Home           Contact us           FAQs           
 
   Journal Page   |   Aims & Scope   |   Author Guideline   |   Editorial Board   |   Search
    Abstract
2013 (Vol. 2, Issue: 1)
Article Information:

Stock Assessment of the Blue Swimmer Crab Portunus pelagicus (Linnaeus, 1766) from the Oman Coastal Waters

Sahar F. Mehanna, Sergey Khvorov, Mansoor Al-Sinawy, Yehia S. Al-Nadabi and Mohamed N. Al-Mosharafi
Corresponding Author:  Sahar F. Mehanna 

Key words:  Arabian sea, Oman sea, population dynamics, portunidae, Portunus pelagicus, rational exploitation, stock assessment
Vol. 2 , (1): 1-8
Submitted Accepted Published
June 22, 2012 July 28, 2012 February 20, 2013
Abstract:

The stock assessment of the blue swimmer crab, Portunus pelagicus was made based on monthly length frequency data collected from four landing sites along the Oman coasts on both Arabian and Oman Seas from January, 2011 to May, 2012. Age and growth have been estimated from the length-frequency distribution of up to 1000 specimens. Age composition was determined using Bhattacharya's method and the results showed that the maximum life span of P. pelagicus was about 15 months. Bertalanffy (1938) growth parameters didn’t differ significantly between sexes and the obtained values of K were K = 1.85, 1.68 and 1.68 y-1 and CLĄ values were 102.83, 109.57 and 108.46 mm for male, female and sexes combined, respectively. The values of total mortality coefficient (Z), natural mortality coefficient (M) and fishing mortality coefficient (F) were 7.85, 3.15 and 4.7 y-1. The yield per recruit and SSB analysis showed that the crab stock is being exploited beyond its maximum biological limit, but the increasing of fishing mortality to the level which gives the maximum Y/R (83% of its current value) will accompanied with a negligible increase in Y/R (2.7%) and a considerable decrease in both biomass per recruit (21.1%) and spawning stock biomass (37.6%).
Abstract PDF HTML
  Cite this Reference:
Sahar F. Mehanna, Sergey Khvorov, Mansoor Al-Sinawy, Yehia S. Al-Nadabi and Mohamed N. Al-Mosharafi, 2013. Stock Assessment of the Blue Swimmer Crab Portunus pelagicus (Linnaeus, 1766) from the Oman Coastal Waters.  International Journal of Fisheries and Aquatic Sciences, 2(1): 1-8.
    Advertise with us
 
ISSN (Online):  2049-842X
ISSN (Print):   2049-8411
Submit Manuscript
   Current Information
   Sales & Services
   Contact Information
  Executive Managing Editor
  Email: admin@maxwellsci.com
  Publishing Editor
  Email: support@maxwellsci.com
  Account Manager
  Email: faisalm@maxwellsci.com
  Journal Editor
  Email: admin@maxwellsci.com
  Press Department
  Email: press@maxwellsci.com
Home  |  Contact us  |  About us  |  Privacy Policy
Copyright © 2009. MAXWELL Science Publication, a division of MAXWELLl Scientific Organization. All rights reserved