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Sexual system in the tanaidacean Falsapseudes bowmani(Crustacea: Malacostraca: Peracarida)
| Title: | Sexual system in the tanaidacean Falsapseudes bowmani(Crustacea: Malacostraca: Peracarida) |
| Authors: | Kakui, Keiichi Browse this author →KAKEN DB | | Hiruta, Chizue Browse this author →KAKEN DB | | Uyeno, Daisuke Browse this author |
| Keywords: | anatomy | | cavernicolous | | reproduction | | sexual dimorphism | | simultaneous hermaphroditism |
| Issue Date: | Sep-2019 |
| Publisher: | Wiley |
| Journal Title: | Invertebrate Biology |
| Volume: | 138 |
| Issue: | 3 |
| Start Page: | e12257 |
| Publisher DOI: | 10.1111/ivb.12257 |
| Abstract: | With more than 40,000 species, Malacostraca is the most diverse crustacean class. Most
malacostracans are gonochoristic, but simultaneous hermaphrodites are also known.
Tanaidacea is one of two malacostracan orders that includes simultaneously hermaphroditic
species; so far, simultaneous hermaphroditism has been confirmed externally and internally
in only two tanaidacean species, both in the genus Apseudes (Apseudidae). Here we show,
through external and internal morphological observations of fixed specimens, that the
apseudid Falsapseudes bowmani is a simultaneous hermaphrodite, making Falsapseudes the
second tanaidacean genus in which simultaneous hermaphroditism has been confirmed both
externally and internally. In this species, the epistome (a projection on the clypeus) was thick
and elongate in large specimens but was thin and spiniform in smaller specimens; the
brooding of eggs or embryos was observed only in thin-epistome individuals, although a pair
of ovaries was confirmed in both thick- and thin-epistome individuals. This suggests that
individuals with a thick epistome may act as males while also retaining the female
reproductive organs. |
| Rights: | This is the accepted version of the following article: Keiichi Kakui, Chizue Hiruta and Daisuke Uyeno. Sexual system in the tanaidacean Falsapseudes bowmani (Crustacea: Malacostraca: Peracarida). Invertebrate Biology 138(3) 2019, which has been published in final form at https://doi.org/10.1111/ivb.12257. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/79188 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 角井 敬知
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