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Assiminea affinis (Mousson ms) Böttger, 1887(=A. queenslandica [Pilsbry ms] Thiele, 1927), a previously unrecognised Australian assimineid species, is described anatomically and allocated to the genus Taiwanassiminea Kuroda and Habe, 1950, first described from Taiwan. This is the first record of the genus from Australia. Taiwanassiminea affinis is found in slightly brackish waters in the upper tidal reaches of the larger rivers from northern Queensland to the Shoalhaven River in the southern half of New South Wales. The terrestrial Cyclotropis Tapparone-Canefri, 1883, which has somewhat similar shell and radular characters, is redefined and several species (Assiminea bedaliensis Rensch, 1934; Paludinella javana Thiele, 1927; Assiminea lentula, A. riparia and A. sororcula, all Benthem Jutting, 1963) previously included in Cyclotropis are transferred to Taiwanassiminea. 相似文献
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Verónica Núñez 《Molluscan research.》2017,37(1):17-30
Potamolithus Pilsbry &; Rush, 1896 is a species-rich genus, endemic to South America, with many of its species considered Vulnerable due to a restricted distribution; half of them are called into question, since they are known only from their shells. The purpose of this article is to describe the anatomy of P. paranensis (Pilsbry, 1911) and P. simplex (Pilsbry, 1911) from the Argentinean Misiones province, and to evaluate the value of anatomical features in this genus. These two species differ in penis morphology and pigmentation, ctenidium length, and relative position of the opening of the pallial oviduct, seminal receptacle and bursa copulatrix. Consequently, it appears that anatomical data could help solve taxonomic conflicts that are currently unresolved by shell morphology alone. 相似文献
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Alejandra Rumi Diego Eduardo Gutiérrez Gregoric Néstor Landoni Javiera Cárdenas Mancilla Sandra Gordillo Jorge Gonzalez 《Molluscan research.》2015,35(3):143-152
The Glacidorbidae, a family restricted to the Gondwanan realm (Tasmania, southeastern and southwestern Australia, and southern Argentina and Chile), previously included five genera with 20 identified species; 19 of them are Australian, with one genus and species, Gondwanorbis magallanicus (Meier-Brook & Smith, 1976), from South America. Here we describe two new species of Gondwanorbis: Gondwanorbis fueguensis n. sp. from the freshwater gastropods province of Southern Patagonia (Argentina) and Gondwanorbis tricarinatus n. sp. from Chile, and a new genus and species from the freshwater gastropods province of northern Patagonia (Argentina), Patagonorbis nahuelhuapensis n. sp and n. gen.http://www./zoobank.org/urn:lsid:zoobank.org:pub:62EA0972-3AEF-4188-8E6D-F10895CE2BEF 相似文献
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Saxifraga marginata Sternb. is divided into three subspecies:S. m. subsp.marginata, S. m. subsp.bubakii (Rohlena)Chrtek etSoják,S. m. subsp.karadzicensis (Degen etKo?anin)Chrtek etSoják (environments of Skopje, Macedonia). 相似文献
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Dagmara Baraniak Piotr Ruszkowski Daniel Baranowski Grzegorz Framski Jerzy Boryski 《Nucleosides, nucleotides & nucleic acids》2013,32(12):980-1005
AbstractTwo series of novel fluorinated nucleosides dimers with an unnatural 1,2,3-triazole linkage were synthesized. The obtained molecules were prepared using “click” chemistry approach based on copper(I) catalyzed Huisgen azide–alkyne cycloaddition. It was performed between 3′- and 5′-azido-nucleosides as the azide components, and the 3′-O- and 5′-O-propargyl-nucleosides as the alkyne components. Based on analysis of the 3JHH, 3JH1′C2 and 3JH1′C6 we estimated conformational preferences of sugar part and orientation around glycosidic bond. All described nucleosides dimers analogs were characterized by spectroscopic methods and evaluated for their in vitro cytotoxicity in three human cancer cell lines: cervical (HeLa), oral (KB) and breast (MCF-7). 相似文献
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Nguya K. Maniania Larry J. Vaughan Elizabeth Ouna 《Biocontrol Science and Technology》2008,18(9):913-920
