Results 61 to 70 of about 126,718 (330)

Changes in feeding biology of Nile tilapia, Oreochromis niloticus (L.), after invasion of water hyacinth, Eichhornia crassipes (Mart.) Solms, in Lake Victoria, Kenya [PDF]

open access: yes, 1999
Oreochrimis niloticus (L.) was introduced to Lake victoria in the 1950s. It remained relatively uncommon in catches until 1965, when the numbers began to increase dramatically.
Njiru, M.
core  

The impact of turbidity on foraging and risk taking in the invasive Nile tilapia (Oreochromis niloticus) and a threatened native cichlid (Oreochromis amphimelas)

open access: yesBehavioral Ecology and Sociobiology, 2020
Anthropogenic activity can increase water turbidity, changing fish behaviour by reducing visibility. The spread of invasive species is also facilitated by human activity, further increasing the pressure on native species.
Jonathan D B Wing   +2 more
semanticscholar   +1 more source

Performance of Oreochromis niloticus and Oreochromis andersonii in controlled laboratory conditions in Zambia

open access: yesAquaculture Reports, 2022
In the present study, two hatchery strains of Oreochromis niloticus and two of O. andersonii sourced from different hatcheries in Zambia were subjected to the same feeding and management regimes in a controlled indoor tank environment. All strains were stocked at a mean weight of 2.1 ± 0.01 g and harvested after 175 days.
Basiita, Rose K.   +7 more
openaire   +3 more sources

Integration of epigenetics into ecotoxicology: insights and fundamental research needs

open access: yesBiological Reviews, EarlyView.
ABSTRACT Epigenetics refers to heritable changes in genome function that occur without direct alterations to the DNA sequence. A multitude of environmental contaminants can influence the epigenetic marks of a genome. Changes of epigenetic marks including DNA methylation, histone modifications, and non‐coding RNAs can induce alterations at the gene ...
Albano Pinto   +3 more
wiley   +1 more source

Pengaruh Perbedaan Tadah Air Hujan dan Tadah Air Tawar terhadap Tingkat Pertumbuhan Ikan Nila (Oreochromis Niloticus) di Desa Randusanga Wetan Kabupaten Brebes

open access: yesJFMR-Journal of Fisheries and Marine Research
Ikan nila (Oreochromis niloticus) merupakan salah satu komoditas perikanan yang digemari masyarakat dalam memenuhi kebutuhan protein hewani karena memiliki daging yang tebal serta rasa yang enak. Ikan nila juga merupakan ikan primadona ekspor yang terus
Karina Farkha Dina   +4 more
doaj   +1 more source

UJI TOKSISITAS LETAL CR6+ TERHADAP IKAN NILA (OREOCHROMIS NILOTICUS)

open access: yesJurnal Ilmu Pertanian Indonesia, 2016
Chromium is a risk pollutant through their carcinogenic character non degradable by organisms and accumulate into the environment. The aims to find LC50-96h of chromium on test organism.
Nanik Mustikaning Tyas   +2 more
doaj   +1 more source

Fish diversity and composition of Tugwi Mukosi Dam, Zimbabwe's largest inland reservoir post impoundment

open access: yesAquaculture, Fish and Fisheries, 2021
The fish diversity and composition of Tugwi Mukosi Dam, Zimbabwe's largest inland reservoir was investigated in 2019 (post impoundment phase) after the reservoir filled in 2017.
Terence Magqina   +2 more
doaj   +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  

Occurrence and antibiotic susceptibility of fish bacteria isolated from Oreochromis niloticus (Nile tilapia) and Clarias gariepinus (African catfish) in Uganda

open access: yes, 2018
The intention of this study was to identify the bacterial pathogens infecting Oreochromis niloticus (Nile tilapia) and Clarias gariepinus (African catfish), and to establish the antibiotic susceptibility of fish bacteria in Uganda.
S. Wamala   +8 more
semanticscholar   +1 more source

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

open access: yesJournal 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   +7 more
wiley   +1 more source

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