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427 results for “Ectoparasite”
FIGURE 17 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 17. Distribution of Tropostreptus spp. in the Udzungwa Mts. Map based on fig. 1 in Marshall et al. (2010).
FIGURE 15 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 15. Tropostreptus spp., gonopods, left telopodite isolated, anterior view. A: T. austerus, B: T. severus sp. nov., holotype. Scales 1 mm. atp = antetorsal process, bh = birdhead-shaped metaplical process, fl = telepodital flange, lpl = apicolateral proplical lobe, map = mesapical metaplical process, mpl = mesapical proplical lobe. A. Illum photo.
FIGURE 14 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 14. Tropostreptus austerus, gonopods, anterior view. The birdhead-shaped process of the right gonopod is misshapen; the basad-mesad direction of the antetorsal process is due to drying of the gonopods for scanning electron microscopy. Scale 0.5 mm.
FIGURE 8 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 8. Tropostretus spp., left gonopods, proplica, anterior view. A: T. hamatus, East Usambara Mts, B: T. hamatus, Udzungwa Mts., C: T. sigmatospinus sp. nov., D: T. microcephalus sp. nov., E: T. droides sp. nov., F: T. kipunji sp. nov., G: T. austerus, H: T. severus sp. nov.—not to scale. The apicolateral proplical lobes (apl) are marked with yellow stars.
FIGURE 13 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 13. Size of Tropostreptus sigmatospinus sp. nov. males, expressed as number of podous rings and midbody vertical diameter. Females reach higher diameters than males
FIGURE 11 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 11. Size of Tropostreptus hamatus males, expressed as number of podous rings and midbody vertical diameter. Females reach higher diameters than males.
FIGURE 12 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 12. Tropostreptus spp., gonopods, left telopodite isolated, anterior view. A: T. hamatus, B: T. sigmatospinus sp. nov. Scales 1 mm. atp = antetorsal process, bh = birdhead-shaped metaplical process, lpl = apicolateral proplical lobe, map = mesapical metaplical process, mpl = mesapical proplical lobe. A. Illum photo.
FIGURE 16 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 16. Distribution of Tropostreptus spp. Base map by permission of the Eastern Arc Mountains Conservation Endowment Fund.
FIGURE 10 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 10. Tropostreptus spp., tip of telopodite. A: T. austerus, B: T. microcephalus sp. nov.—Scales: 0. 02 mm.
FIGURE 6 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 6. Tropostreptus hamatus, first pair of male legs. A: oral aspect. B: latero-basal field of setae on right coxosternum. Scales 0.5 mm (A), 0.2 mm (B). pfp = prefemoral process.
FIGURE 7 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 7. Tropostretus spp., gonopods, anterior view. A: T. hamatus, East Usambara Mts, B: T. hamatus, Udzungwa Mts., left telopodite missing, C: T. sigmatospinus sp. nov., D: T. microcephalus sp. nov., E: T. droides sp. nov., F: T.kipunji sp. nov. Scales 0.5 mm. atp = antetorsal process, bh = birdhead-shaped metaplical process, lpl = apicolateral proplical lobe, map = mesapical metaplical process, mp = metaplica, mpl = mesapical proplical lobe, pp = proplica, px = paracoxite, st = sternum, tlp =telopodite.
FIGURE 18 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 18. Rickia gigas on Tropostreptus millipedes. A: heavy infection of the long-celled type on anterior legs of a T. austerus male, B: Two thalli of the short-celled type on posterior margin of body ring of a T. austerus female; the 'feet' of the thalli are seen as (relatively) large black dots, the base of the numerous secondary appendages as tiny dark spots along the margins of the hyaline primary appendages, C: a pair of immature long-celled thalli on the ventral part of an anterior body ring of a T. hamatus (Scanning electron micrograph). Scales 1 mm (A), 0.1 mm (B), 0.01 mm (C). A, B: A. Illum photo.
