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656 results for “stonefly”
FIGURE 5 in Caroperla brevihamata (Plecoptera: Perlidae), a new stonefly species from Guangxi Zhuang Autonomous Region of southern China
FIGURE 5. Caroperla brevihamata Mo, Wang & Li, sp. nov. (female). a. Terminalia, ventral view. c. Terminalia, lateral view.
FIGURE 1 in Caroperla brevihamata (Plecoptera: Perlidae), a new stonefly species from Guangxi Zhuang Autonomous Region of southern China
FIGURE 1. Caroperla brevihamata Mo, Wang & Li, sp. nov. a. Male adult habitus, dorsal view. b. Male head and pronotum, dorsal view. c. Female head and pronotum, dorsal view.
FIGURE 4 in Caroperla brevihamata (Plecoptera: Perlidae), a new stonefly species from Guangxi Zhuang Autonomous Region of southern China
FIGURE 4. Caroperla brevihamata Mo, Wang & Li, sp. nov. a. Male abdomen, lateral view b. Male paraproct, caudal view. c. Male terminalia after being cleared, oblique dorsal view. d. Female cerci, ventral view. (epiproct in red line; paraproct in yellow line; vestige of gill in blue line)
FIGURE 3 in Caroperla brevihamata (Plecoptera: Perlidae), a new stonefly species from Guangxi Zhuang Autonomous Region of southern China
FIGURE 3. Caroperla brevihamata Mo, Wang & Li, sp. nov. (male). a. Abdomen, ventral view. b. Terminalia after being cleared, ventral view. c. Cerci, ventral view.
FIGURE 2 in Caroperla brevihamata (Plecoptera: Perlidae), a new stonefly species from Guangxi Zhuang Autonomous Region of southern China
FIGURE 2. Caroperla brevihamata Mo, Wang & Li, sp. nov. (male). a. Abdomen, dorsal view. b. Terminalia after being cleared, dorsal view. c. Cerci, dorsal view. (vestige of gill in blue line)
Data from: Phylogeography and species biogeography of montane Great Basin stoneflies
Sky islands are ideal systems for determining the effects of climatic oscillations on species distributions and genetic structure. Our study focused on montane stonefly populations in the Great Basin of western North America. We used niche-based distribution modelling, phylogeography and traditional species-based biogeography to test several hypotheses as follows: (i) genetic differentiation among Doroneuria baumanni populations will be independent of hydrologic connectivity (headwater model); (ii) Sky islands were colonized when habitat was more continuous and populations likely experienced multiple expansions and contractions; (iii) Colonization events were coincident with the late Pleistocene and Holocene; and (iv) Shared topography and climate history will result in concordant patterns of genetic differentiation in D. baumanni and occurrences of 32 stonefly species across the region. Overall, ΦST's and coalescent-based estimates of migration were consistent with the headwater model. Maximum likelihood and Bayesian gene trees identified three major nonoverlapping east-west clades. Distribution modelling indicated more suitable habitat in the Great Basin during the Last Glacial Maximum than at present, but none during the last interglacial period. Demographic analyses showed evidence of population expansion in one of the three major east–west clades. Intra-clade divergence times (60 000–183 000 ybp) were well within the late Pleistocene while among-clade divergence times (499 000–719 000 ybp) were deeper. Genetic differentiation in D. baumanni and distributions of stonefly species were significantly concordant. These results imply that climatic oscillations have played major roles in shaping the genetic structure and distributions of Great Basin stoneflies, but that divergence among clades occurred much earlier than our late Pleistocence/early Holocene predictions.
