The Effect of Inbreeding on the Reproductive Rate of Yellow Steppe Lemmings (Eolagurus luteus, Rodentia, Cricetidae) in a Laboratory Colony

Streltsov, V. V.; Ilchenko, O. G.; Kotenkova, E. V.

doi:10.1134/s1062359023070270

Biol Bull Russ Acad Sci

2023

DOI: 10.1134/s1062359023070270

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The Effect of Inbreeding on the Reproductive Rate of Yellow Steppe Lemmings (Eolagurus luteus, Rodentia, Cricetidae) in a Laboratory Colony

V. V. Streltsov,

O. G. Ilchenko,

E. V. Kotenkova

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2024

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Long-term effect of inbreeding in the yellow steppe lemming, Eolagurus luteus, captive colony

Streltsov,

Ilchenko,

Kotenkova

2024

Current Zoology

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In the current research, we investigated the impact of gradually increasing inbreeding on the life span and reproductive rate of yellow steppe lemmings (Eolagurus luteus) that reproduced in the Moscow Zoo. The focal captive colony existed during 2017–2021. The studied animals belonged to the second–tenth generations. The founders of the colony were five females and five males originated from three females and four males live-trapped in the Zaisan basin (Kazakhstan). The degree of their descendant relatedness progressively increased. The animals intended to be used for reproduction were distributed to the pairs with unfamiliar partners. We constructed the pedigree of 177 individuals and calculated their inbreeding coefficients. This parameter varied from 0 to 0.29, the maximum values were registered in the lemmings of seventh–tenth generations. We measured the life span of 61 individuals and used information about the reproduction or its absence in 45 pairs. A substantial decline in the individual life span and reproductive parameters in the breeding pairs with a progressive increase of the inbreeding coefficients was registered. The number of delivered litters, born pups, and young lived up to the age of puberty significantly depended on the level of mother inbreeding. The noticeable traits of inbreeding depression in the colony appeared in 2019–2020, when the offspring inbreeding coefficients reached approximately 0.2. Therefore, we assume that if the E. luteus population originates from a relatively small number of non-inbred and unfamiliar individuals, then the successful reproduction without significant inbreeding depression will continue for several generations of offspring.

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Long-term effect of inbreeding in the yellow steppe lemming, Eolagurus luteus, captive colony

Streltsov,

Ilchenko,

Kotenkova

2024

Current Zoology

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show abstract

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The Effect of Inbreeding on the Reproductive Rate of Yellow Steppe Lemmings (Eolagurus luteus, Rodentia, Cricetidae) in a Laboratory Colony

Cited by 1 publication

References 25 publications

Long-term effect of inbreeding in the yellow steppe lemming, Eolagurus luteus, captive colony

Long-term effect of inbreeding in the yellow steppe lemming, Eolagurus luteus, captive colony

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