Variation in egg dimensions of the Tree Sparrow [Passer montanus L.] in North-Western Croatia

• Autorzy: Dolenec Z , Delic A. , Kralj J. , Dolenec P.
• Języki publikacji: EN

Abstrakty

EN

A nest-box-breeding population of Tree Sparrow was studied during 2004–2005 in the rural area (in locality Mokrice) in northwestern Croatia. The mean egg length was 18.9 mm, egg breadth – 14.1 mm, egg volume – 1937.8 mm³ and egg shape index – 1.34. No significant correlation between egg volume and clutch size was found (P> 0.05) and there is no significant difference in those parameters between years of study (2004 and 2005) as well as between successive clutches in the given year. The repeatability of egg dimensions (r = 0–1) of females that bred in an area three times a year was estimated. The egg dimensions are highly repeatable r = 0.78, 0.63, 0.72 and 0.75 for length, breadth, volume and shape index, respectively. The results suggest that in Tree Sparrow population one should expect relatively high heritability of egg dimensions.

Słowa kluczowe

EN

Croatia; egg dimension; Passer montanus; variation; Tree Sparrow; rural area

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2007
• Tom: 55
• Numer: 4
• Opis fizyczny: p.841-845,ref.

Twórcy

autor

Dolenec Z

• University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia

autor

Delic A.

autor

Kralj J.

autor

Dolenec P.

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