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  • Pinctada radiata  (3)
Collection
Years
  • 1
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    Unknown
    In:  http://aquaticcommons.org/id/eprint/23656 | 18721 | 2018-07-15 00:23:26 | 23656 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-14
    Description: Investigation on pearl oyster, Pinctada radiata growth and mortality parameters was carried out from September 2001 to October 2002 in west of Lavan Island using scuba diving method. Hinge length (HL) and dorsoventral measurement (DVM) relationship was significantly (r ^ (2) =0.98) linear. Weight and dorsoventral measurement relationship was shown to be W=0.0004 L ^ (2.812) (r ^ (2) =0.98). Asymptotic length (L infinity) and growth rate (K) were estimated at 98 (mm) and 0.96 y ^ (-1) respectively. More than 70 percent of the individuals were matured in April 2001. Mortality parameters including natural mortality (M), total mortality (Z) and fishery mortality (F) were estimated to be 1.21y ^ (-1), 1.68y ^ (-1) and 0.66y ^ (-1) respectively. Exploitation rate was estimated to be 0.27 in this survey.
    Keywords: Biology ; Length-weight relationships ; Growth rate ; Mortality ; Growth ; Exploitation ; Population dynamics ; Marine ; Pearl oysters ; Pinctada radiata ; Lavan Island ; ISW ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-10
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  • 2
    Publication Date: 2021-05-19
    Description: Investigation on pearl oyster, Pinctada radiate growth and mortality parameters was carried out from September 2001 to October 2002 in west of Lavan Island using scuba diving method. Hinge length (HL) and Dorso-ventral measurement (DVM) relationship was significantly (r super(2)=0.98) linear. Weight and dorso-ventral measurement relationship was shown to be W=0.0004 L super(2.812)(r super(2)=0.98). Asymptotic length (L infinity ) and growth rate (K) were estimated at 98 (mm) and 0.96 y super(-1) respectively. More than 70 percent of the individuals were matured in April 2001. Mortality parameters including natural mortality (M), total mortality (Z) and fishery mortality (F) were estimated to be 1.21y super(-1), 1.68y super(-1) and 0.66y super(-1) respectively. Exploita-tion rate was estimated to be 0.27 in this survey.
    Description: Published
    Keywords: Pearl oysters ; Pinctada radiata ; Length-weight relationships ; Growth rate ; Mortality ; Growth ; Exploitation ; Population dynamics ; Marine
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-10
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  • 3
    Publication Date: 2021-05-19
    Description: As pearling has been banned in Iran since 2006, stocks of pearl oysters has not been investigated during these years; therefore, condition of natural habitats for Pinctada radiata in its old habitats was surveyed in present research. Shallow waters around Hendorabi Island were searched with diving and two habitats namely “Sooleh” and “Sahel-e-sheni”, were considered for study. The pearl oysters had most distribution in these habitats in depth ranges of 7 to 12 m and 8 to 11 m, respectively. Total stock in Sooleh and Sahel-e-sheni was surveyed near 35700 and 12563 Pinctada radiata, respectively, of which 22% and 67% were catchable, respectively. Catch Per Unit of Area (CPUA) in Sooleh and Sahel-e-sheni habitats was estimated equal to 0.3 N/m2 in both habitats, and Catch Per Unit of Effort (CPUE) in these habitats was calculated equal to 59.5 N/hr and 50.3 N/hr, respectively. Results of this study demonstrated that area, stocks and CPUA for studied habitats were less than previous years. Despite of interdict of pearling in this region since 7 years ago, stock revival has done slowly.
    Description: Published
    Keywords: Pinctada radiata ; Pearl Oyster ; Mohar Pearl Oyster Pinctada radiata ; Density ; Length ; Length scale ; Density index
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.137-146
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