Data from: Ecological speciation by temporal isolation in a population of the stonefly Leuctra hippopus (Plecoptera, Leuctridae)
Stream dwelling invertebrates are ideal candidates for the study of ecological speciation as they are often adapted to particular environmental conditions within a stream and inhabit only certain reaches of a drainage basin, separated by unsuitable habitat. We studied an atypical population of the stonefly Leuctra hippopus at a site in central Norway, the Isterfoss rapids, in relation to three nearby and two remote conspecific populations. Adults of this population emerge about a month earlier than those of nearby populations, live on large boulders emerging from the rapids, and are short-lived. This population also has distinct morphological features and was studied earlier during the period 1975–1990. We reassessed morphological distinctness with new measurements and added several analyses of genetic distinctness based on mitochondrial and nuclear sequence markers, as well as AFLP fingerprinting and SNPs mined from RAD sequences. The Isterfoss population is shown to be most closely related to its geographical neighbors, yet clearly morphologically and genetically distinct and homogeneous. We conclude that this population is in the process of sympatric speciation, with temporal isolation being the most important direct barrier to gene flow. The shift in reproductive season results from the particular temperature and water level regime in the Isterfoss rapids. The distinct adult body shape and loss of flight are hypothesized to be an adaptation to the unusual habitat. Ecological diversification on small spatial and temporal scales is one of the likely causes of the high diversity of aquatic insects.
Data from: Demographic modelling reveals a history of divergence with gene flow for a glacially tied stonefly in a changing post-Pleistocene landscape
Aim: Climate warming is causing extensive loss of glaciers in mountainous regions, yet our understanding of how glacial recession influences evolutionary processes and genetic diversity is limited. Linking genetic structure with the influences shaping it can improve understanding of how species respond to environmental change. Here, we used genome-scale data and demographic modelling to resolve the evolutionary history of Lednia tumana, a rare, aquatic insect endemic to alpine streams. We also employed a range of widely used data filtering approaches to quantify how they influenced population structure results. Location: Alpine streams in the Rocky Mountains of Glacier National Park, Montana, USA. Taxon: Lednia tumana, a stonefly (Order Plecoptera) in the family Nemouridae. Methods: We generated single nucleotide polymorphism data through restriction-site associated DNA sequencing to assess contemporary patterns of genetic structure for 11 L. tumana populations. Using identified clusters, we assessed demographic history through model selection and parameter estimation in a coalescent framework. During population structure analyses, we filtered our data to assess the influence of singletons, missing data and total number of markers on results. Results: Contemporary patterns of population structure indicate that L. tumana exhibits a pattern of isolation-by-distance among populations within three genetic clusters that align with geography. Mean pairwise genetic differentiation (FST) among populations was 0.033. Coalescent-based demographic modelling supported divergence with gene flow among genetic clusters since the end of the Pleistocene (~13-17 kya), likely reflecting the south-to-north recession of ice sheets that accumulated during the Wisconsin glaciation. Main conclusions: We identified a link between glacial retreat, evolutionary history and patterns of genetic diversity for a range-restricted stonefly imperiled by climate change. This finding included a history of divergence with gene flow, an unexpected conclusion for a mountaintop species. Beyond L. tumana, this study demonstrates the complexity of assessing genetic structure for weakly differentiated species, shows the degree to which rare alleles and missing data may influence results, and highlights the usefulness of genome-scale data to extend population genetic inquiry in non-model species.
Data from: Insect wing loss is tightly linked to the treeline: evidence from a diverse stonefly assemblage
The secondary loss of flight in previously winged insect lineages has long fascinated biologists. Habitat stability and isolation are thought to play important roles in driving wing reduction (Roff 1990, 1994), with exposure to high winds suggested to accelerate this process (Darwin 1859), although the role exposure plays in insect wing loss has never been empirically demonstrated. Here we assess fine-scale distributional records from a diverse regional stonefly assemblage, to demonstrate a widespread association between wing loss and the treeline in New Zealand. The observed pattern suggests that exposure plays a crucial role driving wing loss in alpine insects.
FIGURES 9–10 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURES 9–10. Phanoperla constanspina sp. nov. male nymph. (9) Right mandible. (10) Right foreleg. Scale = 0.5 mm.
