NDLI: Effect of harbour construction on the length weight relationship of pony fish Secutor ruconius (Hamilton-Buchanan)

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Effect of harbour construction on the length weight relationship of pony fish Secutor ruconius (Hamilton-Buchanan)

Content Provider	Semantic Scholar
Author	Santhanam, Venugopal Sujarajini, V.
Copyright Year	2012
Abstract	Gathering baseline data on ecology is essential for sustainable development in order to predict and minimize any future negative effects on living organisms. Dredging of harbour causes loss of benthic habitat and Secutor ruconius, (Pug nose pony fish) being a schooling demersal omnivore is a very likely candidate to reflect any effects of harbour building activities. In this study, therefore, the size and length weight relationship of the beach seine pony fish Secutor ruconius was examined in the Ampara district, in the month of October, 2010, at a site near the Oluvil harbour, prior to commencement of operations and at a relatively undisturbed control site in Maruthamunai, 20 km north of the harbour site. At each site, according to a stratified random sampling method , two boats were sampled in the morning, at about the same time of the day, to examine intra and inter site variations in estimates. From each boat 100-200 individuals of Secutor ruconius were collected for length and weight comparisons. Total length of Secutor ruconius was measured to the nearest 0.1 cm using a foot ruler and weight was measured on an electronic balance to the nearest 0.1 gm. The mean lengths and weights of Secutor ruconius in samples from undisturbed Maruthamunai site did not differ between boats but those of the disturbed Palamunai boat samples were different between themselves. However, the mean length and weight estimates of Secutor ruconius from the disturbed Palamunai site were always higher than those from the undisturbed Maruthamunai site (P
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://ir.lib.seu.ac.lk/bitstream/handle/123456789/2642/41.pdf?isAllowed=y&sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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