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229 results for “Mekong”
Figure 1 in Four new species of Parabathynellidae (Bathynellacea, Syncarida) from the interstitial environment of the Mekong River
Figure 1. Mekongbathynella kampucheana sp. n. (Holotype: ♀; allotype: ♂). (a), general habitus ♂ (lateral); (b), antennule ♀ (dorsal); (c), antenna ♂ (dorsal); (d), second antennular segment ♂ (lateral); (e), second antennular segment ♂ (ventral); (f), antenna ♀ (dorsal); (g), labrum ♀ (ventral). Scale bars = 0.05 mm, unless otherwise specified.
FIGURE 2 in Phallostethus cuulong, a new species of priapiumfish (Actinopterygii: Atheriniformes: Phallostethidae) from the Vietnamese Mekong
FIGURE 2. Preserved specimen of Phallostethus cuulong, showing dorsal (A), lateral (B) and ventral (C) views. ZRC 53233, holotype (male), 24.2 mm SL, Sóc Träng Province, Vietnam. Photographed and retouched by L.X. Tran.
FIGURE 1 in Phallostethus cuulong, a new species of priapiumfish (Actinopterygii: Atheriniformes: Phallostethidae) from the Vietnamese Mekong
FIGURE 1. Freshly-collected specimens of Phallostethus cuulong. A) CTU-P 2494, male, 22.5 mm SL, Tra Vinh Province, Vietnam; B) CTU-P 2327, female, 23.7 mm SL, Sóc Träng Province, Vietnam. Photographed and retouched by L.X. Tran and K. Shibukawa, respectively.
FIGURE 4 in Phallostethus cuulong, a new species of priapiumfish (Actinopterygii: Atheriniformes: Phallostethidae) from the Vietnamese Mekong
FIGURE 4. Lateral view of head and anterior part of body of cleared and stained specimen of Phallostethus cuulong. CTU-P 5020, male, 23.5 mm SL. Photographed by L.X. Tran.
FIGURE 3 in Phallostethus cuulong, a new species of priapiumfish (Actinopterygii: Atheriniformes: Phallostethidae) from the Vietnamese Mekong
FIGURE 3. Head and anterior part of body of Phallostethus cuulong. A) lateral view of left side of head and body of male, ZRC 53233, holotype, 24.2 mm SL; B) lateral view of right side of head and body of male (same specimen with A); C) lateral view of head and body of female, USNM 404477; D) ventral view of head and body of female (same specimen with C). Specimens are temporally stained with cyanine blue. Photographed and retouched by L.X. Tran and K. Shibukawa, respectively.
FIGURE 3. Corvospongilla siamensis. Holotype MSNG 56533 in Biodiversity assessment of the Lower Mekong Basin: A new species of Corvospongilla (Porifera: Spongillina: Spongillidae) from Thailand
FIGURE 3. Corvospongilla siamensis. Holotype MSNG 56533 from the Pong River (Lower Mekong Basin, Thailand). Micrographs (SEM) of the spicular complement. A, Skeletal alveolate network with ascending plurispicular tracts (arrows) to support conules at the surface (lateral view); B, Detail of alveolate skeleton of strongyles and micropseudobirotules (inset); C, Skeletal megascleres, as strongyle with microspined surface (inset, right), and tips of the rare tubercled oxeas (inset, left); D, Apices variably shaped of strongyles and a microsclere; E, micropseudobirotules entirely smooth with pseudobirotules armoured by recurved hooks; F, strongyles, with tubercles and spines, shared by gemmular theca and gemmular cage.
FIGURE 2. Corvospongilla siamensis. A, Holotype MSNG 56533 in Biodiversity assessment of the Lower Mekong Basin: A new species of Corvospongilla (Porifera: Spongillina: Spongillidae) from Thailand
FIGURE 2. Corvospongilla siamensis. A, Holotype MSNG 56533 from the Pong River (Lower Mekong Basin, Thailand). B, Detail of a chimney-like lobe with apical oscule and conulose surface. C, Spicular complement. Strongyle and micropseudobirotule from the skeletal network, and strongyle from the gemmular theca.