Second instar nymphs of African migratory locust, Locusta migratoria migratorioides, and desert locust, Schistocerca gregaria, were tested for their susceptibility to the microsporidium pathogen Johenrea locustae (Lange et al. 1996, Journal of Invertebrate Pathology, 68, 28) in the laboratory. Spores of J. locustae were produced from live L.m. migratorioides, a conspecific to L. migratoria capito. Locusta m. migratorioides and S. gregaria were exposed to wheat seedlings sprayed with 20 mL of three concentrations (106, 107 and 108 spores mL?1). Both second-instar nymphs of L.m. migratorioides and S. gregaria were susceptible to J. locustae infection at the three concentrations. There was no effect of concentration of the microsporidium on mortalities of S. gregaria (92–98%) 19 days postinfection. Adjusted mortality in L.m. migratorioides at 19 days post-exposure was 24, 43 and 80% at the corresponding treatment concentrations. The effect of infection on fecundity was tested on both L.m. migratorioides and S. gregaria. Spinach leaf discs were treated with different concentrations (0, 104, 105 and 106 spores mL?1) of J. locustae and presented to female insects for 24 h. Female L.m. migratorioides surviving infection as nymphs laid significantly fewer egg pods than untreated controls at all levels of exposure. The number of eggs per female was also significantly lower in treated lots than in the controls. Higher spore concentrations also adversely affected egg hatching rate. The effect of J. locustae infection on feeding was tested on S. gregaria. There was a significant decrease in food intake among S. gregaria nymphs treated only at the high concentration (106 spores mL?1). 相似文献
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First description of hatchlings and eggs of Octopus oliveri (Berry, 1914) (Cephalopoda: Octopodidae)
Chromatophore patterns can be used to identify paralarvae at the species level and are used here to distinguish Octopus oliveri (Berry, 1914) from other Hawaiian cephalopod paralarvae. Eggs, clutches, and hatchlings are described for the first time in O. oliveri. Preservation times are compared to illustrate variation in founder chromatophore patterns even among individuals of the same brood. 相似文献
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This contribution reviews the worldwide record of canid and canid-like (creodont and hyaenid) fossil footprints, the taxonomy of this type of footprints, and reports a new record of canid footprints from the late Pleistocene Pehuen Co site of southern Buenos Aires province, Argentina. On the basis of the comparison of proposed ichnogenera and features of modern canid and felid footprints, a set of ichnogeneric and ichnospecific taxobases are proposed. The ichnotaxonomic review includes Bestiopeda Vialov, 1965; Canipeda Panin and Avram, 1962; Felipeda Panin and Avram, 1962; Pehuencoichnum Aramayo and Manera de Bianco, 1987b; Creodontipus Santamaría et al. 1989–1990; Tetrastoibopus Sarjeant and Langston, 1994; and Quiritipes Sarjeant et al. 2002. A key to discriminate these ichnotaxa is also proposed and the diagnosis of Canipeda emended. The new findings of canid footprints from Pehuen Co are indistinguishable from Pehuencoichnum gracilis Aramayo and Manera de Bianco, 1987b, and this ichnospecies is synonymized under Canipeda gracilis (Vialov, 1965). An emended diagnosis for C. gracilis is proposed. The most likely producer of C. gracilis from Pehuen Co is a medium-sized fox similar to the extant representatives of Lycalopex. 相似文献
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Stella Coram 《Anthropological Forum》2009,19(2):195-216
Australian Indigenous affairs are underscored by a central tension between the rights of Indigenous peoples to self-determination, and assimilation policy premised on cultural homogeneity. This tension is most evident between the Northern Territory Government-commissioned Anderson and Wild (2007) report, entitled Ampe akelyernemane meke mekarle: Little children are sacred, which recommends the continuation of community-led programs in response to childhood sexual abuse in Indigenous communities, and the Commonwealth's Northern Territory National Emergency Response Act 2007 (NTNER), commonly known as ‘the intervention’, which Altman and Hinkson (2007) claim represents a ‘coercive’ attempt to dismantle Indigenous rights to manage their affairs. In her critique of cultural incompatibility (culturalism), McConaghy (2000) observes that radicalism, or cultural difference policy in oppositional histories of power and control, seeks to invert colonial power relations. Instead, argues McConaghy, radicalism (much like assimilation) reinstitutes colonial relations of dominance. I draw on culturalism to explore the tension between Indigenous self-determination (a form of inversion), represented within the Little children are sacred report, and intervention, as a model not for coercive assimilation but for cultural integration (Sutton 2001a; Pearson 2007). I propose that cultural inversion, as a justificatory model for addressing dysfunction within Indigenous communities, displaces the needs and rights of individuals for mainstream intervention. 相似文献
