|| 要旨トップ | 目次 |||日本生態学会第61回全国大会 (2014年3月、広島) 講演要旨
一般講演（口頭発表） F0-04 (Oral presentation)
Brain size is enormously diverse among vertebrates. This variation is often considered as the adaptation to different cognitive environments. However, the cognitive adaptation is not the only source of variation and other factors also play roles in forming contemporary brain diversity. Organisms need their parts to be integrated to some degree to function as a whole. However, the integration between parts is not complete but there are modules that are relatively independent. In brain evolution, the integration between jaw, skull, and brain may have formed the evolutionary trade-off between brain size and jaw size in hominids. However, the role of integration in brain evolution has been discussed only within hominid primates. Here, we used geometric morphometrics and phylogenetic comparative methods in cichlids from Lake Tanganyika to test if morphological integration influences brain size evolution. We found a strong integration between anterior part and posterior part of the head. Also, head morphology was evolutionary correlated with brain size and feeding ecology. Our results suggest that the morphological integration may influence brain evolution in cichlids.