15,252 research outputs found
A Survey For Chytrid Fungus In Thai Amphibians
No full textMcLeod, David S., Sheridan, Jennifer A., Jiraungkoorskul, Wannee, Khonsue, Wichase (2008): A Survey For Chytrid Fungus In Thai Amphibians. Raffles Bulletin of Zoology 56 (1): 199-204, DOI: 10.5281/zenodo.533973
Re-evaluating the taxonomic status of Chiromantis in Thailand using multiple lines of evidence (Amphibia: Anura: Rhacophoridae)
No full textAowphol, Anchalee, Rujirawan, Attapol, Taksintum, Wut, Arsirapot, Sutipong, Mcleod, David S. (2013): Re-evaluating the taxonomic status of Chiromantis in Thailand using multiple lines of evidence (Amphibia: Anura: Rhacophoridae). Zootaxa 3702 (2): 101-123, DOI: 10.11646/zootaxa.3702.2.
FIGURE 6 in " Same-same, but different ": an unusual new species of the Limnonectes kuhlii Complex from West Sumatra (Anura: Dicroglossidae)
No full textFIGURE 6. Distribution of samples of Limnonectes siskdagu used in this study. Holotype indicated with star. Open square represents specimens collected from Batu Layang and identified as "Lineage 2" in McLeod (2010).Published as part of Mcleod, David S., Horner, Stephani J., Husted, Colin, Barley, Anthony & Iskandar, Djoko, 2011, " Same-same, but different ": an unusual new species of the Limnonectes kuhlii Complex from West Sumatra (Anura: Dicroglossidae), pp. 52-64 in Zootaxa 2883 on page 61, DOI: 10.5281/zenodo.20160
Limnonectes isanensis McLeod, Kelly 2012
No full textLimnonectes isanensis McLeod, Kelly, and Barley, 2012 Specimens examined. Five tadpoles of L. isanensis (ZMKU AM 0 1140 [n= 3], ZMKU AM 0 1141 [n= 1] and ZMKU AM 0 1142 [n= 1]) were collected from Ron Ton Son Stream, Phu Luang Wildlife Sanctuary, Loei Province (17 ° 17 ' 53.2 "N 101 ° 31 ' 22.1 "E, 1,361 m ASL). Specimens were collected by Anchalee Aowphol, Attapol Rujirawan, Natee Ampai, Korkhwan Termprayoon, and Somphouthone Phimmachak on 28 July 2012 (2100 hr) and 11 December 2012 (2045 hr). A single tadpole specimen (ZMKU AM 01142; stage 38) was photographed in life and illustrated (Figs. 6–7). A single adult specimen (ZMKU AM 01139; Fig. 5 A) was collected at Nam San Noi Stream, Phu Luang Wildlife Sanctuary, Loei Province (17 ° 20 '01.0" N 101 ° 30 '35.0"E, 915m ASL) by Anchalee Aowphol, Attapol Rujirawan, Natee Ampai and Somphouthone Phimmachak on 26 September 2012 (2030 hr). Identification. Tadpole (ZMKU AM 01140) has an uncorrected pairwise divergence of 0.18 % from an adult specimen (ZMKU AM 01139). Morphology of the adult specimen of L. isanensis matched the original description (McLeod et al. 2012). Measurement of tadpole. Morphometric measurements (in mm) at Gosner (1960) developmental stage 38: BH = 5.9; BL = 13.4; BW = 7.9; IND = 2.8; IOD = 4.0; IOS = 2.6; MTH = 6.8; ODW = 2.4; SS = 7.7; TAL = 26.9; TL = 40.3; TMH = 3.1; TMW = 3.2; HUF = 2.2; HLF = 1.5. Variation within the series. Mensural and ratio values for external morphology of the tadpole series (Gosner stages 30–38; n = 5) is provided in Table 1. External morphology of the tadpoles remains generally consistent throughout the developmental stages in this series. In all specimens the sinistral spiracle and intestine coils were visible in lateral and ventral views. In early stages 30–35, the tail is weakly mottled whereas in later stages (e.g., Gosner 38), the tail is much more densely mottled. Description of tadpole. Body moderate (Fig. 7 A). From above, body oval, length twice width, wider anteriorly than posteriorly, snout rounded; in profile body depressed, sloping steeply from level of eyes, oral disc anteroventral. Nares are small, rim slightly elevated, anterodorsally positioned, closer to the snout than eye. Eyes dorsolaterally positioned at the end of the anterior quarter of body (closer to nares than spiracle), widely spaced relative to nares (IND /IOD = 0.70), not visible from ventral view. Single, sinistral, tubular spiracle, opening below body axis near midpoint of body SS = 7.7 mm (Fig. 7 A–B). Vent tube dextral, opens midway between muscle and edge of ventral fin; both of fins slightly convex (Fig. 7 B). Tail musculature well developed, tail tapering gradually to pointed tip. Fin beginning at root of tail, margin of dorsal fin slightly higher than ventral fin and convex, ventral fin parallel to dorsal fin, TMH = 3.1 mm. Color Pattern. Color in life (Stage 38, Fig. 7): body pale brown to yellowish with slightly darker brown