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222 results for “Honshu”
FIGURE 6 in A new species of nine-spined stickleback, Pungitius modestus (Gasterosteiformes, Gasterosteidae), from northern Honshu, Japan
FIGURE 6. Syntypes of Gasterosteus sinensis Guichenot, 1869, MNHN 0000-5228, 21–26 mm SL.
FIGURE 1 in A new species of nine-spined stickleback, Pungitius modestus (Gasterosteiformes, Gasterosteidae), from northern Honshu, Japan
FIGURE 1. Map showing the type locality (solid circle) of Pungitius modestus, sp. nov.
Evolutionary effects of geographic and climatic isolation between Rhododendron tsusiophyllum populations on the Izu Islands and mainland Honshu of Japan
<p>Geographic and environmental isolations of islands and the mainland offer excellent opportunity to investigate colonization and survival dynamics of island populations. We inferred and compared evolutionary processes and the demographic history of <i>Rhododendron tsusiophyllum</i>, in the Izu Islands and the much larger island Honshu, treated here as the mainland, using thousands of nuclear SNPs obtained by ddRAD-seq from eight populations of <i>R. tsusiophyllum</i> and three populations of <i>R. tschonoskii</i> as an outgroup. Phylogenetic relationships and their habitats suggest that <i>R. tsusiophyllum</i> had evolved and migrated from cold north to warm south regions. We detected clear genetic divergence among populations in three regions of Honshu and the Izu Islands, suggesting restricted migration between them due to isolated habitats on mountains even in the mainland. The three regions have different changes in effective population size, especially, genetic diversity and population size of the Izu Islands are small compared to the others. Further, habitats of populations in the Izu Islands are warmer than those in Honshu, suggesting that they have undergone adaptive evolution. Our study provides evidences of montane rather than insular isolation on genetic divergence, survival of populations and significance of adaptive evolution for island populations with small population size and low genetic diversity, despite close proximity to mainland populations.</p>
FIGURE 11. A in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 11. A male paratype of O. fuscus sp. nov. (KUHE 48283) in life.
FIGURE 5 in Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)
FIGURE 5. Male holotype of O. intermedius sp. nov. (KUHE 47455) in life.
Figure 5 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 5 - Orobdella masaakikuroiwai sp. n., paratype, KUZ Z690. A Dorsal view of live animal. B Live animal found curled up under a stone at the type locality: scale bar, 2 mm.
Figure 6 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 6 - The ML tree (ln L = −23350.60) for 5,124 bp of nuclear 18S rDNA and histone H3, and mitochondrial COI, tRNACys, tRNAMet, 12S rDNA, tRNAVal, 16S rDNA, and ND1 markers. A species name of Orobdella in red indicates a quadrannulate species; in green, sexannulate; and in blue, octannulate. The numbers associated with the nodes represent the bootstrap values for ML (BS)/and Bayesian posterior probabilities (BPPs).
Figure 4 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 4 - Orobdella masaakikuroiwai sp. n., holotype, KUZ Z694. A Dorsal view of reproductive system including ventral nervous system. B Dorsal, C lateral, and D ventral views of male atrium: B including position of ganglion XI. E Dorsal view of female reproductive system including position of ganglion III. Scale bars, 1 mm (A) and 0.25 mm (B–E). Abbreviations: ac, atrial cornua; at, atrium; cod, common oviduct; ed, ejaculatory duct; ep, epididymis; gp, gastropore; od, oviduct; ov, ovisac; and ts, testisacs.
Figure 7 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 7 - The ML tree (ln L = −8756.30) for 2,901 bp of mitochondrial COI, tRNACys, tRNAMet, 12S rDNA, tRNAVal, 16S rDNA, and ND1 markers. Voucher numbers of the specimens of Orobdella masaakikuroiwai sp. n. are accompanied by the collection locality numbers (see Fig. 1). The numbers associated with the nodes represent the bootstrap values for ML (BS)/and Bayesian posterior probabilities (BPPs).
Figure 3 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 3 - Orobdella masaakikuroiwai sp. n., holotype, KUZ Z694. A Dorsal and B ventral views of somites I–VIII. C Dorsal and D ventral views of somites XXV–XXVII and caudal sucker. E Ventral view of somites X–XIII. F Ventral view of gastropore and female gonopore. G Ventral view of gastroporal duct. Scale bars, 1 mm (E), 0.5 mm (A–D, G) and 0.25 mm (F). Abbreviations: af, annular furrow; an, anus; cl, clitellum; cp, crop; fg, female gonopore; gd, gastroporal duct; gp, gastropore; mg, male gonopore; np, nephridiopore; and ph, pharynx.
Figure 2 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 2 - Orobdella masaakikuroiwai sp. n., holotype, KUZ Z694. A Dorsal and B ventral views. Scale bar, 5 mm.
