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888 results for “Canary”
FIGURE 14 in A revision of the genus Orbilia in the Canary Islands
FIGURE 14. Morphological features of Orbilia gambelii. 1. Fresh apothecia. 2. Excipular tissues in median section. 3. Asci. 4. Ascospores.
FIGURE 12 in A revision of the genus Orbilia in the Canary Islands
FIGURE 12. Morphological features of Orbilia xanthostigma. 1. Fresh and rehydrated apothecia. 2. Asci. 3. Paraphyses. 4. Excipular
FIGURE 10 in A revision of the genus Orbilia in the Canary Islands
FIGURE 10. Morphological features of Orbilia eucalypti. 1. Fresh and rehydrated apothecia. 2. Excipular tissues in median section. 3. Living ascospores. 4. Living and dead asci. 5. Living paraphyses. 500 μm= 1a–j; 50 μm= 2; 10 μm= 3a–d, 4a–c, 5a–e. Mounted in: CR= 4b, 5a; H 2 O= 2, 3a–d, 4a, 4c, 5b–e. Photos: TFC Mic. 23386= 1d; TFC Mic. 23449= 1a–c, 2, 3a, 4b, 5a; TFC Mic. 23827= 1g, 5b; TFC Mic. 23834= 1e, 3d; TFC Mic. 23888= 1f, 3c, 5c; TFC Mic. 23895= 1h, 3b, 5d; TFC Mic. 24078= 1j, 4a; TFC Mic. 24223= 1i, 4c, 5e.
FIGURE 13 in A revision of the genus Orbilia in the Canary Islands
FIGURE 13. Morphological features of Orbilia corculispora. 1. Apothecia: 1a–d: Rehydrated, 1e–f: dry. 2. Excipular tissues in median
FIGURE 16 in A revision of the genus Orbilia in the Canary Islands
FIGURE 16. Correspondence analysis for species collected in Tenerife with more than two samples. Ordination of fungal species and their vegetal community based on frequency of occurrence (eigenvalues= axis I 0.911 and axis II 0.553). Variance for axis I (18.4%) explains differences due to temperature and humidity (showing increasing humidity towards the right), and for axis II (11.2%) explains differences in regard to substrate preferences. Abbreviation: Oade= Orbilia adenocarpi, Oaso= O. asomatica, Ocor= O. corculispora, Odry= O. dryadum, Oeuc= O. eucalypti, Oeuo= O. euonymi, Ogam= O. gambelii, Ohes= O. hesperidea, Oxan= O. xanthostigma, Opis= O. pisciformis, Osuc= O. succulenticola and Ovin= O. vinosa.
FIGURE 8 in A revision of the genus Orbilia in the Canary Islands
FIGURE 8. Morphological features of Orbilia vitalbae. 1. Fresh apothecia. 2. Living and dead paraphyses. 3. Living excipular tissues in median section: 3a–b. cells at margin, 3c. cells at base. 4. Living and dead asci. 5. Living and dead ascospores. 100 μm= 1; 50 μm= 3a; 10 μm= 2a–b, 3b–c, 4a–c; 5 μm= 2c–f, 5a–b. All mounted in H2O. All photos from TFC Mic. 23937.
FIGURE 9 in A revision of the genus Orbilia in the Canary Islands
FIGURE 9. Morphological features of Orbilia dryadum. 1. Fresh apothecia. 2a. Excipular tissues in median section, 2b. section at margin,
FIGURE 7 in A revision of the genus Orbilia in the Canary Islands
FIGURE 7. Morphological features of Orbilia vinosa. 1. Rehydrated apothecia. 2. Living and dead paraphyses. 3. Excipular tissues in median section. 4. Living and dead asci. 5. Living and dead ascospores. 500 μm= 1a–b; 100 μm= 1c–f; 10 μm= 2a–d, 3a–b, 4a–d, 5c–d; 5 μm= 4e–f, 5a–b. Mounted in: CRB= 3b; CR= 2a, 2d, 4d–e, 5c; H 2 O= 2b–c, 3a, 4a, 4c, 4f, 5a–b, 5d; MLZ= 4b. Photos: TFC Mic. 22826= 1b; TFC Mic. 23356= 2a–b, 3b, 4f; TFC Mic. 23638= 1c, 2d, 3a; TFC Mic. 23919= 1e, 2c, 5a; TFC Mic. 24409= 4a–b; TFC Mic. 24010= 1d, 4d, 5b–c; TFC Mic. 24234= 1f, 4e; TFC Mic. 24428= 1a; TFC Mic. 24429= 5d; TFC Mic. 24431= 4c.
