Selectivity of Oreochromis niloticus and O. aureus caught by trammel nets
نویسندگان
چکیده
منابع مشابه
Production of genetically male tilapia through interspecific hybridization between Oreochromis niloticus and O. aureus
This study was conducted to produce a high percentage of genetically male tilapia through interspecific hybridization between Nile tilapia, Oreochromis niloticus and Blue tilapia, O. aureus and evaluate sex ratio, productive performance and heterosis of the progeny produced. The results revealed that sex ratios of the progenies of (♀ O. aureus x ♂ O. niloticus) and (♀ O. niloticus x ♂ O. aureus...
متن کاملProduction of genetically male tilapia through interspecific hybridization between Oreochromis niloticus and O. aureus
This study was conducted to produce a high percentage of genetically male tilapia through interspecific hybridization between Nile tilapia, Oreochromis niloticus and Blue tilapia, O. aureus and evaluate sex ratio, productive performance and heterosis of the progeny produced. The results revealed that sex ratios of the progenies of (♀ O. aureus x ♂ O. niloticus) and (♀ O. niloticus x ♂ O. aureus...
متن کاملEffect of ^tocopherol Acetate on Fecundity and Reproductive Physiology of Oreochromis Niloticus and O. Aureus Broodstock
A was conducted to determine the effect of vitamin E, (a-tocopherol acetate a-TOH) supplementation on the fecundity and reproductive performance of Nile tilapia Oreochromis niloticus and O. aureus. R eproductive performance was assessed in the females, in the developing eggs and in the resultant offspring, in an attempt to determine the optimum nutrition for successful spawning of O. niloticus ...
متن کاملFormation of ring marks in stocked tilapia juveniles (Oreochromis aureus/O. niloticus) (Perciformes: Cichlidae).
Lake Metztitlán was dried up completely in the spring of 1998 and refilled in August of that year. In the period September-November, two cohorts of 1.6 million juveniles of a tilapia hybrid were stocked (Oreochromis aureus/O. niloticus), and monitored every month for one year. Since the date of birth of these juveniles was known, the analyses focused on whether the ring marks of the scales, sag...
متن کاملDietary Phosphorus Requirements of Juvenile Hybrid Tilapia (Oreochromis niloticus♀× O. Aureus♂) Fed Fishmeal-free Practical Diets
A growth trial was conducted to estimate the optimum levels of dietary phosphorus (P) for juvenile hybrid tilapia (Oreochromis niloticus × O. aureus) fed fishmeal-free practical diets. Hybrid tilapia (1.68 ± 0.08 g) were fed diets containing various levels (0.0%, 0.2%, 0.4%, 0.6%, 0.8% and 1.0%) of additional inorganic phosphorus for 10 weeks using two different sources of phosphorus:calcium di...
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ژورنال
عنوان ژورنال: Egyptian Journal of Aquatic Biology and Fisheries
سال: 2022
ISSN: ['1110-6131', '2536-9814']
DOI: https://doi.org/10.21608/ejabf.2022.249879