Some Biological Aspects and Stock Status of Goldlined Seabream <i>Rhabdosargus sarba</i> (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates

Elsayed Farrag; Ahmed Alzaby; Carter Subbiah

doi:doi:10.11648/j.cbb.20170504.11

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Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates

Elsayed Farrag, Ahmed Alzaby, Carter Subbiah

Published in Computational Biology and Bioinformatics (Volume 5, Issue 4)

Received: 26 December 2016 Accepted: 6 January 2017 Published: 1 November 2017

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Abstract

Evaluation of Rhabdosargus sarba caught from South Arabian Gulf of the United Arab Emirates was investigated using a combination of size frequency and biological data. Forked length ranged between 14.0 and 39.0cm. Length-weight relationship for combined sexes of R. sarba was estimated as W=0.0338*L^2.7807. The spawning season of R. sarba was over a limit time period from November to February and the peaks were in January and February for males and females respectively. The overall sex ratio throughout the study period was 1:1.4 males to females, which was not significantly different from 1:1. The size and age at 50% sexual maturity was 22.01cm FL and 2.39years. The FiSAT II software was used to perform the estimate of growth, mortality and exploitation rate. Parameter values of asymptotic length L∞ and growth coefficient K were 41.94cm FL and 0.25y^-1 respectively. Age at length zero to was estimated by substituting the asymptotic length and growth coefficient in Pauly’s equation. Instantaneous rate of total and natural mortalities were estimated as 1.09, 0.66 y^-1 respectively. The length at first capture was obtained as 19.51cm that was smaller than the length at first sexual maturity. The rate of fishing mortality (F=0.43y^-1) is higher than the optimum level (F_opt =0.33y^-1) and was close to limit (F_limit =0.44yr^-1) biological reference point, indicated that the resource is slightly over-exploited. Results also indicated that the reduction of current level of fishing mortality to optimum level will lead to reduction of exploitation rate by 23.08%.

Published in	Computational Biology and Bioinformatics (Volume 5, Issue 4)
DOI	10.11648/j.cbb.20170504.11
Page(s)	43-49
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Biological Aspects, Stock Status, Rhabdosargus Sarba, Mortality Rate, Arabian Gulf

References

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APA Style

Elsayed Farrag, Ahmed Alzaby, Carter Subbiah. (2017). Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates. Computational Biology and Bioinformatics, 5(4), 43-49. https://doi.org/10.11648/j.cbb.20170504.11

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ACS Style

Elsayed Farrag; Ahmed Alzaby; Carter Subbiah. Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates. Comput. Biol. Bioinform. 2017, 5(4), 43-49. doi: 10.11648/j.cbb.20170504.11

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AMA Style

Elsayed Farrag, Ahmed Alzaby, Carter Subbiah. Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates. Comput Biol Bioinform. 2017;5(4):43-49. doi: 10.11648/j.cbb.20170504.11

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@article{10.11648/j.cbb.20170504.11,
  author = {Elsayed Farrag and Ahmed Alzaby and Carter Subbiah},
  title = {Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates},
  journal = {Computational Biology and Bioinformatics},
  volume = {5},
  number = {4},
  pages = {43-49},
  doi = {10.11648/j.cbb.20170504.11},
  url = {https://doi.org/10.11648/j.cbb.20170504.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.cbb.20170504.11},
  abstract = {Evaluation of Rhabdosargus sarba caught from South Arabian Gulf of the United Arab Emirates was investigated using a combination of size frequency and biological data. Forked length ranged between 14.0 and 39.0cm. Length-weight relationship for combined sexes of R. sarba was estimated as W=0.0338*L2.7807. The spawning season of R. sarba was over a limit time period from November to February and the peaks were in January and February for males and females respectively. The overall sex ratio throughout the study period was 1:1.4 males to females, which was not significantly different from 1:1. The size and age at 50% sexual maturity was 22.01cm FL and 2.39years. The FiSAT II software was used to perform the estimate of growth, mortality and exploitation rate. Parameter values of asymptotic length L∞ and growth coefficient K were 41.94cm FL and 0.25y-1 respectively. Age at length zero to was estimated by substituting the asymptotic length and growth coefficient in Pauly’s equation. Instantaneous rate of total and natural mortalities were estimated as 1.09, 0.66 y-1 respectively. The length at first capture was obtained as 19.51cm that was smaller than the length at first sexual maturity. The rate of fishing mortality (F=0.43y-1) is higher than the optimum level (Fopt =0.33y-1) and was close to limit (Flimit =0.44yr-1) biological reference point, indicated that the resource is slightly over-exploited. Results also indicated that the reduction of current level of fishing mortality to optimum level will lead to reduction of exploitation rate by 23.08%.},
 year = {2017}
}

