000			02956nab a22003737a 4500
003			EC-PaCDF
005			20170301144237.0
008			160905t20142014xxu||||||||||||||||0eng||
040			_aEC-PaCDF
041			_aeng
082	0	4	_221 _a999.999
092	0		_221 _a999.999 _bMEI
100	1		_aMeise, Kristine.
245	1	0	_aBeing on time: _bsize-dependent attendance patterns affect male reproductive success.
260			_c2014
520	0		_aWhen reproduction occurs seasonally, males are expected to concentrate their reproductive effort when the abundance of females in oestrus is highest. In colonial species, large body size and prior residency correlate with the ability to establish dominance and ultimately to achieve matings. However, in addition to dominance, attendance in proximity to females may also enhance male mating success. If females come into oestrus highly asynchronously, males are unable to attend females for the entire breeding season. We expect the attendance of the most competitive males to increase with the availability of receptive females while less competitive males may primarily attend colonies when more competitive males are rare. In Galapagos sea lions, Zalophus wollebaeki, large males defend semiaquatic territories, but are unable to hold these over the entire reproductive season. They are sighted most often during the peak reproductive season. In this study, we found that nonterritorial males frequented the colony less during this time. However, the percentage of days intermediate-sized and resident males were sighted increased towards the peak of the reproductive season. Reproductive success was positively correlated with male attendance and therefore highest among territorial males. However, the correlation between attendance and reproductive success also existed for nonterritorial males. This suggests that male Galapagos sea lions adjust their attendance to the competitive situation in the colony. By increasing attendance during the peak of female oestrus, territorial males increase their chance of reproducing successfully. By adopting size-dependent strategies, nonterritorial males are able to achieve fitness while still growing.
546			_aEnglish
653			_aAsynchronous female oestrus.
653			_aAsincrónica celo femenino.
653			_aGalapagos sea lion.
653			_aLeón marino de Galápagos.
653			_aMale reproductive strategy.
653			_aEstrategia reproductiva masculina.
653			_aPolygynous mating system.
653			_aSistema de apareamiento poligínico.
653			_aSize-dependent attendance patterns.
653			_aPatrones de asistencia dependientes del tamaño.
700	1		_aPiedrahita, Paolo.
700	1		_aKrüger, Oliver.
700	1		_aTrillmich, Fritz. _9293
773	0		_tAnimal Behaviour _gVol. 93 (May 2014), p. 77-86.
856	4	0	_uhttp://dx.doi.org/10.1016/j.anbehav.2014.04.019
942			_2ddc _cARTICLE
999			_c12844 _d12844