1,721,061 research outputs found

    Isolation of additional polymorphic tri- and tetranucleotide microsatellite loci for the giant Australian cuttlefish (Sepia apama)

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    The definitive version is available at www.blackwell-synergy.comWe isolated 10 polymorphic microsatellite loci for the giant Australian cuttlefish, Sepia apama, from a genomic library enriched for (AAC)n and (AAAG)n repetitive elements. In the nine loci that reliably amplified, the number of alleles ranged from four to 12 per locus with observed heterozygosity ranging from 0.343 to 0.926. These and a previously developed set of six loci will be useful for analysis of genetic structure of populations and determining input to a massive seasonal breeding aggregation in northern Spencer Gulf, Australia.Leanne Wheaton, Stephen C. Donnellan, Melita C. De Vries, Michael G. Gardner, Bronwyn M. Gillander

    Isolation of polymorphic tri- and tetranucleotide microsatellite loci for the highly endangered Baw Baw frog (Philoria frosti)

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    The definitive version is available at www.blackwell-synergy.comWe isolated 15 polymorphic microsatellite loci for the Baw Baw frog, Philoria frosti, from a genomic library enriched for (AAC)n and (AAAG)n repetitive elements. The number of alleles ranges from two to 14 per locus with the observed heterozygosity ranging from 0.04 to 0.96.Leanne Wheaton, Stephen C. Donnellan, Michael G. Gardner and Gregory J. Holli

    Phylogenetic disassembly of species boundaries in a widespread group of Australian skinks (Scincidae: Ctenotus)

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    Abstract not availableDaniel L. Rabosky, Mark N. Hutchinson, Stephen C. Donnellan, Amanda L. Talaba, Irby J. Lovett

    Development of microsatellite markers and analysis of their inheritance in the Australian reptile tick, Bothriocroton hydrosauri

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    The definitive version is available at www.blackwell-synergy.comDespite long-term study, the mechanism explaining the parapatric distribution of two Australian reptile tick species is not understood. We describe the development of primers amplifying 10 microsatellite Bothriocroton hydrosauri loci, for the study of population structure and dispersal patterns of this tick. The numbers of alleles per locus ranged from two to seven in ticks from the study site, and the observed heterozygosity between 0.28 and 0.69. Pedigree analysis indicates that one locus is inherited in a non-Mendelian manner in three families, which was not explained by null allele presence.Jaro Guzinski, Kathleen M. Saint, Michael G. Gardner, Stephen C. Donnellan, C. Michael Bul

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Dicyemid fauna composition and infection patterns in relation to cephalopod host biology and ecology

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    Published: August 6, 2014Ten Southern Hemisphere cephalopod species from six families collected from six localities in western, southern and eastern Australia were examined for dicyemid parasites. A total of 11 dicyemid species were recorded, with three cephalopod species uninfected, four infected by one dicyemid species and three infected by multiple dicyemid species. Dicyemid species prevalence ranged from 24-100%, with observed infection patterns explored due to host size, host life history properties, host geographical collection locality and inter-parasite species competition for attachment sites, space and nutrients. Left and right renal appendages were treated as separate entities and four different patterns of infection by asexual and sexual dicyemid stages were observed. The detection within a single host individual of asexual dicyemid stages in one renal appendage and sexual dicyemid stages in the other renal appendage supported the notion that developmental cues mediating stage transition are parasite-controlled, and also occurs independently and in isolation within each renal appendage. Our study exploring dicyemid parasite fauna composition in relation to cephalopod host biology and ecology therefore represents a thorough, broad-scale taxonomic analysis that allows for a greater understanding of dicyemid infection patterns.Sarah R. Catalano, Ian D. Whittington, Stephen C. Donnellan and Bronwyn M. Gillander

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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