Charu Mussel

Invasive mussel spreads in backwaters

An invasive mussel native to the South and Central American coasts is spreading quickly in the backwaters of Kerala, elbowing out other mussel and clam species and threatening the livelihoods of fishermen engaged in molluscan fisheries.
The rapid spread of the Charu mussel (Mytella strigata) may have been triggered by Cyclone Ockhi which struck the region in 2017, according to a paper published in the Journal of Aquatic Biology and Fisheries.

Worst-hit

Surveys show the presence of the Charu mussel in the Kadinamkulam, Paravur, Edava-Nadayara, Ashtamudi, Kayamkulam, Vembanad, Chettuva and Ponnani estuaries/backwaters.
Ashtamudi Lake, a Ramsar site in the Kollam district, remains the worst hit. With a population as high as 11,384 per sq metre here, it has replaced the Asian green mussel (Perna Viridis) and the edible oyster Magallana bilineata (known locally as moringa).
Externally, the Charru mussel resembles the green and brown mussels (kallummekka in Malayalam), but is much smaller in size. Its colour varies from black to brown, purple or dark green.
In all probability, the mussel reached the Indian shores attached to ship hulls or as larval forms in ballast water discharges.

Solution

There is also a need to promote studies on invasion biology and strengthen awareness of marine invasive species.

Source: TH

Join Our Telegram

Oceanic Anoxic Event 1a and MASS EXTINCTION

Oceanic Anoxic Event 1a and MASS EXTINCTION

25 Dec, 24
SHARE

Oceanic Anoxic Event 1a from the Paris Basin (Environment) Paper-3 PMP OAE 1a refers to a period during the Cretaceous Period (145 million years ago and ended 66 million years ago) when Earth's oceans became depleted of oxygen, causing a significant disruption in marine life. Cause: The event is believed to have been

Viksit Panchayat Karmayogi (Good governance)

26 Dec, 24
SHARE

Viksit Panchayat Karmayogi (Good governance) Governance GS PAPER-2 PMP Dr. Jitendra Singh launched the ‘Viksit Panchayat Karmayogi’ initiative on Good Governance Day, celebrated to mark the 100th birth anniversary of former Prime Minister Atal Bihari Vajpayee. The initiative, which is part of the broader ‘Prashasan Gaon

Major programmes to control Air Pollution

23 Dec, 24
SHARE

Major programmes to control Air Pollution National Clean Air Programme? It was launched by the Ministry of Environment, Forests and Climate Change (MoEFCC) in January 2019. It is the first-ever effort in the country to frame a national framework for air quality management with a time-bound reduction target. The

Air pollution and Air quality Measures in India

21 Dec, 24
SHARE

Air pollution and Air quality Measures in India (Environment) GS Paper-3 P-M-P Air pollution may be defined as the presence of any solid, liquid or gaseous substance including noise and radioactive radiation in the atmosphere in such concentration that may be directly and/or indirectly injurious to humans or other l

Geopolitical Significance of Ports

20 Dec, 24
SHARE

Geopolitical Significance of Ports (IR) Act as geopolitical assets: Ports enhance the projection of strategic reach, which helps strengthen the country’s control over important sea and energy supply routes. E.g. Indian Navy’s staging base at Agalega Islands will enable marine patrols