Results 61 to 70 of about 95,666 (273)

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

Oreochromis niloticus

Oreochromis niloticus (Linnaeus); Nile tilapia (Figure 2K) Remarks: Oreochromis niloticus, synonymized with Perca nilotica (Linnaeus) and Tilapia nilotica (Linnaeus), was a common catch across all sampling locations during the study. This species is widely distributed in freshwater habitats across West and Central Africa, with additional occurrences in
Oladipo, Segun Olayinka, Everett, Amaya, Atofarati, Olabisi Tawakalit, Smith, Kennedy K., Nneji, Ifeanyi C., Adelakun, Kehinde Moruf, Nneji, Lotanna Micah   +6 more
openaire   +2 more sources

Predictions of fish yields and the status of the Kainji Lake fishery, 1998 [PDF]

, 1999
Length frequency data was collected for the 6 main species from the Kainji Lake fishery for up to 16 months. Growth parameters were estimated and used for virtual - population and length based cohort analysis.
Abiodun, J., du-Feu, T.A.
core  

The key mechanisms associated with the survival of Gulf toadfish, Opsanus beta, when in severe hypoxia

Journal of Fish Biology, EarlyView.
Abstract Florida's shallow seagrass beds experience daily diurnal fluctuations in environmental oxygen, leading to hypoxic episodes (PO2 < 2 mg L−1, ~6 kPa) that have increased in frequency and intensity in recent decades. The native Gulf toadfish (Opsanus beta) have been shown to employ a suite of adaptive cardiovascular, ventilatory and metabolic ...
Anastasiya Plotnikova, Isabelle R. Nelson, Shara Y. Sookhoo, Jacob M. Belkin, Vanessa P. Lima, Ross D. Bronfman Bunch, Athena M. Santomero, Sophia A. Santomero, Emily C. Rodriguez, Jayda K. Rodriguez, Kathleen M. Davis, Amanda J. Kaplan, Lucy M. Schwartz, Vivienne S. Clarke, Henry W. Sage, Ana I. Ruiz Criado, Kennedy T. Diamond, M. Danielle McDonald   +17 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

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

Individual identification of bony fishes using unique body markings: Implications and applications

Journal of Fish Biology, EarlyView.
Abstract The natural variation in animal body markings, such as spots, stripes and blotches, offers a powerful tool for researchers, conservationists, citizen scientists and resource managers to distinguish specific individuals within species. By building libraries of photo‐identified individuals, we can track and differentiate individuals over time ...
Katie Dunkley, Samuel R. Matchette, Cheuk Yu Hau, Christian Drerup, Roxanne B. Holmes, Yvonne Sadovy de Mitcheson, James E. Herbert‐Read   +6 more
wiley   +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

Effects of a saponin fraction extracted from Trigonella foenum-graecum L. and two commercially available saponins on sex ratio and gonad histology of Nile tilapa fry, Oreochromis niloticus (L.) [PDF]

, 2013
Over three million tonnes (t) of tilapia, mostly Nile tilapia (Oreochromis niloticus, L.), are produced annually making it the second most abundantly produced freshwater fish (FAO, 2010).
Abu-Lafi, S., Becker, K., Dweik, H., Focken, U., Francis, G., Kerem, Z., Levavi-Sivan, B., Qutob, M., Stadtlander, T.   +8 more
core