pigment. Many small, thin, golden-yellow stripes on the sides of body and on dorsum of tail musculature. Dorsum and tail with many dark brown to black spots. Oral disc pale white. Venter of body nearly transparent, lightly flecked with gold; centro-sinistral intestine visible. Ventral surface of tail is semitransparent to white; caudal musculature faintly pale brown in dorsal view, with the upper and lower fins transparent. In preservative, coloration similar to specimen in life, pale yellowish stripes on ventrolateral body, dark brown pigmentation on tail remains distinctly visible. Oral disc. Oral disc (Fig. 6 B), anteroventral, 5–6 marginal papillae at corners of upper labium, papillae on upper labium larger than lower lip, upper and lower jaw sheathes medium, slight medial convexity, margin serrated, black. Separation between individual denticles narrow, LTRF: 2 (1)/ 3 (1); first row without gap, second row sub-equal left and right. The first lower labial tooth row with narrow median gap. Third lower labial tooth row nearly half the length of first and second rows. Ecology. Tadpoles were collected from a shallow pool (12–15 cm deep) at the edge of a permanent stream (4 m wide, 60 cm deep) at 0 845 hr on 11 December 2012 (Fig. 5 B). Ambient air temperature = 22.8 °C, surface water temperature = 17.9 °C, water pH = 6.14, and stream current was slow (0.1 m /s). Tadpoles were abundant at the study site during the study period. During the daytime, tadpoles were occasionally seen in the water column, but were predictably found buried in the gravel substrate or hiding beneath clumps of leaves at the bottom of the pools in the stream. When disturbed, tadpoles were observed to swim quickly to new hiding places. At nighttime, tadpoles were active in the water column. Egg masses containing 35–40 ova with transparent external jelly were found in clumps stuck to rocks in stream or to stream bank at the same location as the tadpoles during December (2012) and September (2013). Individual eggs encased in a jelly capsule measured 4–5 mm. Adult males of L. isanensis were found perched either on the ground amidst leaf litter, or on rocks on the bank of the stream at this site. Comparisons. McLeod et al. (2012) described the PLWS endemic, L. isanensis, based on adult morphology, but provided no tadpole information. Our description of the tadpole of L. isanensis closely match the general characteristics of genus Limnonectes tadpoles described by Altig & McDiarmid (1999). McLeod (2008) provided morphometric data from a series of tadpoles and the description of the external morphology of a Gosner stage 40 tadpole of L. megastomias from Sa Kaeo Province, in eastern Thailand. Limnonectes megastomias is the sister taxon of L. isanensis and adults of both species are morphologically very similar (McLeod et al. 2012). Despite this overall adult similarity, the tadpoles of L. megastomias and L. isanensis differ notably in several features. Measurement proportion of two species is shown in Table 2. In overall size, the tadpole of L. isanensis seems to be smaller than L. megastomias, particularly during early stages of development (TL = 27.1–40.3 mm and 31.3–39.8 mm, respectively). Nevertheless, relative to total length, the body of L. isanensis appears to be larger than L. megastomias. When comparing tadpoles of the same developmental stage, Limnonectes isanensis was found to have a significantly greater body height (BH), the ratio of body height (BH) to body length (BL) and consequently in the ratio of body width (BW) to body length (BL) than L. megastomias (P <0.05). Oral disc structure and pattern of pigmentation on the body tail were also different in two species. Marginal papillae on the upper labium in L. isanensis are arranged in single row with about 5–7 papillae per side, two rows of papillae on the lower labium with about 20–22 papillae per side, a very narrow gap in the posterior marginal papillae, and the occurrence of two submarginal papillae ventrally. Tadpoles of L. megastomias have a single row of upper labial papillae, about 11–13 thick papillae of upper labium per side and about 28–30 papillae per side on lower labium arranged in two rows with narrow median interruption (but broader than in L. isanensis). The caudal musculature and fins are more heavily pigmented in L. isanensis (dark brown to black on posterior half of tail) than in L. megastomiasis (faint brown spots scattered over length of tail). Additionally, tadpoles of L. megastomias have a median dark-brown horizontal bar through eye, which L. isanensis lacks.Published as part of Ampai, Natee, Rujirawan, Attapol, Arkajag, Jirachai, Mcleod, David S. & Aowphol, Anchalee, 2015, Description of the tadpoles of two endemic frogs: the Phu Luang cascade frog Odorrana aureola (Anura: Ranidae) and the Isan big-headed frog Limnonectes isanensis (Anura: Dicroglossidae) from northeastern Thailand, pp. 508-520 in Zootaxa 3981 (4) on pages 514-517, DOI: 10.11646/zootaxa.3981.4.3, http://zenodo.org/record/24334
