Reproduction in laboratory colonies of bank vole, Clethrionomys glareolus, originating from populations with different degrees of cyclicity [survival, pregnancy]

Reproduction in two laboratory colonies of bank vole, Clethrionomys glareolus (Schreb.), established with animals from the increase phase of a strongly cyclic population was compared with that in a colony originating from a relatively stable population. Most reproductive variables were influenced by...

Full description

Saved in:
Bibliographic Details
Published in:Oikos 1983-02, Vol.40 (2), p.182-188
Main Authors: Gustafsson, T.O, Andersson, C.B, Westlin, L.M. (Lund Univ. (Sweden). Dept. of Zoology)
Format: Article
Language:English
Subjects:
ANIMAL LITTER
Animals
BODY MEASUREMENTS
Breeding
Breeding seasons
CAMA (ANIMALES)
Clethrionomys glareolus
CRECIMIENTO
CROISSANCE
Female animals
GROWTH
LITIERE D'ETABLE
Litter size
Male animals
MEDICION DEL CUERPO
MENSURATION CORPORELLE
PERIODICIDAD
PERIODICITE
PERIODICITY
Population growth
Population size
REPRODUCCION
REPRODUCTION
RODENTS
ROEDORES
RONGEUR
Suckling
Voles
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Reproduction in two laboratory colonies of bank vole, Clethrionomys glareolus (Schreb.), established with animals from the increase phase of a strongly cyclic population was compared with that in a colony originating from a relatively stable population. Most reproductive variables were influenced by the same factors in the cyclic and non-cyclic animals, but considerable quantitative differences were seen. The cyclic animals were heavier, had larger litters, and faster growth of young. Survival of young was much lower and the intervals between litters were longer in cyclic animals. The results are discussed in relation to reproductive differences between the original populations and in relation to a current hypothesis of evolution of different reproductive rates in populations with different degrees of cyclicity. /// Сравнивали размножение у двух лабораторных колоний полевни Clethrionomys glareolus (Schreb.), представленных животными, собранными во время фазы подъема популяции со строгим циклом, с колониями, основанными особами из относителъно стабилъных популяций. Болъшая частъ репродуктивных переменных определяется одинаковыми факторами у циклических и нециклических популяций, но имеются и значителъные количественные различия. Животные из циклических популяций тяжелее, имеют болъший помет, с более быстрым ростом молодого поколения. Выживаемостъ молодых особей гораздо ниже, и интервал между появлением потомства болъше у циклических популяций. Обсуждаются резулътаты исследования репродуктивных различий у исходных популяций и имеющиеся гипотезы возникновения различий в скорости размножения в популяциях с разной степенъю цикличности.
ISSN:0030-1299
1600-0706
DOI:10.2307/3544581