7,183 research outputs found
Mackay, A W G, NX52249
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/400740Surname: MACKAY. Given Name(s) or Initials: A W G. Military Service Number or Last Known Location: NX52249. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 39243.220386
Item: [2016.0049.33033] "Mackay, A W G, NX52249
Trachymyrmex carinatus Mackay & Mackay. 1997
No full text<i>T. carinatus</i> Mackay & Mackay <p> <i>Trachymyrmex carinatus</i> Mackay & Mackay, 1997: 43. Holotype worker (MCZC) [examined], paratype workers, paratype queens, and males, 15km W Bellavista, Municipio Riva Palacio, Chihuahua, Mexico (AMNH, WPMC, LACM, MCZC, USNM) [examined], (additional paratypes in MZSP, Universidad Nacional Autónoma de México: Instituto de Ecología)</p>Published as part of <i>Rabeling, Christian, Cover, Stefan P., Johnson, Robert A. & Mueller, And Ulrich G., 2007, A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae), pp. 1-53 in Zootaxa 1664</i> on page 8, DOI: <a href="http://zenodo.org/record/180014">10.5281/zenodo.180014</a>
Estimating the economic implications for grazing properties in the Mackay Whitsunday catchments of practice changes to more sustainable landscapes
No full textIn the Mackay Whitsunday region, the dominant grazing based operations are small intensive systems that heavily utilise soil, nutrient and chemical management practices. To improve water quality entering the Great Barrier Reef, graziers are being encouraged to adopt improved management practices. However, while there is good understanding of the management changes required to reach improved practice classification levels, there is poor understanding of the likely economic implications for a grazier seeking to move from a lower level classification to the higher level classifications. This paper provides analysis of the costs and benefits associated with adoption of intensive grazing best management practices to determine the effect on the profitability and economic sustainability of grazing enterprises, and the economic viability of capital investment to achieve best management. The results indicate that financial incentives are likely to be required to encourage smaller graziers to invest in changing their management practices, while larger graziers may only require incentives to balance the risk involved with the transition to better management practices.grazing, management practices, incentives, Mackay Whitsunday, Farm Management,
Trachymyrmex carinatus Mackay & Mackay 1997
No full textT. carinatus Mackay & Mackay Trachymyrmex carinatus Mackay & Mackay, 1997: 43. Holotype worker (MCZC) [examined], paratype workers, paratype queens, and males, 15km W Bellavista, Municipio Riva Palacio, Chihuahua, Mexico (AMNH, WPMC, LACM, MCZC, USNM) [examined], (additional paratypes in MZSP, Universidad Nacional Autónoma de México: Instituto de Ecología) Diagnosis Worker: HL 0.8-1.0, HW 0.8-1.04, CI 96-108, SL 0.84-1.04, SI 100-105, ML 1.2-1.44. A relatively small species (HL 0.8-1, HW 0.8-1.04) with normally proportioned legs and antennal scapes (SI 100-105). Head more or less square (CI 96-108), sides subparallel posterior to the eyes, slightly tapering anteriorly between the eyes and mandibular insertions. Posterior margin weakly to moderately concave. Preocular carinae long, strongly curving mesially, and traversing nearly the entire distance between the eye and the frontal carinae, sometimes nearly touching the frontal carinae or appearing to do so. In full-face view, frontal lobes more or less symmetrical. Anterolateral promesonotal teeth moderate in size, pointed in dorsal view, projecting horizontally, not vertically. Anterior median pronotal tubercles small or reduced to denticles, or if toothlike short and broadly pyramidal. Propodeal teeth usually acute, about as long as the distance between their bases. Dorsal