REPRODUCTION IN BROWN LEMMINGS (LEMMUS TRIMUCRONATUS) AND ITS RELEVANCE TO THEIR CYCLE OF ABUNDANCE.

Reproduction in the brown lemming, Lemmus trimucronatus, was compared during all phases of their cyclic population fluctuations over a six-year period at Barrow, Alaska. The failure of density-dependent, intrinsic factors to affect reproduction significantly in the lemming, and the strong influence...

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Bibliographic Details
Main Author: Mullen, David A.
Other Authors: ARCTIC INST OF NORTH AMERICA ARLINGTON VA
Format: Text
Language:English
Published: 1967
Subjects:
Anatomy and Physiology
*RODENTS
*REPRODUCTION(PHYSIOLOGY)
ALASKA
POPULATION
FEMALES
MAMMARY GLANDS
SEX GLANDS
GROWTH(PHYSIOLOGY)
PERIODIC VARIATIONS
ECOLOGY
EMBRYOS
MALES
*lemmings
Barrow
Lemmus trimucronatus
Alaska
Online Access:http://www.dtic.mil/docs/citations/AD0676707
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0676707
Description
Summary:Reproduction in the brown lemming, Lemmus trimucronatus, was compared during all phases of their cyclic population fluctuations over a six-year period at Barrow, Alaska. The failure of density-dependent, intrinsic factors to affect reproduction significantly in the lemming, and the strong influence of extrinsic factors on all phases of reproductive effort and excess are discussed from the standpoint of evolution. A north-south gradient in the type and severity of population-controlling mechanisms is suggested. (Author) Pub. in University of California Publications in Zoology, v85.

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