Affiliation:
1. Centre of Advanced Study in Marine Biology , Faculty of Marine Sciences , Annamalai University , Parangipettai 608502, Tamilnadu , India
Abstract
Abstract
Ascidians are filter-feeding sac-like marine urochordates of great evolutionary, ecological and economic importance. Andaman and Nicobar Islands are one of the most important hot spots of biodiversity in India, while the ascidian diversity of this region is very scanty. Ascidians belonging to 29 species were identified at the Andaman and Nicobar Islands during the field research carried out from March 2014 to April 2015. Eight species (Didemnum granulatum, Didemnum molle, Didemnum psammatodes, Diplosoma listerianum, Lissoclinum fragile, Lissoclinum levitum, Lissoclinum patella, Trididemnum Cyclops) from the Didemnidae family were found and identified. Various diversity indices, such as the Shannon -Wiener index (H’), Margalef’s index (D), Pielou’s index (J’), K-dominance curves, Cluster Analysis and Multidimensional Scaling, were used to analyze the diversity, richness and evenness of species, and to compare the diversity between samples and their resemblance in terms of species composition. The maximum species richness was observed in Campbell Bay (2.424) and the minimum in Haddo Wharf (0.910). This finding shows the rich species diversity of ascidian fauna at Andaman and Nicobar Islands.
Reference79 articles.
1. Abdul Jaffar Ali, H.A., Sivakumar, V. & Tamilselvi, M. (2009). Distribution of alien and cryptogenic ascidians along the southern coasts of Indian peninsula. World Journal of Fish and Marine Sciences 1(4): 305–312.
2. Abdul Jaffar Ali, H.A., Tamilselvi, M., Sivakumar, V., Zaman, G.M.H. & Muthu Mohamed, H.S. (2011). Marine Ascidian Biodiversity- A promising resource for bioactive compounds. Supplement to Advanced Biotech. 10 (10): 26–3.
3. Bulleri, F. & Chapman, M.G. (2010). The introduction of coastal infrastructure as a driver of change in marine environments. J. Appl. Ecol. 47: 26–35. 10.1111/j.1365-2664.2009.01751.x.
4. Buss, L.W. & Jackson, J.B.C. (1979). Competitive networks: nontransitive competitive relationships in cryptic coral reef environments. Am. Nat.113: 223–234.
5. Cameron, C.B., Garey, J.R. & Swall, B.J. (2000). Evolution of the chordate body plan: new insights from phylogenetic analyses of deuterostome phyla. Proc. Natl. Acad. Sci. 97: 4469–4474.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献