlated with the time spent by the satellites in the breeding territory, which suggests control by the nest- holder male of the satellite investment in shared territorial defence. Nest-holders with an associated satellite male had higher condition factors and received more female visits and more spawnings. These results bear two possible interpretations. (1) Nest-holders bene®t from the presence of a satellite male by increased attractiveness of their nests to females; satellite males are mutualists helping to defend the nest-owner's territory and to attract females, which is why they are tolerated. (2) Satellite males associate preferentially with more successful nest- holder males which have higher condition factors, and by doing so have more opportunities to achieve parasitic fertilizations. Only experiments will allow these two hypotheses to be distinguished. | por |
| dc.identifier.citation | Ethology, 208, 223-235 | por |
| dc.identifier.issn | 0179±1613 | |
| dc.identifier.uri | http://hdl.handle.net/10400.12/1308 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Blackwell Verlag | por |
| dc.title | The relationship between the presence of satellite males and nest-holders' mating success in the azorean rock-pool blenny Parablennius sanguinolentus parvicornis | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Berlin | por |
| oaire.citation.endPage | 235 | por |
| oaire.citation.startPage | 223 | por |
| oaire.citation.title | Ethology | por |
| rcaap.rights | restrictedAccess | por |
| rcaap.type | article | por |