Seasonal occurrence and abundance of molluscan fauna at rocky area of Ras Juddi, Makran coast - northern Arabian Sea
Baloch, A.; Ali, Q.M.; Ahmed, Q.; Mubarak, S.; Bat, L. (2025). Seasonal occurrence and abundance of molluscan fauna at rocky area of Ras Juddi, Makran coast - northern Arabian Sea. Journal of Materials and Environmental Science 16(8): 1550-1565
In: Journal of Materials and Environmental Science. University of Mohammed Premier Oujda: Morocco. ISSN 2028-2508; e-ISSN 2737-890X, more
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| Keywords |
Biodiversity
Temporal variations > Periodic variations > Seasonal variations
Anachis terpsichore (G. B. Sowerby I, 1822) [WoRMS]; Barbatia obliquata (W. Wood, 1828) [WoRMS]; Perna viridis (Linnaeus, 1758) [WoRMS]
Pakistan [Marine Regions]
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| Author keywords |
Intertidal zone; Species richness
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| Authors | | Top |
- Baloch, A.
- Ali, Q.M.
- Ahmed, Q.
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- Mubarak, S.
- Bat, L., more
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| Abstract |
Molluscan species diversity and abundance were investigated using quadrat and random sampling methods on the rocky shore of Ras Juddi (25°13'25" N, 63°30'15" E), Pasni, along the Makran coast, from December 2021 to October 2022. A total of 69 molluscan species belonging to 38 families were recorded during the study. The identified species comprised 46 Gastropoda (57%), 15 Bivalvia (41%), 4 Polyplacophora (1%), 3 Cephalopoda (1%), and 1 Scaphopoda (≤1%), representing the first comprehensive report on the intertidal zone of Ras Juddi, Makran coast. The highest number of individuals was observed during the Inter-Monsoonal month of April (n=282), followed by the North-East Monsoon (December and January) (n=262) and the Inter-Monsoon period in October (n=242). The lowest abundance was recorded during the South-West Monsoon in August (n=102). Among the identified species, Barbatia obliquata (n=219), Anachis terpsichore (n=144), and Perna viridis (n=90) exhibited the highest abundance. A specimen of chiton (Polyplacophora) belonging to the genus Leptoplax sp. was collected, which is potentially a new record for Pakistan and will be confirmed through further detailed taxonomic investigation. This research presents the first comprehensive report on the diversity and abundance of molluscan species in the studied area. |
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