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TY - JOUR
T1 - Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates
AU - Elsayed Farrag
AU - Ahmed Alzaby
AU - Carter Subbiah
Y1 - 2017/11/01
PY - 2017
N1 - https://doi.org/10.11648/j.cbb.20170504.11
DO - 10.11648/j.cbb.20170504.11
T2 - Computational Biology and Bioinformatics
JF - Computational Biology and Bioinformatics
JO - Computational Biology and Bioinformatics
SP - 43
EP - 49
PB - Science Publishing Group
SN - 2330-8281
UR - https://doi.org/10.11648/j.cbb.20170504.11
AB - Evaluation of Rhabdosargus sarba caught from South Arabian Gulf of the United Arab Emirates was investigated using a combination of size frequency and biological data. Forked length ranged between 14.0 and 39.0cm. Length-weight relationship for combined sexes of R. sarba was estimated as W=0.0338*L2.7807. The spawning season of R. sarba was over a limit time period from November to February and the peaks were in January and February for males and females respectively. The overall sex ratio throughout the study period was 1:1.4 males to females, which was not significantly different from 1:1. The size and age at 50% sexual maturity was 22.01cm FL and 2.39years. The FiSAT II software was used to perform the estimate of growth, mortality and exploitation rate. Parameter values of asymptotic length L∞ and growth coefficient K were 41.94cm FL and 0.25y-1 respectively. Age at length zero to was estimated by substituting the asymptotic length and growth coefficient in Pauly’s equation. Instantaneous rate of total and natural mortalities were estimated as 1.09, 0.66 y-1 respectively. The length at first capture was obtained as 19.51cm that was smaller than the length at first sexual maturity. The rate of fishing mortality (F=0.43y-1) is higher than the optimum level (Fopt =0.33y-1) and was close to limit (Flimit =0.44yr-1) biological reference point, indicated that the resource is slightly over-exploited. Results also indicated that the reduction of current level of fishing mortality to optimum level will lead to reduction of exploitation rate by 23.08%.
VL - 5
IS - 4
ER -

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Author Information

Elsayed Farrag

Marine Environment Research Department, Ministry of Climate Change and Environment (MOCCaE), Dubai, United Arab Emirates
Ahmed Alzaby

Marine Environment Research Department, Ministry of Climate Change and Environment (MOCCaE), Dubai, United Arab Emirates
Carter Subbiah

Marine Environment Research Department, Ministry of Climate Change and Environment (MOCCaE), Dubai, United Arab Emirates

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APA Style

Elsayed Farrag, Ahmed Alzaby, Carter Subbiah. (2017). Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates. Computational Biology and Bioinformatics, 5(4), 43-49. https://doi.org/10.11648/j.cbb.20170504.11

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ACS Style

Elsayed Farrag; Ahmed Alzaby; Carter Subbiah. Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates. Comput. Biol. Bioinform. 2017, 5(4), 43-49. doi: 10.11648/j.cbb.20170504.11

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AMA Style

Elsayed Farrag, Ahmed Alzaby, Carter Subbiah. Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates. Comput Biol Bioinform. 2017;5(4):43-49. doi: 10.11648/j.cbb.20170504.11

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@article{10.11648/j.cbb.20170504.11,
  author = {Elsayed Farrag and Ahmed Alzaby and Carter Subbiah},
  title = {Some Biological Aspects and Stock Status of Goldlined Seabream Rhabdosargus sarba (Forsskål, 1775) from the Arabian Gulf of the United Arab Emirates},
  journal = {Computational Biology and Bioinformatics},
  volume = {5},
  number = {4},
  pages = {43-49},
  doi = {10.11648/j.cbb.20170504.11},
  url = {https://doi.org/10.11648/j.cbb.20170504.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.cbb.20170504.11},
  abstract = {Evaluation of Rhabdosargus sarba caught from South Arabian Gulf of the United Arab Emirates was investigated using a combination of size frequency and biological data. Forked length ranged between 14.0 and 39.0cm. Length-weight relationship for combined sexes of R. sarba was estimated as W=0.0338*L2.7807. The spawning season of R. sarba was over a limit time period from November to February and the peaks were in January and February for males and females respectively. The overall sex ratio throughout the study period was 1:1.4 males to females, which was not significantly different from 1:1. The size and age at 50% sexual maturity was 22.01cm FL and 2.39years. The FiSAT II software was used to perform the estimate of growth, mortality and exploitation rate. Parameter values of asymptotic length L∞ and growth coefficient K were 41.94cm FL and 0.25y-1 respectively. Age at length zero to was estimated by substituting the asymptotic length and growth coefficient in Pauly’s equation. Instantaneous rate of total and natural mortalities were estimated as 1.09, 0.66 y-1 respectively. The length at first capture was obtained as 19.51cm that was smaller than the length at first sexual maturity. The rate of fishing mortality (F=0.43y-1) is higher than the optimum level (Fopt =0.33y-1) and was close to limit (Flimit =0.44yr-1) biological reference point, indicated that the resource is slightly over-exploited. Results also indicated that the reduction of current level of fishing mortality to optimum level will lead to reduction of exploitation rate by 23.08%.},
 year = {2017}
}

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