Comparisons of Shark Catch Rates on Longlines Using Rope/Steel (Yankee) and Monofilament Gangions

Branstetter, Steven and Musick, John A. (1993) Comparisons of Shark Catch Rates on Longlines Using Rope/Steel (Yankee) and Monofilament Gangions. Marine Fisheries Review, 55(3), pp. 4-9.

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Official URL: http://spo.nmfs.noaa.gov/mfr553/mfr5532.pdf

Abstract

During the months of June through September in 1991 and 1992, 71 shark longlines were fished in the Chesapeake Bight region ofthe U.S. mid-Atlantic coast with a combination of rope/steel (Yankee) and monofilament gangions. A total of 288 sharks were taken on 3,666 monofilament gangions, and 352 sharks were caught on 6,975 Yankee gangions. Catch rates between gear types differed by depth strata, by month, and by species. Analyses were divided between efforts in the nursery ground ofthe sandbar shark, Carcharhinus plumbeus, in Chesapeake Bay and efforts outside the Bay. Mean catch per unit effort (CPUE) ± SE, as sharks caught per 100 hooks fished, was significantly (P<0.05) lower for Yankee gangions. Mean CPUE's for sandbar sharks in the nursery ground were 20.6 ± 3.8 for Yankee gangions and 26.0 ± 3.0 for monofilament gangions, and mean CPUE's for all species combined outside the Bay were 3.7 ± 0.7 for Yankee gangions, and 6.9 ± 1.2 for monofilament gangions.

Item Type: Article
Title: Comparisons of Shark Catch Rates on Longlines Using Rope/Steel (Yankee) and Monofilament Gangions
Personal Creator/Author:
CreatorsEmail
Branstetter, Steven
Musick, John A.
Refereed: Yes
Journal or Publication Title: Marine Fisheries Review
Volume: 55
Number: 3
Page Range: pp. 4-9
Date: 1993
ISSN: 0090-1830
Issuing Agency: United States National Marine Fisheries Service
Subjects: Fisheries
Management
Item ID: 9863
Depositing User: Patti M. Marraro
Date Deposited: 16 Aug 2012 20:42
Last Modified: 16 Aug 2012 20:42
URI: http://aquaticcommons.org/id/eprint/9863

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