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Studies of the biology of the lesser weever fish Trachinus vipera Cuvier
Author(s) -
Lewis David B.
Publication year - 1976
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1976.tb03926.x
Subject(s) - operculum (bryozoa) , biology , benthic zone , anatomy , habit , water flow , fish <actinopterygii> , zoology , fishery , geology , psychology , psychotherapist , soil science , genus
The anatomical adaptations to a benthic mode of life are reviewed and discussed. The functioning of the pectoral, pelvic and anal fins in moving sand from underneath the animal, during burrowing, are described. Jets of water directed downwards from the gill chambers, produce a fluid sand‐water mixture which facilitates the functioning of the pelvic fins, and the movement of the head into the sand. The direction of water movements associated with gill ventilation, which are propelled almost exclusively by the branchiostegal rays, are outlined. Inhalation is normally through the mouth, which is protected by papillae, from being blocked by sand. When the mouth is covered with sand, the water flow through it is reduced, and some inhalation occurs through the dorsal margin of the operculum, involving use of the supracliethrum.