Assessment of Macrobenthic Diversity and Density in the Gomishan Shrimp Farming Complex

Aghaei Moghaddam, Abbasali; Hoseini, seyyed Morteza; Ghelichpour, Melika; haghparast, sara; Haghpanah, Abdollah; gharavi, Behruz

Volume 16, Issue 3 (Autumn 2024) 3 2024, 16(3): 35-47 | Back to browse issues page

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Aghaei Moghaddam A, Hoseini S M, Ghelichpour M, haghparast S, Haghpanah A, gharavi B. Assessment of Macrobenthic Diversity and Density in the Gomishan Shrimp Farming Complex. 3 2024; 16 (3) :35-47
URL: http://jmb.ahvaz.iau.ir/article-1-1037-en.html

Assessment of Macrobenthic Diversity and Density in the Gomishan Shrimp Farming Complex

Abbasali Aghaei Moghaddam

, Seyyed Morteza Hoseini

Inland Waters Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research Education and Extension Organization (AREEO), Gorgan, Iran.

Abstract: (291 Views)

This research was conducted at the Gamishan shrimp site in Golestan province between June and October 2022. Three farms from Line 2 were selected, and three ponds from each farm were used as replicates to collect data on zoobenthos and total organic matter. The following zoobenthos taxa were observed: Nereis, Gammaridae, Chironomidae, Cerastoderma, Ecrobia, Theodonus, Dreissena caspia, Ephedra, and Streblospio gynobranchiata. Cerastoderma and Ecrobia were the most abundant zoobenthos taxa in the farms. Correlation analysis revealed an inverse linear relationship between zoobenthos abundance and total organic matter (r = -0.482, p < 0.05). The Simpson diversity index for zoobenthos ranged from 0.47 ± 0.03 to 0.68 ± 0.2, the Shannon diversity index ranged from 0.37 ± 0.5 to 0.91 ± 0.18, Evenness ranged from 0.66 ± 0.17 to 0.94 ± 0.12, and the Margalef richness index ranged from 0.21 ± 0.0 to 0.68 ± 0.19. This research suggests that the diversity and density of macrobenthos are not optimal, but uniformity is maintained due to the stability of the physical and chemical conditions of the water and sediment. Total organic matter increased with culture time, but did not reach critical levels. However, higher levels of organic matter negatively impacted benthos density and diversity. Therefore, more accurate estimation of feeding amounts is necessary, especially towards the end of the culture period.

Keywords: Vannamei Shrimp, Gamishan shrimp site, shrimp culture, Macrobenthoses

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Type of Study: Research | Subject: Fisheries
Received: 2024/07/27 | Accepted: 2024/10/15 | Published: 2024/10/15