Relevant bibliographies by topics / Platypus

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  2. Dissertations / Theses
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Academic literature on the topic 'Platypus'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 July 2024

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Journal articles on the topic "Platypus"

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Griffiths, Josh, Tom Kelly, and Andrew Weeks. "Net-avoidance behaviour in platypuses." Australian Mammalogy 35, no. 2 (2013): 245. http://dx.doi.org/10.1071/am12051.

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It has been suggested that platypuses (Ornithorhynchus anatinus) may avoid nets following capture, compromising abundance estimates using mark–recapture models. Here, we present the first direct evidence of net avoidance behaviour by the platypus. Using acoustic telemetry, we record a platypus bypassing several nets following capture. Understanding variation in capture probabilities will lead to better estimation of platypus abundance, which is currently lacking.
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Furlan, Elise, J. Griffiths, N. Gust, et al. "Is body size variation in the platypus (Ornithorhynchus anatinus) associated with environmental variables?" Australian Journal of Zoology 59, no. 4 (2011): 201. http://dx.doi.org/10.1071/zo11056.

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The body size of the platypus (Ornithorhynchus anatinus) is known to vary across both its latitudinal range and relatively short geographic distances. Here we consider how variation in platypus length and weight associates with environmental variables throughout the species’ range. Based on data from over 800 individuals, a Bergmann’s cline (increased body size in regions of lower temperature) was detected across the species latitudinal range. The opposite association, however, was present at smaller scales when comparing platypus body size and temperature within southern mainland Australia, or within an individual river basin. Temperature regimes alone clearly did not dictate body size in platypuses, although disentangling the effects of different climatic variables on body size variation was difficult because of correlations amongst variables. Nevertheless, within suitable platypus habitat in south-eastern Australia, areas of relatively lower rainfall and higher temperatures were typically associated with larger-bodied platypuses. The potential benefits to larger-bodied animals living under these conditions are explored, including consideration of variation in energy expenditure and food availability. Assuming these associations with environmental variables are biologically significant, a shift in platypus body size is anticipated in the future with predicted changes in climate.
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Connolly, Joanne H. "A review of mucormycosis in the platypus (Ornithorhynchus anatinus)." Australian Journal of Zoology 57, no. 4 (2009): 235. http://dx.doi.org/10.1071/zo09043.

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Many infectious agents and parasites have been reported from the platypus (Ornithorhynchus anatinus), but most do not cause serious disease. The fungus, Mucor amphibiorum, is the only disease agent known to cause significant morbidity and mortality in the free-living platypus in Tasmania. Infection has also been reported in free-ranging cane toads and green tree frogs from mainland Australia, but not confirmed in platypuses from the mainland. This paper reviews mucormycosis in the platypus and includes the epidemiology, clinical features, mycology, pathology as well as possible surveillance, treatment and/or control modalities. The emergence and geographical spread of mucormycosis as a disease entity in Tasmanian platypuses from 1982 till 2005 are discussed. The host, agent and environment factors of the traditional epidemiological paradigm are discussed as they contribute to the conditions that lead to the selection or emergence of Mucor amphibiorum as a pathogen in a population of platypuses.
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Connolly, Joanne H., Tom Claridge, Sarah M. Cordell, Sharon Nielsen, and Geoff J. Dutton. "Distribution and characteristics of the platypus (Ornithorhynchus anatinus) in the Murrumbidgee catchment." Australian Mammalogy 38, no. 1 (2016): 58. http://dx.doi.org/10.1071/am14039.

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Little is known of the current status of platypus (Ornithorhynchus anatinus) populations in the Murrumbidgee catchment and other west-flowing rivers in the Murray–Darling Basin. Platypus distribution in the Murrumbidgee catchment was determined from sightings, reports by government departments, the literature and a capture–release study. The platypus was found to be widespread in the catchment, including all subcatchment and elevation categories, but most reports were from the middle and upper subcatchments. Sixty-five captures of 55 individual platypuses were made during 61 trap-nights to 31 study sites in the Murrumbidgee catchment during 2009–10. Only three juveniles (all females) were captured and recapture rates were low, with only nine platypuses captured more than once. Adult males had body weights of 980–2180 g and body lengths of 42–60 cm (n = 32). Adult females weighed 795–1480 g and were 38–52 cm long (n = 20). Tail fat index was significantly affected by season and platypus age, while in comparison, season, platypus length and weight had a significant effect on tail volume index. This study established a baseline that provides a starting point from which the impacts of environmental disturbances or diseases occurring over time can be measured and investigated.
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Lin, Minjie, and R. C. Jones. "Spermiogenesis And the Cycle of The Seminiferous Epithelium in The Platypus, Ornithorhynchus Anatinus." Australian Mammalogy 20, no. 2 (1998): 306. http://dx.doi.org/10.1071/am98313.

