EVALUATION OF SEAWEED BIOACTIVES ON COMMON AQUATIC
FLORAL AND FAUNAL WEEDS OF SHRIMP PONDS
By:Manilal, A (Manilal, Aseer)[ 1 ] ; Sujith, S (Sujith, S.)[ 1 ] ; Kiran, GS (Kiran, G. Seghal)[ 1 ] ; Selvin, J (Selvin,
Joseph)[ 1 ] ; Panikkar, MVN (Panikkar, M. V. N.)[ 2 ]
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THALASSAS
Volume: 27
Issue: 1
Pages: 47-56
Published: JAN 2011
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Abstract
In the present study, weedicidal activity of extracts from twenty seaweeds (Chlorophyta-8, Phaeophyta-6, Rhodophyta6) were evaluated against a group of common aquatic floral and faunal weeds of shrimp/prawn pond of Kollam coast
(Southwest coast of India). The methanolic extract of seaweeds were subjected to in vitro activities such as ichthyotoxic
assay against three common weed fishes, growth inhibition assay against pond weed vegetations such as Lemna sp.
and Wolffia sp. and antialgal assay against Oscillatoria sp. Of the twenty algal species screened, the extract from a
brown algae, Stoechospermum marginatum exhibited broadest and highest mode of bioactivity. The toxicity of S.
marginatum against faunal weeds were arranged in the order of decreasing toxicity as follows; Ambassis sp. (LD(50)
112 +/- 3.1 mu g/ml)> Glossogobius sp. (LD(50) 173.2 +/- 1.9 mu g/ml) >Aplocheilus sp. (LD(50) 204 +/- 2.7 mu g/ml) >
Penaeus monodon (non-target organism) (LD(50) 8.5 +/- 2.3 mg/ml). In toxicity assay against floral weeds, S.
marginatum showed significant growth inhibition in Wolffia sp. and Lemna sp. at 400 mg/L and 600 mg/L against
Oscillatoria sp. Findings of the present study ultimately set the base-line data for exploring the potentials of seaweeds
against floral and faunal weeds. The phyco-chemical constituents of S. marginatum was investigated by GC-MS
analysis. The GC-MS profile of the algal extract revealed the presence of diethyl phthalate (t(R) = 11.34 min), (84.45%)
as a major constituent. Thus it was considered that a brown alga, S. marginatum might be natural source suitable for
development of environmentally compatible agrochemicals.
Keywords
Author Keywords:Algae extract; icthyocidal activity; antialgal potential; phytotoxicity; weed fish; hydrophytic weeds
KeyWords Plus:SOUTHWEST
COAST; INDIA; BIOACCUMULATION; CYANOBACTERIA; MICROALGAE; FISHES; ALGAE
Author Information
Reprint Address: Selvin, J (reprint author)
Bharathidasan Univ, Dept Microbiol, Tiruchchirappalli 620024, India.
Addresses:
[ 1 ] Bharathidasan Univ, Dept Microbiol, Tiruchchirappalli 620024, India
[ 2 ] Sree Narayana Coll, Dept Bot, Kollam 691001, Kerala, India
E-mail Addresses:seeshegal@yahoo.co.in; selvinj@rediffmail.com
Funding
Funding Agency
Grant Number
Council of Scientific and Industrial Research (CSIR), New Delhi, India
Department of Biotechnology, India
BT/PR8064/AAQ/03/290/2006
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Publisher
UNIV VIGO, CAMPUS DE MARCOSENDE, SERVICIO PUBLICACIONES, VIGO, 36310, SPAIN
Categories / Classification
Research Areas:Marine & Freshwater Biology; Oceanography
Web of Science Categories:Marine & Freshwater Biology; Oceanography
Document Information
Document Type:Article
Language:English
Accession Number: WOS:000285432200004
ISSN: 0212-5919
Other Information
IDS Number: 696HJ
Cited References in Web of Science Core Collection: 35
Times Cited in Web of Science Core Collection: 4