Inny tytuł:

Acta Ornithologica, vol. 34, no. 2 ; Fenotypowa dostosowalność żołądka mięśniowego ptaków

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

Opis:

Referat wygłoszony na Second Meeting of the European Ornithologists' Union ; Bibliogr. p. 153 ; P. [149]-153 : ill. ; 27 cm ; Abstract in Polish

Typ obiektu:

Journal/Article

Abstrakt:

Evolutionary biology presumes that organ capacities match their natural loads. Therefore, organ systems are expected to show a reversible, repeatable and rapid phenotypic response to fluctuating conditions that is directional and scaled. In this study, phenotypic responses of the gizzard of adult Japanese quails Coturnix japonica to experimental mismatches of load and capacity were tested by a series of diet-switching experiments (involving an increased content of non-digestable fibre, NDF, in the diet). The results of all experiments were in accordance with the predictions made from the hypothesis that there is matching between loads and capacities: (1) the observed phenotypic responses are directional and scaled to the demands, i.e. increasing NDF elicits an increase in gizzard size. When the proportion of NDF in the diet was raised from 1% to 45%, the gizzard was more than twice as large as in the control group; (2) size responses were reversible, and reduced NDF was followed by a decrease of gizzard size; (3) phenotypic responses could be elicited repeatedly in three successive trials; (4) excess capacities were down-regulated and insufficient capacities were up-regulated; (5) the responses followed changes of loads with almost no time lag, with size changes measurable within 24 hours.

Czasopismo/Seria/cykl:

Acta Ornithologica

Tom:

34

Zeszyt:

2

Strona pocz.:

149

Strona końc.:

153

Szczegółowy typ zasobu:

Article

Format:

application/pdf

Identyfikator zasobu:

oai:rcin.org.pl:45212

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