Now showing items 1-10 of 330
Nature parks, museums, gardens, and zoos for biodiversity conservation and environment education: the Philippines
- AMBIO: A Journal of the Human Environment, 1998 - Springer Verlag
Public consciousness about biodiversity and the environment, and their importance for sustainable development is not widespread in the Philippines. This article advocates nonformal environment education through nature ...
Significant organotin contamination of sediment and tissues of milkfish in brackish water ponds.
- Bulletin of Environmental Contamination and Toxicology, 1999 - Springer Verlag
Organotin pesticides, triphenyltin acetate or hydroxide have long been used as an inexpensive method to control the population of brackish water shails Cerithidea cingulata in the pond culture of milkfish (Chanos chanos ...
Protected areas for biodiversity conservation and environment education in the Philippines.
- Philippine Journal of Science, 1999 - Science and Technology Information Institute
The Philippines holds the distinction of having enormous biodiversity with the highest density of endemic species but has the problem of very fast decline in old-growth forests and the highest number of endangered mammal ...
Economic feasibility analysis of the monoculture of mudcrab (Scylla serrata) Forsskal
- Aquaculture, 1990 - Elsevier
Mudcrabs, Scylla serrata Forsskal, were monocultured at different stocking densities: 5000, 10 000, 15 000 and 20 000/ha for 90 days. Highest mean weight, survival and relative growth increment (P>0.05) were obtained from ...
Daily rates of ingestion on rotifers and Artemia nauplii by laboratory-reared grouper larvae of Epinephelus suillus
- The Philippine Scientist, 1994 - San Carlos Publications, University of San Carlos
The amount of rotifers and Artemia nauplii consumed daily by the grouper Epinephelus suillus larvae was determined through examination of gut contents. The larvae (2.6 mm TL) were initially fed rotifers on day 2 and newly ...
Intensive prawn farming in the Philippines: ecological, social, and economic implications
- AMBIO: A Journal of the Human Environment, 1991 - Springer Verlag
The benefits of intensive farming of the giant tiger prawn Penaeus monodon in the Philippines are discussed in relation to the environmental costs. Ecological effects include mangrove conversion into ponds; use of antibiotics ...
Diel activity patterns in Metapenaeus and Penaeus juveniles
- Hydrobiologia, 1995 - Springer Verlag
Small (5–10.9 mm carapace length), medium (11–15.9 mm), and large (16–20.9 mm) juveniles of Metapenaeus anchistus, Metapenaeus sp., Penaeus monodon and P. merguiensis were stocked individually in glass tanks provided with ...
Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal)
- Fish Physiology and Biochemistry, 1992 - Springer Verlag
Steroid hormone profiles accompanying sexual maturation in captive milkfish are described. There were no significant differences in levels of serum estradiol 17-β (E2) and testosterone (T) between immature male ...
Molluscicidal activity of tobacco dust against brackishwater pond snails (Cerithidea cingulata Gmelin)
- Crop Protection, 1998 - Elsevier
Toxicity tests on the effect of tobacco dust against brackishwater pond snails (Cerithidea cingulata Gmelin) of various stages or size ranges were conducted under controlled laboratory conditions. The 72-h LC50 ...
Preliminary studies on the rearing of the red-spotted grouper, Epinephelus coioides larvae using copepod nauplii as initial food.
- UPV Journal of Natural Sciences, 1996 - University of the Philippines in the Visayas
One day old red-spotted grouper (Epinephelus coioides) larvae from SEAFDEC, Iloilo, were packed at 3.300 ind/L and transported to Dagupan, Pangasinan for larval rearing. Transport time was about 10 hours. More than 90% of ...