Mollusc diversity at pulicat Lagoon (India)

Abstract

During our routine ecological survey conducted at Pulicat Lagoon, the most diverse class Gastropods comprised of 26 families with 34 species and Bivalvia with 13 families and 17 species were recorded. The most abundant molluscs species was Crassostrea madrasensis, captured between October 2013 − September 2015. Quite a good number of molluscs were washed ashore. The economic value of the shells in the field of cosmetics was raised high recently. Both in terms of aquaculture and market value the attention should be diverted towards their conservation. With few exceptions, the majority of these molluscs were ornamental. RÉSUMÉ: La diversite des mollusques du lagon de Pulicat (India).Durant notre étude écologique de routine effectuée dans le lagon de Pulicat, la classe la plus diversifiés des Gastropodes contient 34 espèces et 26 familles suivies par les Bivalves avec 17 espèces et 13 familles. Dans les prises d'Octobre 2013 -Septembre 2015, l'espèce la plus abondante a été la Crassostrea madrasensis. Un grand nombre de mollusques s'échouent sur les rives et récemment. La valeur économique des coquillages a augmenté de manière significative. En ce qui concerne l'aquaculture ainsi que la valeur de marché, l'attention devrait se porter plus vers leur conservation. A quelques exceptions près, la grande majorité sont des mollusques ornementaux. REZUMAT: Diversitatea moluștelor din Laguna Pulicat (India).În cadrul studiului nostru ecologic de rutină, efectuat în laguna Pulicat, s-au înregistrat 34 specii din 26 familii aparținând clasei Gastropoda, cea mai bine reprezentată, și 17 specii din 13 familii aparținând clasei Bivalvia. În capturile din Octombrie 2013 -Septembrie 2015, specia cea mai abundentă a fost Crassostrea madrasensis. Un mare număr de moluște au fost aduse pe țărm de valuri. Valoarea economică a cochiliilor cu aplicații cosmetice a crescut recent. Atât în termeni de acvacultură cât și de valoare de piață, atenția trebuie reorientată către conservarea acestor specii. Cu câteva excepții, majoritatea acestor moluște sunt ornamentale.

Proximate and Macromineral Content of Gastropods in the Mangrove Area of Desa Bakau Sambas Regency

“…Kondisi tersebut membuat area mangrove memiliki kandungan bahan organik tinggi yang dimanfaatkan sebagai sumber makanan berbagai jenis biota. Selain itu, hutan mangrove secara ekologi berperan penting sebagai spawning dan nursery ground (Rangkuti et al, 2017), serta menyediakan habitat (Kordi, 2012) bagi organisme akuatik, seperti ikan (Faruk et al, 2019;Al Jufaili et al, 2021), kerang (Deni et al, 2020;Wulandari et al, 2022;Safitri et al, 2023), udang (Josia et al, 2019;Faisal et al, 2021), kepiting bakau (Yulianti et al, 2018;Kusuma et al, 2021), termasuk beberapa jenis gastropoda.…”

​An Annotated Checklist of Finfish and Shellfish Diversity of Pulicat Lake, Southeast Coast of India

“…During the present research, a considerable difference in the number of fin and shell fishes has been observed with respect to the earlier reports, viz., Raj (2006), who reported 168 species of fishes, 12 species of prawns and 19 species of crabs from the lake, Govindan and Ravichandran ( 2016), who could record 83 finfish species belonging to 14 orders and 50 families from the lake, while, Saraswathy and Pandian (2016) recorded 81 species of fishes, 5 species of prawns and 3 species of crabs, whereas, Ramanibai and Govindan (2018) recorded 51 species of molluscs including gastropods (34) and bivalves ( 17) from the lake. Comparing the data of present research with the literature of Raj ( 2006), it is quite clear that there is visible decline of fish diversity and the same has been witnessed even in the case of molluscan diversity compared to the results of Ramanibai and Govindan (2018).…”

Gastropod Diversity in Mangrove Forests of Mojo Village, Ulujami District, Pemalang Regency, Indonesia

“…The feeding activity of gastropods produces faeces and mucus which provide suitable habitat for microorganisms (Astor et al, 2015). Thus, the existence of gastropods affects the micro-ecological condition of an ecosystem (Ramanibai and Govindan, 2018). Moreover, the structural composition and abundance of particular species may emphasize the role of gastropod community in the ecosystem.…”

“…Thus, selective capture should be applied to achieve food security. However, gastropods are also utilized for some other purposes, such as medicine, jewellery, tools and pets (Ramanibai and Govindan, 2018). Thus, the potential of gastropod utilization is widely opened and may alter its capture.…”