NDLI: Genetic identification and morphology of naturally spawned eggs of the Japanese eel Anguilla japonica collected in the western North Pacific

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Genetic identification and morphology of naturally spawned eggs of the Japanese eel Anguilla japonica collected in the western North Pacific

Content Provider	Springer Nature Link
Author	Yoshinaga, Tatsuki Miller, Michael J. Yokouchi, Kazuki Otake, Tsuguo Kimura, Shingo Aoyama, Jun Watanabe, Shun Shinoda, Akira Oya, Machiko Miyazaki, Sachie Zenimoto, Kei Sudo, Ryusuke Takahashi, Tetsuya Ahn, Hyojin Manabe, Ryotaro Hagihara, Seishi Morioka, Hiroshi Itakura, Hikaru Machida, Masamichi Ban, Kazuyuki Shiozaki, Mayu Ai, Bunpei Tsukamoto, Katsumi
Copyright Year	2011
Abstract	Eggs of the Japanese eel Anguilla japonica collected in the western North Pacific were identified by onboard species-specific polymerase chain reaction (PCR) and DNA nucleotide sequencing after the cruise. Fish eggs of various species were collected by large plankton net tows at 12 stations along the southern part of the West Mariana Ridge on 19–25 May 2009. A total of 43 fish eggs were distinguished morphologically as possibly being of A. japonica. Thirty-one of those were analyzed by PCR, which included 15 eggs collected at 12°50–55′N, 141°15–20′E (in 5 tows) that showed positive results. The 16S ribosomal RNA (rRNA) gene sequences of eggs determined after the cruise indicated that 31 A. japonica eggs had been collected. The remaining eggs were of mesopelagic eel species (Serrivomeridae and Derichthyidae), or unidentified species. The morphological characteristics of the A. japonica eggs were consistent with those of artificially spawned eggs, except they had a slightly larger diameter. The egg diameter range did not overlap with those of mesopelagic eels of the Serrivomeridae, which often spawn in the same area as A. japonica. These results suggest that egg diameter and embryo shape can be used to morphologically identify naturally spawned A. japonica eggs.
Starting Page	983
Ending Page	992
Page Count	10
File Format	PDF
ISSN	09199268
Journal	Fisheries Science
Volume Number	77
Issue Number	6
e-ISSN	14442906
Language	English
Publisher	Springer Japan
Publisher Date	2011-10-13
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anguilla japonica Japanese eel Polymerase chain reaction Spawning Species identification West Mariana Ridge Food Science Fish & Wildlife Biology & Management Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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First capture of post-spawning female of the Japanese eel Anguilla japonica at the southern West Mariana Ridge

Video observation of an eel in the Anguilla japonica spawning area along the West Mariana Ridge

Erratum to: Video observation of an eel in the Anguilla japonica spawning area along the West Mariana Ridge

A new drifting underwater camera system for observing spawning Japanese eels in the epipelagic zone along the West Mariana Ridge

Histological characteristics of the oocyte chorion in wild post-spawning and artificially matured Japanese eels Anguilla japonica

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Erratum to: Video observation of an eel in the Anguilla japonica spawning area along the West Mariana Ridge

Evaluation of the larval distribution and migration of the Japanese eel in the western North Pacific

Genetic identification and morphology of naturally spawned eggs of the Japanese eel Anguilla japonica collected in the western North Pacific

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