Document Detail


Birth timing for mountain lions (Puma concolor); testing the prey availability hypothesis.
MedLine Citation:
PMID:  23028569     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated potential advantages in birth timing for mountain lion (Puma concolor) cubs. We examined cub body mass, survival, and age of natal dispersal in relation to specific timing of birth. We also investigated the role of maternal age relative to timing of births. We captured mountain lion cubs while in the natal den to determine birth date, which allowed for precise estimates of the population birth pulse and age of natal dispersal. A birth pulse occurred during June-August. Body mass of cubs was related to litter size and timing of birth; heaviest cubs occurred in litters of 2, and those born after 1 July. Cubs born within pulse months exhibited similar survival to those born out of the pulse. We found that cubs born April-June dispersed at younger ages than those born after 1 July. There was less variation in birth timing for 1(st) litters of females than older females. We hypothesize that cubs born after the peak in births of neonate prey are advantaged by the abundance of vulnerable prey and those cubs and mothers realize an evolutionary advantage.
Authors:
Brian D Jansen; Jonathan A Jenks
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-09-24
Journal Detail:
Title:  PloS one     Volume:  7     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2012  
Date Detail:
Created Date:  2012-10-02     Completed Date:  2013-03-06     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e44625     Citation Subset:  IM    
Affiliation:
Department of Natural Resource Management, South Dakota State University, Brookings, South Dakota, United States of America. bighorns101@yahoo.com
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MeSH Terms
Descriptor/Qualifier:
Animals
Animals, Newborn
Birth Weight / physiology
Female
Litter Size / physiology
Male
Pregnancy
Puma / physiology*
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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