FIGURE 12 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURE 12. Phanoperla constanspina sp. nov. male nymph. (A) Suture of anterolateral submental lobes. (B) Mesosternum posterior margin pointing fringes of hairs. (C) One pair of posterocoxal gill of hindleg.
FIGURE 7 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURE 7. Phenotypic variation of six adult male Phanoperla constanspina sp. nov. based on the shape and structure of hemitergites (HT) and unbranched anterior process (AP), adorned with variable short setae on tergum 9. (A) (Haplotype: A- G23.m) Medium-sized AP, body and slightly bent on the pointed apex, setal patches isolated from each other. (B) (Haplotype: A-H7.m) AP small and pointed, setae located above the apical tip adjacent to each other. (C) (Haplotype: A-H16.m) Plump base and small AP (Fig. 5), with slightly pointed tip, paired setal patches adjacent and overlapping. (D) (Haplotype: A-H12.m) Medium and longer AP, bent on the inner side near the apex, setal patches fused, distributed along and near the process. (E) (Haplotype: A-E23.m) AP blunt on the tip in a medium-sized body, setal patches adjacent. (F) (Haplotype: A-H11.m) HT and AP broad and plump, resembling a hook-like structure at the tip, setal patches adjacent.
FIGURE 2 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURE 2. Phanoperla constanspina sp. nov. male wing. (2A) Right forewing, showing the forking of Cu2 from Cu1. (2B) Right hindwing. Scale = 1.00 mm.
FIGURES 1 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURES 1. Phanoperla constanspina sp. nov. head and pronotum. (1A) Male adult, indicating occipital line. (1B) Female adult. Scale = 1.00 mm.
FIGURES 3–4 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURES 3–4. Phanoperla constanspina sp. nov. male. (3) Right foreleg. (4) Abdominal sternite showing hair brushes on each segment (S5–S8). Penial capsule visible on S9. Scale = 1.00 mm.
FIGURE 5 in Description of a new Oriental stonefly species, Phanoperla constanspina (Plecoptera: Perlidae) from Mindanao, Philippines and association of life stages using DNA barcoding
FIGURE 5. Phanoperla constanspina sp. nov. male dorsal terminalia showing the hemitergal (arrow) and paired clumps of short setae located on medial tergum 9. Scale = 1.00 mm.
FIGURES 1–4 in Leuctra klapperichi, a new stonefly species (Plecoptera: Leuctridae) from Iran with geographic affinities of related species
FIGURES 1–4. Male terminalia of Leuctra klapperichi sp. n. — 1: dorsal view; 2: lateral view; 3: paraprocts, caudal view; 4: ventral view of male terminalia — scale 0.5 mm
FIGURES 11–12. Type locality, Hopkins Falls. 11 in Dinotoperla walkeri sp. nov. (Plecoptera: Gripopterygidae), a brachypterous stonefly from western Victoria, Australia
FIGURES 11–12. Type locality, Hopkins Falls. 11. View of site, specimens were collected from the base of the falls at the far right and from the foreground riffle. 12. Collecting area at base of falls.
FIGURES 7–10 in Dinotoperla walkeri sp. nov. (Plecoptera: Gripopterygidae), a brachypterous stonefly from western Victoria, Australia
FIGURES 7–10. Dinotoperla walkeri, sp. nov.. 7. Female, apex of abdomen, dorsal. 8. Female, apex of abdomen, ventral. 9. Nymph, dorsal. 10. Nymph, hind leg.
FIGURES 4–11 in New and little – known stoneflies (Plecoptera) from Albania and the neighbouring countries
FIGURES 4–11. Imago of Leuctra mortoni feheri ssp. n. (4–7, 10–11) and L. mortoni mortoni Kempny (8–9) —4: male terminalia, dorsal view; 5: male terminalia, lateral view; 6: male terminalia, ventral view; 7–8: paraprocts and specilla, caudal view; 9: male terminalia, dorsal view; 10: female terminalia, ventral view; 11: female terminalia, lateral view — scale 0.5 mm, Figs 7–8 not to scale.
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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)
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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.