surface of body moderately tuberculate, tuberculi generally moderate in size, bearing recurved setae. First gastric tergite coarsely and conspicuously tuberculate. Color brownish to yellow to medium reddish-brown. Queen: HL 1.1-1.25, HW 1.15-1.4, CI 105-112, SL 1.1-1.15, SI 82-96, ML 1.9-2.1. As in worker diagnosis, except for typical caste-specific morphology of the mesosoma related to wing-bearing and head with minute ocelli. Dorsolateral pronotal teeth well-developed, tuberculate, sharply triangulate in dorsal view, often blunt-tipped in anterior view. Mesoscutum coarsely and irregularly rugulose, sometimes with faint longitudinal pattern, minutely tuberculate, and with abundant short, suberect, slightly recurved setae. Male: HL 0.72-0.81, HW 0.75-0.84, CI 104, SL 0.81-0.9, SI 104-111, ML 1.6-1.8. Somewhat variable in size, but presenting the following characters: Dorsolateral pronotal tooth absent in dorsal view, ventrolateral pronotal tooth small, broadly to narrowly triangular. Mesoscutum irregularly rugulose, interrugal spaces coarsely granulose. Preocular carina a prominent vertical ridge, remaining strongly developed at least until it reaches the midpoint of the posterior border of the antennal scrobe. In full-face view, posterior corners of head more or less rounded, their outlines obscured by the presence of several conspicuous toothlike tuberculi on each corner. Discussion In southern Arizona, T. carinatus co-occurs with T. arizonensis in mid elevation habitats. Workers and queens of these two species are easily distinguished by the distinctive frontal lobes of T. arizonensis and the preocular carinae nearly touching the frontal carinae in T. carinatus (not closely approaching the frontal carinae in T. arizonensis). T. carinatus also sometimes co-occurs with T. pomonae from which it may be separated by its larger size and symmetrical frontal lobes (lobes notably asymmetric in T. pomonae). In addition, workers of T. carinatus are superficially very similar to those of the allopatric T. septentrionalis, from which they may be separated by the characters given in the key. Etymology The species name "carinatus" refers to the well-developed carinae on the vertex of the workers ' and queens ' heads. Biology Trachymyrmex carinatus was described by Mackay & Mackay (1997), based on specimens collected in Chihuahua, Mexico, and the Chiricahua Mountains of southeastern Arizona. T. carinatus occurs in central and southern Arizona, western New Mexico and the Mexican States of Sonora, Chihuahua and Coahuila, often in sympatry with T. arizonensis. A single collection from the Kofa Mountains in southwest Arizona marks its westernmost limit. So far, T. carinatus has been encountered most commonly in the mountains of southern and central Arizona in mid elevation habitats (800-1800m). Colonies may be found in open exposed areas with sparse ground cover, such as washes or road-sides, but are especially abundant in oak-juniper-pinyon woodlands. The Kofa Mountains specimens were collected from a nest next to a water seep shaded by palm trees on the wall of a canyon at ~800 m elevation (R. Snelling, personal communication). Nests are sometimes found under stones, but are more often encountered in open ground, where they can be recognized by the circular shape of the nest crater, which contrasts with the more amorphous nest excavations of T. arizonensis. Excavations by C. Rabeling reveal that nests in the Chiricahua Mountains of southern Arizona have one to three fungus garden chambers, with the shallowest chamber only 5 cm beneath the soil surface. Colonies have fewer than 100 workers. Mating flights occur near dawn on mornings following summer rains (Mackay & Mackay 1997). Additional material examined: U.S.A.: Arizona, Cochise County: 5.5km W Portal (C Rabeling), Chiricahua Mtns. Southwestern Research Station (RA Johnson, UG Mueller, C Rabeling & SP Cover), Huachuca Mtns. Carr Canyon (SP Cover), Huachuca Mtns. Sunnyside Canyon (RR Snelling), Peloncillo Mtns. Cottonwood Canyon (WS Creighton); Gila County: Jct. USFS Rd. 287 & 287A (RA Johnson), Sierra Ancha Mtns. Pocket Creek (RA Johnson), Sierra Ancha Mtns. 14.8 mi N Salt River on Rt. 288 (RA Johnson, SP Cover); Pinal Co: USFS Rd. 287 at 0.4 mi SE Pinto Creek (RA Johnson), Santa Cruz Co: 1mi E Atascosa Lookout (RA Johnson), 1mi S American Peak, Harshaw Creek Rd (RA Johnson), Pajarito Mtns 0.1mi W Jct FSR 4181 on FSR39 (SP Cover), Pajarito Mtns Yanks Canyon (RA Johnson), 8.8 mi W JctI-19 Rt92 on FSR368 (SP Cover); Yuma Co: Kofa Game Refuge, 2mi SE Jct24 (P Mehlhop & RR Snelling); New Mexico, Sierra Co: Hillsboro (PS Ward); MEXICO: Coahuila: Puerto de Ventanillas (E & WP Mackay).Published as part of Rabeling, Ch., Cover, S. P., Johnson, R. A. & Mueller, U. G., 2007, A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)., pp. 1-53 in Zootaxa 1664 on pages 8-1
Bothroponera umgodikulula Joma and Mackay
No full textBothroponera umgodikulula Joma and Mackay Figures 22, 23 and Plate 10; Map 11 Bothroponera umgodikulula Joma and Mackay 2013: 1 - 8 (w) South Africa, Whittlesea; Schmidt and Shattuck: 2014: 77. Diagnosis: The worker of B. umgodikulula can be diagnosed by several morphological characters, such as the lack of sculpture on the tergum of the fourth abdominal segment (second gastral segment), which is mostly smooth and glossy. The propodeal spiracle is unusual in being nearly horizontal on the lateropropodeum. The worker of B. umgodikulula is also characterized by the largest body size among Bothroponera species, which is 14.80 - 15.65 mm. Worker Description: HL 3.00 - 3.10, HW 2.85 - 2.95, ML 1.50 - 1.70, EW 0.40 - 0.45, EL 0.45, SL 2.35 - 2.40, FL 3.65 - 3.75, WL 4.20, WPL 5.00 - 5.50, PL 1.30 - 1.35, PW 1.50 - 1.70, PH 1.75 - 1.80, CI 95.00 - 95.16, OI 15.78 - 15.25, MandI 50.00 - 54.83, SI 82.45 - 81.35, PetI 115 – 126. Head subquadrate; mandibles triangular, shorter than head length, smooth and glossy with scattered elongated coarse punctures and about 7 teeth; clypeus convex, “v” shaped, covered with striae, except medial area; anterior medial area raised, coarsely punctate on sides, smooth, glossy medially; scape reaches or extends slightly past posterior border of head; compound eyes relatively large; lower margins of frontal lobes smooth, upper part punctate; maximal frontal lobe width 1.10 - 1.20 mm; head coarsely foveolate; length of malar space on side of head (0.65 - 0.70 mm), length from upper edge of eye to edge of posterior lobe 1.35 - 1.50 mm. Pronotal shoulder rounded; petiole rounded, slightly narrowed anteriorly, slightly concave posteriorly; pronotum, dorsum of mesonotum, dorsum of propodeum coarsely foveolate, rough; dorsum of petiole, postpetiole coarsely foveolate, punctate; mesopleuron, lateropropodeum coarsely grooved, covered with striae, foveolae, punctures; antennae, legs, posterior edge of each gastral tergite shiny. Entire head, pronotum, mesonotum, propodeum, petiole, postpetiole covered with short (0.03 - 0.10 mm) fine golden hairs; hairs on underside of head range from 0.25 - 0.50 mm in length; ventral surface of postpetiole, fourth–seventh abdominal segments covered with relatively long (0.20 - 0.25 mm) golden suberect hairs. Head, pronotum, mesonotum, mesopleuron, propodeum, petiole, postpetiole, entire gaster black; legs, antennae, mandibles red; clypeus dark-brown. Comparison: The worker of Bothroponera umgodikulula is easily recognized by the horizontal propodeal spiracle on the lateropropodeum, while it is obliquely vertical in all of the other African Bothroponera species. The 4th abdominal segment (second gastral segment) is smooth and glossy in B. umgodikulula, conversely, the 4th abdominal segment of B. cavernosa