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On types of sexual maturity in Brachyurans, with special reference to size at the onset of sexual maturity
Waiho, K.; Fazhan, H.; Baylon, J.C.; Madihah, H.; Noorbaiduri, S.; Ma, H.; Ikhwanuddin, M. (2017). On types of sexual maturity in Brachyurans, with special reference to size at the onset of sexual maturity. J. Shellfish Res. 36(3): 807-839. https://hdl.handle.net/10.2983/035.036.0330
In: Journal of Shellfish Research. National Shellfisheries Association: Duxbury. ISSN 0730-8000, more
Peer reviewed article  

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Keyword
    Maturation
Author keywords
    crab; brachyuran; morphometric maturity; physiological maturity; functional maturity

Authors  Top 
  • Waiho, K.
  • Fazhan, H.
  • Baylon, J.C.
  • Madihah, H.
  • Noorbaiduri, S.
  • Ma, H.
  • Ikhwanuddin, M.

Abstract
    Sexual maturity is an important phase of brachyuran's life cycle as it marks the transition of becoming an adult and the ability to reproduce. This article discussed on the types of sexual maturity found in brachyurans and the implication and application of size at the onset of sexual maturity (SOM) in general. In addition, data on the estimates of SOM of brachyurans were collected on a global scale for the period 1971–2015. The 220 maturity data were representative of 133 brachyuran stocks from 23 families and 55 species. The effect of sampling methods and indicators used for the estimation of SOM were highlighted as well. Variation in the carapace width at which 50% of the population reaches maturity (CW50) was apparent between families, species, sexes, and populations within the same species, in addition to latitudinal and temporal variation. The CW50 was in a positive linear relationship with the maximum size (CWmax) for males (logCW50 = -0.28 + 1.01logCWmax; R2 = 0.85, P < 0.001), females (logCW50 = -0.35 + 1.08logCWmax; R2 = 0.96, P < 0.001), and specifically Portunidae (logCW50 =-0.88 + 1.32logCWmax; R2 = 0.69, P < 0.001). The size at maturity data in this review serve as guidelines for stock assessment and sustainable population management of brachyuran species.

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