SEAFDECINSTITUTIONAL REPOSITORY
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • English 
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • Login
View Item 
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD Journal Articles
  • View Item
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD Journal Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Feeding ecology of silverperch, Terapon plumbeus Kner, and the impact fish-pens in Laguna de Bay, Philippines

Thumbnail
View/Open
Request this document
Date
2000
Author
Kock, M.
Focken, U.
Richter, H.
Becker, K.
Santiago, C. B.
Page views
131
Metadata
Show full item record

Cited times in Scopus



Share 
 
Abstract
Aquaculture is an important factor in the fishery of Laguna de Bay in the Philippines; fish-pens and net-cages covered ≈10% of the lake surface in the late 1990s. The present study was carried out to assess the possible influences of aquaculture on a wild fish species, silverperch, Terapon plumbeus Kner, with a special emphasis on the feeding ecology of this fish. For the purposes of the investigation, 24-h samples were taken at 2-month intervals close to a fish-pen as well as in open water over a one-year period to acquire more information on this species. Significant differences in standard length and total weight were found between stations and sampling months. In open water, a mean standard length of 53.6 mm and a mean total weight of 4.2 g were found, whereas close to the fish-pen, the corresponding values were 57.6 mm and 5.4 g, respectively. The maximum mean standard length was attained around December 1996 and February 1997 (59.5 mm in open water; 66.1 mm close to the fish-pen), and the minimum was found in June 1996 (49.1 mm in open water; 46.2 mm close to the fish-pen). Noticeable differences were found in the food spectrum between the two sampling stations. Zooplankton, the major food source at both stations, was more important in the stomach content of fish in open water. The same was true for insects (i.e. chironomid larvae), although these did not make up such a large fraction of the diet. On the other hand, close to the fish-pen, aufwuchs-algae, phytoplankton and fish were more important. Generally, benthic organisms were consumed more frequently close to the fish-pen. Zooplankton was more important in the diet of smaller fish. In all size groups, the importance of zooplankton decreased during the rainy season.
URI
http://hdl.handle.net/10862/1874
Suggested Citation
Kock, M., Focken, U., Richter, H., Becker, K., & Santiago, C. B. (2000). Feeding ecology of silverperch, Terapon plumbeus Kner, and the impact fish-pens in Laguna de Bay, Philippines. Journal of Applied Ichthyology, 16(6), 240-246. https://doi.org/10.1046/j.1439-0426.2000.00240.x 
DOI
10.1046/j.1439-0426.2000.00240.x
Subject
marine fish ASFA; cultured organisms; stomach content ASFA; aquaculture effluents ASFA; feeding behaviour ASFA; zooplankton ASFA; culture effects; zoobenthos ASFA; epiphytes ASFA
Taxonomic term
Terapon plumbeus GBIF
Collections
  • AQD Journal Articles [1180]

© SEAFDEC 2023
Contact Us
 

 

Browse

All of SIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics
Related Links
SEAFDEC/TD IRSEAFDEC/AQD IRSEAFDEC/MFRDMD IRSEAFDEC/IFRDMD IR

© SEAFDEC 2023
Contact Us