Results 41 to 50 of about 13,419 (196)

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

Journal 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, Takashi Yada, Graham Young, Amy M. Regish, Stephen D. McCormick   +4 more
wiley   +1 more source

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

Egyptian 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

Journal 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

Jurnal 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, Muhammad Agus Suprayudi, , Alimuddin   +2 more
doaj   +1 more source

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

Arab 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, H. Khattab, M. Amer, A. Hashim   +3 more
doaj   +1 more source

Oreochromis niloticus

, 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, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da, Pavanelli, Carla Simone   +3 more
openaire   +1 more source

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

Journal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert, João C. Maicrovicz, Daniel R. Blanco, Denise Lange, Carla S. Pavanelli, Heleno Brandão   +5 more
wiley   +1 more source

Morphometric Characterization of Oreochromis Species Habitating in Jipe Lake, Kenya

Aquaculture, Fish and Fisheries
Lake Jipe, a shared resource at the Kenya‐Tanzania border, has experienced significant fish introductions impacting its fish diversity. Despite these changes, the variations in morphometric characters of fish in the lake have not been documented ...
Elizabeth Nyauchi, Gerald Kwikiriza, Harald Meimberg, Geoffrey Ong'ondo   +3 more
doaj   +1 more source

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

Jurnal 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

First attempt at using a synthetic diet in short‐lived killifish, a vertebrate model of ageing

Journal of Fish Biology, EarlyView.
Abstract Diet standardization of model organisms is crucial for experimental consistency and repeatability in laboratory research, yet laboratory fish often lack species‐specific, open‐formula standardized diets. This study aims to address this gap by testing the effect of macronutrient content on the performance of Nothobranchius furzeri, an ...
Jakub Žák, Milan Vrtílek
wiley   +1 more source