The effects of barotrauma on the catch-and-release survival of southern California nearshore and shelf rockfish (Scorpaenidae, Sebastes spp.)

被引:90
作者
Jarvis, Erica T. [1 ]
Lowe, Christopher G. [1 ]
机构
[1] Calif State Univ Long Beach, Dept Biol Sci, Long Beach, CA 90840 USA
关键词
D O I
10.1139/F08-071
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Two experiments were used to assess the effects of barotrauma on initial capture survival and short-term post-recompression survival of line-caught (range 18-225 m) southern California rockfish (Sebastes spp.). Occurrence of external and internal signs of barotrauma was characterized across all species. Despite species-specific differences in the extent of barotrauma observed, initial capture survival of rockfish held in a live well for a 10-min period following capture was 68% overall (19 species, n = 168). Overall 2-day survival of rockfish following recompression in cages was also 68% (17 species, n = 257). Short-term survival varied across species (range 36% to 82%), as did the occurrence of external signs of barotrauma. The degree of external signs of barotrauma was not a significant predictor of initial capture survival or short-term survival. The most significant predictor of short-term survival was surface holding time, with short-term survival increasing with decreasing surface holding time. These results suggest that rapid recompression of rockfish can significantly decrease discard mortality and could potentially enhance rockfish conservation.
引用
收藏
页码:1286 / 1296
页数:11
相关论文
共 40 条
[1]   VERTICAL MOVEMENTS OF COD (GADUS-MORHUA L) IN THE OPEN SEA AND THE HYDROSTATIC FUNCTION OF THE SWIMBLADDER [J].
ARNOLD, GP ;
WALKER, MG .
ICES JOURNAL OF MARINE SCIENCE, 1992, 49 (03) :357-372
[2]   A review of catch-and-release angling mortality with implications for no-take reserves [J].
Bartholomew, A ;
Bohnsack, JA .
REVIEWS IN FISH BIOLOGY AND FISHERIES, 2005, 15 (1-2) :129-154
[3]  
BEYER DL, 1976, UNDERSEA BIOMED RES, V3, P121
[4]  
Bruesewitz Richard E., 1993, North American Journal of Fisheries Management, V13, P346, DOI 10.1577/1548-8675(1993)013<0346:EODTES>2.3.CO
[5]  
2
[6]  
Burns K., 2002, AM FISH SOC S, V30, P148
[7]  
Butler JL, 2003, FISH B-NOAA, V101, P260
[8]  
Collins Mark R., 1999, North American Journal of Fisheries Management, V19, P828, DOI 10.1577/1548-8675(1999)019<0828:SBDIBS>2.0.CO
[9]  
2
[10]   Key principles for understanding fish bycatch discard mortality [J].
Davis, MW .
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 2002, 59 (11) :1834-1843