Do oribatid mites (Acari: Oribatida) show a higher preference for ubiquitous vs. specialized saprotrophic fungi from pine litter?

Koukol, Ondřej; Mourek, Jan; Janovský, Zdeněk; Černá, Kristýna

doi:10.1016/j.soilbio.2009.02.018

Cited by 27 publications

(15 citation statements)

References 33 publications

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“…Thus, it is not surprising that OM content affects juvenile production as with increased OM in the litter and humus layers, an increase in fungal biomass, a primary food source for the mites, would also occur. Despite being provided with a constant laboratory food source during the test, food preferences for certain fungal species are known to exist (e.g., [37][38][39][40]) and, if present in the test soils, could contribute to an increase in energy resources and reproduction. However, this does not explain why reproduction was lower in some of the other organic forest soil horizons (e.g., SK05-1-LFH, SK05-2-LFH; Fig.…”

Section: Discussionmentioning

confidence: 99%

Oribatid mites in soil toxicity testing—the use ofOppia nitens(C.L. Koch) as a new test species

Princz

Behan‐Pelletier

Scroggins

et al. 2010

Enviro Toxic and Chemistry

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Few soil invertebrate species are available for the toxic assessment of soils from boreal or other northern ecozones, yet these soils cover the majority of Canada's landmass as well as significant portions of Eurasia. Oppia nitens (C.L. Koch) is an herbivorous and fungivorous oribatid mite found in soil throughout Holarctic regions, including Canada. Soil tests using O. nitens were performed using 15 different forest soil types and horizons to investigate test variability in adult survival and reproduction. Adult survival (86.1 +/- 1.1%) was consistent across soil types, with a coefficient of variation (CV) of 15%. However, reproduction varied significantly, ranging from 2.9 (+/-1.1) to 86.2 (+/-11.7) individuals, with a corresponding CV of 118 and 30%, respectively. Of the soil factors assessed (NH(3), NO(3), pH, phosphorus [P], organic matter content (OM), carbon:nitrogen (C:N), sand, silt, clay, and sodium adsorption ratio), soil organic matter (OM) explained 68% of the variation observed for reproduction. Increasing the OM using Sphagnum sp. peat moss resulted in optimal reproduction at 7% OM (8% peat content) with the lowest variability (CV of 20%). When assessing the toxicity of a reference chemical, boric acid, the effect of peat amendment reduced lethality to adults with no observable difference on reproduction. The use an age-synchronized culture reduced the test variability for reproduction relative to the use of unsynchronized cultures. Oppia nitens is a good candidate species for a standardized test design, with adult survival easily assessed in a relatively simple design. A long-term reproduction test with O. nitens will require the use of a synchronized population and, on occasion, OM amendment when testing soils with low organic matter content.

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Section: Discussionmentioning

confidence: 99%

Oribatid mites in soil toxicity testing—the use ofOppia nitens(C.L. Koch) as a new test species

Princz

Behan‐Pelletier

Scroggins

et al. 2010

Enviro Toxic and Chemistry

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“…Another aspect of fungal community dynamics–functioning relationships that has not been included in models, so far, is the impact of grazing by invertebrates. Fungivory is common among soil invertebrates (Faber, ), and selective grazing of invertebrate species on specific decomposer fungal species has been demonstrated (Koukol et al ., ; Crowther et al ., ). Selective grazing can result in shifts in saprotrophic fungal community composition as well as in changes of decomposition‐related enzyme activities and nutrient fluxes (Crowther et al ., , b; Tordoff et al ., ).…”

Section: Community Level Aspects Of Fungal Decompositionmentioning

confidence: 99%

A thready affair: linking fungal diversity and community dynamics to terrestrial decomposition processes

et al. 2013

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Filamentous fungi are critical to the decomposition of terrestrial organic matter and, consequently, in the global carbon cycle. In particular, their contribution to degradation of recalcitrant lignocellulose complexes has been widely studied. In this review, we focus on the functioning of terrestrial fungal decomposers and examine the factors that affect their activities and community dynamics. In relation to this, impacts of global warming and increased N deposition are discussed. We also address the contribution of fungal decomposer studies to the development of general community ecological concepts such as diversity-functioning relationships, succession, priority effects and home-field advantage. Finally, we indicate several research directions that will lead to a more complete understanding of the ecological roles of terrestrial decomposer fungi such as their importance in turnover of rhizodeposits, the consequences of interactions with other organisms and niche differentiation.

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“…They also feed on other organisms such as algae, fungi, collembola and nematodes. Common mycophagous species include: Adoristes ovatus, Eniochthonius minutissimus, Eueremaeus silvestris, Nothrus silvestris, Oppiella subpectinata, Porobelba spinosa and Spatiodamaeus verticillipes (Mitchell and Parkinson 1976;Koukol, Mourek, Janovský, and Č erná 2009). Although there is little evidence of these organisms feeding on EPF, they are known to disperse them (Renker et al 2005).…”

Section: Bioticmentioning

confidence: 99%

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

Scheepmaker

Butt

2010

Biocontrol Science and Technology

118

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Entomopathogenic fungi being developed as biological control agents (BCAs) may have the potential to spread and become established in the environment. For registration purposes, the risks concerning their persistence have to be evaluated according to EU legislation which requires the decline of BCAs to acceptable background levels unless related risks are acceptable. In order to deal with this requirement, applicants of a BCA need to give information on its persistence and natural background levels. For risk assessors and registration authorities guidance on how to evaluate data on natural background levels of indigenously occurring species (0same species as the introduced BCA) is needed. For this purpose, an overview is presented on background levels of some indigenous fungi as well as persistence data of some applied fungal BCAs. Data were restricted to commerical species. It was found that for the species Metarhizium anisopliae, Beauveria bassiana and Beauveria brongniartii natural densities were relatively low and introduced strains of these fungi decreased gradually in time. Many factors were found in the literature, such as intrinsic, edaphic, biotic, climatic, and cultural factors, that could explain this decline.

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Do oribatid mites (Acari: Oribatida) show a higher preference for ubiquitous vs. specialized saprotrophic fungi from pine litter?

Cited by 27 publications

References 33 publications

Oribatid mites in soil toxicity testing—the use ofOppia nitens(C.L. Koch) as a new test species

Oribatid mites in soil toxicity testing—the use ofOppia nitens(C.L. Koch) as a new test species

A thready affair: linking fungal diversity and community dynamics to terrestrial decomposition processes

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

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