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:: Volume 2, Issue 1 (3-2026) ::
Journalaer 2026, 2(1): 91-98 Back to browse issues page
Abundance and live biomass of biofouling organisms in marine cagesculture of South of Qeshm Island
Mohammad Davishi * , Mohammad Momeni , Siamak Behzadi , Shiva Aghajari Khazaei
Abstract:   (780 Views)
Introduction: The phenomenon of bio-fouling organisms on fish,s cages-culture is one of the most important problems, which causes rising the costs of the breeding. Recognizing these organisms and investigating their biomass settlement plays an important role in the proper management of fish culture in marine cages. The present research was implemented as an introduction for future studies in this regard.
Materials & Methods: The present research was conducted during autumn 2017 and winter of 2018 seasons in the southern part of Qeshm Island (Persian Gulf) and in the breeding area of Asian seabass (Lates calcarifer (Bloch, 1790)) fish cages. The diameter of the investigated cage was 28m and its height was 10 m. In order to compare the effect of depth, the cage was divided into three parts with different lateral areas. Sampling of each part was done randomly using 0.25 x 0.25 m2 fixed quadrat. Different groups were identified, counted and weighed using valid sources and identification keys at the scientific level of the phylum. The abundance and amount of biomass in each part were obtained by generalizing the quadrat area to the entire lateral surface.
​Results: In total, four phylum of arthropods, foraminifera, Annelida and mollusca were identified in the autumn. In this season, Biofoulings were Arthropods (67.9%), Foraminifera (0.7%), Annelida (0.1%) and Mollusca (31.3%). In the winter, among the three phylums identified, arthropods 72.3%, foraminifera 0.2% and molluscs with 27.5% of the total biofouling organisms. During the sampling period, arthropods were the most abundance with 70.4% and followed molluscs, foraminifera and annelids with 29.4, 0.4 and 0.1%, respectively. In the autumn, the amount of biomass of biofouling organisms was calculated to be 1954389 grams. This amount was 1712446 grams for winter.
Conclusion: The results of this review showed that there are many similarities in the phyla introduced in the sampling area with other studies in other areas. Despite the existence of this similarity, the type of phylum of biofouling organisms depend on factors such as geographical location and the duration of cage retention. The amount of biomass of biofouling organisms is significant and in order to manage cages, it is necessary to carry out more studies in future.
Keywords: Biofoulings, Fish cage culture, Biomass, Phylum, Persian Gulf (Qeshm Island)
Full-Text [PDF 868 kb]   (256 Downloads)    
Type of Study: Review | Subject: Special
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Davishi M, Momeni M, Behzadi S, Aghajari Khazaei S. Abundance and live biomass of biofouling organisms in marine cagesculture of South of Qeshm Island. , Journalaer. 2026; 2 (1) :91-98
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Volume 2, Issue 1 (3-2026) Back to browse issues page
پژوهش های محیط زیست جانوری Journal of Animal Environmental Research
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