Results 11 to 20 of about 74,500 (289)

Speciation in Daphnia [PDF]

open access: yesMolecular Ecology, 2020
AbstractThe microcrustaceanDaphniais arguably one of the most studied zooplankton species, having a well understood ecology, life history, and a relatively well studied evolutionary history. Despite this wealth of knowledge, species boundaries within closely related species in this genus often remain elusive and the major evolutionary forces driving ...
Tiffany A. Chin, Melania E. Cristescu
openaire   +2 more sources

Evaluation of the pollution pressures posed by groups of chemicals on British riverine invertebrate populations. [PDF]

open access: yesBiol Rev Camb Philos Soc
ABSTRACT Globally, rivers receive a diverse range of chemicals, including metals, pesticides, persistent organic pollutants, petrochemicals, human and veterinary pharmaceuticals and personal care products. However, the extent to which these different chemical groups affect riverine invertebrate communities is not well defined.
Poyntz-Wright IP, Harrison XA, Tyler CR.
europepmc   +2 more sources

Visibility as a factor in the copepod-planktivorous fish relationship

open access: yesScientia Marina, 2005
The question we treat in this contribution is whether or not planktivorous fish can use the motion pattern of planktonic copepods to distinguish these animals from other suspended particles in the water.
J. Rudi Strickler   +5 more
doaj   +1 more source

Experimental evolution reveals high insecticide tolerance in Daphnia inhabiting farmland ponds [PDF]

open access: yes, 2015
Exposure of nontarget populations to agricultural chemicals is an important aspect of global change. We quantified the capacity of natural Daphnia magna populations to locally adapt to insecticide exposure through a selection experiment involving ...
Agra   +36 more
core   +2 more sources

Nocardioides daphniae sp. nov., isolated from Daphnia cucullata (Crustacea: Cladocera) [PDF]

open access: yesINTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, 2008
A Gram-positive, rod-shaped or coccoid, yellow-pigmented bacterial strain, D287(T), was isolated from the water flea Daphnia cucullata (Crustacea: Cladocera) collected from Lake Balaton in Hungary. Phylogenetic analysis on the basis of 16S rRNA gene sequence comparisons revealed that the strain represented a distinct lineage within the cluster of the ...
Erika M, Tóth   +5 more
openaire   +2 more sources

Ecological and morphological characteristics of Daphnia O. F. Müller, 1785 (Crustacea,Cladocera) genus in Ukrainian Roztochia

open access: yesБіологічні студії, 2014
Daphnia is a genus of small, aquatic, crustaceans, belonging to the Daphniidae fa­mi­ly. Daphnia are important components of freshwater food chains.
O. Ivanets
doaj   +1 more source

Modeling Vortex Swarming In Daphnia [PDF]

open access: yesBulletin of Mathematical Biology, 2006
24 pages including 11 multi-part figs. Major revisions compared to version 1, new results on transition from uncorrelated rotation to vortex swarming. Extended discussion.
Mach, Robert, Schweitzer, Frank
openaire   +5 more sources

Food quantity and quality shapes reproductive strategies of Daphnia

open access: yesEcology and Evolution, 2022
In freshwater environments, one of the challenges aquatic grazers face are periods of suboptimal food quantity and quality. In a life table experiment, the effects of food quantity (a gradient of algae concentration) and quality (a diet of cyanobacteria)
Anna Bednarska
doaj   +1 more source

Genetic Diversity, Heteroplasmy, and Recombination in Mitochondrial Genomes ofDaphnia pulex,Daphnia pulicaria, andDaphnia obtusa

open access: yesMolecular Biology and Evolution, 2022
AbstractGenetic variants of mitochondrial DNA at the individual (heteroplasmy) and population (polymorphism) levels provide insight into their roles in multiple cellular and evolutionary processes. However, owing to the paucity of genome-wide data at the within-individual and population levels, the broad patterns of these two forms of variation remain ...
Zhiqiang Ye   +6 more
openaire   +2 more sources

Zooplankton as ecosystem indicators and their effects on eutrophication in Lake Arekit (Ethiopia) – implication for freshwater habitat management

open access: yesJournal of Freshwater Ecology, 2023
This paper examines the zooplankton abundance and composition along with various environmental factors in Lake Arekit – a shallow freshwater habitat in Ethiopia’s rift valley system. Zooplankton samples and specific environmental data were collected by a
Yirga Enawgaw   +3 more
doaj   +1 more source

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