FIGURE 11 in A revision of the genus Orbilia in the Canary Islands
FIGURE 11. Morphological features of Orbilia tenuissima. 1. Rehydrated apothecia. 2. Excipular tissues in median section. 3. Glassy exudate at margin and cells rows at flank. 4. Dead asci. 5. Dead paraphyses. 6. Dead ascospores. 500 μm= 1a–c; 50 μm= 2a–b; 10 μm= 3a–b, 4, 5a–b; 5 μm= 6a–b. Mounted in: CR= 3a, 4, 5a–b, 6a; KOH= 2a, 3b, 6b; MLZ= 2b. All photos from CUP-MM 1132.
FIGURE 4 in A revision of the genus Orbilia in the Canary Islands
FIGURE 4. Morphological features of Orbilia flavidorosella. 1. Rehydrated apothecia. 2. Living excipular tissues in median section. 3. Living asci. 4. Living paraphyses. 5. Living ascospores. 500 μm= 1a; 100 μm= 1b; 50 μm= 2a; 10 μm= 2b–c, 3, 4a–c, 5a–b. Mounted in: CRB= 2b, 4a; H2O= 2a–c, 3, 4b–c, 5a–b. Photos: TFC Mic. 23738= 1a, 2a–b, 3, 4a–c, 5b; TFC Mic. 23925= 1b, 2c, 5a.
FIGURE 5 in A revision of the genus Orbilia in the Canary Islands
FIGURE 5. Morphological features of Orbilia hesperidea. 1. Rehydrated apothecia. 2. Living ascospores. 3. Excipular tissues in median section. 4. Living and dead asci. 5. Living and dead paraphyses. 100 μm= 1a–d; 50 μm= 3a; 10 μm= 2a–b, 3b–c, 4a–d, 5a–b. Mounted in: CR= 4d, 5b; H2O= 2a–b, 3a–c, 4a–c, 5a. Photos: TFC Mic. 23914= 1a–b, 2a, 3c, 4a, 4c–d, 5b; TFC Mic. 24233= 1c–d, 2b, 3a–b, 4b, 5a.
FIGURE 1 in A revision of the genus Orbilia in the Canary Islands
FIGURE 1. Morphological features of Orbilia cejpii. 1. Fresh apothecia. 2. Apothecium with excipular tissues in median section: 2a. Median section, 2b. Cells at margin, 2c. Cells at base. 3. Dead and living asci. 4. Dead and living paraphyses. 5. Living ascospores. 500
FIGURE 6 in A revision of the genus Orbilia in the Canary Islands
FIGURE 6. Morphological features of Orbilia scolecospora. 1. Fresh apothecia. 2. Excipular tissues in median section: 2a. glassy processes at margin, 2b. cells with SCBs at upper flank. 3. Living and dead asci. 4. Living paraphyses. 5. Dead and living ascospores. 500 μm= 1a, 1d, 1f; 100 μm= 1b–c, 1e 1e; 50 μm= 2a; 10 μm= 2b, 3a–d, 4a–b, 5b; 5 μm= 5a. Mounted in: CR= 3b, 3d, 4b, 5a; H 2 O= 2a–b, 3a, 3c, 4a, 5b. Photos: TFC Mic. 22307= 1f; TFC Mic. 24423= 1a–e, 2b, 3a–d, 4a–b, 5a–b; TFC Mic. 24450= 2a.
FIGURE 2 in A revision of the genus Orbilia in the Canary Islands
FIGURE 2. Morphological features of Orbilia euonymi. 1. Rehydrated apothecia. 2. Ascospores: 2a–b. Spore cluster after being released from asci, 2c & 2e. Living ascospores, 2d. Dead ascospores. 3. Excipular tissues in median section at base and margin. 4. Living paraphyses. 5. Living and dead asci. 100 μm= 1a–e; 10 μm= 2a–e, 3a–b, 4a–c, 5a–e, 5g–h; 5 μm= 5f, 5i. Mounted in: CR= 4a, 5d, 5f; H 2 O= 2a–e, 3a–b, 4b–c, 5a–c, 5e, 5g–i. Photos: TFC Mic. 24156= 1a–b, 2a–d, 4a–b, 5d–e, 5h; TFC Mic. 24549= 1c–e, 2e, 3a–b, 5a–b, 5f–g, 5i; TFC Mic. 24556= 4c.
