Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER
External morphological characters and sexes of Chionodraco myersi which was caught in the Ross Sea were examined. The relative length of the longest dorsal spine to the standard length of fish varied from 9.0% to 30.0% of the standard length. A histological observation revealed that twenty-three fem...
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National Institute of Polar Research
1981
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ftdoajarticles:oai:doaj.org/article:250d045ebe4948d18af4adbed20c6db7 2023-05-15T18:07:33+02:00 Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER Tetsuo Iwami Tokiharu Abe 1981-09-01T00:00:00Z https://doi.org/10.15094/00008256 https://doaj.org/article/250d045ebe4948d18af4adbed20c6db7 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00008256 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008256 0085-7289 2432-079X https://doaj.org/article/250d045ebe4948d18af4adbed20c6db7 Antarctic Record, Iss 73, Pp 30-36 (1981) Geography (General) G1-922 article 1981 ftdoajarticles https://doi.org/10.15094/00008256 2022-12-31T02:32:32Z External morphological characters and sexes of Chionodraco myersi which was caught in the Ross Sea were examined. The relative length of the longest dorsal spine to the standard length of fish varied from 9.0% to 30.0% of the standard length. A histological observation revealed that twenty-three female specimens had the lower dorsal fin (9.4%∿16.3% of the standard length) and eight male specimens had the higher dorsal fin (22.5%∿30.0% of the standard length). As the morphological characters of the types of Chionodraco markhami resemble those of the "high dorsal" group, it seems that the species name of Ch. markhami should be given to males of Ch. myersi. The present results support the opinion that Ch. markhami is a synonymy of Ch. myersi. Article in Journal/Newspaper Ross Sea Directory of Open Access Journals: DOAJ Articles DeWitt ENVELOPE(159.833,159.833,-77.200,-77.200) Ross Sea |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Tetsuo Iwami Tokiharu Abe Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER |
topic_facet |
Geography (General) G1-922 |
description |
External morphological characters and sexes of Chionodraco myersi which was caught in the Ross Sea were examined. The relative length of the longest dorsal spine to the standard length of fish varied from 9.0% to 30.0% of the standard length. A histological observation revealed that twenty-three female specimens had the lower dorsal fin (9.4%∿16.3% of the standard length) and eight male specimens had the higher dorsal fin (22.5%∿30.0% of the standard length). As the morphological characters of the types of Chionodraco markhami resemble those of the "high dorsal" group, it seems that the species name of Ch. markhami should be given to males of Ch. myersi. The present results support the opinion that Ch. markhami is a synonymy of Ch. myersi. |
format |
Article in Journal/Newspaper |
author |
Tetsuo Iwami Tokiharu Abe |
author_facet |
Tetsuo Iwami Tokiharu Abe |
author_sort |
Tetsuo Iwami |
title |
Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER |
title_short |
Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER |
title_full |
Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER |
title_fullStr |
Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER |
title_full_unstemmed |
Sexual dimorphism observed in Chionodraco myersi DEWITT and TYLER |
title_sort |
sexual dimorphism observed in chionodraco myersi dewitt and tyler |
publisher |
National Institute of Polar Research |
publishDate |
1981 |
url |
https://doi.org/10.15094/00008256 https://doaj.org/article/250d045ebe4948d18af4adbed20c6db7 |
long_lat |
ENVELOPE(159.833,159.833,-77.200,-77.200) |
geographic |
DeWitt Ross Sea |
geographic_facet |
DeWitt Ross Sea |
genre |
Ross Sea |
genre_facet |
Ross Sea |
op_source |
Antarctic Record, Iss 73, Pp 30-36 (1981) |
op_relation |
https://doi.org/10.15094/00008256 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008256 0085-7289 2432-079X https://doaj.org/article/250d045ebe4948d18af4adbed20c6db7 |
op_doi |
https://doi.org/10.15094/00008256 |
_version_ |
1766179750798163968 |