FIGURE 5 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 5. Details of non-gonopodal morphology. A–C: ventral party of body rings, A–B: Tropostreptus hamatus, A: external view, showing touching posterior pleurotergal lobes, B: internal view, showing overlapping posterior pleurotergal lobes, C: Dendrostreptus macracanthus (Attems, 1914) for comparison, external view, showing separated posterior pleurotergal lobes. D–F: Tropostreptus hamatus. D: detail of prozonal sculpture, showing fine furrows with enlarged cuticular scutes. E: limbus. F: male, midbody legs.—Scales 0.2 mm (A–C, F), 0.02 mm (D), 0.005 mm (E). pad = pads on postfemur and tibia, ppl = posterior pleurotergal lobe.
FIGURE 3. Tropostretus hamatus, specimens from E. Usambara Mts. A in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 3. Tropostretus hamatus, specimens from E. Usambara Mts. A: male, B: female. Scales 1 mm. Notice produced antero-ventral corner of collum in male (arrow). A. Illum photo.
FIGURE 4. Tropostreptus spp., mouthparts. A in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 4. Tropostreptus spp., mouthparts. A: T. droides sp. nov., left mandibular gnathal lobe, dorsal/anterior view, B: T. kipunji sp. nov., right mandibular gnathal lobe, mesal view. C: T. hamatus, male, gnathochilarium and right mandible, oblique ventral view.—Scales 0.1 mm. me = mentum, mf = molar furrow, msl = mandibular stipital lobe, od = odontomere, pl = pectinate lamellae, pm = prementum, ps = psectromere, se = sectile edge.
FIGURE 2 in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 2. Size of Tropostreptus males, expressed as number of podous rings and midbody vertical diameter. Females reach higher diameters than males. See Figs. 11 and 13 for details on T. hamatus and T. sigmatospinus sp. nov.
FIGURE 1. Tropostreptus hamatus, live specimens. A in A new East African genus of spirostreptid millipedes (Diplopoda, Spirostreptida, Spirostreptidae), with notes on their fungal ectoparasite Rickia gigas
FIGURE 1. Tropostreptus hamatus, live specimens. A: pink-legged specimen (East Usambara Mts), S. Kuhlmann photo. B: a copulating pair of the pink-legged form, S. Kuhlmann photo, C: darker, dark-legged specimen (Udzungwa Mts.), N. Scharff photo.
Fig. 1 in First Record of the Ectoparasitic Beaver Beetle,Platypsyllus castorisRitsema (Coleoptera: Leiodidae: Platypsyllinae), in New Jersey, U.S.A.
Fig. 1. Ventral view of Platypsyllus castoris taken from a beaver near Hyper Humus, Newton, Sussex Co., NJ.
Raw data for the study titled "Fungal ectoparasites increase winter mortality of ladybird hosts despite limited effects on their immune system"
<p>Winter represents a challenging period for insects inhabiting temperate regions. A plethora of studies have investigated how abiotic environmental conditions such as temperature affect insect overwintering success. However, only a few studies have focused on biotic factors and the mechanisms affecting the overwintering performance of insects. Here, we investigated the effects of the parasitic fungus <em>Hesperomyces virescens</em> on the overwintering performance and immune system functioning of the invasive ladybird <em>Harmonia axyridis</em>. Winter survival was significantly lower for infected than for uninfected beetles. Body mass loss during overwintering tend to be higher for infected individuals compared to uninfected ones and for larger beetles. In addition, parasitic infection reduced post-winter longevity without food in male but not female ladybirds. Total haemocyte and protein concentration as well as antimicrobial activity against <em>Escherichia coli</em> significantly decreased during ladybird overwintering. However, haemolymph parameters were only poorly affected by <em>Hesperomyces</em> infection, with the exception of antimicrobial activity against <em>Escherichia coli</em> that tended to be higher in infected ladybirds. Interestingly, none of the pre-winter haemolymph parameters were good predictors of ladybird winter survival. Overall, our results indicate that energy exhaustion unrelated to immune system challenge is the most probable explanation for increased overwintering mortality in infected beetles.</p>
FIGURES 9 in A new species of larval Caeculisoma (Acari: Erythraeidae: Callidosomatinae) ectoparasitic on insects from China and a revised generic diagnosis
FIGURES 9¯10 Caeculisoma penlineatus sp. nov., larva. 9, leg II, trochanter—genu; 10, leg II, tibia—tarsus.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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