Annual growth and age composition of the squat lobster Cervimunida johni off northern-central Chile (1996-97)

Authors

  • Hugo Arancibia Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas
  • Luis A. Cubillos Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas
  • Enzo Acuña Universidad Católica del Norte, Facultad de Ciencias del Mar, Departamento de Biología Marina

DOI:

https://doi.org/10.3989/scimar.2005.69n1113

Keywords:

age structure, growth, von Bertalanffy model, squat lobster, northern-central Chile

Abstract


The MULTIFAN method was used to analyse a series of monthly length-frequency distributions of the squat lobster Cervimunida johni Porter (1903) (Galatheidae), for the estimation of growth and age composition in the fishing area off Coquimbo (29°59’S-71°22’W), in the northern-central area off Chile. Length frequency data (LFD) were collected from commercial catches made between 28°S and 32°10’S from September 1996 to September 1997. MULTIFAN distinguished 11 age classes in the LFD of males and 9 age classes in the LFD of females. This is an important result because usually only three to four age classes have been reported by analysing annual length-frequency data. Males and females were recruited to the fishery at 19.7 and 18.8 mm carapace length (CL) respectively. The von Bertalanffy growth parameters were estimated as K = 0.151 yr-1 and CL?= 52.8 mm for males, and K = 0.174 yr-1 and CL?= = 45.60 mm for females. Males reached larger sizes than females, which is in agreement with the growth of other Galatheids.

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Published

2005-03-30

How to Cite

1.
Arancibia H, Cubillos LA, Acuña E. Annual growth and age composition of the squat lobster Cervimunida johni off northern-central Chile (1996-97). scimar [Internet]. 2005Mar.30 [cited 2022Dec.2];69(1):113-22. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/238

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