Inny tytuł:

Acta Ornithologica, vol. 39, no. 1 ; Niska częstotliwość występowania poligynii u rokitniczki na rozlewiskach Nidy

Współtwórca:

Museum and Institute of Zoology, Polish Academy of Sciences

Wydawca:

Museum & Institute of Zoology

Miejsce wydania:

Warszawa

Opis:

Bibliogr. p. 85-86 ; P. [83]-86 : ill. ; 27 cm

Typ obiektu:

Journal/Article

Abstrakt:

In 1996-2002, 227 breeding attempts were studied in a colour-ringed Sedge Warbler population. Although 11% of males in this population resumed singing in order to mate with another female after their first females had laid eggs, only two polygynous males (i.e. 0.6%) were recorded. This is a very low value in comparison to other studies (ca. 7% on average). The low level of polygyny is attributable to the low food abundance in a natural floodplain, as the nestlings in this population were fed on predominantly small food items. Both polygynous males were recorded in 2002; this was unusual, because flooding in early June (around the hatching date) destroyed most of the broods. This could have led to an influx of new females into the study area, a change in the operational sex ratio, and new mating opportunities for males.

Czasopismo/Seria/cykl:

Acta Ornithologica

Tom:

39

Zeszyt:

1

Strona pocz.:

83

Strona końc.:

86

Szczegółowy typ zasobu:

Journal

Format:

text/xml

Identyfikator zasobu:

oai:rcin.org.pl:55513

Źródło:

MiIZ PAN, call no. patrz sygn. czas. P.257-39-1 ; MiIZ PAN, call no. patrz sygn. czas. P.4568-39-1 ; kliknij tutaj, żeby przejść

Język:

eng

Prawa:

Rights Reserved - Free Access

Zasady wykorzystania:

Copyright-protected material. 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

Dostęp:

Open