Limnological notes on the finfish production problem of Laguna de Bay.
- Global styles
- MLA
- Vancouver
- Elsevier - Harvard
- APA
- Help
![Thumbnail](/bitstream/handle/10862/1291/1291-SantiagoAE1988.pdf.jpg?sequence=2&isAllowed=y)
ดู/ เปิด
วันที่
1988ผู้เขียน
Page views
2,009ASFA keyword
AGROVOC keyword
Taxonomic term
Geographic names
เมตาดาต้า
แสดงระเบียนรายการเต็ม
Share
นามธรรม
Environmental problems have significantly affected fishery production and management in Laguna de Bay, the largest lake in the Philippines. Fishermen and fishpen operators are complaining about the slow growth of fish and low yields in the lake. In the 70’s two croppings were possible in fishpens since it took only 3 to 4 months then rear milkfish from fingerlings to marketable size (Felix, 1976). But in the early 80’s, stocked fingerlings attained a marketable size of about 200 g after 8 to 15 months (LLDA, 1983). In 1973 when the total fishpen area was only 5,000 ha, the annual harvest was 4 metric tons (MT)/ha. When fishpens covered 31,000 ha of the lake area in 1982, the annual yield dropped to 2 MT/ha (Centeno et al., 1987). Furthermore, the total open water catch of nearly 83,000 MT in the early 60’s (Rabanal et al., 1964) was reduced to one-fourth in the 80's.
While the big drop in yield has been largely attributed to the proliferation and mismanagement of fishpens, over-exploitation of lake resources, and seasonal changes in the productivity of the lake (Centeno et al., 1987), the author attributes the present crisis basically to a lack of understanding o the basic ecological attributes of Laguna de Bay and their relation to fish growth and production. This paper is a brief commentary on the Limnological characteristics of Laguna de Bay tat are quite important in finfish production.
การอ้างอิง
Santiago, A. E. (1988). Limnological notes on the finfish production problem of Laguna de Bay. Natural and Applied Science Bulletin , 40(2), 119-121. http://hdl.handle.net/10862/1291
Type
ArticleISSN
0028-0682คอลเลกชัน
- Journal Articles [1223]
Related items
Showing items related by title, author, creator and subject.
-
International Milkfish Workshop Conference, May 19-22, 1976, Tigbauan, Iloilo, Philippines
Southeast Asian Fisheries Development Center, Aquaculture Department; International Development Research Centre (Aquaculture Department, Southeast Asian Fisheries Development Center, 1976) -
Survey on the use of natural food and supplemental feed in commercial milkfish farms on Panay, Philippines
Lückstädt, Christian; Focken, Ulfert; Coloso, Relicardo; Becker, Klaus (Stuttgart University, 2000)This study evaluated the feed intake of the milkfish (Chanos chanos Forsskål) in commercial brackishwater ponds under different management regimes. Feed intake and growth were compared between a rather intensive culture ... -
Ongoing research studies on maturation and spawning of milkfish, Chanos chanos at the brackishwater shrimp and milkfish culture applied research and training project, Jepara, Indonesia
Alikunhi, K. H. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1976)The paper gives an account of the research work carried out at Jepara, Indonesia, on induction of maturity of milkfish in ponds and enclosures, and procurement of the spawners from the wild for seed production by hypophysation. ...