Results 51 to 60 of about 33,910 (252)

Effects of Acute Toxicity of Chlorpyrifos (EC 50%) and Associated Histological Alterations in Gills, Liver and Kidney of Mozambique Tilapia, Oreochromis mossambicus (Peters, 1852)

Indian Journal of Animal Research, 2020
Background: The pesticides are known to adversely affect the quality of water and create hazards for aquatic life that results in severe damage to non-target freshwater organisms including fish.
N. Jayakumar, A. Subburaj, P. Jawahar, A. Srinivasan, B. Ahilan   +4 more
semanticscholar   +1 more source

Comparative Proteomics of Salinity Stress Responses in Fish and Aquatic Invertebrates

PROTEOMICS, EarlyView.
ABSTRACT Fluctuating salinity is symptomatic of climate change challenging aquatic species. The melting of polar ice, rising sea levels, coastal surface and groundwater salinization, and increased evaporation in arid habitats alter salinity worldwide. Moreover, the frequency and intensity of extreme weather events such as rainstorms and floods increase,
Maxime Leprêtre, Jens Hamar, Monica B. Urias, Dietmar Kültz   +3 more
wiley   +1 more source

Association between polymorphism in the Prolactin I promoter and growth of tilapia in saline-water

Aquaculture Reports, 2015
Tilapias are a group of species with a variable tolerance to high salinity, which are cultured worldwide in fresh, brackish and seawater. Prolactin I (PRL I) is known as a key hormone in osmoregulatory physiological pathways.
Ariel Velan, Gideon Hulata, Micha Ron, Tatiana Slosman, Andrey Shirak, Avner Cnaani   +5 more
doaj   +1 more source

Freshwater fishes of the Waterberg aquatic ecoregion, South Africa: Diversity, taxonomic conflicts and conservation concerns

Journal of Fish Biology, EarlyView.
Abstract Southern Africa is a region denoted by both high levels of fish diversity, some of it cryptic and unrecognised by current taxonomy, and severely threatened freshwater ecosystems. The Waterberg, a key aquatic ecoregion of the greater Limpopo River basin in South Africa, represents an area with high terrestrial conservation value but is lacking ...
Darragh J. Woodford, Mandla Magoro, Wilbert T. Kadye, Martinus Scheepers, Yonela Sithole, Tadiwa I. Mutizwa, Tholoana Ntokoane, Albert Chakona   +7 more
wiley   +1 more source

Chemical communication in tilapia: A comparison of Oreochromis mossambicus with O. niloticus [PDF]

General and Comparative Endocrinology, 2014
In allopatric speciation species differentiation generally results from different selective pressures in different environments, and identifying the traits responsible helps to understand the isolation mechanism(s) involved. Male Mozambique tilapia (Oreochromis mossambicus) use urine to signal dominance; furthermore, 5β-pregnane-3α,17,20β-triol-3α ...
Tina Keller-Costa, Tina Keller-Costa, José Paulo da Silva, Vasco C. Mota, Vasco C. Mota, Adelino V.M. Canario, Peter C. Hubbard   +6 more
openaire   +4 more sources

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

Induction of Male Courtship Behavior by Olfactory Cues Released From Ovulating Female in the Medaka, Oryzias latipes

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 343, Issue 9, Page 1049-1059, November 2025.
ABSTRACT Chemical communication between males and females is important for successful reproduction of animals. The activation of male courtship behavior by female olfactory cues has only been demonstrated in a limited number of teleost species. In the present study, we showed that in the model animal medaka, courtship behavior in males are activated by
Yasunori Koya, Megumi Kodama, Tsukasa Maruyama, Yuki Kondo   +3 more
wiley   +1 more source

Toxicological Effects of Lufenuron on Antioxidant Defence in Grass Carp (Ctenopharyngodon idella)

Veterinary Medicine and Science, Volume 11, Issue 6, November 2025.
GRAPHICAL ABSTRACT Lufenuron exposure in grass carp disrupted antioxidant enzyme activities in a tissue‐specific manner, indicating oxidative stress. Superoxide dismutase and glutathione increased, whereas catalase and peroxidase showed organ‐dependent alterations, highlighting antioxidant enzymes as sensitive biomarkers for assessing ecotoxicological ...
Maria Saeed Khan, Abdul Ghaffar, Qudrat Ullah, Muhammad Farooq, Habiba Jamil, Muhammad Israr, Ibrahm A. Alhidary   +6 more
wiley   +1 more source

Sexual dimorphism and allometry of external morphology in Oreochromis mossambicus [PDF]

Journal of Fish Biology, 1995
Sexual dimorphism in growth of conventional morphometric characters was investigated in juveniles and young adults (size range: 31 to 91 mm) of Oreochromis mossambicus. A closely associated set of traits was identified that shows sexually dimorphic growth, which was positively allometric in the males.
Oliveira, Rui Filipe, Almada, Vítor Carvalho   +1 more
openaire   +3 more sources