Results 21 to 30 of about 214,215 (267)

Polyculture of tilapia (Oreochromis niloticus) and lemeduk (Barbonymus schwanenfeldii) in floating net cages as a strategy for utilizing natural food [PDF]

open access: yesE3S Web of Conferences, 2022
Polyculture is a sustainable aquaculture system because it can reduce environmental pollution and increase feeding efficiency. The purpose of this study was to analyze the performance of growth, biomass and food competition for tilapia as the main ...
Nurfadillah Nurfadillah   +2 more
doaj   +1 more source

Supplements to the generalized quantitative assessments of benthic macrofauna in the Far Eastern Seas and adjacent waters of the Pacific Ocean. Report 1. Regional features of distribution for biomass of fish

open access: yesИзвестия ТИНРО, 2016
Long-term information on mean annual biomass of the main taxa of bottom and demersal fishes on the shelf and upper continental slope (down to 2025 m) in the Far Eastern Seas and adjacent Pacific waters is summarized.
Vyacheslav P. Shuntov, Igor V. Volvenko
doaj   +1 more source

The Spatial Variation of Acoustic Water Column Data and Its Relationship with Reef-Associated Fish Recorded by Baited Remote Underwater Stereo-Videos off the Western Australia Coast

open access: yesJournal of Marine Science and Engineering, 2022
Spatially explicit information on coral fish species abundance and distribution is required for effective management. Nonextractive techniques, including echosounders and video census, can be particularly useful in marine reserves where the use of ...
Marcela Montserrat Landero Figueroa   +3 more
doaj   +1 more source

Land use, associated eel production, and abundance of fish and crayfish in streams in Waikato, New Zealand [PDF]

open access: yes, 1997
The density and biomass of fish and crayfish, and the production of eels, was compared among streams in native forest, exotic forest, and pasture. Populations were estimated by multiple-pass electroshocking at 11 sites in hill-country streams in the ...
Cairns D., Hicks B. J., Hopkins C. L.
core   +2 more sources

Comparison of different dietary sources of n-3 polyunsaturated fatty acids on immune response in broiler chickens [PDF]

open access: yes, 2020
The study aims to research the effects of varied dietary sources of n-3 polyunsaturated fatty acids (PUFA) on the immune response in broiler chickens with stress on natural killer (NK) cell activity. Diets supplemented with one of the four sources of n-3
Al-Khalaifah, H.   +4 more
core   +1 more source

Benthic grazing in a eutrophic river: cascading effects of zoobenthivorous fish mask direct effects of herbivorous fish [PDF]

open access: yesPeerJ, 2018
Benthic grazing strongly controls periphyton biomass. The question therefore arises whether benthic grazing could be used as a tool to reduce excessive growth of periphyton in nutrient-enriched rivers.
Madlen Gerke   +6 more
doaj   +2 more sources

The importance of habitat quality for marine reserve fishery linkages [PDF]

open access: yes, 2003
We model marine reserve - fishery linkages to evaluate the potential contribution of habitat-quality improvements inside a marine reserve to fish productivity and fishery catches.
Barbier, E B   +3 more
core   +1 more source

The Coral Reefs and Fishes of St. Brandon, Indian Ocean Archipelago: Implications for Sustainable Fisheries

open access: yesDiversity
Understanding the factors influencing the variability in the composition of fish assemblages is essential for bolstering the resilience of coral reef ecosystems, effective coral reef management and maintaining sustainable fisheries.
Melanie Ricot   +9 more
doaj   +1 more source

Vertical diel dynamic of fish assemblage associated with an artificial reef (Northern Adriatic Sea)

open access: yesScientia Marina, 2007
The vertical diel activity of a fish assemblage inhabiting the Senigallia artificial reef (northern Adriatic Sea, Italy) was evaluated from July to November 1996 using enhanced hydroacoustic techniques. Extensive seabed mapping of the area was done using
Antonello Sala   +2 more
doaj   +1 more source

Spatial Distribution and Abundance of Mesopelagic Fish Biomass in the Mediterranean Sea

open access: yesFrontiers in Marine Science, 2020
Mesopelagic fish, being in the middle of the trophic web, are important key species for the marine environment; yet limited knowledge exists about their biology and abundance.
Morane Clavel-Henry   +5 more
doaj   +1 more source

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