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001-es BibID:	BIBFORM056525
Első szerző:	Kőrösi Ádám
Cím:	Restricted within-habitat movement and time-constrained egg laying of female Maculinea rebeli butterflies / Kőrösi Ádám, Örvössy Noémi, Batáry Péter, Kövér Szilvia, Peregovits László
Dátum:	2008
ISSN:	0029-8549 1432-1939
Megjegyzések:	The movement of butterflies within habitatpatches is usually assumed to be random, although fewstudies have shown this unambiguously. In the case of thehighly specialized genus Maculinea, two contradictoryhypotheses exist to explain the movement and distributionof imagos within patches: (1) due to the high spatial variance of survival rates among caterpillars, the ♭♭riskspreading'' hypothesis predicts that females will tend to make linear flight paths in order to maximize their net displacement and scatter the eggs as widely as possible;and (2) recent mark?release?recapture (MRR) data suggestthat within-habitat displacement of some Maculinea speciesis constrained and that adults may establish homeranges. We tested both hypothesis by analysing themovement pattern of individuals. We also investigatedwhether egg laying is time constrained, which wouldenhance the trade-off between flying and egg laying. Thirtyfemales of Maculinea rebeli (Lepidoptera: Lycaenidae)were tracked within a single population in Central Hungary.Their egg-laying behaviour and individual patterns ofmovement were recorded, and the latter were comparedwith random walk model predictions. The population wasalso sampled by MRR to estimate survival rates, and fournon-mated, freshly eclosed females were dissected toassess their potential egg load. Net squared displacement offemales was significantly lower than predicted by therandom walk model and declined continuously after the15th move. The ratio of net displacement and cumulativemove length decreased with the number of moves, supportingthe hypothesis that Maculinea butterflies establishhome ranges. We found that low survival and a low rate ofegg laying prevented females from laying their potentialnumber of eggs within their lifespan. Time limitationincreased the cost of movement, providing another possibleexplanation for the restricted movement of females.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Home range Myrmecophily Oviposition Random walk model Risk spreading
Megjelenés:	Oecologia. - 156 : 2 (2008), p. 455-464. -
További szerzők:	Örvössy Noémi (1979-) (ökológus) Batáry Péter Kövér Szilvia Peregovits László
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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