Animal cells and systems

The Korean Society for Integrative Biology (한국통합생물학회)
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Cannibalism in the Korean Salamander (Hynobius leechii: Hynobiidae, Caudata, Amphibia) Larvae

  • Park, Shi-Ryong (Department of Biology Education, Korea National University of Education) ;
  • Jeong, Ji-Young (Department of Biology Education, Korea National University of Education) ;
  • Park, Dae-Sik (Department of Science Education, Kangwon National University)
  • Published : 2005.03.01
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Abstract

Cannibalism plays important roles at the levels of both individual and population. To enhance overall rate of successful survival and reproduction, salamander larvae may have evolved to consume both conspecifics and heterospecifics. Consuming conspecifics could result in decreased inclusive fitness possibly by killing relatives. In several salamander species, discrimination of salamander larval siblings from non-siblings and heterospecifics to avoid such a risk has been reported. To determine whether the Korean salamander larvae consume non-siblings more often than siblings and to analyze prey preferences of the salamander larvae in several different experimental conditions, a series of foraging experiments was conducted in the laboratory. We found that 1) large cannibal larvae preyed on small sibling more often than small non-sibling in a mixed group of sibling and non-sibling, 2) cannibal larvae prefered to consume live, weak, and small larvae to dead, healthy, and large larvae, and 3) cannibal larvae consumed heterospecific tadpoles more often than conspecific nonsibling larvae in a mixed group. In addition, the larval density was positively correlated with the occurrence of spacing behavior, one of the agonistic predator behaviors among salamander larvae.

Keywords

References

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