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93 results for “species aggregates”
Figure 9. N in Phylogenetic analysis of the Niphargus orcinus species- aggregate (Crustacea: Amphipoda: Niphargidae) with description of new taxa
Figure 9. N. dolichopus sp. n., holotype. Gnathopod I (above) and gnathopod II (below).
Figure 8. N in Phylogenetic analysis of the Niphargus orcinus species- aggregate (Crustacea: Amphipoda: Niphargidae) with description of new taxa
Figure 8. N. dolichopus sp. n., holotype. Mouthparts.
Figure 7. N in Phylogenetic analysis of the Niphargus orcinus species- aggregate (Crustacea: Amphipoda: Niphargidae) with description of new taxa
Figure 7. N. lourensis sp. n. (above) and N. polymorphus sp. n. (below). Holotypes, lateral view.
Leaf area predicts conspecific spatial aggregation of woody species
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Individual and species variation in mixed-species aggregations of harvestmen
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Not a melting pot: plant species aggregate in their non-native range
<p><b>Aim</b>: Plant species continue to be moved outside of their native range by human activities. Here, we aim at determining whether, once introduced, plants assimilate into native communities, or whether they aggregate, thus forming mosaics of native- and alien-rich communities. Alien species may aggregate in their non-native range due to shared habitat preferences, such as their tendency to establish in high-biomass, species-poor areas.</p> <p><b>Location</b>: 22 herbaceous grasslands in 14 countries, mainly in the temperate zone.</p> <p><b>Time period</b>: 2012 - 2016.</p> <p><b>Major taxa studied</b>: Plants.</p> <p><b>Methods</b>: We used a globally coordinated survey. Within this survey, we found 46 plant species, predominantly from Eurasia, for which we had co-occurrence data in their native and non-native range. We test for differences in co-occurrence patterns of 46 species, between their native (home) and non-native (away) range. We also tested whether species had similar habitat preferences, by testing for differences in total biomass and species richness of the patches species occupy in their native and non-native range.</p> <p><b>Results</b>: We found the same species to show different patterns of association, depending on whether they were in their native or non-native range. Alien species were negatively associated with native species, and aggregated instead with other alien species in species-poor, high-biomass communities in their non-native, compared to their native range.</p> <p><b>Main conclusions</b>: The strong differences between the native (home) and non-native (away) range in species co-occurrence patterns are evidence that how species associate with resident communities in their non-native range is not species-dependent, but rather a property of being away from their native range. These results thus highlight that species may undergo important ecological changes when introduced away from their native range. Overall, we show origin-dependent associations that result in novel communities in which alien-rich patches exist within a mosaic of native-dominated communities.</p>
Data from: Discovery of a multi-species shark aggregation and parturition area in the Ba Estuary, Fiji Islands
Population declines in shark species have been reported on local and global scales, with overfishing, habitat destruction and climate change posing severe threats. The lack of species-specific baseline data on ecology and distribution of many sharks, however, makes conservation measures challenging. Here we present a fisheries-independent shark survey from the Fiji Islands, where scientific knowledge on locally occurring elasmobranchs is largely still lacking despite the location's role as a shark hotspot in the Pacific. Juvenile shark abundance in the fishing grounds of the Ba Estuary (north-western Viti Levu) was assessed with a gillnet- and longline-based survey from December 2015 to April 2016. A total of 103 juvenile sharks identified as blacktip Carcharhinus limbatus (n = 57), scalloped hammerhead Sphyrna lewini (n = 35), and great hammerhead Sphyrna mokarran (n = 11) sharks were captured, tagged, and released. The condition of umbilical scars (68 % open or semi-healed), mean sizes of individuals (± SD) (C. limbatus: 66.5 ± 3.8 cm, S. lewini: 51.8 ± 4.8 cm, S. mokarran 77.4 ± 2.8 cm), and the presence of these species over recent years (based on fishermen interviews), suggest that the Ba Estuary area is a critical habitat for multiple species that are classified as "Near Threatened" or "Endangered". Specifically, the area likely acts as a parturition ground over the studied period, and potentially as a subsequent nursery area. We identified subareas of high abundance and found that temperature, salinity and depth acted as small-scale environmental drivers of shark abundance. The data suggests a tendency for species-specific spatial use, both horizontally (i.e. between sampling areas) and vertically (i.e. across the water column). These results enhance the understanding of shark ecology in Fiji and provide a scientific basis for the implementation of local conservation strategies that contribute to the protection of these threatened species.
FIGURE 5 in Two new species of Ostracoda from hydrothermal vents of Riftia pachyptila aggregations on the East Pacific Rise (Halocypridina; Cladocopina)
FIGURE 5. Archiconchoecia chavturi, new species, adult female, holotype: A, right mandible, mv; B, endopod left mandible, lv; C, part basis and endopod left mandible, lv; D, part coxa and basis right mandible, mv; E, coxa endite right mandible as seen through basis (indistinct), lv. (lv = lateral view; mv = medial view.)
