2 Works

Divergence in life-history traits among three populations of the sea snake Emydocephalus anulatus

Richard Shine, Gregory Brown & Claire Goiran
Life-history traits such as rates of growth, survival and reproduction can vary though time within a single population, or through space among populations, due to abiotically-driven changes in resource availability. In terrestrial reptiles, parameters such as temperature and rainfall generate variation in life-histories – but other parameters likely are more important in marine systems. We studied three populations of sea snakes (Emydocephalus annulatus) in adjacent bays in the IndoPacific archipelago of New Caledonia. The extreme...

Colour polymorphism in the sea snake Emydocephalus annulatus

Richard Shine, Greg Brown & Claire Goiran
Evolutionary theory suggests that polymorphic traits can be maintained within a single population only under specific conditions, such as negative frequency-dependent selection or heterozygote advantage. Non-venomous turtle-headed sea snakes (Emydocephalus annulatus) living in shallow bays near Noumea in New Caledonia exhibit three colour morphs: black, black-and-white banded, and an intermediate (grey-banded) morph that darkens with age. We recorded morph frequencies during 18 consecutive years of surveys, and found that the numbers of recruits (neonates plus...

Registration Year

  • 2022
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Resource Types

  • Dataset
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Affiliations

  • Macquarie University
    2
  • University of New Caledonia
    2