Diversity of Mollusca (Gastropoda) along Intertidal Rocky Shores of Thiruvananthapuram District, Kerala Coast

Authors

  • Preetha Karnaver
     Department of Zoology, Christian College, Chengannur, Alappuzha 689122, Kerala
  • Ajin Madhavan
     Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Cochin – 682016, Kerala
  • Ravinesh R .
     Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, Atal Bhavan, LNG Road, Puthuvypu, Ochanthuruthu P.O, Kochi-682508
  • Reshmi R.
     Department of Zoology, NSS College, Pandalam, Pathanamthitta 689501, Kerala
  • Biju Kumar A.
     Department of Aquatic Biology & Fisheries, University of Kerala, Thiruvananthapuram 695581, Kerala
  • Hari Kumar B.
     KNM NSS ayurveda hospital, Vallamkulam, Pathanamthitta, Kerala

DOI:

https://doi.org/10.26515/rzsi/v123/i2S/2023/172530

Keywords:

Biodiversity, Mollusca, Gastropoda, Intertidal rocky, species

Abstract

An assessment of intertidal rocky shore biodiversity of gastropods along Mulloor, Kovalam and Vizhinjam sites of Thiruvananthapuram district Kerala coast is done during three different seasons during 2020- 2022, and identified 108 species across 6 subclasses, 9 orders, 20 super families, 27 families and 61 genera. Neogastropoda was the most species- rich order (50 species) followed by orders Littoriimorpha (30 species), Trochida (7 species), Cycloneritida (7 species), Lepettellida (5 species), Patellogastropoa (2 species), Cephalaspidea (2 species) and Seguenziida (1 species). Family Muricidae was having maximum species diversity (18 species) followed by family Conidae (17 species). Among the 108 species observed in the study, 50 were commonly occurring, whereas 22 were uncommon and 36 were rare. Littorara undulata was the most abundant species observed during the study. A site - wise comparison of the three study sites revealed that Vizhinjam (84 species) was having maximum species diversity followed by Mulloor (82 species) and Kovalam (61 species). An assessment of diversity indices such as Shannon-Wiener index (H) Simpson Dominance Index (D), Evenness index (E) gave significant values indicating very high diversity of gastropods along the study sites. The present study provides information on the gastropod resources of the selected study area, which forms the baseline data for future ecological studies.

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Published

2023-07-01

How to Cite

Karnaver, P., Madhavan, A., R ., R., R., R., A., B. K., & B., H. K. (2023). Diversity of Mollusca (Gastropoda) along Intertidal Rocky Shores of Thiruvananthapuram District, Kerala Coast. Records of the Zoological Survey of India, 123(2S), 363–378. https://doi.org/10.26515/rzsi/v123/i2S/2023/172530

Issue

Volume 123, Issue 2S, Special Issue 2023

Section

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