On the occurrence of buckler crab Cryptopodia angulata in the coastal waters of India

Abstract

The trend of marine non-indigenous species in India has been increasing, with more than half of the species probably being introduced by shipping. A live specimen of buckler crab <em>Cryptopodia angulata</em> was found along the west coast of India at 40 m depth. The recent new records at different Indian coastal locations suggest that the crab is widening its distribution. Shipping is thought to be the possible introduction vector (via ballast) for the spread of <em>C. angulata</em> in the coastal waters of India. Further, the favorable environmental conditions prevalent in the Indian coastal waters may facilitate the establishment and subsequent spread of <em>C. angulata</em>. The invasion of this buckler crab may have negative impact on the native species. Although not present in detectable numbers, <em>C. angulata </em>may pose a major threat to the native species, if it establishes. Information on the establishment and distribution of <em>C. angulata</em> from other locations along the Indian coast would be essential to comprehensively and effectively address the threat.