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1,131 results for “oribatid mites”
Older lineages of oribatid mites in mountain ranges have broader geographic ranges and exhibit more generalistic traits
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Figure 3 in The first report on oribatid mites in tundra belts of the Lovozersky Mountains on the Kola Peninsula, Russia
Figure 3 Discriminant (canonical) function analysis of relative abundance of oribatid mites in ex-
Figure 1 in The first report on oribatid mites in tundra belts of the Lovozersky Mountains on the Kola Peninsula, Russia
Figure 1 The location of the study plots in the Lovozersky Mountains (indicated by the arrow).
Figure 5 in Taxonomic contribution to the knowledge of the oribatid mite genus Orbiculobates (Acari, Oribatida, Plasmobatidae)
Figure 5. Orbiculobates bicornutus sp. nov. (adult) – Dorsal view (exuvial scalps not shown).
FIGURE 1 in Allogalumna rugata, a new species of oribatid mite from China (Acari, Oribatida, Galumnidae)
FIGURE 1: Allogalumna rugata n. sp. (female): A – dorsal view; B – ventral view (legs not shown). Scale bar 100 µm.
FIGURE 4 in Allogalumna rugata, a new species of oribatid mite from China (Acari, Oribatida, Galumnidae)
FIGURE 4: Allogalumna rugata n. sp. SEM micrographs of adult, macerated in lactic acid, some cero-tegument removed, some of the setae are broken. A – detail of prodorsum in dorsal view; B – bothridial seta and part of pteromorph; C – inter-lamellar seta; D – adanal seta; E – detail of genital plates; F – detail of anal plates.
FIGURE 2 in Allogalumna rugata, a new species of oribatid mite from China (Acari, Oribatida, Galumnidae)
FIGURE 2: Allogalumna rugata n. sp. (female): A – dorso-lateral view of prodorsum; B – posterior view of notogaster; C – pteromorph; D – subcapitulum; E – bothridial setae; F – palp; G – chelicera. Scale bar: (A-C) 100 µm, (D-G) 50 µm.
FIGURE 3 in Allogalumna rugata, a new species of oribatid mite from China (Acari, Oribatida, Galumnidae)
FIGURE 3: Allogalumna rugata n. sp. SEM micrographs of adult, macerated in lactic acid, some cero-tegument removed, some of the setae are broken. A – dorsal view; B – ventral view; C – lateral view.
Data from: New perspectives on soil animal trophic ecology through the lens of C and N stable isotope ratios of oribatid mites
<p>Knowledge of the trophic ecology of soil animals is important for understanding their high alpha diversity as well as their functional role in soil food webs and systems. In the last 20 years, the analysis of natural variations in stable isotope ratios (<sup>15</sup>N/<sup>14</sup>N, <sup>13</sup>C/<sup>12</sup>C) has revolutionized our view on soil animal trophic ecology. Here, we review the state of the art of the trophic ecology of a highly abundant and diverse soil animal taxon, oribatid mites (Oribatida), investigated by stable isotope analyses. The review is based on 25 papers reporting stable isotope data of 292 oribatid mite taxa from 30 different sites. Four main findings emerged. (1) Oribatid mites cluster into six trophic groups, i.e. moss feeders, lichen feeders, primary decomposers, fungal feeders/secondary decomposers, predators/scavengers and marine algal feeders, plus one additional group, which incorporates CaCO<sub>3</sub> in their cuticle for defence but still belongs to the fungal feeders/secondary decomposers group. (2) Of the 292 species studied 43.7% were classified as fungal feeders/secondary decomposers, 27.0% as primary decomposers and 15.7% as predators/scavengers, only few species include CaCO<sub>3</sub> into their skeleton (6.1%), feed on lichens (4.9%), mosses (2.1%) or marine algae (0.7%). (3) In about one-third of the species studied the trophic niche was constant or varied little between sites or habitats, but in two-thirds of the species, their trophic niche varied between habitats, with some species even shifting trophic levels, indicating trophic plasticity. (4) When aggregated at higher taxonomic level oribatid mite species clustered in only three instead of six trophic groups. This indicates that species within the same high-level taxon often belong to different trophic groups, for example, because feeding habits evolved convergently. Therefore, to accurately reflect the trophic ecology of oribatid mites their stable isotope signatures need to be analysed at the species level. However, stable isotope analyses also have limitations, e.g. feeding on bacteria and fungi cannot be separated, and the same is true for feeding on ectomycorrhizal and arbuscular mycorrhizal fungi. Other methods such as fatty acid, amino acid and molecular gut content analyses as well as microbiome analyses may complement stable isotope studies and resolve oribatid mite trophic niche differentiation at a higher resolution. This will contribute to a better understanding of the local coexistence of large numbers of species in soil. Finally, we provide perspectives on how to integrate microarthropods into soil food webs using stable isotope and other methods allowing deeper insight into their<br>trophic structure.</p>
Figure 1 in New faunistical and taxonomic data on oribatid mites (Acari: Oribatida) of Ethiopia, with description of two new species of the superfamily Oripodoidea
Figure 1 Ethiopian collecting place ofPilobates wachtelin. sp. andZetorchella robertbeckin. sp.
