Results 21 to 30 of about 469 (184)

Impact on Plankton Communities Following Abandonment of Rice Cultivation and Biotope Creation. [PDF]

open access: yesEcol Evol
This study clarified changes in plankton communities during the first year of fallow in long‐term cultivated paddy fields in Kyoto. These fields were in a fallow state, with no planting, cultivation, or fertilization occurring. When water was introduced at the same time of year as during active use and the fields were converted into biotopes, diversity
Nagano M, Teramoto R.
europepmc   +2 more sources

Evaluation of Yellow Mealworm (<i>Tenebrio molitor</i>) Larvae Meal as a Carbon Source in Biofloc System for Dwarf Crayfish (<i>Cambarellus montezumae</i>) Culture. [PDF]

open access: yesAquac Nutr
The aim of this study was to evaluate the use of Tenebrio molitor larvae meal as a carbon source in a biofloc system (BFT) to optimize the culture of C. montezumae. A trial was conducted for 24 weeks, 500 T. molitor larvae were reared with wheat bran as substrate, and hydration once a week; at the end, 9000 T.
Paredes-Chávez RP   +5 more
europepmc   +2 more sources

Molecular and morphological delimitation of species in Strombomonas (Euglenaceae) including a protocol for DNA isolation utilising a chelating resin

open access: yesTAXON, Volume 72, Issue 4, Page 733-750, August 2023., 2023
Abstract Although Strombomonas verrucosa has been the type of the genus name for almost 100 years, its lack of clear diagnostic traits has rendered morphological distinction from its congeners almost impossible. As such, a study was conducted combining previously unused morphological data (chloroplast characters) with molecular data (sequences of ...
Alicja Fells   +6 more
wiley   +1 more source

Comparative study of algal community in African sharptooth catfish (Clarias gariepinus, Burchell 1822) and Nile tilapia (Oreochromis niloticus, Linnaeus 1758) farming ponds

open access: yesAquaculture, Fish and Fisheries, Volume 3, Issue 2, Page 149-164, April 2023., 2023
In the fish farming station, algae specific richness varies according to the water collection point (rearing pond, evacuation canal and decantation pond). Algae contribute differentially to fish diets: biomass is mostly used by Nile Tilapia (herbivorous) than African catfish (omnivorous).
Saïdou Santi   +3 more
wiley   +1 more source

18S rDNA sequence–structure phylogeny of the Euglenophyceae (Euglenozoa, Euglenida)

open access: yesJournal of Eukaryotic Microbiology, Volume 70, Issue 2, March/April 2023., 2023
Abstract The phylogeny of Euglenophyceae (Euglenozoa, Euglenida) has been discussed for decades with new genera being described in the last few years. In this study, we reconstruct a phylogeny using 18S rDNA sequence and structural data simultaneously. Using homology modeling, individual secondary structures were predicted.
Antonia S. Rackevei   +2 more
wiley   +1 more source

A global review of problematic and pathogenic parasites of farmed tilapia

open access: yesReviews in Aquaculture, Volume 15, Issue S1, Page 92-153, February 2023., 2023
Abstract Over the past 80 years, tilapia have been translocated globally for aquaculture; active production is recorded in >124 countries. Of 7 million tonnes of tilapia produced in aquaculture, 79% is from 79 countries outside the natural range of tilapia.
Andrew P. Shinn   +15 more
wiley   +1 more source

Natural Biota’s Contribution to Cultured Aquatic Animals’ Growth in Aquaculture Cannot Be Ignored

open access: yesAquaculture Research, Volume 2023, Issue 1, 2023., 2023
The rapid expansion of the aquaculture industry is accompanied by high organic and nutrient loadings from formulated feeds. This leads to water deterioration and pathogenic microorganisms. Natural biota (e.g., bacteria, phytoplankton, zooplankton, and zoobenthos) in ponds form important parts of cultured aquatic animals’ diets.
Shiyu Jin   +14 more
wiley   +1 more source

Evaluation of the Water Quality Status and Pollution Load Carrying Capacity of Way Umpu River, Way Kanan District, Lampung Province, Indonesia, Based on Land Use

open access: yesInternational Journal of Ecology, Volume 2023, Issue 1, 2023., 2023
This research aims to evaluate the water quality status and pollution load‐carrying capacity of the Way Umpu River based on land use. This was carried out using the survey method by directly measuring the river water debit, pH, temperature, and dissolved oxygen (DO) on‐site, taking the water sample to analyze the parameters of water quality such as ...
Tugiyono Tugiyono   +6 more
wiley   +1 more source

Food niches of planktonic rotifers: Diversification and implications

open access: yesLimnology and Oceanography, Volume 67, Issue 10, Page 2218-2251, October 2022., 2022
Abstract The diverse diets of common planktonic rotifers are described in detail from field and laboratory observations and experiments. Also considered are methodological approaches, rotifer feeding mechanisms, and the availability in natural waters of less well‐known food items (detritus, picoplankton, protozoans).
John J. Gilbert
wiley   +1 more source

New records of Phacus and Monomorphina taxa (Euglenophyta) for Thailand

open access: yesPolish Botanical Journal, 2014
Abstract The diversity of Phacus and Monomorphina (Euglenophyta) from northern Thailand was studied in various water bodies of Chiang Mai, Chiang Rai, Lamphun, Lampang and Phayao provinces. This paper presents 25 taxa of Phacus and 1 Monomorphina new for Thailand, including 3 Phacus taxa new for Southeast Asia.
Kritsana Duangjan   +2 more
openaire   +1 more source

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