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21.
《Journal of Natural History》2012,46(8):1169-1179
Two new genera are described for some species of Cryptocephalinae from the Australasian region. Melatia is erected for 29 species hitherto described in Cadmus Erichson, Cryptocephalus Geoffroy and Lachnabothra Saunders, from New Guinea and nearby islands; Ditropidella for four species described in Coenobius Suffrian and Ditropidus Erichson, from southern Australia. 相似文献
22.
《Journal of Natural History》2012,46(2):197-239
The Australasian genus Tachyphron Brown is revised, and two new New Guinean genera, Deuterothynnus gen. n. and Heligmothynnus gen. n., described. Fifteen species are included in Tachyphron of which seven are described as new (T. aculeatus sp. n., T. athertonensis sp. n., T. mantonensis sp. n., T. neosubfragilis sp. n., T. nigrisetatus sp. n., T. planus sp. n. and T. townsvillensis sp. n.), and a further two, Aelurus comatus Smith and Aelurus fragilis Smith, transferred from Tachynomyia. Thynnus insularis Smith is transferred from Tachynomyia Guérin to Deuterothynnus and a further three new species, D. fulvicentratus sp. n., D. fulvisetatus sp. n. and D. parallelus sp. n. described. Aelurus atratus Cameron and Takyomyia sabronensis Kimsey are transferred from Tachynomyia and Tachyphron, respectively, to Heligmothynnus and a further two new species, H. microspinus sp. n. and H. neoaratus sp. n. described. T. megacephala (Turner) is synonymized with Tachynoides flavopicta (Ritsema) and, therefore, removed from Tachyphron. A key to the Ariphron group of genera is provided, as well as keys to the males of Tachyphron, Deuterothynnus and Heligmothynnus, although the male of D. insularis is associated tentatively with the female holotype only on the basis of collection records. Only the females of D. insularis, T. armidalensis Brown and T. subtriangularus Brown are known, the latter two being described for the first time. Evidence is presented to suggest that T. subtriangularus may be bivoltine in northern Australia. 相似文献
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24.
对黑豚体表毛虱进行了调查和研究,发现黑豚体表有大量的毛虱,经鉴定为黑豚毛虱(Damalinia black),属食毛目(Mallophaga)、毛虱科(Trichodectidae)、毛虱属(Damalinia).并选用4种药物(溴氰菊酯、阿维菌素、百部、螨净)进行防治.结果溴氰菊酯、阿维菌素对黑豚毛虱驱杀效果达100%. 相似文献
25.
J. van der Velden P. Borgdorff G. J. M. Stienen 《Cellular and molecular life sciences : CMLS》1999,55(5):788-798
To investigate whether during cardiac hypertrophy changes occur in contractile protein composition and in mechanical and
energetic properties of the myocardium, contractile protein composition, isometric force and adenosine triphosphate (ATP)
consumption were studied in control and hypertrophied guinea-pig hearts. Cardiac hypertrophy was induced by adding minoxidil
(120 or 200 mg/l) to the drinking water. Protein analysis was performed by one-dimensional gel electrophoresis. The myosin
heavy-chain (MHC) composition was determined in an enzyme-linked immunosorbent assay (ELISA). ATP consumption and force development
were simultaneously measured during isometric contraction in chemically skinned trabeculae. Histochemical analysis of cross-sectional
area of cardiomyocytes and interstitial space was performed on the left ventricular tissue of 200 mg/l minoxidil-treated and
control guinea pigs. Minoxidil treatment (120 and 200 mg/l) significantly increased left ventricular dry weight normalized
for body weight by 19 ± 4 and 24 ± 4%, respectively. No significant differences were found in the cellular cross-sectional
area, while interstitial space was slightly decreased in minoxidil-treated hearts. In left ventricular trabeculae of 200 mg/l
minoxidil-treated guinea pigs, ATPase activity was slightly less than in those of control guinea pigs, whereas force did not
differ significantly. Calcium sensitivity of force and ATPase activity were not affected by minoxidil treatment. Gel electrophoresis
revealed no difference in contractile protein composition, but a tendency towards a lower amount of α-MHC in the minoxidil-treated
hearts was found in ELISA.
Received 1 February 1999; accepted 15 March 1999 相似文献
26.
F. R. Heller 《Cellular and molecular life sciences : CMLS》1984,40(12):1373-1375
Summary In various organs of the guinea pig, the total cholesterol content of an organ was significantly correlated with the percentage of esterified cholesterol present in this organ. Cholesterol esterifying capacity was shown in most organs, with highest activities in the adrenals, the spleen and the liver. The significant correlation found between the cholesteryl ester content of an organ and its acyl cholesterol acyltransferase activity suggests a possible role of this enzyme in determining the level of the total and esterified cholesterol in a tissue.This work was supported by a grant Crédit aux Chercheurs du Fonds National de la Recherche Scientifique of Belgium.Acknowledgments. I am indebted to Prof. C. Harvengt for his stimulating interest and helpful suggestions. I wish to thank Y. van Nieuwenhuyze and J. Costermans for their valuable laboratory assistance and Dr H. Baudon for pathological studies. 相似文献
27.
