Individual variation in body color in the field cricket Teleogryllus occipitalis (Orthoptera: Gryllidae) |
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| Authors: | Taiki Nagai Takashi Kuriwada |
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| Affiliation: | Laboratory of Zoology, Faculty of Education, Kagoshima University, Kagoshima, Japan |
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| Abstract: | Body color of animals may affect individual fitness through direct effects on various processes, such as predatory avoidance, thermoregulation, UV resistance, and mating behavior. Body color variation of the field cricket Teleogryllus occipitalis (Audinet‐Serville) (Orthoptera: Gryllidae) is often observed. We quantified the individual variation in body color of this species by measuring the luminance of hind leg femur. Thereafter, we examined whether the body color was a heritable trait or not using parent–offspring analysis. In addition, the effect of body color of both parents on body size, sex ratio, and survival rate of progeny was investigated. The results showed that maternal body color was not heritable, whereas paternal body color was correlated with the body color of the progeny. Body size and sex ratio were not correlated with body color of parents. Although paternal body color did not affect the survival rate of the progeny beyond the stage of final instar nymph, progeny survival rate significantly increased with darkness of maternal body. |
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| Keywords: | body size heritability luminance sex ratio survival rate |
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