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Department of Biological Sciences, University of Newcastle, New South Wales 2308. Ultrastructural studies of spermiogenesis in platypuses indicate that they display some unique features. The origin and morphology of the perforatorium are different than in sperm from birds and therian mammals, and development of the fibrous sheath of the principal piece starts much later in the platypus. However, some features of spermiogenesis in the platypus are similar to birds, but different from therian mammals. For example, the dense granules in the developing acrosome of therian mammals are absent in platypus spermatids. Other features of spermiogenesis in the platypus are similar to processes described in therian mammals, but not birds. For example, the acrosome of platypus sperm is not confined to the rostral surface of the nucleus as in avian sperm, but extends laterally over the nucleus as in sperm from therian mammals. Further, during spermiation the tubulobulbar complexes were also observed in the platypus. Sixteen steps of spermatid development were identified and used to classify the cycle of the seminiferous epithelium into 12 stages. The area of the wall of a seminiferous tubule, which is occupied by a stage of the cycle of the seminiferous epithelium in the platypus (about 6-8 stages of the cycle per tubular cross-section), is between that of therian mammals (1-4 stages) and birds (up to 12 stages). The cycle ofseminiferous epithelium will provide a basis to determine the rate of sperm production in the platypus.
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Gust, Nick, and Josh Griffiths. "Platypus (Ornithorhynchus anatinus) body size, condition and population structure in Tasmanian river catchments: variability and potential mucormycosis impacts." Wildlife Research 38, no. 4 (2011): 271. http://dx.doi.org/10.1071/wr10162.

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Context Despite widespread interest in platypus (Ornithorhynchus anatinus) conservation, it is unclear how their fundamental morphometric and demographic characteristics differ over a range of scales. This hampers impact assessments and understanding of platypus ecology. Although the ulcerative fungal disease mucormycosis has infected platypuses in Tasmania for three decades, its population level impacts and conservation significance remain unknown. Aims This study examined morphometric and demographic patterns in Tasmanian platypuses to provide a basis for investigating impacts of mucormycosis or other anthropogenic disturbances. It also sought to identify important spatial scales of natural variability and the magnitude of seasonal variation in platypus body size, condition and population structure. The hypothesis of higher mucormycosis prevalence and mortality in adult males was also investigated. Methods Extensive live-trapping surveys were conducted from January 2008 to July 2009 in 75 streams and 18 river catchments across Tasmania including King Island. The sex, age, body size, tail volume index, health and moult condition of 195 individuals were assessed, and population age and sex structures characterised. Sampling focussed on assessing variability within and between river catchments and compared populations in river catchments with contrasting disease status. Key results Differences in platypus morphometrics within and between catchments and seasonal moulting patterns were detected. Adult males had higher fat stores than adult females, especially during winter. This study also provided the first evidence of population level consequences of disease in platypuses. The demographic group most commonly affected by mucormycosis was confirmed to be adult males. Differences in male age structure among catchments of varying disease status were consistent with the hypothesis of higher adult male mortality rates and turnover in currently affected catchments. Conclusions More than 25 years after mucormycosis was first detected in Tasmanian platypuses, the disease continues to play a low-level, ongoing role in affected populations. Implications The present study provides the first systematic multi-scale spatial investigation of platypus mucormycosis, which contributes to unravelling the epidemiology of the disease and detecting its impacts. By identifying the magnitude and important scales of morphometric and demographic differences in Tasmanian platypuses the study also assists researchers choose comparable demographic groups and spatial scales for meaningful comparisons in future impact studies.
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Turnbull, R. W. "Distribution of the Platypus (Ornithorhynchus anatinus) in the Bombala River Catchment, South-Eastern New South Wales." Australian Mammalogy 20, no. 2 (1998): 251. http://dx.doi.org/10.1071/am98251.

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Distribution of the platypus (Ornithorhynchus anatinus) in the Bombala River catchment in south-eastern New South Wales was surveyed using questionnaires. Platypuses were reported from all streams in the catchment. The majority of positive sightings were from downstream areas whereas very few positive sightings were reported from headwater areas. The difference between frequencies of headwater and downstream reports of sightings was significant. The platypus was considered common throughout the catchment.
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Macgregor, J. W., C. S. Holyoake, S. Munks, et al. "Novel use of in-stream microchip readers to monitor wild platypuses." Pacific Conservation Biology 20, no. 4 (2014): 376. http://dx.doi.org/10.1071/pc140376.

