Search
Now showing items 11-16 of 16
Identification of postlarvae of the genus Penaeus appearing in shore waters
(Carcinological Society of Japan, 1981)
Diagnostic features for the identification of postlarval Penaeus found in the shore waters of the Philippines are described and categorized based on specimens caught from the wild and those hatched and reared in the ...
Acute toxicity of un-ionized ammonia to milkfish (Chanos chanos) fingerlings
(Fisheries Research Society of the Philippines, 1981)
The acute toxicity of un-ionized ammonia to milkfish (Chanos chanos) fingerlings was determined using a static bioassay system. The 24-, 48-, 72-, and 96-hr LC<sub>50</sub> values were calculated at 25.74 ppm NH<sub>3</sub>-N ...
Studies on the carbohydrates in the digestive tract of the milkfish Chanos chanos
(Springer Verlag, 1981)
Crude extracts from various regions of the digestive tract of pond grown milkfish were tested forttheir ability to catalyze the hydrolysis of various carbohydrates. The most active carbohydrases were those involved in the ...
Viability of frozen algae used as food for larval penaeids
(Fisheries Research Society of the Philippines, 1981)
Freezing with added chemicals as flocculants and protectants as means of preserving stock cultures was tried with four species commonly used as larval food. The species were Chaetoceros calcitrans, Skeletonema costatum, ...
Developmental and ecological stages in the life history of milkfish Chanos chanos (F.)
(Fisheries Research Society of the Philippines, 1981)
Seven stages in the life history of milkfish Chanos chanos are suggested: embryonic, yolksac larval, larval, postlarval, juvenile, sub-adult and adult stages. These were based on morphological differences and on their ...
A new device for recording the feeding activity of milkfish
(The Japanese Society of Scientific Fisheries, 1981)
Knowledge on the feeding activity is basic and very important for rearing fish. The information on the feeding activity rhythm of the animal suggests the proper time to feed it. Many devices have been designed to record ...