FIGURE 8 in Two new species of Ostracoda from hydrothermal vents of Riftia pachyptila aggregations on the East Pacific Rise (Halocypridina; Cladocopina)
FIGURE 8. Archiconchoecia chavturi, new species, adult female, holotype: eggs and spermatheca on lower right and detail of spermatheca showing threadlike sperm on upper left.
FIGURE 12 in Two new species of Ostracoda from hydrothermal vents of Riftia pachyptila aggregations on the East Pacific Rise (Halocypridina; Cladocopina)
FIGURE 12. Polycopetta pax, new species, adult female, holotype: A, left maxilla, lv (nabs); B, right maxilla drawn on body, lv (nabs); C, exopod right maxilla, lv; D, precoxal endite I of maxilla, anterior to left; E, 5th limb. (lv = lateral view; nabs = not all bristles shown.)
FIGURE 11 in Two new species of Ostracoda from hydrothermal vents of Riftia pachyptila aggregations on the East Pacific Rise (Halocypridina; Cladocopina)
FIGURE 11. Polycopetta pax, new species, adult female, holotype: A, right mandible (coxale endite missing) lv; B, left mandible, mv; C, right maxilla, mv. (lv = lateral view; mv = medial view.)
FIGURE 1 in Two new species of Ostracoda from hydrothermal vents of Riftia pachyptila aggregations on the East Pacific Rise (Halocypridina; Cladocopina)
FIGURE 1. Archiconchoecia chavturi, new species, adult female, holotype, length 0.60 mm: A, complete specimen from right side; B, right valve, iv; C, left valve, iv; D, lateral view of posterior end of carapace showing both valves (detail from 2A); E, ventral view of anterior of carapace with valves partly open. (iv = inside view.)
FIGURE 13 in Two new species of Ostracoda from hydrothermal vents of Riftia pachyptila aggregations on the East Pacific Rise (Halocypridina; Cladocopina)
FIGURE 13. Polycopetta pax, new species, adult female, holotype: A, posterior of body from right side showing unextruded eggs (claws of furca missing); B, upper lip and esophagus.
Raw images for bead aggregation assays - Heterophilic and homophilic cadherin interactions in intestinal intermicrovillar links are species dependent
<p>Intermicrovillar links are formed by two non-classical members of the cadherin superfamily of calcium-dependent cell adhesion proteins: protocadherin-24 (PCDH24, also known as CDHR2) and the mucin-like protocadherin (CDHR5). Images in this data set are for bead aggregations assays used to identify the PCDH24 and CDHR5 domains involved in both heterophilic and homophilic adhesion for human and mouse proteins.</p>
FIGURE. Selected specimens previously cited under Thalictrum atriplex by Wang (2018) but actually should not belong to that species, with their identity remaining to be determined. A. China, Sichuan, Kangding, K.C. Kuan & W.T. Wang 69 (PE01040677) (inset: flower). B. Duplicate (PE00447960) (inset: aggregate fruit). C. China, Sichuan, Kangding, H.L. Tisang 36027 (PE00447943) (inset: flower). D. China, Sichuan, Kangding, C.S. Liu 695 (PE00447956) (inset: aggregate fruits). in Thalictrum spiristylum (Ranunculaceae), described from northwestern Yunnan, China, is merged with T. atriplex
FIGURE. Selected specimens previously cited under Thalictrum atriplex by Wang (2018) but actually should not belong to that species, with their identity remaining to be determined. A. China, Sichuan, Kangding, K.C. Kuan & W.T. Wang 69 (PE01040677) (inset: flower). B. Duplicate (PE00447960) (inset: aggregate fruit). C. China, Sichuan, Kangding, H.L. Tisang 36027 (PE00447943) (inset: flower). D. China, Sichuan, Kangding, C.S. Liu 695 (PE00447956) (inset: aggregate fruits).
FIGURE. Cladosporium bambusicola (VIC 44237, holotype). A–D. Colonies on A. Potato dextrose agar; B. Malt extract agar; C. Oatmeal agar; D. Synthetic nutrient-poor agar, after 14 days at 25 ºC, under near-ultraviolet light, respectively. E–F. Conidiophore and bigger conidia. G–H. Conidiophores and smaller conidia. I. Stromatic hyphal aggregation. J–K. Micronematous conidiophores. L. Ramoconidia and conidia. M. Microcyclic conidiogenesis. Scale bars: E = 50 µM; F–M = 20 µM. in Six new species of Cladosporium associated with decayed leaves of native bamboo (Bambusoideae) in a fragment of Brazilian Atlantic Forest
FIGURE. Cladosporium bambusicola (VIC 44237, holotype). A–D. Colonies on A. Potato dextrose agar; B. Malt extract agar; C. Oatmeal agar; D. Synthetic nutrient-poor agar, after 14 days at 25 ºC, under near-ultraviolet light, respectively. E–F. Conidiophore and bigger conidia. G–H. Conidiophores and smaller conidia. I. Stromatic hyphal aggregation. J–K. Micronematous conidiophores. L. Ramoconidia and conidia. M. Microcyclic conidiogenesis. Scale bars: E = 50 µM; F–M = 20 µM.
