Status and economic impact of Parachromis Maraguensis in Taal Lake, Philippines
Issue Date
12-2006
Abstract
Taal Lake, home to world's only freshwater sardine, Sardinella tawilis and other endemic and indigenous species suffers from invasion of non-native fish, Parachromis managuensis. A study on P. managuensis has been conducted from March 2005 to February 2006 to determine the ecological parameters that the fish and its impact on the lake's biodiversity and the economy of the lakeshore communities.
Monitoring of ecological parameters was conducted monthly in sixteen sampling station affected by the alien fish. Samples from landed fish catch were taken from eight landing centers around Taal Lake for 22 days a month at two days interval during peak landing time. An interview with fisherfolks and consumers was undertaken to determine relevant information on the economic impact of P. managuensis.
Ecological parameters in the alien fish native range have matched that of Taal Lake. The percentage composition of the five major fishes caught showed that P. managuensis ranked fourth in abundance. The alien fish has been a source of food and income to fish farmers but its market value is low enough to augment their family needs. The fish is not beneficial for it has just displaced the indigenous species that demand higher market value.
Source or Periodical Title
Journal of Environmental Science and Management
ISSN
0119-1144
Volume
9
Issue
2
Page
1-19
Document Type
Article
College
School of Environmental Science and Management (SESAM)
Frequency
semi-annually
Physical Description
maps, pictures, tables, graphs
Language
English
Recommended Citation
Rosana, Maurita V.; Agasen, Edna V.; Villanueva, Leah S.; Clemente, Julian P, Jr.; Kawit, Nenita S.; and de la Vega, Josephine T., "Status and economic impact of Parachromis Maraguensis in Taal Lake, Philippines" (2006). Journal Article. 4256.
https://www.ukdr.uplb.edu.ph/journal-articles/4256