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Research Papers

A robust method for generating separate catch time-series for each of the hake species caught in the Namibian trawl fishery

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Pages 43-53 | Published online: 23 May 2012

References

  • Bohl , H , Botha , L and Van Eck , TH. 1971 . Selection of Cape hake (Merluccius merluccius capensis Castelnau and Merluccius merluccius paradoxus Franca) by bottom-trawl cod-ends . Journal du Conseil , 33 : 438 – 471 .
  • Boyer DC , Hampton I. 2001 . An overview of the living marine resources of Namibia . In: Payne AIL , Pillar SC , Crawford RJM (eds), A decade of Namibian fisheries science . South African Journal of Marine Science 23 : 5 – 35 .
  • Burmeister LM. 2001 . Depth-stratified density estimates and distribution of the Cape hake Mercluccius capensis and M. paradoxus off Namibia deduced from survey data, 1990–1999 . In: Payne AIL , Pillar SC , Crawford RJM (eds), A decade of Namibian fisheries science . South African Journal of Marine Science 23 : 347 – 356 .
  • Butterworth , DS and Rademeyer , RA. 2005 . Sustainable management initiatives for the southern African hake fisheries over recent years . Bulletin of Marine Science , 76 : 287 – 319 .
  • Chlapowski , K. 1982 . Comparison of growth rates of Cape hake (Merluccius capensis) and deep-water hake (Merluccius paradoxus) off Namibia . Acta Ichthyologica et Piscatoria , 12 : 27 – 41 .
  • Cohen , DM , Inada , T , Iwamoto , T and Scialabba , N. 1990 . FAO species catalogue, no. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fisheries Synopsis No. 125 , Vol. 10 , Rome : Food and Agriculture Organization .
  • Dobson , AJ. 2002 . An introduction to generalized linear models , 2nd edn , London : Chapman & Hall .
  • FAO . 2011 . NANSIS – Software for fishery survey data logging and analysis . In: FAO Fisheries and Aquaculture Department [online] . Rome : Food and Agriculture Organization . Available at http://www.fao.org/fishery/topic/16074/en .
  • Galvez , M and Rebolledo , H. 2005 . Estimating codend size selectivity of bottom trawlnet in Chilean hake (Merluccius gayi gayi) fishery . Investigaciones Marinas , 33 : 151 – 165 .
  • Gordoa , A and Duarte , CM. 1991 . Size-dependent spatial distribution of hake (Merluccius capensis and Merluccius paradoxus) in Namibian waters . Canadian Journal of Fisheries and Aquatic Sciences , 48 : 2095 – 2099 .
  • Gordoa , A , Lesch , H and Rodergas , S. 2006 . Bycatch: complementary information for understanding fish behaviour. Namibian Cape hake (M. capensis and M. paradoxus) as a case study . ICES Journal of Marine Science , 63 : 1513 – 1519 .
  • Gordoa , A , Macpherson , E and Olivar , MP. 1995 . “ Biology and fisheries of Namibian hakes (M. paradoxus and M. capensis) ” . In Hake: biology, fisheries and markets , Edited by: Alheit , J and Pitcher , TJ . 49 – 88 . London : Chapman & Hall . Fish and Fisheries Series 15
  • Gordoa , A , Masó , M and Voges , L. 2000 . Monthly variability of Namibian hake and its relationship with environmental seasonality . Fisheries Research , 48 : 185 – 195 .
  • Hamukuaya H , O'Toole MJ , Woodhead PMJ 1998 . Observations of severe hypoxia and offshore displacement of Cape hake over the Namibian shelf in 1994 . In: Pillar SC , Moloney CL , Payne AIL , Shillington FA (eds), Benguela dynamics: impacts of variability on shelf-sea environment and their living resources . South African Journal of Marine Science 19 : 57 – 59 .
  • Hjellvik , V , Godø , OR and Tjøstheim , D. 2002 . The measurement error in marine survey catches: the bottom trawl case . Fishery Bulletin , 100 : 720 – 726 .
