Chemical relationship between red algae genus Laurencia and sea hare (Aplysia dactylomela Rang) in the North Borneo Island

Kishneth Palaniveloo, and Charles Santhanaraju Vairappan, (2013) Chemical relationship between red algae genus Laurencia and sea hare (Aplysia dactylomela Rang) in the North Borneo Island. Journal of Applied Phycology, 26 (2). pp. 1199-1205. ISSN 0921-8971

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Abstract

Red algae genus Laurencia is an interesting alga with the ability to produce halogenated secondary metabolites that exhibits ecological and pharmaceutical potential. In na-ture, Laurencia is selectively grazed by sea hares (Aplysia dactylomela). In this study, Laurencia populations in three islands (Mantanani, Sulug, and Dinawan Islands) in the coast-al waters of North Borneo were investigated and their chem-ical relationship with sea hare determined. Four species of Laurencia were found to grow abundantly in these waters, Laurencia snackeyi, Laurencia majuscula, Laurencia nangii, and Laurencia similis. Sea hares, Aplysia dactylomela, found grazing on Laurencia were collected and their chemical com-position determined. A total of 20 halogenated metabolites were isolated and identified via spectroscopic data. Isolated compounds could be grouped into syndrean (5), chamigrane (6), non-chamigrane sesquiterpene (3), cuparane (1), bromoindole (2), and C15 acetogenin (acetylene type) (3). Sea hares from Mantanani, Sulug, and Dinawan Islands contained a total of 9, 10, and 10 compounds, respectively. In addition,12-acetoxypalisadin B (1), which was isolated from sea hares of Sulug Island is a first record of its existence in nature.

Item Type: Article
Uncontrolled Keywords: Rhodophyta, Species diversity, Laurencia, Sea hare, Aplysia dactylomela, Halogenated metabolites
Subjects: Q Science > QD Chemistry
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 15 Oct 2015 08:13
Last Modified: 12 Oct 2017 04:35
URI: http://eprints.ums.edu.my/id/eprint/12018

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