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Mass production in concrete tanks of sugpo Penaeus monodon Fabricius spawners by eyestalk ablation
Primavera, Jurgenne 
; ; (Fisheries Research Society of the Philippines, 1978)
; ; (Fisheries Research Society of the Philippines, 1978)
Two batches of 196 and 181 P. monodon females were ablated on one eyestalk in March and July 1977, respectively, and a control batch of 180 unablated females was stocked in July 1977. The females were stocked with males ...
Mangroves and shrimp pond culture effluents in Aklan, Panay Is., central Philippines
Primavera, Jurgenne ; ; Lebata, M. J. H. L. ; ; (University of Miami, Rosenstiel School of Marine and Atmospheric Science, 2007)
; ; Lebata, M. J. H. L. ; ; (University of Miami, Rosenstiel School of Marine and Atmospheric Science, 2007)
The capacity of a natural mangrove system in Ibajay, Aklan province, central Philippines to process shrimp pond culture effluents was assessed through analysis of mangrove community structure and 24-hr monitoring of water ...
Pond culture of sugpo, P. monodon (Fabricius)
Primavera, Jurgenne ; (BFAR, 1976)
; (BFAR, 1976)
A resume is presented of the practical considerations involved in establishing a sugpo pond culture operation, as a guide to fish farmers, extension workers and others interested in producing marketable sugpo in the ...
Diel activity patterns in Metapenaeus and Penaeus juveniles
Primavera, Jurgenne ; Lebata, J. (Springer Verlag, 1995)
; Lebata, J. (Springer Verlag, 1995)
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 ...
Studies on the egg quality of Penaeus monodon Fabricius, based on morphology and hatching rates
Primavera, Jurgenne ; (Elsevier, 1981)
; (Elsevier, 1981)
Eggs of Penaeus monodon are classified into five different types on the basis of morphological criteria and hatching rates — A1 eggs undergo normal development with 58% hatching rate; A2 eggs show delayed and/or abnormal ...
Ovarian rematuration of ablated sugpo prawn Penaeus monodon Fabricius
Primavera, Jurgenne ; (Institut National de la Recherche Agronomique, 1978)
; (Institut National de la Recherche Agronomique, 1978)
Spent Penaeus monodon females were tagged around one eyestalk with numbered brass tags, stocked in a concrete tank with males, and periodically examined for ovarian rematuration over a six-month period (February to August, ...
Mud crab pen culture: replacement of fish feed requirement and impacts on mangrove community structure
Primavera, Jurgenne ; ; ; Lebata, Ma. Junemie J. ; ; ; (Blackwell Publishing, 2010)
; ; ; Lebata, Ma. Junemie J. ; ; ; (Blackwell Publishing, 2010)
Brackishwater pond culture has been a major factor in mangrove loss in Southeast Asia, hence, the need to develop environment-friendly technologies such as mud crab Scylla (Portunidae) culture in mangrove pens exists. This ...
Janitor fish Pterygoplichthys disjunctivus in the Agusan Marsh: A threat to freshwater biodiversity
; ; Primavera, Jurgenne (University of the Philippines Los Baños (UPLB), 2007)
(University of the Philippines Los Baños (UPLB), 2007)
The aim of this study is to verify reports on the presence of invasive alien catfish, known locally as janitor fish, including their possible impact on freshwater biodiversity in the Agusan Marsh, Northeastern Mindanao in ...
Intensive prawn farming in the Philippines: ecological, social, and economic implications
Primavera, Jurgenne (Springer Verlag, 1991)
(Springer Verlag, 1991)
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 ...
Effect of light quality and eyestalk ablation on ovarian maturation in Penaeus monodon
; Primavera, Jurgenne (University of the Philippines Los Baños, 1981)
(University of the Philippines Los Baños, 1981)
Prawns were subjected to the following treatments: blue light, red light, natural light, and natural light plus unilateral eyestalk ablation. Unablated prawns under blue and natural light developed stage III ovaries; under ...