Maternal investment and sex-allocation in the Galapagos fur seal, Arctocephalus galapagoensis

@article{Trillmich2004MaternalIA,
  title={Maternal investment and sex-allocation in the Galapagos fur seal, Arctocephalus galapagoensis},
  author={Fritz Trillmich},
  journal={Behavioral Ecology and Sociobiology},
  year={2004},
  volume={19},
  pages={157-164}
}
Maternal investment and sex-allocation were measured in a large, sexually dimorphic mammal, the Galapagos fur seal (Arctocephalus galapagoensis). The sex ratio at birth was 1.06. Males were always heavier than females and, at least initially, grew faster. Growth was variable from year to year suggesting energetic constraints on maternal investment. Sucking time conrrelated with milk intake. Mothers suckled yearling and 2-year-old sons more than daughters of the same age. Age at weaning appeared… CONTINUE READING
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References

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Sexual dimorphism and breeding systems in pinnipeds, ungulates, primates, and humans

RD Alexander, JL Hoogland, RD Howard, KM Noonan, PD Sherman
Chagnon NA and Irons W (eds) Evolutionary biology and human social behavior. An anthropological perspective • 1979
View 6 Excerpts
Highly Influenced

A new theory of sexual investment

Behavioral Ecology and Sociobiology • 2004
View 5 Excerpts
Highly Influenced

The genetical theory of natural selection.

Genetics • 2000
View 5 Excerpts
Highly Influenced

Marine primary productivity of the Galapagos archipelago

DC Maxwell
Ph D Thesis, • 1974
View 7 Excerpts
Highly Influenced

Natural history of the Galapagos fur seal ( ArctocephaIus galapagoensis , Heller )

F Trillmich
1984
View 1 Excerpt
Highly Influenced

Natural history of the Galapagos fur seal (ArctocephaIus galapagoensis, Heller) In: Perry R (ed) Key environments - Galapagos

F Trillmich
1984
View 2 Excerpts
Highly Influenced

The costs of reproduction to red deer hinds

TH Clutton-Brock, FE Guinness, SD Albon
J Anita Ecol • 1983
View 4 Excerpts
Highly Influenced

Parental investment in male and female offspring in mammals. In: King's College Sociobiology Group (eds) Current problems in sociobiology

TH Clutton-Brock, SD Albon
1982
View 3 Excerpts
Highly Influenced

The evolution of behaviors regulating density and age-specific sex ratios in a primate population

WP Dittus
Behaviour • 1979
View 4 Excerpts
Highly Influenced

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