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Investigating the density and biodiversity of the Decapods of intertidal zone in Bushehr city coastal area in the cold and hot seasons
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Yaghoob Parsa *   , Bita Archangi , Ahmad Savari , Babak Dustshenas , Amir Vazirizadeh |
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Abstract: (512 Views) |
Introduction: Decapods is one of the most important commercial and valuable groups in aquatic ecosystems.
Materials & Methods: The purpose of this study is to investigate the community structure of the Decapods of the intertidal area of the rocky, muddy and sandy beaches of Bushehr from three stations in two warm seasons (August 2021) and cold season (February 2021), sampling in the form of Random sampling was done using a 50×50 cm square as a sampling unit. After catching and collecting the samples in each quadrat, they were transferred to plastic containers with lids for sampling, and then by pouring 4% formalin into the containers, the samples were fixed.
Results: In total, 41 species of decapods belonging to 12 families and two orders of true crabs and non-true crabs were identified, and Petrolisthes leptocheles species is known as the most abundant species. Pacheles natalensis, Clibanarius syngnathus and Uca inversa after Petrolisthes leptocheles were observed with high density in both cold and warm seasons. During sampling, in general, the density was higher in the cold season than in the warm season. Also, in this research, Shannon and Simpson's ecological indices were used to calculate the diversity and distribution of the Decapods of the study area based on the relationship between the total number of species and the total number of individuals constituting the species, which Shannon's ecological indices and Simpson were evaluated on average as 2.09 and 0.14 respectively. The results of Tukey's one-way variance analysis between the Shannon index and the stations in both cold and warm seasons showed a significant difference between all the stations with the highest index at the 0.001 level.
Conclusion: the results show the stability and low stress of the investigated beaches, and the distribution and abundance of species were seen almost uniformly in all the beaches. Station No. 1 (Oil Tanker) has a higher diversity and density of species compared to other stations due to the high Shannon index and the presence of various types of beaches. |
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| Keywords: True crabs, Intertidal zone, Persian Gulf, Unreal crabs, Diversity index |
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Full-Text [PDF 847 kb]
(188 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2026/02/17 | Accepted: 2026/01/30 | Published: 2026/06/5
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