Loss of gill rakers and teeth in adult specimens of barracudina Arctozenus risso (Aulopiformes: Paralepididae) from the western North Atlantic
Abstract Two unusual adult specimens of the barracudina Arctozenus risso were caught in midwater trawls off the Flemish Cap in April 2016. These specimens displayed atypical traits including lack of teeth and gill rakers and fragile jaw bones; a combination of morphological examination and mtDNA seq...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/jfb.14559 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14559 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14559 |
Summary: | Abstract Two unusual adult specimens of the barracudina Arctozenus risso were caught in midwater trawls off the Flemish Cap in April 2016. These specimens displayed atypical traits including lack of teeth and gill rakers and fragile jaw bones; a combination of morphological examination and mtDNA sequencing confirmed species identification . Both specimens exhibited ripening ovaries and testes, confirming simultaneous hermaphroditism. These fish represent the first records of lateāstage loss of features in the genus Arctozenus and may indicate a relationship to spawning in larger specimens. |
---|