Proposed cut-off lengths to split recruits and adults for anchovy commercial landings
| dc.contributor.author | Cunningham, Carryn L | |
| dc.contributor.author | Butterworth, Doug S | |
| dc.date.accessioned | 2016-04-12T13:46:12Z | |
| dc.date.available | 2016-04-12T13:46:12Z | |
| dc.date.issued | 2007 | |
| dc.date.updated | 2016-04-12T13:45:20Z | |
| dc.description.abstract | In the absence of the availability of Age Length Keys for anchovy catch data, assumptions about the age composition of the anchovy catches are needed. Previous assessments and management procedures have been based upon the assumption that all anchovy caught from April to October were recruits (0-year-olds), while all anchovy caught from November to March were 1-year-olds, with 2-year-old and older fish not appearing in the catches at all. These assumptions were based upon the life-history characteristics of anchovy and general fishing patterns (De Oliveira 2003). This document considers whether a (monthly varying) cut-off length could instead be used to split the anchovy catch into juveniles and adults (1 year-olds only) for each month of the year. | |
| dc.identifier.apacitation | Cunningham, C. L., & Butterworth, D. S. (2007). <i>Proposed cut-off lengths to split recruits and adults for anchovy commercial landings</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18822 | en_ZA |
| dc.identifier.chicagocitation | Cunningham, Carryn L, and Doug S Butterworth <i>Proposed cut-off lengths to split recruits and adults for anchovy commercial landings.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2007. http://hdl.handle.net/11427/18822 | en_ZA |
| dc.identifier.citation | Cunningham, C. L., & Butterworth, D. S. (2007). Proposed cut-off lengths to split recruits and adults for anchovy commercial landings. Unpublished MCM Document MCM/2007/FEB/SWG-PEL/08. 15pp. | en_ZA |
| dc.identifier.ris | TY - Working Paper AU - Cunningham, Carryn L AU - Butterworth, Doug S AB - In the absence of the availability of Age Length Keys for anchovy catch data, assumptions about the age composition of the anchovy catches are needed. Previous assessments and management procedures have been based upon the assumption that all anchovy caught from April to October were recruits (0-year-olds), while all anchovy caught from November to March were 1-year-olds, with 2-year-old and older fish not appearing in the catches at all. These assumptions were based upon the life-history characteristics of anchovy and general fishing patterns (De Oliveira 2003). This document considers whether a (monthly varying) cut-off length could instead be used to split the anchovy catch into juveniles and adults (1 year-olds only) for each month of the year. DA - 2007 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2007 T1 - Proposed cut-off lengths to split recruits and adults for anchovy commercial landings TI - Proposed cut-off lengths to split recruits and adults for anchovy commercial landings UR - http://hdl.handle.net/11427/18822 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/18822 | |
| dc.identifier.vancouvercitation | Cunningham CL, Butterworth DS. Proposed cut-off lengths to split recruits and adults for anchovy commercial landings. 2007 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18822 | en_ZA |
| dc.language | eng | en_ZA |
| dc.publisher.department | Marine Resource Assessment and Management Group | en_ZA |
| dc.publisher.faculty | Faculty of Science | en_ZA |
| dc.publisher.institution | University of Cape Town | |
| dc.title | Proposed cut-off lengths to split recruits and adults for anchovy commercial landings | en_ZA |
| dc.type | Working Paper | en_ZA |
| uct.type.filetype | Text | |
| uct.type.filetype | Image | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Research paper | en_ZA |