Conspecific Brood Parasitism is Biased Towards Relatives in the Common Black-Headed Gull
[摘要] Giventhemanydetailedstudiesonthebreedingbiologyofgulls,surprisinglylittleisknownaboutconspecificbroodparasitism(CBP)inthesebirds.CBPhasbeenrecordedinonlyafewoftheroughly60speciesofLaridae.WestudiedCBPintwocoloniesofCommonBlack-headedGullCroicocephalusridibundusinnortheasternPoland,duringtwoconsecutiveyears.Wefoundparasitismin22%and10%ofthemonitorednestsinthecolonies,asdeterminedwithproteinfingerprinting.Amongtheparasiticfemaleswefoundonlyonethatactedasbothparasiteandhost.Inbothcolonies,mostcasesofparasitisminvolvednestsoffemalesmorerelatedthanaveragetotheparasiticfemale.Therarecasesofeggexpulsioninvolvedhostswithlowrelatednesstotheparasite.WesuggestthatkinselectionisimplicatedinCBPintheBlackheadedGull.
[发布日期] [发布机构]
[效力级别] [学科分类] 动物科学
[关键词] Relatedness [时效性]