FIGURE 1 in Biodiversity assessment of the Lower Mekong Basin: A new species of Corvospongilla (Porifera: Spongillina: Spongillidae) from Thailand
FIGURE 1. Biogeographic pattern of the genus Corvospongilla (modified from Manconi & Pronzato, 2002, 2004). The type locality of Corvospongilla siamensis at Ban Huai Sai (16˚46ˏ20.40˝N, 102˚42ˏ48.22˝E) (Pong River, Lower Mekong Basin, Thailand) is indicated by an arrow.
FIGURE 4. Corvospongilla siamensis. Holotype MSNG 56533 in Biodiversity assessment of the Lower Mekong Basin: A new species of Corvospongilla (Porifera: Spongillina: Spongillidae) from Thailand
FIGURE 4. Corvospongilla siamensis. Holotype MSNG 56533 from the Pong River (Lower Mekong Basin, Thailand). Micrographs (SEM) of gemmules. A, Gemmules of the sessile morph in a cluster sharing the gemmular cage strictly adhering to the basal spongin plate. Each hemispherical cage envelopes one gemmular theca; B, Strongyles variably shaped at the outer surface of the gemmular cage, typical button-like gemmuloscleres are indicated by arrows; C, D, Gemmular theca variably shaped, bearing tangentially gemmuloscleres embedded in compact spongin; E, Gemmular theca surrounded by the not adhering stout spicular cage (cross section); F, Foramen with compact and chambered spongin armed by a few gemmuloscleres; G, Gemmular theca (cross section) of sublayered compact spongin protecting the mass of totipotent cells; H, Detail of the gemmular theca (cross section) of compact sublayered spongin armed by gemmuloscleres as tangential strongyles with spiny tips.
FIGURE 5 in Tetraodon palustris, a new freshwater pufferfish (Tetraodontiformes: Tetraodontidae) from the Mekong Basin of Thailand
FIGURE 5. Schematic representation of areas covered with spinules (darkest areas) on the dorsum and side of the body. A–B) Tetraodon palustris, C–D) T. fangi, and E–F) T. cochinchinensis.
FIGURE 3 in Tetraodon palustris, a new freshwater pufferfish (Tetraodontiformes: Tetraodontidae) from the Mekong Basin of Thailand
FIGURE 3. Tetraodon fangi Pellegrin and Chevey, 1940. A-C) NIFI 04682, 62.8 mm SL, market near Tram Chim, Tam Nong, southern Vietnam: A) lateral, B) dorsal, and C) ventral views; D) MNHN 1940-42, 55.0 mm SL, holotype of T. fangi, Xano Canal, Vi-thanh, Rach-Gia Province, southern Vietnam.
FIGURE 4 in Tetraodon palustris, a new freshwater pufferfish (Tetraodontiformes: Tetraodontidae) from the Mekong Basin of Thailand
FIGURE 4. Tetraodon cochinchinensis (Steindachner, 1866), KUMF 8821, 76.8 mm SL, Lampao Dam, Ban Tha Ruea, Amphoe Yang Talat, Kalasin Province, Thailand: A) lateral, B) dorsal, and C) ventral views.
FIGURE 1 in Tetraodon palustris, a new freshwater pufferfish (Tetraodontiformes: Tetraodontidae) from the Mekong Basin of Thailand
FIGURE 1. Fresh specimen of Tetraodon palustris, KUMF 8834, holotype, male 72.1 mm SL, Nongkomkoh Swamp, Amphoe Mueang, Nong Khai Province, Thailand: A) lateral, B) dorsal, and C) ventral views.
