Abstract
Generalized linear models were used to derive indices of abundance for blue (Prionace glauca) and shortfin mako (Isurus oxyrinchus) sharks based on two components of the US Atlantic recreational fishery: (1) the private and charter boat recreational anglers covered by the Marine Recreational Fisheries Statistics Survey (MRFSS, 1981-2002) of the National Marine Fisheries Service and (2) Massachusetts shark tournaments (1991-2004). From the MRFSS data, blue shark catch per unit effort (CPUE) showed different trends for different regions, seasons, and fishing modes, implying that CPUE is not tracking blue shark abundance. Mako shark CPUE differed by mode for private versus charter boats, and showed no trend in either boat type. From the Massachusetts tournament data, blue shark CPUE showed different trends north and south of Cape Cod. Mako shark CPUE declined in the late 1990s in Massachusetts tournaments, then increased again in 2002.
| Original language | English (US) |
|---|---|
| Title of host publication | Sharks of the Open Ocean: Biology, Fisheries and Conservation |
| Publisher | wiley |
| Pages | 205-212 |
| Number of pages | 8 |
| ISBN (Print) | 9781444302516, 0632059958, 9780632059959 |
| DOIs | |
| State | Published - Jan 30 2009 |
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Keywords
- Angling
- Blue shark
- CPUE
- Game fishing
- Isurus oxyrinchus
- Mako shark
- Prionace glauca
- Recreational fishing
- Shark tournaments
ASJC Scopus subject areas
- Engineering(all)
- Agricultural and Biological Sciences(all)
Cite this
Case Study : Blue and Mako Shark Catch Rates in US Atlantic Recreational Fisheries as Potential Indices of Abundance. / Skomal, Gregory; Babcock, Elizabeth A; Pikitch, Ellen K.
Sharks of the Open Ocean: Biology, Fisheries and Conservation. wiley, 2009. p. 205-212.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Case Study
T2 - Blue and Mako Shark Catch Rates in US Atlantic Recreational Fisheries as Potential Indices of Abundance
AU - Skomal, Gregory
AU - Babcock, Elizabeth A
AU - Pikitch, Ellen K.
PY - 2009/1/30
Y1 - 2009/1/30
N2 - Generalized linear models were used to derive indices of abundance for blue (Prionace glauca) and shortfin mako (Isurus oxyrinchus) sharks based on two components of the US Atlantic recreational fishery: (1) the private and charter boat recreational anglers covered by the Marine Recreational Fisheries Statistics Survey (MRFSS, 1981-2002) of the National Marine Fisheries Service and (2) Massachusetts shark tournaments (1991-2004). From the MRFSS data, blue shark catch per unit effort (CPUE) showed different trends for different regions, seasons, and fishing modes, implying that CPUE is not tracking blue shark abundance. Mako shark CPUE differed by mode for private versus charter boats, and showed no trend in either boat type. From the Massachusetts tournament data, blue shark CPUE showed different trends north and south of Cape Cod. Mako shark CPUE declined in the late 1990s in Massachusetts tournaments, then increased again in 2002.
AB - Generalized linear models were used to derive indices of abundance for blue (Prionace glauca) and shortfin mako (Isurus oxyrinchus) sharks based on two components of the US Atlantic recreational fishery: (1) the private and charter boat recreational anglers covered by the Marine Recreational Fisheries Statistics Survey (MRFSS, 1981-2002) of the National Marine Fisheries Service and (2) Massachusetts shark tournaments (1991-2004). From the MRFSS data, blue shark catch per unit effort (CPUE) showed different trends for different regions, seasons, and fishing modes, implying that CPUE is not tracking blue shark abundance. Mako shark CPUE differed by mode for private versus charter boats, and showed no trend in either boat type. From the Massachusetts tournament data, blue shark CPUE showed different trends north and south of Cape Cod. Mako shark CPUE declined in the late 1990s in Massachusetts tournaments, then increased again in 2002.
KW - Angling
KW - Blue shark
KW - CPUE
KW - Game fishing
KW - Isurus oxyrinchus
KW - Mako shark
KW - Prionace glauca
KW - Recreational fishing
KW - Shark tournaments
UR - http://www.scopus.com/inward/record.url?scp=84947802696&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84947802696&partnerID=8YFLogxK
U2 - 10.1002/9781444302516.ch16
DO - 10.1002/9781444302516.ch16
M3 - Chapter
SN - 9781444302516
SN - 0632059958
SN - 9780632059959
SP - 205
EP - 212
BT - Sharks of the Open Ocean: Biology, Fisheries and Conservation
PB - wiley
ER -