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Notes on ovarian rematuration of ablated sugpo (prawn) Penaeus monodon Fabricius
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
To what extent spent P. monodon females can remature and spawn successive broods is an important question in terms of recycling spawners in a commercially viable operation. Corollary to this is the quantity and quality of ...
Methods of harvesting and preservation of the diatom Chaetoceros calcitrans
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
Diatom culture and larval feeding experiments were conducted to test the viability and acceptability of preserved algal concentrates. C. calcitrans is characterised by the presence of setae which keep them suspended in ...
Laboratory breeding of the mud crab Scylla serrata (Forskal) through the zoea and megalopa stages to the crab stage
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
A series of experiments is being conducted to establish breeding techniques to mass-produce seedlings of S. serrata for pond cultivation to meet the commercial demand for the crab. The objective is to culture the crab ...
A simple method of tagging prawns
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The recognition of individual animals is crucial to many aspects of research. Prawns (Penaeus monodon) present unique difficulties in this respect since they molt regularly. Thus, almost all tagging and marking methods ...
Annual report 1976
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The propagation of the mud crab Scylla serrata (F.) de Haan
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The mud crab Scylla serrata is an important commercial species found in many brackish areas in the Philippines. During spawning and hatching, the berried females migrate to the sea. Seeds for pond stocking are obtained ...
A suctorean parasite of Penaeus monodon larvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
A new disease caused by a suctorean has been observed in tank-spawned and reared P. monodon larvae. Identification of the etiologic agent pointed to Ephelota gemmipara R. Hertwig, a species commonly found to inhabit hydroid ...
Effect of furanace on the development of larval stages of Penaeus monodon Fabricius
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
Zoea 2 (Z<sub>2</sub>), Mysis 1 (M<sub>1</sub>) and Postlarva 1 (P<sub>1</sub>) of P. monodon artificially spawned in closed-system concrete hatchery tanks were bioassayed for their tolerance to the antibiotic furanace. ...
Identification and culture of common diatoms as possible feed for Penaeus monodon
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
Diatoms were collected from Buyuan Bay, and from the hatchery tanks at Tigbauan, to determine the commonly occurring species, the feasibility of culturing these species, and the potential of these selected species as food ...
Effect of nitrite, ammonia, and temperature on P. monodon larvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
P. monodon larvae were studied for the effects of temperature, ammonia, and nitrite on survival. Toxicity levels of nitrite were found to vary with larval stage. Larvae could tolerate ammonia up to about 10 ppm, with the ...