Density-related pattern of variation in body growth, body size and annual productivity in the common hamster

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F18%3A00490185" target="_blank" >RIV/68081766:_____/18:00490185 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/18:73591806

Result on the web

<a href="http://dx.doi.org/10.1016/j.mambio.2018.03.006" target="_blank" >http://dx.doi.org/10.1016/j.mambio.2018.03.006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mambio.2018.03.006" target="_blank" >10.1016/j.mambio.2018.03.006</a>

Result language

angličtina

Original language name

Density-related pattern of variation in body growth, body size and annual productivity in the common hamster

Original language description

Body size is one of the most influential life history traits, often covarying with population density. While decreasing in some organisms, such as large herbivores, body size may increase with population density in small ones, such as voles. Unlike small voles, the common hamster (Cricetus cricetus L.), the endangered Eurasian rodent, does not exhibit cyclic population dynamics but it does have large variation in population numbers and high reproductive capacity, yet, its density-related processes which affect morphological traits are still poorly understood. We analysed density-related changes in body growth rates and body size (length and weight) collected in a natural population over 9 years, separately for each sex and age category (subadult/adult). Annual population density, the maximum Jolly-Seber estimate of population size per hectare reached in that year, was found to increase linearly with productivity index and with the length of the breeding season. Body length growth rates increased with population density in adults, but not in subadults. In adults, body length was found to increase with population density, however, we found no relationship between body weight and population density. The evidence for changes in subadults' body size with population density was weak. These results suggest that, in years of peak numbers, adult hamsters grow faster, are longer and breed for longer time periods, thus having higher productivity index. Body size is therefore positively related to variation in population density, commonly referred to as the Chitty effect. Based on our findings, we conclude that variation in individual's body growth rate and size drives the variation in productivity which in turn causes the changes in hamster population density.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Mammalian Biology

ISSN

1616-5047

e-ISSN

—

Volume of the periodical

91

Issue of the periodical within the volume

July

Country of publishing house

DE - GERMANY

Number of pages

7

Pages from-to

34-40

UT code for WoS article

000432583400006

EID of the result in the Scopus database

2-s2.0-85044458177