Biometric variability and sexual size dimorphism in the Great Knot Calidris tenuirostris

Dorofeev, D.; Ivanov, A.; Khudyakova, E.; Verkuil, Y.; Piersma, T.; Meissner, W.

Авторы: Dorofeev D., Ivanov A., Khudyakova E., Verkuil Y., Piersma T., Meissner W.
Журнал: The European Zoological Journal
Том: 91
Номер: 1
Год издания: 2024
Издательство: Taylor & Francis
Местоположение издательства: United Kingdom
Первая страница: 64
Последняя страница: 74
DOI: 10.1080/24750263.2023.2293120
Аннотация: The Great Knot is a species from the Scolopacidae family of waders migrating within the East Asian-Australasian Flyway, andstudies on this species have contributed greatly to understanding of migration ecophysiology and migration strategies in long-distance migrants. In this paper, we provide the first description of biometric variability and sexual size dimorphism in GreatKnots. During the study on the Kamchatka Peninsula, 683 adults and 229 juveniles were measured and sexed molecularly. Inadults, the mean measurements of females were larger than in males, except for tarsus length. In juveniles, at the early stage ofmigration from breeding to wintering grounds, apparently growth was not complete. Sexual dimorphism was small, with onlywing length being significantly longer in females than in males. All dimensions of juveniles were smaller than those of adults,especially in bill length. The most sexually dimorphic trait in both adults and juveniles was wing length, and the most effectivediscriminant function with wing length as a single predictor correctly identified the sex of 76% of birds in both age classes.However, molecular sexing is the method of choice for reliable sexing, especially in juveniles.
Добавил в систему: Дорофеев Дмитрий Сергеевич

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Biometric variability and sexual size dimorphism in the Great Knot Calidris tenuirostrisстатья

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