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Masanori Kohda

As seen in: Nature, PLOS Biology, BioRxiv
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Articles

Repeated evolution of cooperative breeding and life history traits in Lake Tanganyika cichlids

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By Shun Satoh, Seiya Okuno, Takeshi Ito, Joachim G. Frommen, Taiga Saeki, Michio Hori, Ryo Hidaka, Ryoichi Inoue, Yuki Yoshio, Masaya Morita, Nobuyuki Kutsukake, Masanori Kohda, Fumihito Tashiro, Satoshi Awata
| Nature Verified
Abstract Cooperative breeding is a social system where offspring receive care not only from their parents but also from other group members. The life history traits related to the evolutionary transition towards such complex systems are still poorly understood. This study investigated the evolutionary transition from non-cooperative to cooperative breeding in lamprologine cichlid fishes endemic to Lake Tanganyika using phylogenetic comparative methods.
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Sperm competition influences sperm quality and seminal plasma protein expression among territorial males of the courtship cichlid

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By Masaya Morita, Shun Satoh, Takeshi Ito, Masanori Kohda
| BioRxiv
Abstract Sperm competition drives the plasticity of sperm quality and seminal fluid. However, how environmental and behavioral factors influence sperm competition and its outcome on the plasticity of sperm quality are unknown. In this study, we show males can asses the sperm competition level, and their fertilization-promoting sperm traits changes according to intensity. The promiscuous Tanganyikan cichlids Ophthalmotilapia ventralis perform their fertilization in the female mouth cavity.
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Fish recognizes itself in photographs

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By Masanori Kohda
| Dispatchist
Osaka [Japan], February 13 (ANI) A research team led by specially appointed Professor Masanori Kohda of the Graduate School of Science at Osaka Metropolitan University has proved that fish assume it's me when they see themselves in a photograph In this study, relevant experiments were conducted with Labroides dimidiatus, commonly known as a cleaner fish, which are known to be able to recognize themselves in mirrors and regularly attack other unfamiliar cleaner fish who intrude on their...
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