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Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Notes on ovarian rematuration of ablated sugpo (prawn) Penaeus monodon Fabricius
Primavera, Jurgenne 
; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
; (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 ...
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Courtship and mating behavior in Penaeus monodon Fabricius
Primavera, Jurgenne (Aquaculture Department, Southeast Asian Fisheries Development Center, 1978)
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1978)
An illustrated description is given of the courtship and mating behaviour of P. monodon. Courtship and mating follow three distinct phases: (1) parallel swimming of male and female from the bottom to a height of 20-40 cm ...
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Effect of different sex ratios of ablated wild-stock Penaeus monodon Fabricius on maturation, fecundity and hatching rates
; Primavera, Jurgenne (Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Survival, maturation, fecundity and hatching rates of unablated and ablated Penaeus indicus H.M. Edwards from brackishwater ponds
Primavera, Jurgenne ; ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
; ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
Penaeus indicus harvested after three months of rearing in brackishwater ponds and averaging 6.9 g for females and 5.6 g for males were stocked in two 12 cu m flowthrough ferrocement tanks at 240 females and 200 males per ...
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Studies on the egg quality of Penaeus monodon Fabricius based on morphology and hatching rates
Primavera, Jurgenne ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
Eggs of P. monodon are classified into 5 different types on the basis of morphological criteria and hatching rates: A<sub>1</sub> eggs, which undergo normal development with 58% hatching rate; A<sub>2</sub> eggs, which ...
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Effect of substrate types on fecundity and nauplii production of ablated Penaeus monodon Fabricius
; Primavera, Jurgenne ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
Experiments were undertaken to assess the survival, spawning, fecundity and nauplii production of ablated P. monodon females reared in flow-through broodstock tanks with white coralline and black sand substrate for 62 days. ...
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Viability of Penaeus monodon eggs after simulated transport conditions
Primavera, Jurgenne ; ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
; ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
P. monodon spawners, transported from maturation pens suffer from stress which in turn may lead to lowered spawning rate or fertility. Spawning the females in the maturation site and transporting the eggs to the hatchery ...
Journal: SEAFDEC Aquaculture Department Quarterly Research Report
Notes on the induced maturation and spawning in four-month-old Penaeus monodon Fabricius by eyestalk ablation
Primavera, Jurgenne ; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The ablation technique consisted of making an incision across the eyeball to allow free flow of fluids while holding the prawn under water, squeezing the eyeball contents outwards, and pinching hard the eyestalk tissue. ...
Capacity of mangroves to process shrimp pond effluents.
Primavera, Jurgenne (Aquaculture Department, Southeast Asian Fisheries Development Center, 2004)
(Aquaculture Department, Southeast Asian Fisheries Development Center, 2004)
Shrimp culture has been criticized for causing mangrove loss and discharging effluents laden with chemicals, organic matter and nutrients into waterways. Hence the SEAFDEC Council mandated SEAFDEC/AQD to undertake studies ...
Mangroves and aquaculture in Southeast Asia.
Primavera, Jurgenne (Aquaculture Department, Southeast Asian Fisheries Development Center, 2005)
(Aquaculture Department, Southeast Asian Fisheries Development Center, 2005)
The history of brackishwater pond culture in the Philippines and elsewhere in Southeast Asia has been associated with mangrove loss because in earlier times, the larger society has viewed mangroves and other wetlands as ...