A taxonomic revision of the genus Apostichopus (Holothuroidea: Stichopodidae) from Japan

Woo, Sau Pinn; Ogawa, Akito; Shau-Hwai, Aileen Tan; Yasin, Zulfigar; Kajihara, Hiroshi; Fujita, Toshihiko

doi:10.11646/zootaxa.4350.1.7

Cited by 516 publications

(2 citation statements)

References 11 publications

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“…Mature adults of A. japonicus were collected between April and June of 2019–2021 from the sandy bottom of the sea at a depth of 3–10 m around the Misaki Marine Biological Station, Kanagawa or at Onahama Port, Fukushima (36° 94′ N, 140° 90′ E) by SCUBA diving. All the collected individuals were morphologically diagnosed as the black type of the focal species, which was recently redescribed as A. armatus 27 , although it is still treated as A. japonicus in many recent studies . Collected individuals were kept in the laboratory tank at 17 °C to maintain the sexually mature conditions.…”

Section: Methodsmentioning

confidence: 99%

Hydrocoel morphogenesis forming the pentaradial body plan in a sea cucumber, Apostichopus japonicus

Udagawa

Ikeda

Oguchi

et al. 2022

Sci Rep

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Echinoderms constitute an animal phylum characterized by the pentaradial body plan. During the development from bilateral larvae to pentaradial adults, the formation of the multiple of five hydrocoel lobes, i.e., the buddings from the mesodermal coelom, is the firstly emerging pentameral character. The developmental mechanism underlying the hydrocoel-lobe formation should be revealed to understand the evolutionary process of this unique and highly derived body plan of echinoderms, although the morphogenetic mechanisms of hydrocoel lobes are largely uninvestigated. In this study, using the sea cucumber Apostichopus japonicus, in which hydrocoel is easily observable, the developmental process of hydrocoel lobes was described in detail, focusing on cell proliferation and rearrangement. Cell proliferation was not specifically distributed in the growing tips of the hydrocoel lobes, and inhibition of cell proliferation did not affect lobe formation. During lobe formation, the epithelium of the hydrocoel lobes was firstly thickened and then transformed into a simple epithelium, suggesting that tissue expansion via tissue remodeling contributes to the hydrocoel-lobe formation.

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Section: Methodsmentioning

confidence: 99%

Hydrocoel morphogenesis forming the pentaradial body plan in a sea cucumber, Apostichopus japonicus

Udagawa

Ikeda

Oguchi

et al. 2022

Sci Rep

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“…armatus 31 although it is still treated as A. japonicus in many recent studies. Collected individuals were kept in the laboratory tank at 17 ºC to maintain the sexually mature condition.…”

Section: Animalsmentioning

confidence: 99%

Hydrocoel Morphogenesis Forming the Pentaradial Body Plan in a Sea Cucumber, Apostichopus Japonicus

Udagawa

Ikeda

Oguchi

et al. 2021

Preprint

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Echinoderms constitute an animal phylum characterized by the pentaradial body plan. During the development from bilateral larvae to pentaradial adults, the formation of the multiple of five hydrocoel lobes, i.e., the buddings from the mesodermal coelom, is the firstly emerging pentameral character. The developmental mechanism underlying the hydrocoel-lobe formation should be revealed to understand the evolutionary process of this unique and highly derived body plan of echinoderms, although the morphogenetic mechanisms of hydrocoel lobes is largely uninvestigated. In this study, using the sea cucumber Apostichopus japonicus, in which the hydrocoel is easily observable, the developmental process of hydrocoel lobes was described in detail, focusing on the cell proliferation and rearrangement. Cell proliferation was not specifically distributed in the growing tips of the hydrocoel lobes and inhibition of the cell proliferation did not affect the lobe formation. During lobe formation, epithelium of the hydrocoel lobes were firstly stratified and then transformed into single-layered, suggesting that radial cell intercalation contributes to hydrocoel-lobe formation.

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Biology, ecology, aquaculture, and commercial products of Apostichopus californicus

Montgomery,

Suhrbier,

Pearce

2024

The World of Sea Cucumbers

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A taxonomic revision of the genus Apostichopus (Holothuroidea: Stichopodidae) from Japan

Cited by 516 publications

References 11 publications

Hydrocoel morphogenesis forming the pentaradial body plan in a sea cucumber, Apostichopus japonicus

Hydrocoel morphogenesis forming the pentaradial body plan in a sea cucumber, Apostichopus japonicus

Hydrocoel Morphogenesis Forming the Pentaradial Body Plan in a Sea Cucumber, Apostichopus Japonicus

Biology, ecology, aquaculture, and commercial products of Apostichopus californicus

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