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A variety of techniques have been used to monitor platypus populations to assess the impacts of the threats they face, but each technique has limitations. In this study we investigated the novel use of in-stream microchip readers, to remotely monitor the movements of microchipped wild platypuses. Over 13 months, we recorded movements of 18 microchipped individuals past nine fixed locations in the Inglis Catchment in northwest Tasmania, using three units of which all were capable of detecting Trovan® unique microchips and two were additionally capable of detecting ISO microchips. Each site was monitored one or two times, for durations of 8–39 days. We undertook direction of movement investigations during two monitoring periods, by placing the antennas from two systems in the same creek within 3 m of each other. In a total of 264 days of monitoring, 528 platypus observations were made from 18 individual platypuses, consisting of 13 of 18 (72%) platypuses captured at the monitoring sites within 16 months prior to monitoring, two platypuses captured at other sites in the same time period, and three of seven (43%) individuals microchipped 3–5 years previously. This number of platypus observations, in combination with the stable number of platypuses observed per day, the range of movement behaviours recorded and the results of the direction of movement investigations, indicates that at appropriate sites, in-stream microchip readers are an effective method of monitoring the movements and survivorship of microchipped wild platypuses.
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Macgregor, J. W., C. S. Holyoake, S. Munks, et al. "Corrigendum to: Novel use of in-stream microchip readers to monitor wild platypuses." Pacific Conservation Biology 21, no. 1 (2015): 101. http://dx.doi.org/10.1071/pc140376_co.

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A variety of techniques have been used to monitor platypus populations to assess the impacts of the threats they face, but each technique has limitations. In this study we investigated the novel use of in-stream microchip readers, to remotely monitor the movements of microchipped wild platypuses. Over 13 months, we recorded movements of 18 microchipped individuals past nine fixed locations in the Inglis Catchment in northwest Tasmania, using three units of which all were capable of detecting Trovan® unique microchips and two were additionally capable of detecting ISO microchips. Each site was monitored one or two times, for durations of 8–39 days. We undertook direction of movement investigations during two monitoring periods, by placing the antennas from two systems in the same creek within 3 m of each other. In a total of 264 days of monitoring, 528 platypus observations were made from 18 individual platypuses, consisting of 13 of 18 (72%) platypuses captured at the monitoring sites within 16 months prior to monitoring, two platypuses captured at other sites in the same time period, and three of seven (43%) individuals microchipped 3–5 years previously. This number of platypus observations, in combination with the stable number of platypuses observed per day, the range of movement behaviours recorded and the results of the direction of movement investigations, indicates that at appropriate sites, in-stream microchip readers are an effective method of monitoring the movements and survivorship of microchipped wild platypuses.
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Gemmell, NJ, TR Grant, PS Western, et al. "Determining Platypus Relationships." Australian Journal of Zoology 43, no. 3 (1995): 283. http://dx.doi.org/10.1071/zo9950283.

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In the summer of 1990-91 the first captive breeding of platypus (Omithorhynchus anatinus) in 47 years, and only the second ever, occurred in a small resident population at Warrawong Sanctuary, South Australia. DNA fingerprinting and analyses employing the maternally inherited mitochondrial genome have been used to determine family relationships within this population Using hypervariable DNA sequences cloned from other species to probe blots of DNA from the Warrawong platypuses, individual-specific banding patterns have been observed that allow the identification of family relationships within the population. A novel method for detecting maternal relationships within platypus populations, based on polymerase chain reaction analyses of the highly polymorphic mitochondrial control region, is also presented.
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Dissertations / Theses on the topic "Platypus"

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Macgregor, James. "Conservation of the platypus (Ornithorhynchus anatinus): Development of a framework to assess the health of wild platypus populations." Thesis, Macgregor, James (2015) Conservation of the platypus (Ornithorhynchus anatinus): Development of a framework to assess the health of wild platypus populations. PhD thesis, Murdoch University, 2015. https://researchrepository.murdoch.edu.au/id/eprint/28417/.