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Shuqian Zhang 《Molluscan research.》2015,35(1):17-23
The species of genus Antillophos Woodring, 1928 from the China seas are studied. Six species, Antillophos liui n. sp., Antillophos lucubratonis Fraussen & Poppe, 2005, Antillophos monsecourorum Fraussen & Poppe, 2005, Antillophos pyladeum (Kato, 1995), Antillophos roseatus (Hinds, 1844) and Antillophos sp., are described and illustrated.http://zoobank.org/urn:lsid:zoobank.org:pub:51481997-A841-4F37-8E15-B753DC99CB4D 相似文献
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This paper contains a taxonomic study of the Permian tetrapod ichnofauna from the Carapacha Basin. Tetrapod traces are analyzed in their environmental context and compared with similar faunas from Europe and North America. This ichnofauna is particularly relevant because of the scarcity of Permian tetrapod tracks from South America and also of Permian tetrapod fossils from Argentina. Ephemeral fluvial and shallow lacustrine deposits compose the sedimentary succession of the basin, which is represented by the Carapacha Formation. Most of the tracks have been collected from the upper member of the formation (Urre-Lauquen Member), mainly from freshwater ephemeral lake deposits as well as from playa-lake mudflats. The deposits of this member have been attributed to the early Late Permian on the basis of a Glossopteris fossil flora. Ichnotaxonomic designations of tetrapod traces are made on the basis of morphologic features that reflect the anatomy of the producer and special attention has been paid to extramorphologic deformations observed in the track assemblage. A total of four footprint ichnotaxa have been recognized, namely Batrachichnus salamandroides (Geinitz, 1861), Hyloidichnus bifurcatus Gilmore, 1927, cf. Amphisauropus isp. and cf. Varanopus isp. These track taxa are associated with two forms of vertebrate swimming traces (Characichnos isp. and type A swimming trace) and a possible fish trail. Invertebrate trace fossils include abundant arthropod locomotion traces and Scoyenia isp. The ichnofauna is composed of six tetrapod ichnocoenoses that are dominated by tiny amphibian tracks attributed to Temnospondyli (Batrachichnus and type A swimming trace) and Seymouriamorpha (Amphisauropus), and also contain the footprints of small reptiles, mostly Captorhinomorpha and possibly Pelycosauria (Hyloidichnus and Varanopus). Even if the ichnofauna of the Carapacha Basin is slightly younger than typical examples from the literature of the Early Permian “red bed ichnofacies” (Hunt et al., 1995b), a comparison is made. However, further detailed case studies are needed to formally define this “red bed ichnofacies” and its prospective subdivisions. 相似文献
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We investigated the morphology, morphogenesis and small subunit rRNA gene-based phylogeny of three marine urostylids, Uncinata gigantea Bullington, 1940, Holosticha heterofoissneri Hu & Song, 2001, and Holosticha cf. heterofoissneri. The dorsal morphogenesis of Uncinata gigantea shows de novo formation of two groups of anlagen near the marginal rows. Holosticha cf. heterofoissneri demonstrates fragmentation of the first dorsal kinety anlage as in Holosticha heterofoissneri. Our population of H. heterofoissneri corresponds well with previously described populations in terms of its general morphology and ciliary pattern. Uncinata gigantea can be recognized by its large and highly contractile body, yellowish to brownish cell colour, two types of cortical granules, and 20–30 transversely oriented and densely arranged cirri in the left marginal row, which often overlie the buccal vertex. Based on the new data, especially infraciliature, the genus Uncinata is here redefined. Both the morphology and phylogenetic analyses suggest that the genus Uncinata should be classified within the family Urostylidae. In addition, both morphological and morphogenetic data suggest that Holosticha bradburyae Gong et al., 2001 should be transferred to Uncinata as U. bradburyae (Gong et al., 2001) comb. nov., due to its possession of a characteristically prominent beak-like, leftwards curved projection and the developmental mode of the dorsal kineties. This assignment is supported by the phylogenetic analyses, which placed Uncinata gigantea in a clade with U. bradburyae (Gong et al., 2001) comb. nov., and revealed only 1.13% (19 bp) difference in their SSU-rDNA gene sequence. 相似文献