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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第66巻 第2号 >

Anatomical Features of the Pelvic Girdle in the Family Ateleopodidae(Pisces: Ateleopodiformes)

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/bull.fish.66.2.59

Title: Anatomical Features of the Pelvic Girdle in the Family Ateleopodidae(Pisces: Ateleopodiformes)
Authors: Atsumi, Keisuke1 Browse this author
Authors(alt): 渥美, 圭佑1
Keywords: Ateleopodiformes
Ateleopus japonicus
Morphology
Pelvic girdle
Issue Date: 10-Aug-2016
Publisher: 北海道大学大学院水産科学研究院
Journal Title: 北海道大学水産科学研究彙報
Volume: 66
Issue: 2
Start Page: 59
End Page: 61
Abstract: The osteology and myology of the pelvic girdle in a deep sea ateleopodiform fish, Ateleopus japonicus, were studied. The pelvic girdle is characterized by four unique features : (1) a pelvis that consists of a cartilaginous plate with a pair of large openings, (2) a pelvic fin that is thread-like owning to a greatly elongated first fin ray and subsequent rays that are concealed under the skin, (3) a greater number of muscles inserted on the first pelvic ray than in other teleosts, and (4) a pelvis that supports fin rays laterally, allowing muscles to insert on the first pelvic ray both anteriorly and posteriorly. The latter three characteristics suggest that the pelvic fin of A.japonicus is highly flexible and mobile. As demonstrated in other fishes with thread-like pelvic fins, this fin may not function in swimming, but may function in other actions such an searching for prey or signaling.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/62645
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第66巻 第2号

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