Annual food consumption/biomass ratio of demersal fish resources in the Persian Gulf and Oman Sea

Authors

1 Persian Gulf and Oman Sea Ecology Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Bandar Abbas, Iran

2 Aquaculture Research Center -South of Iran, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran

3 Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

10.22092/ijfs.2024.132202

Abstract

The consumption/Biomass (Q/B) ratio and aspect ratio are basic inputs to mass-balanced trophic structures that are frequently used by ECOPATH software program. Here, we listed Q/B ratio for 154 fish species of the Persian Gulf and the Gulf of Oman to contribute to mass-balanced trophic model parametrization. Samples were collected using a research vessel bottom trawl from the Persian Gulf and the Gulf of Oman (Hormozgan province) between May and December 2017. All species were classified into six ecological groups (demersal, benthopelagic, reef-associated, pelagic-neritic, pelagic-oceanic, and bathypelagic). The aspect ratio value for all species ranged from 0.59 for Plotosus lineatus to 5.16 for Megalaspis cordyla. On the other hand, the Q/B ratio varied from 3.94 for Epinephelus coioides to 29.47 for Pentaprion longimanus. The Q/B index quantifies the proportion of food consumed within the ecosystems of the Persian Gulf and Gulf of Oman, establishing a significant correlation with fish production. It serves as a fundamental parameter in ECOPATH modeling, which is essential for sustainable fishing practices and effective fisheries management.

Keywords

Iranian Journal of Fisheries Sciences
Volume 24, Issue 1
January 2025
Pages 57-68

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