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.
23
datasets available to search
ShareScore release 0.9.0
Dataset results
23 results for “gregarines”
Fig. 7 in Ultrastructure and 28S rDNA Phylogeny of Two Gregarines: Cephaloidophora cf. communis and Heliospora cf. longissima with Remarks on Gregarine Morphology and Phylogenetic Analysis
Fig. 7. Relative rates of molecular evolution in long-branch apicomplexans: SSU rDNA (white columns) and LSU rDNA (black columns), calculated as ratio of the length of the current branch to average branch length of the non-long-branch apicomplexans (see the text for more explanations). Relative rates of LSU rDNA evolution are lower than those of SSU rDNA, especially in gregarines.
Fig. 2 in Ultrastructure and 28S rDNA Phylogeny of Two Gregarines: Cephaloidophora cf. communis and Heliospora cf. longissima with Remarks on Gregarine Morphology and Phylogenetic Analysis
Fig. 2. Light microscopy of the gregarine studied: free individuals (gamonts) of Cephaloidophora cf. communis (A, common light microsopy; B, DIC microscopy); a free gamont (C) and a syzygy (D) of Heliospora cf. longissima. Epimerite (ep), promerite (pr), deutomerite (de), septum between poto- and deutomerite (s1), and septum between proto- and epimerite (s2) are visible.
Fig. 1 in Ultrastructure and 28S rDNA Phylogeny of Two Gregarines: Cephaloidophora cf. communis and Heliospora cf. longissima with Remarks on Gregarine Morphology and Phylogenetic Analysis
Fig. 1. Layout of ribosomal operon fragment amplifications. Up- per part, schematic ribosomal operon with approximate positions of the direct and reverse primers used. Lower part, the amplified fragments of ribosomal DNA aligned with the ribosomal operon (above). Numbers indicate the length of the overlapping regions. Roman numerals denote the fragments discussed in this paper. SSU rDNA fragments analyzed previously by Rueckert et al. (2011b) have no numerical designations.
Figure 8 in Taxonomical studies of four new Aseptate Gregarine parasites belonging to the Genus Monocystis Stein, 1848 (Protozoa: Apicomplexa: Sporozoa) from an Oligochaete Host, Eutyphoeus orientalis (Annelida: Oligochaeta) of West Bengal, India
Figure 8. Monocystis csabai sp. nov. (Camera lucida drawings of different stages of life cycle) A. Trophozoite. B. Syzygy. C. Gametocyst D. Oocyst. Scales: A-C = 100µm; D = 10µm.
Figure 6 in Taxonomical studies of four new Aseptate Gregarine parasites belonging to the Genus Monocystis Stein, 1848 (Protozoa: Apicomplexa: Sporozoa) from an Oligochaete Host, Eutyphoeus orientalis (Annelida: Oligochaeta) of West Bengal, India
Figure 6. Monocystis satoi sp. nov. (Camera lucida drawings of different stages of life cycle) A-B. Trophozoite. C. Syzygy D. Gametocyst. E. Oocyst. Scales: A-D =100µm; E=10µm.
Figure 3 in Taxonomical studies of four new Aseptate Gregarine parasites belonging to the Genus Monocystis Stein, 1848 (Protozoa: Apicomplexa: Sporozoa) from an Oligochaete Host, Eutyphoeus orientalis (Annelida: Oligochaeta) of West Bengal, India
Figure 3. Monocystis indicus sp. nov. (Photomicrographs of different stages of life cycle) A. Trophozoite (white arrow – granulated endosarc). B. Syzygy. C. Gametocyst. D. Oocyst. Scales: A-C = 100µm, D = 10µm.
Figure 4 in Taxonomical studies of four new Aseptate Gregarine parasites belonging to the Genus Monocystis Stein, 1848 (Protozoa: Apicomplexa: Sporozoa) from an Oligochaete Host, Eutyphoeus orientalis (Annelida: Oligochaeta) of West Bengal, India
Figure 4. Monocystis indicus sp. nov. (Camera lucida drawings of different stages of life cycle) A. Trophozoite. B. Syzygy. C. Gametocyst. D. Oocyst. Scales: A-C =100µm; D = 10µm.