FIGURE. Cladosporium aulonemiae (VIC 44413, holotype). A–D. Colonies on A. Potato dextrose agar; B. Malt extract agar; C. Oatmeal agar; D. Synthetic nutrient-poor agar, after 14 days at 25 ºC, under near-ultraviolet light, respectively. E–G. Macronematous conidiophores and numerous conidia; H–I. Formation of loci in close succession; I. Spread polysaccharide-like material; J. Micronematous conidiophores; K. Ramoconidia and conidia; L. Microcyclic conidiogenesis; M. Stromatic hyphal aggregation. Scale bars: E–M = 20 µM. in Six new species of Cladosporium associated with decayed leaves of native bamboo (Bambusoideae) in a fragment of Brazilian Atlantic Forest
FIGURE. Cladosporium aulonemiae (VIC 44413, holotype). A–D. Colonies on A. Potato dextrose agar; B. Malt extract agar; C. Oatmeal agar; D. Synthetic nutrient-poor agar, after 14 days at 25 ºC, under near-ultraviolet light, respectively. E–G. Macronematous conidiophores and numerous conidia; H–I. Formation of loci in close succession; I. Spread polysaccharide-like material; J. Micronematous conidiophores; K. Ramoconidia and conidia; L. Microcyclic conidiogenesis; M. Stromatic hyphal aggregation. Scale bars: E–M = 20 µM.
FIGURE 1 in Amaranthus bengalense (Amaranthaceae) a new species from India, with taxonomical notes on A. blitum aggregate
FIGURE 1. Box plot for the diagnostic measurable characters (measurements are in mm): A) Seed dimeter; B) Ratio length bracts/tepals. Abbreviations: bli = A. blitum. var. blitum, ole = A. blitum. var. oleraceus, ben = A. bengalense, ema = A. emarginatus. var. emarginatus, pse = A. emarginatus. var. pseudogracilis.
FIGURE 2. Amaranthus bengalense Das & Iamonico. A in Amaranthus bengalense (Amaranthaceae) a new species from India, with taxonomical notes on A. blitum aggregate
FIGURE 2. Amaranthus bengalense Das & Iamonico. A. Habit; B. Synflorescence (part); C. Bract; D. Bracteole; E. Tepal of male flower; F. Tepal of female flower; G. Male flower; H. Female flower.
Matrix aggregation of species of Phyla Annelida (Polychaeta), Mollusca, Arthropoda (Decapoda, Stomatopoda, Amphipoda, and Chelicerata), and Echinodermata registered of the Caribbean Sea and Gulf of Mexico region by Ocean Biodiversity Information Systems of the research "Evaluation of the use of Autonomous Reef Monitoring Structures (ARMS) for capturing the biological diversity of two coral reefs in the Yucatán Península, México"
<p>This database consists of an aggregation matrix of species from Ocean Biodiversity Information Systems using as geographic filters the Caribbean Sea region (ID 34287) and the Gulf of Mexico region (ID 34287) nomenclature and hierarchical classification of each Phyla from World Register of Marine Species used for the calculation of average taxonomic distinction of species belonging to the Phyla Annelida (Polychaeta), Mollusca, Arthropoda (Decapoda, Stomatopoda, Amphipoda, and Chelicerata), and Echinodermata associated to Autonomous Reefs Monitoring Structures from the research “Evaluation of the use of Autonomous Reef Monitoring Structures (ARMS) to estimate cryptic diversity in two coral reefs of the Yucatan Península, México”</p> <p><strong>*Corresponding autor: </strong>edlinguerra@gmail.com</p> <p>BIS Ocean Biodiversity Information System. Available online: <a href="http://www.iobis.org/">www.iobis.org</a>.</p> <p>Horton, T.; Gofas, S.; Kroh, A.; Poore, G.C.B.; Read, G.; Rosenberg, G.; Stöhr, S.; Bailly, N.; Boury-Esnault, N.; Brandão, S.N.; et al. Improving nomenclatural consistency: A decade of experience in the World Register of Marine Species. <em>Eur. J. Taxon.</em> <strong>2017</strong>, <em>2017</em>, doi:10.5852/ejt.2017.389.</p> <p><span lang="EN-US">was produced in collaboration with the Biodiversidad Marina de Yucatán project. </span><a href="https://www.bdmy.org.mx/carteles-publicaciones/" target="_blank" rel="noopener">https://www.bdmy.org.mx/,</a> Universidad Nacional Autonoma de México and Escuela Nacional de Estudios Superiores</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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