Fig. 4 in A Study On The Feeding Biology Of Soil Oribatid Mite Papillacarus (Papillacarus) Elongatus (Acari, Lohmanniidae)
Fig. 4. Mouth parts of P. (P.) elongatus. a — chelicera; b — rutellum. Scale 50μm
Figs 25–26 in Oribatid Mites (Acari: Oribatida) From Venezuela, I. Microzetid Species
Figs 25–26. Schalleria csuzdii sp. n.: 25 = body in ventral view, 26 = podosoma in lateral view
Figs 23–24 in Oribatid Mites (Acari: Oribatida) From Venezuela, Ii. New Or Rare Species From Montane Forests
Figs 23–24. Arcozetes rotundatus sp. n. 23 = body in ventral view, 24 = body in lateral view
Figs 10–11 in Oribatid Mites From The Vohimana Reserve (Madagascar) (Acari: Oribatida) I.
Figs 10–11. Nanhermannia milloti (BALOGH, 1960) – variation of the prodorsal condyles
Figure 1 in Checklist of oribatid mites (Acari: Oribatida) of the Central Black Sea basin of Turkey with new records for the country
Figure 1. Map of study area with the points of data collection.
FIGURE 2 in Egg Number Varies With Population Density; A Study Of Three Oribatid Mite Species In Orchard Habitats In Egypt
FIGURE 2:: Average population densities of the three studied species as a function of sampling time. Means are given with their standard errors. For each vegetation type, means were taken over three different sites (cf. Fig. 1) and three replicate samples within a site.
FIGURE 1 in Egg Number Varies With Population Density; A Study Of Three Oribatid Mite Species In Orchard Habitats In Egypt
FIGURE 1: Map of Al-Gharbia Governate in Egypt, indicating the three sampling areas (Tanta, Al Mahalla Al Kobra and Kafr Al Zayat). The inset shows the location of Al-Gharbia in Egypt. In each area, three orchards were sampled four times in a year. The same three types of orchard were selected in each area. The distance between locations varies from 19 to 38 km; the distance between sites within one location is 1-2 km.
FIGURE 3 in Egg Number Varies With Population Density; A Study Of Three Oribatid Mite Species In Orchard Habitats In Egypt
FIGURE 3: Relationship between population density and fecundity of the three studied species. The data (pooled over three samples per site) are for all sites, vegetation types and seasons together.
FIGURE 4 in Additions to the Cuban oribatid mite fauna (Acari, Oribatida), including new records and descriptions of two new species from the genera Eupelops (Phenopelopidae) and Malaconothrus (Malaconothridae)
FIGURE 4: Eupelops fusiformis Ermilov n. sp., microscope images of dissected specimen: A – cerotegument in centro-dorsal part of notogaster; B – lamella, lamellar and interlamellar setae, lateral view; C – medio-distal part of bothridial seta; D – porose areas A3 and notogastral setal alveoli h1 and p1; E – notogastral seta p2; F – part of epimeral region on right side, including cerotegument, epimeral seta 3b, apodeme 2, sejugal apodeme, pedotectum II and part of circumpedal carina; G – medio-distal part of tarsus III, right, paraxial view. Scale bar 20 µm.
FIGURE 3 in Additions to the Cuban oribatid mite fauna (Acari, Oribatida), including new records and descriptions of two new species from the genera Eupelops (Phenopelopidae) and Malaconothrus (Malaconothridae)
FIGURE 3: Eupelops fusiformis Ermilov n. sp.: A – leg I, without tarsus, trochanter and basal part of femur, left, paraxial view; B – leg II, without tarsus and trochanter, left, paraxial view; C – leg III, without tarsus and tibia, left, antiaxial view; D – leg IV, left, antiaxial view. Scale bar 20 µm.
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