Figure 7 in Taxonomical studies of four new Aseptate Gregarine parasites belonging to the Genus Monocystis Stein, 1848 (Protozoa: Apicomplexa: Sporozoa) from an Oligochaete Host, Eutyphoeus orientalis (Annelida: Oligochaeta) of West Bengal, India
Figure 7. Monocystis csabai sp. nov. (Photomicrographs of different stages of life cycle) A. Trophozoite (white arrow- large rounded distinct nucleus); (black arrow- tapering pointed end). B. Syzygy. C. Gametocyst D. Oocyst. Scales: A-C = 100µm; D = 10µm.
Figure 1 in Taxonomical studies of four new Aseptate Gregarine parasites belonging to the Genus Monocystis Stein, 1848 (Protozoa: Apicomplexa: Sporozoa) from an Oligochaete Host, Eutyphoeus orientalis (Annelida: Oligochaeta) of West Bengal, India
Figure 1. Photomicrographs of different stages of the life history of Monocystis eutyphae sp. nov. obtained from the seminal vesicles of earthworm Eutyphoeus orientalis, A. Trophozoite(Black arrow - mucron); (white arrow - granulated endosarc). B. Syzygy. C. Gametocyst. D. Oocyst. Scales: A - C = 100µm; D = 10µm
Figure 3 in Description of three new species of Aseptate Gregarine, Monocystis von Stein, 1848 of Oligochaetes collected from Dhaka, Bangladesh
Figure 3. Monocystis hamidae sp. nov. (photomicrographs of different stages of the life cycle) A. Trophozoite; B. Gametocyst; C. Oocyst. Scale-bars. A-B, 100 µm; C, 10 µm.
Figure 5 in Description of three new species of Aseptate Gregarine, Monocystis von Stein, 1848 of Oligochaetes collected from Dhaka, Bangladesh
Figure 5. Monocystis ribbonae sp. nov. (photomicrographs of different stages of the life cycle) A. Trophozoite; B. Gametocyst; C. Oocyst. Scale-bars. A-B, 100 µm; C, 10 µm.
Figure 4 in Description of three new species of Aseptate Gregarine, Monocystis von Stein, 1848 of Oligochaetes collected from Dhaka, Bangladesh
Figure 4. Monocystis hamidae sp. nov. (camera lucida drawings of different stages of the life cycle) A. Trophozoite; B. Gametocyst; C. Oocyst. Scale-bars. A-B, 100 µm; C, 10 µm.
Figure 1 in Description of three new species of Aseptate Gregarine, Monocystis von Stein, 1848 of Oligochaetes collected from Dhaka, Bangladesh
Figure 1. Monocystis bangladeshensis sp. nov. (photomicrographs of different stages of the life cycle) A. Trophozoite; B. Gametocyst; C. Oocyst. Scale-bars. A-B, 100 µm; C, 10 µm.
Friend or foe? The apparent benefits of gregarine (Apicomplexa: Sporozoa) infection in the European earwig
<p>Data set supporting the publication "Friend or foe? The apparent benefits of gregarine (Apicomplexa: Sporozoa) infection in the European earwig" in the International Journal for Parasitology</p>
Gregarines modulate insect responses to sublethal insecticide residues
<p>Throughout their lifetime, insects face multiple environmental challenges that influence their performance. Gregarines are prevalent endoparasites in most invertebrates that affect the fitness of their hosts, but are often overlooked in ecological studies. Next to such biotic factors, a current common challenge is anthropogenic pollution with pesticides, which causes a major threat to non-target organisms that are readily exposed to lethal or sublethal concentrations. In a laboratory study, we investigated whether the presence of gregarines modulates the food consumption and life-history traits of a (non-target) leaf beetle species, Phaedon cochleariae, in response to sublethal insecticide exposure. We show that the larval food consumption of the herbivore was neither affected by gregarine infection nor sublethal insecticide exposure. Nevertheless, infection with gregarines led to a delayed development, while insecticide exposure resulted in a lower body mass of adult males and a reduced reproduction of females. Individuals exposed to both challenges suffered most, as they had the lowest survival probability. This indicates detrimental effects on the population dynamics of non-target insects infected with naturally occurring gregarines that face additional stress from agrochemical pollution. Moreover, we found that the infection load with gregarines was higher in individuals exposed to sublethal insecticide concentrations compared to unexposed individuals. To counteract the global decline of insects, the potential of natural parasite infections in modulating insect responses to anthropogenic and non-anthropogenic environmental factors should be considered in ecological risk assessment.</p>
Fig. 7. A in Apolocystis proventus sp. nov. (Apicomplexa: Monocystinae) a New Species of Aseptate Gregarine from Egyptian Earthworms: Pheretima californica and Pheretima elongata (Annelida: Oligochaeta)
Fig. 7. A single sporocyst, note the two small flat plugs (P), fresh preparation.