  • Hjellvik , V , Michalsen , K , Aglen , A and Nakken , O. 2003 . An attempt at esti-mating the effective fishing height of the bottom trawl using acoustic survey recordings . ICES Journal of Marine Science , 60 : 967 – 979 .
  • Huse I , Iilende T , Strømme T. 2001 . Towards a catchability constant for trawl surveys of Namibian hake . In: Payne AIL , Pillar SC , Crawford RJM (eds), A decade of Namibian fisheries science . South African Journal of Marine Science 23 : 375 – 383 .
  • Huse I , Hamukuaya H , Boyer DC , Malan PE , Strømme T. 1998 . The diurnal vertical dynamics of the Cape hake and their potential prey . In: Pillar SC , Moloney CL , Payne AIL , Shillington FA (eds), Benguela dynamics: impacts of variability on shelf-sea environment and their living resources . South African Journal of Marine Science 19 : 365 – 376 .
  • Iilende T , Strømme T , Johnsen E. 2001 . Dynamics of the pelagic component of Namibian hake stocks . In: Payne AIL , Pillar SC , Crawford RJM (eds), A decade of Namibian fisheries science . South African Journal of Marine Science 23 : 337 – 346 .
  • Johnsen , E. 2003 . Improved precision of the length frequency distribution estimates from trawl survey by including spatial covariance using Namibian Merluccius capensis as an example . Fisheries Research , 62 : 7 – 20 .
  • Johnsen , E and Iilende , T. 2007 . Factors affecting the diel variations in commercial CPUE of Namibian hake – can new information improve standard survey estimates? . ICES Journal of Marine Science , 64 : 1202 – 1209 .
  • Jørgensen , T , Engås , A , Johnsen , E , Iilende , T , Kainge , P and Schneider , P. 2007 . Escapement of Cape hakes under the fishing line of the Namibian demersal sampling trawl . African Journal of Marine Science , 29 : 209 – 221 .
  • Jørgensen , T , Ingolfsson , OA , Graham , N and Isaksen , B. 2006 . Size selection of cod by rigid grids – is anything gaining compared to diamond mesh codends only? . Fisheries Research , 79 : 337 – 348 .
  • Kainge , P , Kjesbu , OS , Thorsen , A. and Salvanes , AGV. 2007 . Merluccius capensis spawn in Namibian waters, but do M. paradoxus? . African Journal of Marine Science , 29 : 379 – 392 .
  • Lloris , D , Matallanas , J and Oliver , P. 2005 . Hakes of the world (Family Merlucciidae). An annotated and illustrated catalogue of hake species known to date. FAO species catalogue for fishery purposes No. 2 , Rome : Food and Agriculture Organization .
  • Payne AIL , Punt AE. 1995 . Biology and fisheries of South African Cape hake, M. capensis and M. paradoxus . In: Alheit J , Pitcher TJ (eds), Hake: fisheries, ecology and markets . Fish and Fisheries Series 15 . London : Chapman and Hall . pp 15 – 44 .
  • Republic of Namibia . 2007 . National plan of action for the management of fishing capacity . Available at ftp://ftp.fao.org/FI/DOCUMENT/IPOAS/national/namibia/NPOACapacity2007.pdf [accessed 7 July 2011] .
  • R Development Core Team . 2008 . R: A language and environment for statistical computing . Vienna : R Foundation for Statistical Computing .
  • Strømme T , Iilende T. 2001 . Precision in systematic trawl surveys as assessed from replicate sampling by parallel trawling off Namibia . In: Payne AIL , Pillar SC , Crawford RJM (eds), A decade of Namibian fisheries science . South African Journal of Marine Science 23 : 385 – 396 .
  • Venables , WN and Ripley , BD. 2004 . Modern applied statistics with S , 4th edn , New York : Springer-Verlag .
  • Voges , E , Gordoa , A , Bartholomae , CH and Field , JG. 2002 . Estimating the probability of different levels of recruitment for Cape hakes Merluccius capensis off Namibia, using environmental indices . Fisheries Research , 58 : 333 – 340 .

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