FIGURE 2 in Tetraodon palustris, a new freshwater pufferfish (Tetraodontiformes: Tetraodontidae) from the Mekong Basin of Thailand
FIGURE 2. Preserved specimens of Tetraodon palustris, KUMF 8840, Ban Maet, Amphoe Sang Khom, Udon Thani Province: A-C) male 78.9 mm SL, D-F) female 77.2 mm SL.
Figure 3 in A new species of lowland tailorbird (Passeriformes: Cisticolidae: Orthotomus) from the Mekong floodplain of Cambodia
Figure 3. Multivariate vocal space of lowland tailorbirds in the O. chaktomuk – O. atrogularis – O. ruficeps– O. sepium clade from discriminant analyses based on 12 song traits. Scatter plot of the first two canonical functions that discriminated songs of O. chaktomuk, O. atrogularis, O. ruficeps and O. sepium. represent O. chaktomuk;, O. atrogularis;, O. ruficeps; +, O. sepium.
Figure 2 in A new species of lowland tailorbird (Passeriformes: Cisticolidae: Orthotomus) from the Mekong floodplain of Cambodia
Figure 2. Box plots of bill-length (to skull) divided by wing-length of (a) males of Orthotomus chaktomuk (n = 3), O. atrogularis nitidus (n = 15), O. ruficeps cineraceus (n = 14) and O. sepium sepium (n = 20); (b) females of O. chaktomuk (n = 2), O. a. nitidus (n = 10), O. r. cineraceus (n = 6) and O. s. sepium (n = 8); (c) males and females of O. chaktomuk (n = 5), O. a. nitidus (n = 25), O. r. cineraceus (n = 20) and O. s. sepium (n = 28). Small squares represent the median; box indicates 50% of samples; bars indicate maximum and minimum.
Plate 4 in A new species of lowland tailorbird (Passeriformes: Cisticolidae: Orthotomus) from the Mekong floodplain of Cambodia
Plate 4. Orthotomus chaktomuk (a–b) adult males in fresh plumage, 21 November 2012 (J. A. Eaton); (c–d) adult male in active moult (holotype), 8 August 2012 (NHMUK 2012.9.1; J. C. Eames); (e) adult male in worn plumage, 29 July 2012 (A. J. I. John); (f) adult female in fresh plumage, 21 November 2012 (J. A. Eaton); (g) adult female in worn plumage, 29 July 2012 (A. J. I. John); (h) immature male pre-moult, 16 July 2012 (A. J. I. John); (i) immature male in active moult, 29 July 2012 (A. J. I. John); (j) immature female in active moult, 8 August 2012 (NHMUK 2012.9.5; J. C. Eames); (k) subadult female in active moult, 9 August 2012 (NHMUK 2012.9.4; J. C. Eames).
Plate 3 in A new species of lowland tailorbird (Passeriformes: Cisticolidae: Orthotomus) from the Mekong floodplain of Cambodia
Plate 3. Specimens of the holotype of Orthotomus chaktomuk and closely related species (all males): (a) dorsal, (b) ventral and (c) lateral views (from left to right of O. chaktomuk, O. sepium sepium, O. ruficeps cineraceus and O. atrogularis nitidus). Harry Taylor © Natural History Museum, London.
Plate 2 in A new species of lowland tailorbird (Passeriformes: Cisticolidae: Orthotomus) from the Mekong floodplain of Cambodia
Plate 2. Specimens of O. chaktomuk: (a) dorsal, (b) ventral and (c) lateral views of the holotype and four paratypes (from left to right NHMUK 2012.9.1, 2012.9.2, 2012.9.3, 2012.9.4, 2012.9.5). Harry Taylor © Natural History Museum, London.
Plate 1 in A new species of lowland tailorbird (Passeriformes: Cisticolidae: Orthotomus) from the Mekong floodplain of Cambodia
Plate 1. Dorsal, ventral and lateral views of the holotype of O.chaktomuk. Harry Taylor © Natural History Museum, London.
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