Gregarines modulate insect responses to sublethal insecticide residues
Open the record for dataset details and reuse information.
Fluctuating starvation conditions modify host-symbiont relationship between a leaf beetle and its newly identified gregarine species
<p class="MsoNormal"><span>Gregarines are ubiquitous endosymbionts in invertebrates, including terrestrial insects. However, the biodiversity of gregarines is probably vastly underestimated and the knowledge about their role in shaping fitness-related traits of their host in dependence of fluctuating environmental conditions is limited. Using morphological and molecular analyses, we identified a new gregarine species, <em>Gregarina cochlearium</em> sp. n., in the mustard leaf beetle, <em>Phaedon cochleariae</em>. Applying a full-factorial design, we investigated the effects of a gregarine infection in combination with fluctuating starvation conditions during the larval stage on the development time and fitness-related traits of adult beetles. Under benign environmental conditions, the relationship between gregarines and the host seemed neutral, as host development, body mass, reproduction and survival were not altered by a gregarine infection. However, when additionally exposed to starvation, the combination of gregarine infection and this stress resulted in the lowest reproduction and survival of the host, which points to a parasitic relationship. Furthermore, when the host experienced starvation, the development time was prolonged and the adult females were lighter compared to non-starved individuals, independent of the presence of gregarines. Counting of gregarines in the guts of larvae revealed a lower gregarine load with increasing host body mass under stable food conditions, which indicates a regulation of the gregarine burden in dependence of the host condition. Contrary, in starved individuals the number of gregarines was the highest, hence the already weakened host suffered additionally from a higher gregarine burden. This interactive effect between gregarine infection and fluctuating starvation conditions led to an overall reduced fitness of <em>P. cochleariae</em>. Our study emphasises the need to study endosymbionts as important components of the natural environment and to investigate the role of host-symbiont relationships under fluctuating environmental conditions in an evolutionary and ecological context.</span></p>
FIGURES 6–9 in A new endoparasitic gregarine genus, Stomatocystis indica gen. nov., sp. nov. (Apicomplexa: Sporozoea: Stomatophorinae) from the seminal vesicles of an Indian earthworm (Annelida: Oligochaeta) Amynthas diffringens Baird
FIGURES 6–9. Camera lucida drawings of different stages in the life cycle of Stomatocystis indica gen. nov., sp. nov. from seminal vesicles of earthworm Amynthas diffringens Baird. 6. a mature gamont showing central mucron within the sucker; 7. syzygy; 8. gametocytes within a gametocyst; 9. oocyst. Abbreviation: prprotoplasmic ridges. Scale bars: Figs. 7–8 (50 µm), Fig. 9 (10 µm)
FIGURES 1–5 in A new endoparasitic gregarine genus, Stomatocystis indica gen. nov., sp. nov. (Apicomplexa: Sporozoea: Stomatophorinae) from the seminal vesicles of an Indian earthworm (Annelida: Oligochaeta) Amynthas diffringens Baird
FIGURES 1–5. Photomicrographs of different stages in the life cycle of Stomatocystis indica gen. nov, sp. nov. from seminal vesicles of earthworm Amynthas diffringens Baird. 1. a slightly curved trophozoite showing the sucker and epimeritelike structure; 2. enlarged view of the sucker showing protoplasmic ridgelike processes in its lateral margin; 3. syzygy; 4. gametocytes within a gametocyst; 5. navicular oocysts. Abbreviation: prprotoplasmic ridges. Scale bars: Figs. 1–4 (50 µm), Fig. 5 (10 µm)
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.