is rough, moderately shiny with few scattered hairs and fine poorly defined striae; this structure is moderately smooth and shiny (less than B. umgodikulula) with a few scattered punctures in B. montivaga. The other taxa that can be confused with B. umgodikulula are B. laevissima and B. aspera, which both have a 4th abdominal segment that is smooth and shiny, similar to B. umgodikulula. The unique sculpture of these three species simplifies their separation. The surface from the head to the postpetiole is smooth and shiny with few scattered punctulae in B. laevissima and is shiny, rough with dense, shallow punctures in B. aspera, but is coarsely foveolate in B. umgodikulula. The total length of B. umgodikulula is large (14.80 - 15.65 mm) compared to B. cavernosa (11.90 mm) and B. montivaga (12.20 - 12.65 mm). In fact, B. umgodikulula has the largest body size among the other species of the B. pumicosa species complex (e.g. B. granosa 13.75 - 14.50 mm, B. strigulosa 12.20 mm, B. laevissima 11.80 - 13.00 mm, B. aspera 11.70 - 12. 70 mm, B. pumicosa 11.00 - 11.65 mm, B. cariosa 11.50 mm and B. berthoudi 9.60 - 12.75 mm). The anterior medial margin of the clypeus is “v” shaped in B. umgodikulula similar to that of B. granosa, B. cavernosa, B. montivaga and B. aspera, conversely, the anterior medial margin of the clypeus is “u” shaped in B. cariosa, B. strigulosa, B. pumicosa, B. laevissima and B. berthoudi. The anterior medial raised area of the clypeus of B. umgodikulula is completely smooth (lacking a carina) shiny, but sculptured and punctate on the sides of the medial raised area. The anterior medial raised area of the clypeus of B. granosa has a sharp clypeal carina whereas it is partially carinate in B. cavernosa and B. montivaga. Material examined Type material: SOUTH AFRICA: Eastern Cape Province, Bulhoek, klaver-clanw [Whittlesea], Bulhoek at 32°10’0’’ S; 26°49’0’’ E, Mus. Expd. Oct. 1950, identified as Bothroponera cavernosa Roger, 1860, F. W. G. (1 w holotype, MCZC) and (1 w paratype, # C005835 Iziko). Non-type material: SOUTH AFRICA: Western Cape Province, Hopefield, 33°03′56″S 18°21′03″E, identified as Bothroponera cavernosa Roger, Det. G. Arnold (1w BMNH). Distribution: Whittlesea and Hopefield areas in South Africa. Biology and habitat: The type specimens were collected in Whittlesea city in South Africa. This area is located in the Eastern Cape Province, but the additional material examined (one specimen) was collected in Hopefield city in the Western Cape Province. Hopefield is a small village situated 90 miles north of Cape Town and about 24.14 km [15 miles] east of Saldanha Bay (Singer, 1954). The Fynbos biome is dominant in this area (Rouget et al., 2004), and it is one of the threatened ecosystems in South Africa (Farrier et al., 2013). The ecological importance of the Hopefield area results from the soil structure, water permeability, climatic influence and vegetational cover. The area is characterized by spreading of several alien invasive plants such as the alien wattles Acacia cyclops (Rooikrans), A. longifolia (long-leaf wattle), A. saligna (Port Jackson), a number of Eucalyptus species, Manitoka (Myoporum montanum) and introduced prickly pear cactus (Opuntia sp.). Also many endemic and threatened plant taxa are present (Department of Environmental Affairs & Development Planning 2011). This type of mixed habitat is likely to include many species of insects such as tropical ants.Published as part of Ama JOma & Wp MacKay, 2015, Revision of the African Ants of the Bothroponera pumicosa Species Complex (Hymenoptera: Formicidae: Ponerinae), pp. 538-563 in Sociobiology 62 (4) on pages 560-561, DOI: 10.13102/sociobiology.v62i4.845, http://zenodo.org/record/26990
Proceedings of the Sixth Arctic Environmental Workshop, held at Fairmont Hot Springs, B.C., Canada, April 17 to 20, 1977.