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A wide range of factors, including individual animal health, genetic diversity and demographics, are associated with wildlife population declines and investigation of these factors may be more sensitive in detecting early impacts on wildlife populations, than estimates of population size alone. Defining wildlife population health as the ability of a wildlife population to remain viable in the long term, this project developed and implemented a holistic health assessment framework for platypuses to gather baseline data, to investigate environmental, temporal and individual patterns within this data, and to provide insights into potential threatening processes. Platypus distribution and population density in two river catchments in northwest Tasmania were investigated in a live capture/release field study during which 154 individuals were captured. The effect on capture numbers of broad habitat characteristics was investigated. A survey of public sightings provided additional information on platypus distribution and population density. The novel use of in-stream microchip readers to monitor platypus movements/survivorship was developed. Data was collected on the timing and frequency of platypus movements, as well as continued use of monitoring sites by individuals captured in this study and in a study three to six years earlier. The timing of the breeding season in Tasmania was investigated using hormonal, ultrasonographic and remote monitoring observations. Genetic diversity and geographical distribution of alleles at the Major Histocompatibility Complex Class II DZB locus was also investigated. The reliability of existing and novel body condition indices was studied. The prevalence of exposure to a range of parasitic, fungal and bacterial agents was determined. Haematology and biochemistry reference intervals were produced. Little evidence was found that the two study populations were in poor health. Baseline population health data, that for many species has been absent when population declines have occurred, was collected for platypuses; and the project’s general approach will serve as a template for similar research in other species.
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Endo, Rikiya. "Symbiotic fungi of the ambrosia beetle Platypus quercivorus." Kyoto University, 2011. http://hdl.handle.net/2433/142336.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第16138号<br>農博第1874号<br>新制||農||991(附属図書館)<br>学位論文||H23||N4608(農学部図書室)<br>28717<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授 二井 一禎, 教授 北山 兼弘, 教授 藤崎 憲治<br>学位規則第4条第1項該当
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Whittington, Camilla Marie. "Evolution of venom : gene discovery in the platypus." Thesis, The University of Sydney, 2010. https://hdl.handle.net/2123/28904.

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The research contained within this dissertation aims to shed light onto the basic biology of one of Australia’s unique native wildlife species, the platypus. In particular, it aims to broaden our knowledge of mammalian venom, by bioinformatic identification of genes encoding known platypus venom components, phylogenetic analyses of platypus and other animal venom toxins, and investigation of tissue expression patterns of platypus venom and related non venom genes. Finally, this research culminates in the use of a platypus venom transcriptome to identify previously unknown platypus venom toxins using a novel bioinformatic approach. This, in tandem with studies in other fields and of other venomous mammals, will allow the identification of the full range of mammalian venom components. Functional studies and pharmacological evaluation of the platypus toxins identified here will lay the foundations for the future development of novel biomedical substances. A large range of useful molecules has already been identified in other venoms, and many of these are currently in use in human medicine. It is therefore hoped that this basic research to identify the constituents of platypus venom will eventually yield novel drugs as well as a greater understanding of the mechanisms of venom gene evolution.
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Connolly, Joanne H. "Immunopathological characterisation of infectious diseases of the koala and the platypus." Thesis, The University of Sydney, 2000. http://hdl.handle.net/2123/8428.

