WorldFish Repository: Recent submissions
Now showing items 2881-2900 of 5196
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Can nitrogen pollution from aquaculture be reduced?
(1998)Type: Journal ArticleNitrogen is essential for the normal growth of fish. It is an important ingredient in fish feed but is very expensive. There is evidence that nitrogen loading from feeding and metabolic activities of fish can cause pollution ... -
Preliminary studies of locomotion and burrowing by juvenile boring clam, Tridacna crocea
(1998)Type: Journal ArticlePreliminary experiments in Okinawa, Japan, revealed that survival of juvenile Tridacna crocea depends on the size ofthe pit in which it is placed and its locomotory behavior. Juvenile T. crocea, less than 20 mm in shell ... -
Transgene expressions in seabass (Lates calcarifer) following muscular injection of plasmid DNA: a strategy for vaccine development?
(1998)Type: Journal ArticleMuscular injection has become one of the direct methods for transferring foreign DNA into organisms. The technique has been recently introduced in the development of vaccines and gene therapy. Vaccine development, in ... -
Molecular probes and polymerase chain reaction (PCR) -based kits for diagnosis of shrimp diseases
(1998)Type: Journal ArticleTechnology for effective and fast diagnosis of animal diseases is essential for developing aquaculture management strategies. This paper reviews the conventional techniques for shrimp disease diagnosis and discusses the ... -
Promotion of substrate based microbial biofilm in ponds: a low cost technology to boost fish production
(1998)Type: Journal ArticleMicrobial biofilms have been found to increase fish production in ponds by increasing heterotrophic production through periphyton proliferation on available substrates. In this paper, the role of substrate based microbial ... -
Low cost breeding and hatching techniques for the catfish (Heteropneustes fossilis) for small-scale farmers
(1998)Type: Journal ArticleThe high demand for the stinging catfish (Heteropneustes fossilis) and declining wild stocks led the Centre for Aquaculture Research and Extension of India to look for methods for the culture of the species. This paper ... -
Effect of fishpond input on pond mud nutrient levels in integrated crop-fish culture resource recycling
(1998)Type: ReportThe success of aquaculture among small holder farmers in Malawi, depends on the use of the available on-farm resources. Commercial fish feeds are currently not available. Fish ponds open possibility for recycling of waste ... -
Effect of transportation stress on hepatic glycogen of Oreochromis niloticus (L.)
(1998)Type: Journal ArticleOreochromis niloticus was subjected to transportation stress to investigate hepatic glycogen levels and mortality as indices of stress. Mortalities lasted up to three days after transportation, except in highly aerated ... -
Observations on gillnet catches of Kariba tilapia, Oreochromis mortimeri from Bumi Basin of Lake Kariba, Zimbabwe
(1998)Type: Journal ArticleGillnet catches of Oreochromis mortimeri (Trewavas) were studied in the Bumi Basin of Lake Kariba in 1988 and 1989. Total length (TL) was positively correlated with standard length (SL). The linear relationship between TL ... -
Efforts to save the marine environment in Tanzania
(1998)Type: Journal ArticleThe Tanzanian marine environment has been under threat for quite a long time now due to human activities. With the establishment of the Marine Parks and Reserve Act in 1994, several areas have been earmarked as marine ... -
The evolution of body muscle composition of the African catfish (Clarias gariepinus) (Burchell 1822)
(1998)Type: Journal ArticleChanges in body muscle composition of Clarias gariepinus were studied in fish reared from 1.08 g to 383 g mean body weight in a 201-day culture period. Changes in the amount of protein content, dry matter and ash free dry ... -
Making experiment station results more useful to African fish farmers
(1998)Type: Journal ArticleRather than using more or less ideal conditions for setting experimental controls, the use of conditions similar to those likely to be encountered by farmers should produce research results which are realistically achievable ... -
Policy imperatives for sustainable aquaculture development in Asia: lessons from Bangladesh, the Philippines and Thailand
(1998)Type: Conference PaperThe main objective of this paper is to identify an appropriate policy framework for the development of aquaculture and its contribution to overall economic development. The second section of this paper examines the performance ... -
Integrated poultry-fish farming: a way to increase productivity benefits
(1998)Type: Book ChapterThe integration of aquaculture with poultry results in a more efficient use of resources than is possible with aquacul-ture farming alone. Other benefits of diversification include a reduction in the risk of total crop ... -
Polyculture of carps in integrated broiler-cum-fishfarming systems
(1998)Type: Book ChapterA study was undertaken to determine fish species combinations that would result in optimum production levels in integrated broiler raising systems. Its objectives were: (i) to evaluate the production potential of fish in ... -
The potential for crop rotation in controlling diseases in shrimp culture
(1998)Type: Journal ArticleThe use of antibiotics and other chemicals in controlling shrimp pathogens become ineffective as the strains grow more resistant to these chemicals. Moreover, the bacterial pathogen (Vibrio harveyi) produced biofilm coating ... -
Length-weight relationship of fishes from coral reefs and lagoons of New Caledonia: an update
(1998)Type: Journal ArticleLength-weight relationships of 316 reef and lagoon fish from New Caledonia (SW Pacific Ocean) belonging to 68 families are computed. A total of 43,750 individuals was used for this purpose. Fish were sampled by different ... -
A traditional floodplain fishery of the lower Amazon River, Brasil
(1998)Type: Journal ArticleThis paper describes fishing activities of households in four communities located in a floodplain lake system of the lower Amazon river. An average of 42 households were interviewed about their fishing activity on a monthly ... -
Marine fisheries of Karnataka State, India
(1998)Type: Journal ArticleThis contribution provides an overview of the marine capture fisheries off the coast of Karnataka State, India. It covers the main fisheries and fishing gears, production trends (by main species /groups and gears), assessment ... -
Availability of wild spat of the blacklip pearl oyster, Pinctada margaritifera, from 'open' reef systems in Solomon Islands
(1998)Type: Journal ArticleIn this paper, we report results from a 2-year sampling program to assess spatial and temporal variation in abundances of spat in Solomon Islands. In particular, we focus on the apparent characteristics of good sites for ...
