Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?

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dc.contributor.advisorBranch, George Men_ZA
dc.contributor.advisorGroeneveld, Johan Conraden_ZA
dc.contributor.advisorKirkman, S Pen_ZA
dc.contributor.authorBoucher, Moniqueen_ZA
dc.date.accessioned2014-09-15T07:34:47Z
dc.date.available2014-09-15T07:34:47Z
dc.date.issued2007en_ZA
dc.descriptionIncludes bibliographical references (leaves 35-40)en_ZA
dc.description.abstractAn experimental trap fishery for the deep-water lobster spiny lobster Palinurus delagoae commenced in 2004, and was run until 2006. Data collected by on-board scientific observers were used to explore fishing effort, catches and catch per unit effort. The recent data were compared with those for a previous experiment conducted in 1994-1997, which apparently contributed to the collapse of the stock, to determine whether the stock had recovered and could sustain a trap fishery. There was a demonstrable recovery of the P. delagoae stock after the previous stock collapse, according to the catch rates and the size composition of catches between 2004-2006. However, catches of P. delagoae declined between 2004-2006. This was related to decreases in effort and in catch per unit effort over the three years. This, and a simultaneous decline in the by-catch of P. delagoae in the prawn trawl fishery off KwaZulu-Natal, suggests that the P. delagoae stock is extremely vulnerable to concomitant trawl and trap fishing. It is recommended that trap fishing should either be permitted at low levels of effort and catch only, or once more be suspended to allow the resource to recover.en_ZA
dc.identifier.apacitationBoucher, M. (2007). <i>Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/7488en_ZA
dc.identifier.chicagocitationBoucher, Monique. <i>"Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 2007. http://hdl.handle.net/11427/7488en_ZA
dc.identifier.citationBoucher, M. 2007. Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Boucher, Monique AB - An experimental trap fishery for the deep-water lobster spiny lobster Palinurus delagoae commenced in 2004, and was run until 2006. Data collected by on-board scientific observers were used to explore fishing effort, catches and catch per unit effort. The recent data were compared with those for a previous experiment conducted in 1994-1997, which apparently contributed to the collapse of the stock, to determine whether the stock had recovered and could sustain a trap fishery. There was a demonstrable recovery of the P. delagoae stock after the previous stock collapse, according to the catch rates and the size composition of catches between 2004-2006. However, catches of P. delagoae declined between 2004-2006. This was related to decreases in effort and in catch per unit effort over the three years. This, and a simultaneous decline in the by-catch of P. delagoae in the prawn trawl fishery off KwaZulu-Natal, suggests that the P. delagoae stock is extremely vulnerable to concomitant trawl and trap fishing. It is recommended that trap fishing should either be permitted at low levels of effort and catch only, or once more be suspended to allow the resource to recover. DA - 2007 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2007 T1 - Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered? TI - Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered? UR - http://hdl.handle.net/11427/7488 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/7488
dc.identifier.vancouvercitationBoucher M. Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 2007 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/7488en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherApplied Marine Scienceen_ZA
dc.titlePotential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?en_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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