2 Works

Data from: Natural allelic variations of xenobiotic metabolizing enzymes affect sexual dimorphism in Oryzias latipes

Takafumi Katsumura, Shoji Oda, Shigeki Nakagome, Tsunehiko Hanihara, Hiroshi Kataoka, Hiroshi Mitani, Shoji Kawamura & Hiroki Oota
Sexual dimorphisms, which are phenotypic differences between males and females, are driven by sexual selection. Interestingly, sexually selected traits show geographical variations within species despite strong directional selective pressures. This paradox has eluded many evolutionary biologists for some time, and several models have been proposed (e.g. ‘indicator model’ and ‘trade-off model’). However, disentangling which of these theories explains empirical patterns remains difficult, because genetic polymorphisms that cause variation in sexual differences are still unknown. In...

Data from: Adaptive acceleration in growth and development of salamander hatchlings in cannibalistic situations

Osamu Kishida, Ayumi Tezuka, Akiko Ikeda, Kunio Takatsu & Hirofumi Michimae
In most animal species, the hatchling stage is a highly vulnerable life history stage. In many fish and amphibian species, hatchling abundance varies substantially among sites and years, with the result that selection strength in conspecific interactions such as cannibalism is also variable. The variability of selection leads species to evolve phenotypic plasticity, and adaptive trait changes in hatchlings that depend on the density of conspecifics can therefore be expected. However, plasticity strategies in response...

Registration Year

  • 2014

Resource Types

  • Dataset


  • Kitasato University
  • Kyushu Institute of Technology
  • Hokkaido University
  • The Institute of Statistical Mathematics
  • University of Tokyo