Role of Environmental Factors on Gastropod Assemblages at Govater Bay- Sistan and Baluchestan Province

Document Type : Biodiversity

Authors

1 Department of Environment, Faculty of Natural Resources, University of Tehran, Karaj, Iran

2 Department of Environmental Sciences, Faculty of Natural Resources, University of Zabol, Zabol, Iran

Abstract

Gastropods have an important role in mangrove forest food web. This study was performed with the aim of ‎studying the gastropod assemblages in different seasons, tidal regions and distance from fishery harbor at Govater ‎Bay- Sistan and Baluchestan Province. Gastropods sampling was done in three transects perpendicular to shore line ‎extended to mangrove forests in three repetitions at the water adjacent, middle and land adjacent points. Separating ‎different intertidal regions, seasons and distance to fishing harbor was done by the one- way ANOSIM. The ‎SIMPER test was also done to define in which what species had more participation in similarity or dissimilarity of ‎gastropod assemblages in different regions or seasons. The ANOSIM results showed that gastropod assemblage in ‎different intertidal zones had significant difference (P<0.01). Gastropod assemblages in the water adjacent points ‎were different than land adjacent and middle points. This analysis didn’t show any significant different between ‎seasons and different distances from fishing harbor; therefore, it can be interpreted that in this region season ‎doesn’t effect on gastropod assemblages and low human interference in fishing harbor effluent hasn’t changed ‎gastropod assemblages. The SIMPER result show that Asseminea sp1 and Asseminea sp2 had more role in sepration ‎of two intertidal regions regarding to gastropod assemblages respectively with the average of 13.19 percent and ‎‎13.09 percent dissimilarity from 62.53 percent of the mean total dissimilarity‎.

Keywords

References

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Journal of Animal Environment
Volume 10, Issue 3
October 2018
Pages 457-462

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