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001-es BibID:BIBFORM082214
Első szerző:Dos Remedios, Natalie
Cím:Ontogenic differences in sexual size dimorphism across four plover populations / Natalie Dos Remedios, Tamás Székely, Clemens Küpper, Patricia L. M. Lee, András Kosztolányi
Dátum:2015
ISSN:0019-1019
Megjegyzések:Sexual size dimorphism (SSD) among adults is commonly observed in animals and isconsidered to be adaptive. However, the ontogenic emergence of SSD, i.e. the timing ofdivergence in body size between males and females, has only recently received attention.It is widely acknowledged that the ontogeny of SSD may differ between species, but itremains unclear how variable the ontogeny of SSD is within species. Kentish PloversCharadrius alexandrinusand Snowy PloversC. nivosusare closely related wader speciesthat exhibit similar, moderate (c. 4%), male-biased adult SSD. To assess when SSDemerges we recorded tarsus length variation among 759 offspring in four populations ofthese species. Tarsus length of chicks was measured on the day of hatching and up tothree times on recapture beforefledging. In one population (Mexico, Snowy Plovers),males and females differed in size from the day of hatching, whereas growth rates dif-fered between the sexes in two populations (Turkey and United Arab Emirates, bothKentish Plovers). In contrast, a fourth population (Cape Verde, Kentish Plovers) showedno significant SSD in juveniles. Our results suggest that adult SSD can emerge at differ-ent stages of development (prenatal, postnatal and post-juvenile) in different populationsof the same species. We discuss the proximate mechanisms that may underlie thesedevelopmental differences.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Charadriiformes
development
growth
ontogeny
sexual size dimorphism
tarsus
waders
Megjelenés:Ibis. - 157 : 3 (2015), p. 590-600. -
További szerzők:Székely Tamás (1959-) (biológus) Küpper, Clemens Lee, Patricia L. M. Kosztolányi András (1971-) (biológus)
Pályázati támogatás:OTKA K81953
OTKA
LP2012-37/2012
egyéb
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