Estimation of the exploitable biomass and the reference biological point, F0.1, of bogue Boops boops L., in the bay of Bou-Ismail, centre Algerian
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 2
Abstract
A study of age and growth of Mediterranean bogue ; Boops boops (Linneaus, 1758) from Algerian Mediterranean bay of Bou-Ismail was carried out during the period from Februaries 2013 to January 2014. Five age groups could be separated by Bhattacharya’s method from length frequency data. Mean length by the end of each year of life (cm) of B. boops from the study area were found to be 13.87, 17.13, 21.49, 24.78, and 27.44 cm for age groups from I to V respectively. The estimated von Bertalanffy growth parameters were L∞= 29.66 cm, K= 0.33 year-1 and t0= 0, W∞=209.79 g .The length-weight relationship was W = 0.016 L2.798. Total mortality (Z), natural mortality (M) and fishing mortality (F) were 1.02, 0.36 and 0.66 year-1 respectively the. VIT software (Lleonart and Salat, 2000) was used to determine biomass, virtual population analysis (VPA), and yield or productivity per recruit. The exploitable biomass of the bogue was estimated at 278.87 tons by the V.P.A. The yield per actual recruit (Y/R = 24.864 g) is very close to the MSY or Ymax /R (25.092 g). This result indicates that the bogue stock is in a state of full exploitation. The biomass per actual recruit (B/R = 55.863 g), which refers to the mean annual biomass of survivors as a function of fishing mortality, is higher than the maximum sustainable biomass (Bmax /R = 48.606 g). Given the state of full exploitation of the bogue stock, an adjustment of the ratio Yactual /R is recommended. To do this, fishing effort is set at F0.1, and the values obtained for Y0.1/R and B0.1/R then correspond to 22.799 g and 80.18 g, respectively.
Authors and Affiliations
Benina Rachid, Salim Mouffok, Zitouni Boutiba
Keywords
Related Articles
- EP ID EP37886
- DOI -
- Views 140
- Downloads 0
Morphological Variations of Epaulette Soldierfish, Myripristis kuntee in Tuka Bay, Kiamba, Sarangani Province
Kiamba, Sarangani Province is one of the tourist spots in Mindanao because of its bountiful marine resources which contribute to the economic aspects of the place. Because of the indisputable abundance of its marine re...
Effect of application elements, water stress and variety on nutrients of grain wheat in Zahak region, Iran
Wheat (Triticum aestivum L.) is one of the main cereal crops in the world together with maize and rice. Drought stress is the most important limiting factor of field crops in Iran. Most parts of Iran’s cultivation land...
Effect of different suckericides on yield of fcv tobacco speight G-28
To study the effect of different suckericides on the yield of FCV tobacco Speight G-28, an experiment was conducted using randomized complete block (RCB) design with three replications at Tobacco Research Station, Khan G...
Assessment the results of QSPM in opportunities strength for electronically waste of environmental management by SWOT method in Pira Iranian drilling company
Electronic and electrical equipment production growth and development along with their short life has led to production of enormous amount of electronic and electrical waste. The aim of the current research is to evalua...
Microorganism’s application strategy for bio-phytoremediation of heavy metal: A review
Phytoremediation is a group of technologies that use plants to reduce, remove, de- grade, or immobilize environmental toxins, primarily those of anthropogenic origin, with the aim of restoring area sites to a condition...