Browsing Sustainable aquaculture by Title
Now showing items 655-674 of 2402
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Effects of carbohydrate sources on a biofloc nursery system for whiteleg shrimp (Litopenaeus vannamei)
(2021)Type: Journal ArticleIn biofloc technology carbohydrate is added to stimulate the biofloc growth, the latter helps to improve water quality, reduce the need for water exchange and may serve as natural shrimp feed. The large diversity among ... -
The Effects of feed restriction and isolated or group rearing on the measurement of individual feed intake and estimation of feed conversion ratio in juvenile Nile Tilapia (Oreochromis niloticus) for selective breeding purposes
(2021)Type: Journal ArticleAccurately measuring the phenotype at the individual level is critical to the success of selective breeding programs. Feed efficiency is a key sustainability trait and is typically approached through feed conversion ratio ... -
Effects of rearing conditions on low temperature tolerance of Nile tilapia, Oreochromis niloticus, juveniles
(2004)Type: Conference ProceedingsThis paper summarizes the results of two experiments in which the effects of genotype, age, size, condition factor and diet (natural phytoplankton versus formulated protein pellets) on low-temperature tolerance of juvenile ... -
Effects of relatedness and inbreeding on reproductive success of Nile tilapia (Oreochromis niloticus)
(2009)Type: Journal ArticleIt is well established that progeny of inbred matings are less fit than those of outbred matings, and that inbred individuals suffer from reduced viability and fertility. Inbreeding can be avoided by dispersal of progeny ... -
Effects of some destructive fishing methods on coral cover and potential rates of recovery
(1997)Type: Journal ArticleEffects of fishing with explosives (blastfishing) and sodium cyanide and of anchor damage on live coral were investigated on a heavily exploited fringing reef in Boli-nao, Philippines from 1987 to 1990. A simple balance-sheet ... -
Effects of stocking density on production and economics of all-male tilapia (Oreochromis niloticus) culture in a rain fed rice-fish ecosystem
(2014)Type: Journal ArticleEffects of stocking density on the growth, production, and economics of all-male tilapia (Oreochromis niloticus) were investigated in a rain-fed rice-fish ecosystem for a period of 120 days. Fish were stocked at the rate ... -
Effects of supplementary feeds with different protein levels on growth and economic performances of Nile tilapia (Oreochromis niloticus) cultured in a rain-fed rice-fish ecosystem
(2017)Type: Journal ArticleThis study investigated the effects of supplementary feeds with different crude protein levels on the growth and economic performances of sex-reversed Nile tilapia (Oreochromis niloticus) reared in a rain-fed rice-fish ... -
Effects of two nitrogen fertilizers on water quality and hybrid tilapia performance in fish farms
(2010)Type: Journal ArticleThe purpose of the present study was to compare the effect of urea and ammonium nitrate as nitrogen fertilizer sources with mon superphosphate on water quality and the productive performance of hybrid tilapia fish in outdoor ... -
Effects of white spot disease and bio-security on shrimp farming in Bangladesh
(2016)Type: Journal ArticleShrimp culture is of central importance in Bangladesh, shrimp being the cash component of many smallholder, polyculture fish farming systems. Shrimp also contributes substantial income through exports. However, production ... -
Efficacy and safety of boric acid as a preventive treatment against Saprolegnia infection in Nile tilapia (Oreochromis niloticus)
(2019)Type: Journal ArticleSaprolegniosis is a worldwide fungal-like infection affecting freshwater fishes and their eggs. Reports show high mortalities and subsequent economic losses annually from Saprolegnia infections. Most therapeutants against ... -
Efficacy of prophylactic health products on shrimp (Penaeus Monodon) post larvae nursing in tanks
(2019)Type: Conference PaperThe objectives of the study were to assess the efficacy of commercial PHPs on specific pathogen free (SPF) shrimp (Penaeus monodon) post larvae nursing in tanks. -
Efficiency of African catfish Clarias gariepinus in controlling unwanted reproduction of Nile tilapia Oreochromis niloticus in low input production system
(2007)Type: Journal ArticleThe present experiment was conducted in twelve earthen ponds 2100-m2 at WorldFish Center research facility at Abbassa, Egypt, to assess the efficiency of African catfish (Clarias gariepinus) in controlling unwanted Nile ... -
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 ... -
Egypt Country Program: Achievement highlights under the implementation of the CGIAR Research Program on Fish Agri-Food Systems 2017-2021
(2021)Type: BriefThis brief highlights the major project achievements for the Egypt country program in line with the FISH Research Program strategic goals and indicators. The brief was produced taking as reference a series of key resources ... -
Egyptian aquaculture: expanding development plans
(1979)Type: Journal ArticleThe author discusses the development of aquacultural development in Egypt. -
El Proyecto Big Numbers
(2008)Type: BriefEl Big Numbers Project (“Proyecto Gran Números”) es un esfuerzo en conjunto entre la FAO, Banco Mundial y el WorldFish Center, y se desempeña en colaboración con contrapartes nacionales. El Proyecto esta financiado por ... -
Electrophoretic evidence for extensive hybrid gene introgression into commercial Oreochromis niloticus (L.) stocks in the Philippines
(1986)Type: Journal ArticleThe usefulness of isozyme and protein markers in identifying tilapia species and their hybrids is demonstrated Genetic characterization of Oreochromis niloticus populations from commercial farms, experimental stations, and ... -
Emerging Scientist: Laura Khor
Type: BlogLaura Khor, a WorldFish Research Fellow, earned her Master of Science in Aquaculture from Universiti Malaysia Sabah and is currently working on novel approaches to monitoring and mitigating disease outbreaks in aquaculture. ... -
Empirical equations for the estimation of natural mortality in Mediterranean teleosts
(1993)Type: Journal ArticleEmpirical relationships were established linking estimates of the instantaneous rate of natural mortality (M), the von Bertalanffy growth parameters, L sub( infinity ) (or W sub( infinity )) and K, and annual mean water ... -
Empirical relationships to estimate asymptotic length, length at first maturity and length at maximum yield per recruit in fishes, with a simple method to evaluate length frequency data
(2000)Type: Journal ArticleEmpirical relationships are presented to estimate in fishes, asymptotic length from maximum observed length (L<sub>max</sub>), length at first maturity (L<sub>m</sub>) from L, life span (tmax) from age at first maturity ...