Newton's Laws
No full textAuthored and curated by David P. Stern, this series of web pages, part of "From Stargazers to Starships," describes Newton's three laws of motion and the two concepts on which they are based, force and inertia. The author breaks down the page in this fashion: the concept of force, motion against outside resistance, and motion with significant resistance. The author also provides additional links for further study on the life of Issac Newton. A lesson plan for instructors is also provided
Fig. 1 in A Survey For Chytrid Fungus In Thai Amphibians
No full textFig. 1. Predicted distribution of the fundamental niche of Batrachochytridium dendrobatidis in Southeast Asia (redrawn from Ron, 2005). Dark areas represent those regions where niche presence was predicted by more models (i.e., Overlap Index 1 means that 10 of 10 models predicted niche presence; 0 means that none of the 10 models predicted niche presence). Models are based on known New World occurrences of B. dendrobatidis.Published as part of McLeod, David S., Sheridan, Jennifer A., Jiraungkoorskul, Wannee & Khonsue, Wichase, 2008, A Survey For Chytrid Fungus In Thai Amphibians, pp. 199-204 in Raffles Bulletin of Zoology 56 (1) on page 200, DOI: 10.5281/zenodo.533973
C.C. Slaughter's Lazy S Ranch in Cochran and Hockley counties, 1898-1921.
No full textLikely added to or created for the author's thesis: "A Cattle Kingdom on Texas' Last Frontier: C. C. Slaughter's Lazy S Ranch" (Texas Tech University, 1970).Scale approximately 1:337,920 (W 102°59'24"--W 102°18'53"/N 33°50'54"--N 33°24'07")The map illustrates the 250,000-acre holdings of C.C. Slaughter, known as the "Cattle King of Texas," before the ranch's liquidation and subdivision beginning in 1921 (following his death in 1919)
Dr. David Salisbury – Faculty Author Interview
No full textDavid Salisbury, Assistant Professor of Geography and the Environment, discusses his recent article, “Fronteras Vivas or Dead Ends? The Impact of Military Settlement Projects in the Amazon Borderlands”, in the Journal of Latin American Geography. This article describes a case study in the Peruvian Amazon which explores the natural resource management, household economics, and political geography of a borderland military base and associated settlement
Improved Methods for the Diagnosis and Control of Bluetongue in Small Ruminants in Asia and the Epidemiology and Control of Bovine Ephemeral Fever in China
No full textLivestock Production/Industries,
Remembering BC\u27s 1983 Solidarity Uprising — with David Spaner
No full textBio: David Spaner has worked as a feature writer, movie critic, reporter, and editor for numerous newspapers and magazines. David\u27s also been a cultural/political organizer (Yippie, manager of the punk band The Subhumans). He is the author of Dreaming in the Rain and Shoot It! Hollywood, Inc. and the Rising of Independent Film.In 2021, Spaner published a behind-the-scenes book about the Solidarity resistance movement, Solidarity: Canada\u27s Unknown Revolution of 1983 (Ronsdale 2021) documenting the event using intimate storytelling and melding cultural and rebel politics to provide insight into the conflicts that are still with us. It was the largest political protest in the province\u27s history and threatened to end in an all-out general strike. Resources: Solidarity: Canada\u27s Unknown Revolution of 1983 (Ronsdale 2021): https://ronsdalepress.com/all-books/solidarity/SHOOT IT! Hollywood Inc. and the Rising of Independent Film (Arsenal Pulp Press 2012): https://arsenalpulp.com/Books/S/Shoot-ItDreaming in the Rain: How Vancouver Became Hollywood North by Northwest (Arsenal Pulp Press 2002): https://arsenalpulp.com/Books/D/Dreaming-in-the-Rai
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