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Acta Biomedica Scientia

Volume 4, Issue 3, 2017
Mcmed International
Acta Biomedica Scientia
Issn
2348 - 215X (Print), 2348 - 2168 (Online)
Frequency
bi-annual
Email
editorabs@mcmed.us
Journal Home page
http://mcmed.us/journal/abs
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Abstract
Title
DISTRIBUTION AND SEASONAL VARIATION OF SOME GRACILARIA SPECIES (RHODOPHYCEAE) IN THOOTHUKUDI REGION FROM THE SOUTH EAST COAST OF TAMIL NADU, INDIA
Author
John Peter Paul J1*, Iniya Udhaya C1, Shri Devi SDK2
Email
johnarock2008@yahoo.com
keyword
Rhodophyceae, Gracilaria, Seasonal variability, Thoothukudi.
Abstract
The present study was aimed to carry out the seasonal variation of Gracilaria species in Thoothukudi region in the south east coast of Tamil Nadu, India. Thoothukudi region was divided in to four stations namely Manapad, Trichendur, Thoothukudi and Vembar for the collection and determination of seasonal variability of Gracilaria species. Monthly survey was conducted regularly and the Gracilaria species were enumerated at random using a quadrate (0.5m2). A total of seven species of Gracilaria were collected in the study area such as Gracilaria corticata, Gracilaria cylindrica, Gracilaria dura, Gracilaria edulis, Gracilaria fergusonii, Gracilaria tuticorinensis and Gracilaria verrucosa. The frequency and density were calculated and all the Gracilaria species showed a similar pattern of seasonal variation. Among the Gracilaria species collected the highest frequency (66.25%) and density (4.56) were observed in Gracilaria fergusonii during monsoon season and the lowest frequency (16.25%) and density (1.01) were recorded in Gracilaria corticata during summer season. From the present study it was concluded that all the Gracilaria species (Rhodophyceae) exhibited the maximum frequency and density during the monsoon season followed by the declined trend was observed in the successive seasons. During the summer season the frequency and density of Gracilaria species was minimum in the selected Thoothukudi region of the south east coast of Tamil Nadu, India.
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