SEAFDEC Institutional Repository: Recent submissions
Now showing items 4861-4880 of 5909
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The effects of iron compounds on the virulence of Vibrio anguillarum in Japanese eels and ayu
(Japanese Society of Fish Pathology, 1987)When Japanese eels (Anguilla japonica) were injected intramuscularly (IM) with ferric ammonium citrate (FAC) at a sublethal dose of 10 µg/g and followed by IM-injection with various doses of Vibrio anguillarum, FAC injection ... -
Fate and location of Vibrio anguillarum in tissues of artificially infected ayu (Plecoglossus altivelis)
(Japanese Society of Fish Pathology, 1987)Ayu (Plecoglossus altivelis) were infected with Vibrio anguillarum by a water-born method. At 6, 12, 18, 36, 38-45 (moribund stage) and 48 h (dead) after infection, fish were sampled to determine the fate and location of ... -
Induced spawning of maturing milkfish (Chanos chanos Forsskal) with gonadotropin-releasing hormone (GnRH) analogues administered in various ways
(Elsevier, 1987)The response of mature female captive milkfish to mammalian and salmon gonadotropin-releasing hormone analogues (mGnRH-A and sGnRH-A) was investigated. Prior to spawning, six groups of three females received (1) 10–16 μg ... -
Maturation and spawning of Penaeus indicus using different ablation methods
(Elsevier, 1987)Wild immature Penaeus indicus females (11.5 ± 3.1 g body weight) were ablated by pinching, cautery or tying of one eyestalk, and stocked with control (unablated) females and males (9.2 ± 1.5 g) in a 12-m3 ... -
Studies on the causative organism of Oreochromis niloticus (Linnaeus) fry mortalities I. Primary isolation and pathogenicity experiments.
(Taylor & Francis, 1987)Oreochromis niloticus fry reared in 50 L aquaria at a density of 1,000 fry manifested mortalities of 15% daily. Afflicted two-week old fry exhibited darker pigmentation, emaciation lesions, and surface swimming. Parasites ... -
The effects of water hardness on the hatching and viability of silver carp (Hypophthalmichthys molitrix) eggs
(Elsevier, 1987)An investigation was conducted to establish water hardness concentration for optimum hatching of silver carp (Hypophthalmichthys molitrix) eggs. Eggs were incubated for 19 h at 26.5°C at six levels of water hardness: 100, ... -
Development of the digestive tract of milkfish, Chanos chanos (Forsskal): Histology and histochemistry
(Elsevier, 1987)The digestive tract of the newly hatched milkfish larva is a simple undifferentiated tube. Three days after hatching, differentiation of the esophagus begins with development of mucous-secreting cells. At this time, the ... -
Osmotic and chloride regulation in the hemolymph of the tiger prawn Penaeus monodon during molting in various salinities
(Springer Verlag, 1987)The effect of molting on osmotic and chloride concentrations in the blood of the prawn Penaeus monodon Fabricius (20±3 g) at various salinities was investigated. Prawns were obtained from ponds in Iloilo, Philippines, in ... -
Histopathology of the chronic soft-shell syndrome in the tiger prawn Penaeus monodon
(Inter Research, 1987)One of the disease problems that affect the production of tiger prawn Penaeus monodon Fabricius in brackish-water ponds is the chronic soft-shell syndrome, a condition in which the prawn shell is persistently soft for ... -
The economics of retarding milkfish growth for fingerling production in brackishwater ponds
(Elsevier, 1987)Two experiments were conducted to measure the economic viability of retarding milkfish growth (stunting) in brackishwater ponds. In the first experiment, 2-month-old fish were reared for 6 months in ponds with initial ... -
Occurrence and distribution of milkfish larvae, Chanos chanos off the western coast of Panay Island, Philippines
(Springer Verlag, 1987)The occurence and distribution of milkfish larvae (∼3–17 mm TL) off western Panay Island, Philippines are reported based on 594 plankton net tows made in April and May 1980. Forty-two tows yielded 44 larvae, together with ... -
Yolk and oil globule utilization and developmental morphology of the digestive tract epithelium in larval rabbitfish, Siganus guttatus (Bloch)
(Elsevier, 1987)The purpose of this study was to find out how yolk and oil globule absorption in Siganus guttatus proceed as the digestive tract develops, in order to determine the probable causes of early larval mortality. Yolk and oil ... -
The effects of temperature and starvation on the ultrastructure of the hepatocytes of seaperch fingerlings, Lates calcarifer (Bloch).
(Elsevier, 1987)The hepatocytes of seaperch fingerlings reared on trashfish at constant water temperatures of 20 and 35°C were examined through electron microscopy and compared with those of controls fed identical diet or deprived of food ... -
Acute nitrite toxicity and methemoglobinemia in juvenile milkfish (Chanos chanos Forsskal)
(Elsevier, 1987)Nitrite was about 55 times more toxic to milkfish juveniles in fresh water than in 16% brackish water: the 48-h median lethal concentrations were 12 mg NO2-N/l (95% confidence limit=7.4–19.6) and 675 mg ... -
Comparison of the silo and broadcast methods of applying organic fertilizer in milkfish, Chanos chanos (Forsskal), ponds
(Elsevier, 1988)The efficacy of the silo and broadcast methods of applying organic fertilizers in ponds for the production of pond-floor, microbenthic biological complex, a natural food source known as lablab, was tested in 1-ha ponds, ... -
Critical factors influencing survival and hatching of milkfish (Chanos chanos Forsskal) eggs during simulated transport
(Elsevier, 1988)The effects of loading density, length of transit time, temperature and salinity on milkfish (Chanos chanos Forsskal) eggs during simulated transport were examined. Rocking motion approximating conditions of transport of ... -
Spawning response of mature female sea bass, Lates calcarifer (Bloch), to a single injection of luteinizing hormone-releasing hormone analogue: effect of dose and initial oocyte size
(Blackwell Publishing, 1989)The effect of various doses of luteinizing hormone-releasing hormone analogue (LHRHa) ranging from 1 to 100 μg/kg body weight on the spawning response of mature female sea bass, Lates calcarifer (Bloch) was tested. A single ... -
Advancement of sexual maturation and spawning of sea bass, Lates calcarifer (Bloch), using pelleted luteinizing hormone-releasing hormone analogue and 17α-methyltestosterone.
(Elsevier, 1990)The ability of luteinizing hormone-releasing hormone analogue [(D-Ala6, Pro9-NEt)LHRH], 17α-methyltestosterone (MT), and their combination to advance gonadal maturation and spawning in captive sea ... -
A collecting gear for naturally-spawned milkfish (Chanos chanos Forsskal) eggs in circular floating net cages
(Elsevier, 1988)A collecting gear for naturally-spawned milkfish (Chanos chanos Forsskal) eggs in circular floating net cages is described. The gear has been shown to be effective in collecting large numbers of eggs. The collecting gear ... -
An inexpensive tag for short-term studies in milkfish (Chanos chanos Forsskal) and in seabass (Lates calcarifer Bloch)
(Blackwell Publishing, 1988)An opercular tag for marking adult milkfish (Chanos chanos Forsskal) and seabass (Lates calcarifer Bloch) is described. High tag retention and relatively low mortality rates were observed in adult fish handled two to ten ...
