Results 61 to 70 of about 76,615 (247)

Expression of corticoid‐regulatory genes in the gills of Atlantic salmon (Salmo salar) parr and smolt and during salinity acclimation

open access: yesJournal of Fish Biology, EarlyView.
Abstract In teleost fishes, cortisol is the major corticoid and has both glucocorticoid and mineralocorticoid actions. However, how fish tissues discriminate between these distinct corticosteroid actions is unclear. In mammals, the major factors responsible for intracellular corticosteroid regulation are glucocorticoid receptors (grs) and the ...
Makoto Kusakabe   +4 more
wiley   +1 more source

Comparison of some traits of economic importance in tilapias (Orechromis niloticus and Sarotherodon galilaeus) with particular reference to their culture in Ghana [PDF]

open access: yes, 2005
This study was conducted to determine which of the two major tilapia species in freshwater capture fisheries in Ghana, Oreochromis niloticus or Sarotherodon galilaeus, is more suitable for breed improvement and pond culture.
Attipoe, F.Y.K.   +2 more
core  

Cold tolerance of selective breeding of Oreochromis niloticus and oreochromis aureus [PDF]

open access: yesEgyptian Journal for Aquaculture, 2011
Selected fish for higher growth rate from both O. niloticus and O. aureus were collected and subjected to challenge test for cold. In addition to, fish of both species collected from production ponds of Abbassa were used to compare the cold tolerance of fish. Fry of   similar age were grown under identical conditions. O.
Mahmoud Rezk, Ebtehag Kamel
openaire   +1 more source

‘It's not much, but it's honest work’: The status of environmental DNA analyses of fish biodiversity in southern Africa

open access: yesJournal of Fish Biology, EarlyView.
Abstract Environmental DNA (eDNA) biodiversity surveys have the power to transform the detection of species in natural environments, which is crucial for the conservation and management of freshwater, estuarine and marine environments. Globally, eDNA‐based analyses have increased significantly, with fishes being the most widely studied aquatic ...
Sophie von der Heyden
wiley   +1 more source

Digestive enzymes activities in Oreochromis niloticus fed diet supplemented with recombinant growth hormone

open access: yesJurnal Akuakultur Indonesia, 2016
The specific activity of the digestive enzymes, namely: pepsin, amylase, lipase, trypsin, and chymotrypsin were studied in Nile tilapia Oreochromis niloticus fed diet supplemented with recombinant Ephinephelus lanceolatus growth hormone (rElGH).
Apriana Vinasyiam   +2 more
doaj   +1 more source

Culture performance of Oreochromis niloticus and Sarotherodon galilaeus using similar management strategies [PDF]

open access: yes, 2001
Sarotherodon galilaeus and Oreochromis niloticus are 2 readily available fish species in Nigeria, often cultured interchangeably. The findings are presented of a comparative study conducted to provide information on their performance using similar ...
Jeje, C.Y.
core  

Oreochromis niloticus

open access: yes, 2018
{"references": ["Pavanelli CS, Graca WJ, Zawadzki CH, Britski HA, Vidotti AP, Avelino GS, Verissimo S. Fishes from the Corumba Reservoir, Paranaiba River drainage, upper rio Parana basin, State of Goias, Brazil. Check List. 2007; 3 (1): 58 - 64.", "Eschmeyer WN, Fricke R, van der Laan R, editors. Catalog of fishes: genera, species, references [Internet]
Ota, Renata Rúbia   +3 more
openaire   +1 more source

Histological characterisation of gonadal sex differentiation in Malabar red snapper (Lutjanus malabaricus) for aquaculture advancement

open access: yesJournal of Fish Biology, EarlyView.
Abstract The Malabar red snapper (Lutjanus malabaricus) is a high‐value tropical marine species receiving growing attention for aquaculture development in Singapore and Southeast Asia. At present, seed production relies primarily on uncontrolled mass spawning in sea cages, a practice that lacks consistency, biosecurity and control of genetic ...
Bing Liang   +8 more
wiley   +1 more source

Sex Reversal of Red Tilapia (Oreochromis sp.) by Larval Immersion using Aromatase Inhibitor

open access: yesJurnal Akuakultur Indonesia, 2007
This study was performed to verify the effect of red Nile tilapia (Oreochromis sp.) larval immersion using aromatase inhibitor (1,3-Diaza-2,4-Cyclopentadience) on percentage of male fish.
M. Agus Sudrajat, I.D. Astutik, H. Arfah
doaj   +1 more source

EFFECT OF SOME MAJOR ELEMENTS ON GROWTH PERFORMANCE AND BLOOD PARAMETERS IN FISH [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2018
he present experiment was conducted to determine the optimal source and level of phosphorus supplementation in commercial feeds with the highest growth rate and the lowest releasing in environmental and protect water quality of Nile Juveniles tilapia ...
Dena Abdel-Bary   +3 more
doaj   +1 more source

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