No full textsponsored by the Arctic Petroleum Operators Association and the Canadian Petroleum Association ; edited by J.G. Gainer, W.J. Logan, D. Mackay
An evolutionary economic perspective on technical change and adjustment in cane harvesting systems in the Australian sugar industry
No full textAustralian sugar-producing regions have differed in terms of the extent and rate of incorporation of new technology into harvesting systems. The Mackay sugar industry has lagged behind most other sugar-producing regions in this regard. The reasons for this are addressed by invoking an evolutionary economics perspective. The development of harvesting systems, and the role of technology in shaping them, is mapped and interpreted using the concept of path dependency. Key events in the evolution of harvesting systems are identified, which show how the past has shaped the regional development of harvesting systems. From an evolutionary economics perspective, the outcomes observed are the end result of a specific history.Crop Production/Industries,
Intrafamilial genotyping of Helicobacter pylori from faecal DNA
No full textHelicobacter pylori infection, often acquired in early childhood, is a global cause of undernutrition, gastritis, peptic ulcer disease and gastric carcinoma. This study tested the feasibility of using H. pylori shed in the faeces as a source of DNA for non-invasive epidemiological studies. H. pylori DNA was chemically recovered and isolated using a specific biotinylated oligonucleotide probe with magnetic capture from 28 H. pylori positive faecal samples obtained from children attending hospital for the investigation of suspected H. pylori infection, together with close family members. Random amplification of polymorphic DNA (RAPD) was subsequently used to discriminate each isolate. 93% of stool samples selected were typeable. Parent, child and sibling samples were compared and similarities determined. Phylogenetic analysis showed that H. pylori DNA obtained from the faeces can be used to genotype individual strains, offering a means of studying intrafamilial transfer of this microorganism
Erratum: Human settlement of East Polynesia earlier, incremental, and coincident with prolonged South Pacific drought (Proceedings of the National Academy of Sciences of the United States of America(2020)117(8813-8819)DOI: 10.1073/pnas.1920975117)
No full textCorrection for "Human settlement of East Polynesia earlier, incremental, and coincident with prolonged South Pacific drought," byDavid A. Sear,Melinda S. Allen, JonathanD. Hassall, Ashley E. Maloney, Peter G. Langdon, Alex E. Morrison, Andrew C. G. Henderson, Helen Mackay, Ian W. Croudace, Charlotte Clarke, Julian P. Sachs, Georgiana Macdonald, Richard C. Chiverrell, Melanie J. Leng, L. M. Cisneros-Dozal, and Thierry Fonville, which was first published April 6, 2020; 10.1073/pnas.1920975117 (Proc. Natl. Acad. Sci. U.S.A. 117, 8813-8819). The authors note that Emma Pearson should be added to the author list after Thierry Fonville. Emma Pearson should be credited with performing research and analyzing data. The corrected author line, affiliation line, and author contributions appear below. The author line, affiliations, and contributions sections have been corrected online. The authors note that the following statement should be added to the Acknowledgments: "E.P. acknowledges NERC grant BRIS/ 81/0415"
Correction for Sear et al., Human settlement of East Polynesia earlier, incremental, and coincident with prolonged South Pacific drought.
No full textCorrection for "Human settlement of East Polynesia earlier, incremental, and coincident with prolonged South Pacific drought," byDavid A. Sear,Melinda S. Allen, JonathanD. Hassall, Ashley E. Maloney, Peter G. Langdon, Alex E. Morrison, Andrew C. G. Henderson, Helen Mackay, Ian W. Croudace, Charlotte Clarke, Julian P. Sachs, Georgiana Macdonald, Richard C. Chiverrell, Melanie J. Leng, L. M. Cisneros-Dozal, and Thierry Fonville, which was first published April 6, 2020; 10.1073/pnas.1920975117 (Proc. Natl. Acad. Sci. U.S.A. 117, 8813-8819). The authors note that Emma Pearson should be added to the author list after Thierry Fonville. Emma Pearson should be credited with performing research and analyzing data. The corrected author line, affiliation line, and author contributions appear below. The author line, affiliations, and contributions sections have been corrected online. The authors note that the following statement should be added to the Acknowledgments: "E.P. acknowledges NERC grant BRIS/ 81/0415"
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