Techniques For Cryopreservation ofspermatophores of The Giant Freshwater Prawn,Macrobrachium rosenbergii (De Man)

Damrongphol, Praneet; Akarasanon, Khattiya

doi:10.1201/9780849380549.ch43

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“…Recently, owing to a number of human interventions, the stock of M. rosenbergii suffered a drastic decline in Vembanad Lake (Jayachandran & Indira, 2010;Kurup & Harikrishnan, 2000). It has been reported that this species supported an annual average landings of 400 tonnes in sixties which dwindled to mere 38 tonnes in eighties (Kurup et al, 1992;Raman, 1967). However, the stock showed improvement during nineties escalating landings to 129 tonnes which again declined drastically (Harikrishnan & Kurup, 2001;Jayachandran & Indira, 2010).…”

Section: Neighbour-joining Tree and Genetic Distance Datamentioning

confidence: 96%

“…M. rosebergii, M. idella, M. striatum, M. equidens, M. scabriculum and M. rude (Deepak, Nidhin, Anil Kumar, Pradeep, & Harikrishnan, 2015;Sureshkumar, 1998). M. rosenbergii and M. idella supported lucrative fishery while other species recorded only sporadic occurrence in fishery (Harikrishnan, 1997;Harikrishnan & Kurup, 2001;Kurup, Sebastian, Sankaran, & Rabindranath, 1992;Raman, 1967). Vembanad Lake and its confluent rivers (9°28' and 10°10'N and 76°13' and 31'E) serve as the natural abode for M. rosenbergii, and this species is reported as a true denizen of Kuttanad region, S. India) and locally known as 'Kuttanadan Konju'.…”

Section: Neighbour-joining Tree and Genetic Distance Datamentioning

confidence: 99%

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Targeted species substitution in giant freshwater prawn trade revealed by genotyping

et al. 2019

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This study presents the molecular barcoding results of giant freshwater prawns and allied products collected from inland landing centres, markets and stores of Vembanad Lake (Kerala state, India) which is recognized as a natural abode for Macrobrachium rosenbergii. Prawns collected from landing centres of the lake could be easily identified as the above with their large size and morphological characters. There were certain ‘alien’ prawns and prawn products (headless shell on, peeled and deveined) traded in the markets and stores of this region as M. rosenbergii. Genotyping of all these samples using COI and 16S rRNA gene sequences confirmed the speciation of individuals from inland landing centres as M. rosenbergii, ‘alien’ prawns and certain prawn products as M. malcolmsonii. To ensure the same and to detect the presence of any other congeners of genus Macrobrachium inhabiting Vembanad Lake, additional homologous COI and 16S rRNA sequences available in NCBI were acquired and incorporated for molecular analyses. Results generated from NJ tree and genetic distance data confirmed the trade of non‐indigenous Macrobrachium species M. malcolmsonii in Kerala for the first time and its use as a species substituent for M. rosenbergii.

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Section: Neighbour-joining Tree and Genetic Distance Datamentioning

confidence: 96%

Section: Neighbour-joining Tree and Genetic Distance Datamentioning

confidence: 99%