+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Pup production, sex ratios, and survivorship in African wild dogs, Lycaon pictus



Pup production, sex ratios, and survivorship in African wild dogs, Lycaon pictus



Behavioral Ecology and Sociobiology 62(7): 1061-1067



The local resource enhancement (LRE) model predicts that in cooperatively breeding species, sex ratios will be biased in favor of the more helpful sex. In this study, we assess the assumptions underlying the LRE model in a population of cooperatively breeding wild dogs (Lycaon pictus) in Northern Botswana monitored over a 15-year period. In this population, litter size and pup survival to 1 year are strongly affected by pack size and the breeding female's age, but adult males have a stronger and more linear effect on females' reproductive performance than do adult females. This asymmetry in the benefits derived from male and female helpers is reflected in male-biased sex ratios in litters at the time pups emerge from the den. Sex ratio biases are most pronounced in the litters of the youngest mothers who live in significantly smaller packs than older females. The presence of potential rivals for the dominant female's position depresses pup production at the time of emergence, suggesting that competition among females for breeding positions may also contribute to the selective forces affecting birth sex ratios.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 033033530

Download citation: RISBibTeXText

DOI: 10.1007/s00265-007-0533-9


Related references

Pup Production, Sex Ratios, and Survivorship in African Wild Dogs, Lycaon pictus. Behavioral Ecology and Sociobiology 62(7): 1061-1067, 2008

Adoption in African wild dogs, Lycaon pictus. Journal Of Zoology (london). 240(1): 163-173, 1996

Rabies and African wild dogs Lycaon pictus.. Proceedings of the International Conference on Epidemiology Control and Prevention of Rabies in Eastern and Southern Africa, Lusaka, Zambia, June 2-5-1992: 133-140, 1992

Sex-biased dispersal in African wild dogs, Lycaon pictus. Animal Behaviour 52(6): 1067-1077, 1996

Food caching by African wild dogs (Lycaon pictus). Journal of Mammalogy, 614: 743-744, 1980

Contact with domestic dogs increases pathogen exposure in endangered African wild dogs (Lycaon pictus). Plos One 7(1): E30099-E30099, 2012

Sightings of African wild dogs Lycaon pictus in southeastern Kenya. Canid News, 74: 1-4, 2004

The effects of anthrax on endangered African wild dogs (Lycaon pictus). Journal of Zoology (London). June; 2362: 199-209, 1995

Cooperative hunting and sociality in African wild dogs, Lycaon pictus. Unknown, 2001

Six ecological factors that may limit African wild dogs, Lycaon pictus. Animal Conservation. February; 11: 1-9, 1998

The conservation role of captive African wild dogs (Lycaon pictus). Biological Conservation 100(2): 253-260, 2001

Recent records of African wild dogs (Lycaon pictus) from Ethiopia. Canid News, 42, 2001

Vocal Communication In Free-Ranging African Wild Dogs (Lycaon Pictus). Behaviour 137(10): 1271-1298, 2000

Identification of volatiles from the secretions and excretions of African wild dogs (Lycaon pictus). Journal of Chemical Ecology 38(11): 1450-1461, 2013

Studies of male reproduction in captive African wild dogs (Lycaon pictus). Animal Reproduction Science 100(3-4): 338-355, 2006