《Journal of Natural History》2012,46(8):1173-1237
A new species group of Euops Schoenherr from the highlands of New Guinea is described and referred to as the ‘pygmaeus-group’. It is comprised of 14 species which, except for E. singularis VOSS, are described as new: E. anggiensis sp. n., E. bicolor sp. n., E. convexus sp. n., E. fraterculus sp. n., E. ibelensis sp. n., E. kurulu sp. n., E. nothofagi sp. n., E. parvus sp. n., E. paraconvexus sp. n., E. platyrostris sp. n., E. porulosus sp. n., E. pygmaeus sp. n., and E. sedlaceki sp. n.. Most of the species are of relatively small body size. They form a monophyletic group characterized by the synapomorphic loss of the ventral suture between the galea and palpifer of the maxilla. Two other groups are recognized, the eucalypti-group and the quadrifasciculatus-group. They are believed to be closely related to the pygmaeus-group and all three species groups together are referred to as the ‘pygmaeus-complex’. A cladistic analysis of the pygmaeus-group is performed. All species with host records are reported to feed on the fresh leaf flush of Nothofagus. This is the first record of a group of leaf-chewing arthropods restricted to the subgenus Brassospora of Nothofagus. 相似文献
28.
Stephen R. Goldberg Charles R. Bursey Fred Kraus 《Journal of Natural History》2016,50(31-32):2005-2020
In an attempt to better document the invertebrate biodiversity of the threatened fauna of Papua New Guinea (PNG), 208 microhylid frogs representing 13 species collected in 2009 and 2010 in PNG were examined for endoparasitic helminths. This study found mature individuals of one species of Digenea (Opisthioglyphe cophixali), adults of two species of Cestoda (Nematotaenia hylae, Cylindrotaenia sp.) and cysticerci of an unidentified cestode species; adults of nine species of Nematoda (Aplectana krausi, Bakeria bakeri, Cosmocerca novaeguineae, Cosmocercella phrynomantisi, Falcaustra papuensis, Icosiella papuensis, Ochtoterenella papuensis, Parathelandros allisoni, Parathelandros andersoni), and one species of Acanthocephala (cystacanths in the family Centrorhynchidae). There was a high degree of endemism among the helminth species infecting the microhylids, with 83% of the species known only from PNG. Yet the helminth fauna infecting Papuan microhylids are generalists with direct life cycles (no intermediate host) that also infect other anuran species. We thus conclude infection is more dependent upon habitat conditions than diet. Twenty-nine new host records are reported. 相似文献
29.
《Journal of Natural History》2012,46(29-30):1923-1935
Four hundred and forty‐six individuals representing 11 species of Emoia (Scincidae), E. atrocostata, E. battersbyi, E. caeruleocauda, E. impar, E. jakati, E. kordoana, E. longicauda, E. obscura, E. pallidiceps, E. physicae and E. popei, collected in Papua New Guinea were examined for helminths. Two species of Cestoda (Adenobrechmos greeri, Cylindrotaenia hickmani); five species of Digenea (Mesocoelium monas, Paradistomoides gregarium, Saurokoilophilia kinsellai, Spelotrema brevicaeca, Zeylanurotrema sphenomorphi); 14 species of Nematoda, (gravid individuals of Abbreviata oligopapillata, Hedruris hanleyae, Kreisiella chrysocampa, Maxvachonia adamsoni, Meteterakis crombiei, Parapharyngodon maplestoni, Physaloperoides milnensis, Pseudoreticularia dipsarilis, Raillietnema nanus, Skrjabinodon sp. 1, Skrjabinodon sp. 2 and larvae (in cysts) of Abbreviata sp., Acuariidae gen. sp., and Riticulariidae gen. sp.) were found. The mean helminth species richness for infected skinks was 6.4±4.7 SD (range 1–14 species). Fifty‐three new host records are reported. 相似文献
30.
《Journal of Natural History》2012,46(11):1707-1736
The troidine papilionid genus Ornithoptera is shown to be distinct from Troides In order to reappraise the interrelationships of the member species of Ornithoptera, and to test the resultant theory of their evolution against biogeographical data, the genus is revised using Hennigian cladistic methodology through computer analysis. The input data for this was drawn equally from immature stages and adult characters. A single cladogram hypothesising the likely phylogeny of the Ornithoptera species was generated. With minor weighting of a single important adult character, a further two cladograms were generated, one of which is similar to hypotheses proposed by previous workers. Based on these findings, and on ecological data, notably larval foodplant relations with Aristolochiaceae, as well as present-day biogeographical data, a new theory of the origin and evolution of Ornithoptera is presented which fits well Gondwanan vicariance events ascertained by geological studies: essentially that Ornithoptera evolved on northward drifting Australia, allopatrically from Troides on the Indian plate, and therefore that Ornithoptera did not reach the Australian Subregion via Troides-like ancestors in Southeast Asia as has been previously postulated. As ‘living fossils’ representative of an ancient, Gondwanaland-derived, austral faunal element, the Ornithoptera should be regarded even more highly in terms of their ‘conservation value’. 相似文献