FIGURE 3 in A revision of the genus Orbilia in the Canary Islands
FIGURE 3. Morphological features of Orbilia flavida. 1. Rehydrated apothecia. 2. Excipular tissues in median section. 3. Living asci. 4. Living paraphyses. 5. Living ascospores. 500 μm= 1b, 1d–f; 100 μm= 1a, 1c, 2a; 50 μm= 2b; 10 μm= 3, 4a–b, 5. Mounted in: H2O= 2a–b, 3, 4a–b, 5. All photos from TFC Mic. 23640.
Data from: Getting there and around: host range oscillations during colonisation of the Canary Islands by the parasitic nematode Spauligodon
Episodes of expansion and isolation in geographic range over space and time, during which parasites have the opportunity to expand their host range, are linked to the development of host-parasite mosaic assemblages and parasite diversification. In this study we investigated whether island colonisation events lead to host range oscillations in a taxon of host-specific parasitic nematodes of the genus Spauligodon in the Canary Islands. We further investigated if range oscillations also resulted in shifts in host breadth (i.e. specialization), as expected for parasites on islands. Parasite phylogeny and divergence time estimates were inferred from molecular data with Bayesian methods. Host divergence times were set as calibration priors after a priori evaluation with a global-fit method of which individual host-parasite associations likely represent cospeciation links. Parasite colonisation history was reconstructed, followed by an estimation of oscillation events and specificity level. The results indicate the presence of four Spauligodon clades in the Canary Islands, which originated from at least three different colonisation events. We found evidence of host range oscillations to truly novel hosts, which in one case led to higher diversification. Contemporary host-parasite associations show strong host specificity, suggesting that changes in host breadth were limited to the shift period. Lineages with more frequent and wider taxonomic host range oscillations prior to the initial colonisation event showed wider range oscillations during colonisation and diversification within the archipelago. Our results suggest that a lineage's evolutionary past may be the best indicator of a parasite's potential for future range expansions.
FIGURE 2. A in A new endemic Ramalina species from the Canary Islands (Ascomycota, Lecanorales)
FIGURE 2. A. Transversal section through the thallus of R. alisiosae, showing cortex (translucent layer) and chondroid plectenchyma (violet layer); B. Granules in the cortical layer; C. Cortex and chondroid layer; D. Chondroid plectenchyma; E. Cortical hyphae; F. Paraphyses; G. Ascus and paraphyses; H, I & J. Ascospores. A - in toluidine blue; B in lactophenol blue and differential interference contrast (DIC); C in phloxin after KOH treatment; D & E in toluidine blue after KOH treatment; F, G, H, I & J in DIC. Scale bars: A: 20 µm; B, C, E & F: 10 µm; D, G, H, I, J: 5 µm.
FIGURE 3. 50 in A new endemic Ramalina species from the Canary Islands (Ascomycota, Lecanorales)
FIGURE 3. 50% Majority-rule consensus tree of the Bayesian tree sampling showing the phylogenetic relationships of R. alisiosae and closely related taxa. Bold branches depict PP≥95 and BP≥70. The asterisk depicts a branch supported under ML but not in the Bayesian analysis.
FIGURE 1 in A new endemic Ramalina species from the Canary Islands (Ascomycota, Lecanorales)
FIGURE 1. Morphology of Ramalina alisiosae. A. Habit; B. Apothecium; C & D. Soralia; E. Branchlet with branching tips and small granules; F. Soralia with short branchlets; G & H. Fenestrate branches. Scale bars: A: 1 cm; B, C, D, E, F, G & H: 1mm.
FIGURE 1 in A new species in the lichen genus Vahliella from the Canary Islands, including a key to Vahliellaceae, Pannariaceae, and Coccocarpiaceae in Macaronesia
FIGURE 1. Vahliella isidioidea, part of holotype. Habit showing thallus and apothecia. Scale bar: 0.5 mm.
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