Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
16
datasets available to search
ShareScore release 0.7.1
Dataset results
16 results for “Polygraphus”
Effects of log length on Polygraphus proximus attack
<p><em>Polygraphus</em> <em>proximus</em> Blandford (Coleoptera: Curculionidae: Scolytinae), a non-aggressive bark beetle, has caused mortality of <em>Abies</em> spp. in Western Siberia, Central Asia, European Russia as well as Japan. Removing dead trees (i.e. salvage logging) and thinning stands are considered one of the best practices to reduce the risk of bark beetle outbreaks. However, salvaging or removing dead and thinned trees requires significant effort. Thus, to determine whether cutting trees shorter would reduce <em>P</em>. <em>proximus</em> infestation, we exposed <em>A</em>.<em> sachalinensis</em> logs of various lengths on the ground in a forest stand. The attack density of <em>P</em>. <em>proximus</em> significantly decreased with shorter log lengths. It can be concluded that cutting into short logs and leaving them on the ground are effective practices to reduce the chance of <em>P</em>. <em>proximus</em> outbreaks after natural disturbances and thinning.</p>
FIGURE 6 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 6: Tarsonemus striatus n. sp., male: A – left leg I in dorsal view; B – left leg II in dorsal view.
FIGURE 3 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 3: Tarsonemus striatus n. sp., female: A – left leg I in dorsal view; B – left leg II in dorsal view.
FIGURE 2 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 2: DIC micrographs of Tarsonemus striatus n. sp. female: A – central part of prodorsal shield; B – central part of tergite C; C – central parts of tergites D and EF; D – pharynx; E – central part of posterior sternal plate; F – central part of anterior sternal plate.
FIGURE 4 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 4: Tarsonemus striatus n. sp., female: A – left leg III in ventral view; B – left leg IV in ventral view.
FIGURE 7 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 7: Tarsonemus striatus n. sp., male: A – left leg III in dorsal view; B – left leg IV in dorsal view.
FIGURE 8 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 8: DIC micrographs of Tarsonemus striatus n. sp. male: A – central part of prodorsal shield; B – central part of tergite CD; C – right part of posterior sternal plate.
FIGURE 11 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 11: SEM micrographs of Tarsonemus striatus n. sp. females, phoretic on four-eyed fir bark beetle, Polygraphus proximus: A – ventral view of the beetle with phoretic mite (arrow); B, C – detailed view.
Effects of log length on Polygraphus proximus attack
Open the record for dataset details and reuse information.
Number of gallery arms for oviposition by the tree-killing bark beetle Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae)
<p><em>Polygraphus</em> <em>proximus</em> Blandford (Coleoptera: Curculionidae: Scolytinae) is a non-aggressive monogynous bark beetle. It has caused mass mortality in fir (<em>Abies</em> spp.) forests in the past decade. Although gallery structures made by polygynous beetles may influence their reproductive success, the gallery structure and the number of eggs laid by the monogynous tree-killing bark beetle <em>P</em>. <em>proximus</em> have not been investigated in detail in the natural setting of their native range. We, therefore, investigated the length of mother galleries of <em>P</em>. <em>proximus</em> and the number of eggs oviposited by the beetles in relation to gallery systems with different numbers of arms in Japan. The number of eggs oviposited in two-armed galleries was significantly greater than that observed in one-armed galleries. Additionally, the length of one- or two-armed galleries with no oviposition was significantly shorter than that in galleries consisting of more than two arms. Our results suggest that the optimal number of arms in a gallery system (in terms of the number of eggs oviposited) was two.</p>
FIGURE 9 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 9: Tarsonemus striatus n. sp., larva: A – dorsum of the body; B – venter of the body.
FIGURE 5 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 5: Tarsonemus striatus n. sp., male: A – dorsum of the body; B – venter of the body
FIGURE 1 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 1: Tarsonemus striatus n. sp., female: A – dorsum of the body; B – venter of the body.
Distribution pattern of entry holes of the tree-killing bark beetle Polygraphus proximus
Open the record for dataset details and reuse information.
Number of gallery arms for oviposition by the tree-killing bark beetle Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae)
Open the record for dataset details and reuse information.
FIGURE 10 in A new species of Tarsonemus (Acari: Tarsonemidae) associated with the bark beetle, Polygraphus proximus (Coleoptera: Curculionidae: Scolytinae) from the Far East of Russia
FIGURE 10: Tarsonemus striatus n. sp., larva: A – right leg I in dorsal view; B – right leg II in dorsal view; C – right leg III in dorsal view.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.