Study on spawning and the complete larval cycle of invasive Charru mussel Mytella strigata (Hanley, 1843) (bivalvia: Mytilidae) under captive condition.

Gomathi, P and Anil, M K and Ambarish, Gop P and Surya, S and Raju, B and Krishna Priya, P M and Shalini, O and Praveen, P and Sasikumar, Geetha and Laxmilatha, P and Sharanya, M P (2023) Study on spawning and the complete larval cycle of invasive Charru mussel Mytella strigata (Hanley, 1843) (bivalvia: Mytilidae) under captive condition. In: Abstracts- 12th Indian Fisheries and Aquaculture Forum (12th IFAF). Convener, 12th Indian Fisheries and Aquaculture Forum, Tamil Nadu, p. 447.

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Abstract

The American brackish water mussel Mytella strigata (Hanley, 1843) has invaded all most all the backwaters of South Kerala (unpublished reports), and the species is threatening the local mussel species, especially Perna viridis in the backwaters of Kerala and also affecting cage farming operations adversely by clogging the nets. A native of Central and South America (notably Panama, Argentina, Brazil and Venezuela), it had invaded the southern United States (mainly Florida and Georgia). Later, they got transferred to the Philippines, Singapore, Thailand, and India. To study the larval cycle of the species, adult animals collected from Kayamkulam backwaters spawned in the hatchery at 35 ppt salinity. They were reared through all the larval stages like Dveliger, umbo, pediveliger and plantigrade to spat and juvenile of 70 days old to get a clear idea about its early stagebiology, which can be used in controlling their spread. Eggs were lemon yellow and measured 35 to 53-micron. Newly hatched (1dph) larvae measured 77.82 µ in length, and dinoflagellate Isochrysis galbana was given as feed till 15 dph and afterwards mixed algae was given. Settlement of larvae started after 13 dph, and by 15 dph, all larvae completed metamorphosis and settled. Compared to native species; Asian green mussel Perna viridis, this alien mussel has a shorter life cycle, early settlement of larvae and adaptability to any kind of feed, makes this species a aggressive invasive animal in the natural waters

Item Type:	Book Section
Uncontrolled Keywords:	Invasive Mussel; Mytella strigata; Spawning; Larval stages
Subjects:	Molluscan Fisheries > Mussel culture
Divisions:	CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division Subject Area > CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division
Depositing User:	Arun Surendran
Date Deposited:	29 Nov 2023 11:58
Last Modified:	11 Jan 2024 07:01
URI:	http://eprints.cmfri.org.in/id/eprint/17731

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