Premium
Regeneration of Adipose Fins Given Complete and Incomplete Clips
Author(s) -
Thompson Daniel A.,
Lee Blankenship H.
Publication year - 1997
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8675(1997)017<0467:roafgc>2.3.co;2
Subject(s) - adipose tissue , regeneration (biology) , fish fin , fin , fish <actinopterygii> , oncorhynchus , biology , anatomy , fishery , endocrinology , microbiology and biotechnology , materials science , composite material
Three groups of 12‐month‐old coho salmon Oncorhynchus kisutch (averaging 21 g/fish; 120 mm fork length) were adipose‐fin‐clipped in February 1993, and each group was coded‐wire‐tagged with a distinct tag code. We clipped the entire adipose fin from one group, the back two‐thirds of the adipose fin from the second group, and the top two‐thirds of the adipose fin from the third group. The fish were released in May 1993. During autumn 1994 (21 months after clipping), we checked all returning adult coho salmon for the presence of a coded wire tag, whether or not the adipose fin was present. Adipose fins were scored as having “no regeneration,” “partial regeneration,” or “complete regeneration” without knowledge of the type of clip applied. No fish from which the entire adipose fin was clipped exhibited regeneration. Complete regeneration was observed in 23% of the fish that had either the back two‐thirds or the top two‐thirds of the adipose fin clipped and partial regeneration was observed in an additional 35% and 63%, respectively.