Tytuł:

Intraindividual seasonal decline of egg-volume in common tern Sterna hirundo

Inny tytuł:

Acta Ornithologica, vol. 34, no. 2 ; Spadek wielkości znoszonych jaj jako cecha osobnicza u rybitwy rzecznej ; Decline of egg volume in common tern

Twórca:

González-Solís, Jacob ; Becker, Peter H. ; Jover, Lluis ; Ruiz, Xavier

Współtwórca:

Polska Akademia Nauk. Muzeum i Instytut Zoologii ; Meeting of the European Ornithologists' Union (2 ; 1999 ; Gdańsk)

Wydawca:

Muzeum i Instytut Zoologii PAN

Miejsce wydania:

Warszawa

Data wydania/powstania:

1999

Opis:

Referat wygłoszony na Second Meeting of the European Ornithologists' Union ; Bibliogr. p. 189-190 ; P. [185]-190 : ill. ; 27 cm ; Streszcz. pol. ; Abstract in Polish

Typ obiektu:

Journal/Article

Temat i słowa kluczowe:

Common Tern ; eggs ; measurement ; Germany, Northern ; North Sea coast ; congresses ; individual age ; laying date ; interindividual differences ; egg-volume ; terns ; birds ; Sterna hirundo ; Sternidae ; Aves

Abstrakt:

The seasonal decline in egg-volume on the basis of the individual changes in 35 known-age female Common Terns Sterna hirundo was studied with data available for 3-6 years. Interindividual differences were significant for both laying dates and egg-volume. Thus, to examine whether the decline was an effect of an assortment of females with the timing of breeding according to their individual egg-volume, the individual values of laying date were correlated with egg-volume. Correlation was not significant, suggesting that seasonal decline in egg-volume was not due to interindividual differences. Instead, egg-volume showed a gradual decrease with the progress of the season at intraindividual level i.e. the later an individual female laid in the season the smaller was the egg-volume. Moreover, the seasonal decline in egg-volume was not due to a simultaneous increase in egg-volume with an advancement of the timing of breeding with age, since the rate of seasonal decrease in egg-volume was similar for young and old birds. Individual average of laying date accounted for 22% of the individual average of fledgling production whereas egg-volume was not significantly correlated with fledging production. Thus, it is suggested that seasonal decline in egg-volume is a non-adaptive consequence of physiological effect of condition on both timing of breeding and egg-volume.

Czasopismo/Seria/cykl:

Acta Ornithologica

Tom:

34

Zeszyt:

2

Strona pocz.:

185

Strona końc.:

190

Typ zasobu:

Text

Szczegółowy typ zasobu:

Article

Format:

application/pdf

Źródło:

MiIZ PAN, call no. P.257, Vol. 34, No 2 ; MiIZ PAN, call no. P.4568, Vol. 34, No 2 ; kliknij tutaj, żeby przejść

Język:

eng ; pol

Prawa:

Rights Reserved - Restricted Access

Zasady wykorzystania:

Copyright-protected material. Access only on terminals at the Museum and Institute of Zoology of the Polish Academy of Sciences, may be used within the limits of statutory user freedoms.

Digitalizacja:

Museum and Institute of Zoology of the Polish Academy of Sciences

Lokalizacja oryginału:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

Dofinansowane ze środków:

Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure ; European Union. European Regional Development Fund

Dostęp:

Closed