Figure 1 from: Nakano T (2014) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from central Honshu, Japan. ZooKeys 445: 57-76. https://doi.org/10.3897/zookeys.445.7999
Figure 1 - Map showing the collection localities of the specimens examined in this study. Open circle (4) indicates the Orobdella masaakikuroiwai sp. n. type locality, and closed circles (1–3, 5–7) indicate additional localities.
Figure 5 from: Nakajima J (2016) Cobitis takenoi sp. n. (Cypriniformes, Cobitidae): a new spined loach from Honshu Island, Japan. ZooKeys 568: 119-128. https://doi.org/10.3897/zookeys.568.7733
Figure 5 - Change in colouration of the Cobitis takenoi sp. n. adult male (paratype, KUN-P 45133, 57.7 mm SL). a Spawning season, 8 July 2014 b non-spawning season, 5 December 2014.
Figure 4 from: Nakajima J (2016) Cobitis takenoi sp. n. (Cypriniformes, Cobitidae): a new spined loach from Honshu Island, Japan. ZooKeys 568: 119-128. https://doi.org/10.3897/zookeys.568.7733
Figure 4 - Cobitis takenoi sp. n., KPM-NI 31994, holotype. a Mouth b right suborbital spine, lateral view (upper), and dorsal view (lower) c dorsal view of the pectoral fin d lamina circularis and upper segments of the first branched soft ray (USP). Scale bars: 1 mm.
Figure 3 from: Nakajima J (2016) Cobitis takenoi sp. n. (Cypriniformes, Cobitidae): a new spined loach from Honshu Island, Japan. ZooKeys 568: 119-128. https://doi.org/10.3897/zookeys.568.7733
Figure 3 - Male (a, c holotype, KPM-NI 31994, 60.4 mm SL) and female (b, d paratype, KPM-NI 31999, 70.5 mm SL) specimens of Cobitis takenoi sp. n. a, b Lateral view c, d dorsal view.
Figure 6 from: Nakajima J (2016) Cobitis takenoi sp. n. (Cypriniformes, Cobitidae): a new spined loach from Honshu Island, Japan. ZooKeys 568: 119-128. https://doi.org/10.3897/zookeys.568.7733
Figure 6 - Narrow and broad types of upper segments of the first branched soft ray (USP). a Narrow type (Cobitis kaibarai) b broad type (Cobitis magnostriata). Redrawn from Nakajima (2012). Scale bars: 1 mm.
Figure 6 from: Nakano T (2016) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from western Honshu, Japan. ZooKeys 553: 33-51. https://doi.org/10.3897/zookeys.553.6723
Figure 6 - Bayesian inference tree for 5,192 bp of nuclear 18S rRNA and histone H3 and mitochondrial COI, tRNACys, tRNAMet, 12S rRNA, tRNAVal, 16S rRNA, tRNALeu and ND1 markers. Numbers on nodes represent bootstrap values for maximum likelihood and Bayesian posterior probabilities. A species name of Orobdella in red indicates a quadrannulate species; in green, sexannulate; and in blue, octannulate.
Figure 3 from: Nakano T (2016) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from western Honshu, Japan. ZooKeys 553: 33-51. https://doi.org/10.3897/zookeys.553.6723
Figure 3 - Orobdella naraharaetmagarum sp. n., holotype, KUZ Z1652. A Dorsal and B ventral views of somites I–VIII. C Dorsal and D ventral views of somites XXIV–XXVII and caudal sucker E Ventral view of somites XI–XIII F Ventral view of gastropore and female gonopore G Ventral view of gastroporal duct. Scale bars: 1 mm (C–E, G), 0.5 mm (A, B) and 0.25 mm (F). Abbreviations: af, annular furrow; an, anus; cp, crop; fg, female gonopore; gd, gastroporal duct; gp, gastropore; mg, male gonopore; np, nephridiopore; and ph, pharynx.
Figure 4 from: Nakano T (2016) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from western Honshu, Japan. ZooKeys 553: 33-51. https://doi.org/10.3897/zookeys.553.6723
Figure 4 - Orobdella naraharaetmagarum sp. n., holotype, KUZ Z1652. A Dorsal view of reproductive system including ventral nervous system. B Dorsal (including positions of ganglia XI and XII), C lateral, and D ventral views of male atrium. E Dorsal view of female reproductive system including position of ganglion XIII. Scale bars: 2 mm (A), 0.5 mm (B–D) and 0.25 mm (E). Abbreviations: ac, atrial cornua; at, atrium; cod, common oviduct; ed, ejaculatory duct; ep, epididymis; gp, gastropore; od, oviduct; ov, ovisac; and ts, testisac.
Figure 1 from: Nakano T (2016) A new quadrannulate species of Orobdella (Hirudinida, Arhynchobdellida, Orobdellidae) from western Honshu, Japan. ZooKeys 553: 33-51. https://doi.org/10.3897/zookeys.553.6723
Figure 1 - Map showing the collection localities of the specimens examined in this study. Open circle (5) indicates the type locality of the new species, Orobdella naraharaetmagarum sp. n., and closed circles (1–4) indicate additional localities.
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