Results 61 to 70 of about 27,650 (249)

The stable isotopic composition of Daphnia ephippia reflects changes in δ¹³C and δ¹⁸O values of food and water [PDF]

Biogeosciences, 2015
The stable isotopic composition of fossil resting eggs (ephippia) of Daphnia spp. is being used to reconstruct past environmental conditions in lake ecosystems.
J. Schilder, C. Tellenbach, M. Möst, P. Spaak, M. van Hardenbroek, M. J. Wooller, O. Heiri   +6 more
doaj   +1 more source

Nanoplastics: Methods, Exposure and Effects on Domestic, Farm and Wild Animals

Journal of Applied Toxicology, EarlyView.
ABSTRACT Nanoplastics (NPs) are synthetic polymer particles ranging in size from 1 nm to 1 μm that have been identified as a major concern for ecosystems and organisms due to their plethora of negative effects. The aim of this review is to provide a comprehensive overview of the knowledge relating to exposure and effects of NPs in domestic (i.e., farm ...
B. De Felice, M. Bertazzo, A. F. Tabaran, M. Parolini, R. P. Popa, A. Pintea, L. J. Spicer, A‐L. Nagy, F. Caloni   +8 more
wiley   +1 more source

Inferring Deleterious-Mutation Parameters in Natural Daphnia Populations

Biological Procedures Online, 1998
Deng and Lynch (1, 2) proposed to characterize deleterious genomic mutations from changes in the mean and genetic variance of fitness traits upon selfing in outcrossing populations.
Deng Hong-Wen
doaj   +1 more source

Regional landscape differences lead to contrasts in the strength of environmental sorting among crustacean zooplankton metacommunities

Oikos, EarlyView.
Processes underlying metacommunity structuring are important for understanding species tracking of environmental change at a landscape scale. Species' functional traits more closely reflect their ecological roles than taxonomy, therefore, adopting a functional approach allows us a better understanding of metacommunity structuring.
Annabelle Fortin‐Archambault, Beatrix E. Beisner, Alison M. Derry   +2 more
wiley   +1 more source

The visual ecology of selective predation: Are unhealthy hosts less stealthy hosts?

Ecology and Evolution, 2021
Predators can strongly influence disease transmission and evolution, particularly when they prey selectively on infected hosts. Although selective predation has been observed in numerous systems, why predators select infected prey remains poorly ...
Nina Wale, Rebecca C. Fuller, Sönke Johnsen, McKenna L. Turrill, Meghan. A. Duffy   +4 more
doaj   +1 more source

Continental accumulation of fads2 copy numbers allows sticklebacks to thrive across a diversity of nutritional landscapes

Oikos, EarlyView.
Nutrients, including vital organic compounds, vary in availability across ecosystems, with the potential to act as a source of selection for traits that increase nutrient acquisition and biosynthesis. Compared to freshwaters, marine ecosystems are richer in the omega‐3 long‐chain polyunsaturated fatty acid (n‐3 LC‐PUFA) docosahexaenoic acid (DHA ...
Cornelia W. Twining, Cameron M. Hudson, Jernej Bravničar, Antonella Carosi, Gaël P. J. Denys, Philine G. D. Feulner, Žiga Fišer, Hanna Rosinger, Verena Saladin, Linda Zanella, Davor Zanella, Catherine L. Peichel, Blake Matthews   +12 more
wiley   +1 more source

Daphnia

, 2016
Daphnia (Ctenodaphnia) sp. (Figure 6) Material. Images provided by Cañellas-Boltà (Fig. 6); see Cañellas-Boltà et al. (2012). Unidentified record from Rano Raraku Lake sediment core, Easter Island, in Cañellas-Boltà et al. (2012: Fig. 3 n, Cladocera ephippia IBB- 98). Notes. Unknown Ctenodaphnia species. Small ephippium, length about 650µm, width 250µm
openaire   +2 more sources

Responses of a bacterial pathogen to phosphorus limitation of its aquatic invertebrate host [PDF]

, 2008
Host nutrition is thought to affect the establishment, persistence, and severity of pathogenic infections. Nutrient-deficient foods possibly benefit pathogens by constraining host immune function or benefit hosts by limiting parasite growth and ...
Ebert, Dieter, Frost, Paul C., Dieter Ebert, Smith, V. H., Frost, P. C., Smith, Val H., Val H. Smith, Dieter, Ebert, Paul C. Frost   +8 more
core   +1 more source

Intrapopulation Variability of Cladocerans (Cladocera, Daphniiformes) in Lake Baikal [PDF]

Журнал Сибирского федерального университета: Серия Биология, 2009
In lake Baikal (Eastern Siberia, Russia) cladocerans play an important role in the zooplankton of bays and coastal shallows. Populations of D. galeata Sars, 1863 and D.
Sergey I. Pitulko
doaj  

Mitogenome of Daphnia laevis (Cladocera, Daphniidae) from Brazil

Mitochondrial DNA. Part B. Resources, 2019
This study presents the first mitogenome of Daphnia laevis, a species that plays an important ecological role in Brazilian aquatic environments. The mitochondrion is 15,246 bp in size, with 13 protein-coding genes, 22 tRNAs genes, two rRNAs and d-loop ...
Marcela Martins Ribeiro, Susanne Facchin, Adriana Heloísa Pereira, Evanguedes Kalapothakis, Shaolin Xu, Bo-Ping Han, Henri J. Dumont, Arnola Cecília Rietzler   +7 more
doaj   +1 more source