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This study characterised the pathological and immunopathological features of selected infectious diseases in the koala and the platypus. Originally, lymphosarcoma, cryptococcosis and chlamydiosis in the koala were chosen. Lymphosarcoma was included because of the putative retroviral involvement. Another infectious disease of Australian wildlife, mucormycosis of the platypus, was also included in the study. One hundred and ten koalas were necropsied throughout the study to determine the main cause of death, other pathological conditions present and to provide a source of case material. Fifty-six koala lymphoid neoplasia cases were obtained and the clinical features and clinical pathology were described. Cases were classified according to the tissues affected and the morphology of the neoplastic cells. The technique of immunohistochemistry was successfully applied to immunophenotype koala lymphoid neoplasms. Approximately half the cases were of the T cell immunophenotype, one quarter of B cell immunophenotype and one quarter did not stain. Multiple organ involvement and/or lymphoid leukaemia were common, probably reflecting presentation of koalas at advanced stages of disease. In order to improve understanding of the dynamics of progression from asymptomatic carriage of Cryptococcus neoformans to cryptococcosis, a preliminary study was undertaken to determine the prevalence, extent, biotype and seasonality of nasal and skin colonisation in the koala by Cryptococcus neoformans. Over a 22-month period, sequential nasal and skin swabs were obtained from 52 healthy captive koalas from the Sydney region. Prevalence of nasal colonisation varied seasonally from 12 to 38%. Cryptococcus neoformans var. gattii was cultured from 37, var. neoformans from 22 and both varieties from 5 nasal swabs. One case of cryptococcosis in a captive koala was diagnosed, and the treatment and response to therapy was described. The applicability of a streptavidin biotin-horseradish peroxidase immunohistological staining method to determine the variety and serotype of Cryptococcus neoformans in histological sections of infected koala tissues was assessed. A preliminary study was undertaken to assess the proliferative responses of koala lymphocytes to various mitogens and to chlamydial and cryptococcal antigen in infected and non-infected koalas. The proliferative response of cultured koala lymphocytes varied with the individual animal, the mitogen or antigen used and its concentration, but were invariably greater with separated peripheral blood mononuclear cells than with whole blood. Prior to investigating the immunopathogenesis of mucormycosis in the platypus, the use of various immunomarkers was validated using normal platypus lymphoid tissue. The gross structure and histology of lymphoid tissues obtained from 15 platypuses was described; including spleen, thymus, lymphoid nodules, gut-associated lymphoid tissue and bronchus-associated lymphoid tissue. With the exception of lymphoid nodules, the lymphoid tissue of the platypus was comparable in histological structure to that of therian mammals. Cross-reactive and specific antiplatypus antibodies were successfully applied to histological sections of platypus lymphoid tissue. The immunohistological appearance of the lymphoid tissues in the platypus was similar to that of eutherian and metatherian mammals, except for the detection of fewer B lymphocytes. In order to improve understanding of the pathogenesis of Mucor amphibiorum infection in the platypus, the gross, histological and immunohistological features of cutaneous lesions from 14 platypuses were described. For comparative purposes, normal platypus skin was also examined histologically and immunohistologically. Cases of mucormycosis were confirmed by cytology, histology, mycology and/or ELISA. Skin lesions varied in size, and ranged from raised red nodules or plaques, to ulcerated lesions. Lesions could be either granulomatous or pyogranulomatous, and were commonly diffuse. T cells were the predominant infiltrating lymphoid cell in the lesions and few B cells were observed in all cases. Presumptive plasma cells were observed in about half the cases.
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Akula, Srinivas. "Analysis of the isotype specificity of three platypus immunoglobulin Fc receptors." Thesis, Uppsala universitet, Institutionen för cell- och molekylärbiologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-188288.

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The host’s defense against diseases called immunity acts either via innate or adaptive defense mechanisms. Immunoglobulins (Ig’s) are important players in adaptive immunity. They have evolved both structurally and functionally during vertebrate evolution. The Fc region of Igs can interact with specific receptors on the surface of various immune cells; crosslinking of these Fc receptors can trigger a wide array of immune reactions. To trigger such reactions, higher mammals have five different classes of Igs (IgM, IgG, IgA, IgE and IgD) while amphibians, reptiles and birds have four (IgM, IgD, IgA and IgY).  Our recent studies have revealed that the early mammals (Platypus) have eight Ig isotypes (IgM, IgD IgO, IgG1, IgG2, IgA1, IgA2 and IgE) and at least four Fc receptors: FcRA, FcRB, FcRC and FcRD. In this study we investigated the specificity of three of these platypus Fc receptors to get a better picture of their isotype specificity.
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Inácio, Maria de Lurdes Nunes Silva. "Fungi associated with Platypus cylindrus (Coleoptera: Platypodidae) and their relation to cork oak decline." Doctoral thesis, ISA/UTL, 2012. http://hdl.handle.net/10400.5/5194.

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Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia<br>The ambrosia beetle Platypus cylindrus establishes symbiotic relationships with fungi. P. cylindrus may act as a vector for the dispersal of phytopathogenic fungi in the Mediterranean cork oak stands. The aim of this study was to identify the fungi associated with P. cylindrus in Portugal and to understand the role and potential impacts on cork oak stands of both insect and fungi. A complex of fungi was found in association with the insect, namely species of cosmopolitan genera whose exact role in the interaction still remains under discussion. Biscogniauxia mediterranea, the causal agent of charcoal canker disease was also found associated with P. cylindrus which contributes to disease spread in cork oak stands. A total of fourteen representative isolates belonging to Ophiostomatales where selected. Fungal strains were morphologically and molecularly characterized. Three rDNA contiguous regions SSU, ITS and LSU, were profiled for each strain and contrasted with pre-existent Ophiostomatales species worldwide. In addition, pathogenicity tests were conducted. A new Ophiostoma species, with Hyalorhinocladiella anamorph, and a Raffaelea species closely related to R. canadensis were noticed for the first time and in association with the ambrosia beetle. Molecular evidence suggests that a different phylogenetic lineage of Ophiostomatales exists in Portugal. R. montetyi was found to be the primary ambrosia fungus of P. cylindrus. The pathogenicity of R. montetyi towards cork oak seedlings was confirmed and its role as a cork oak declining agent determined
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Pham, Duy Long. "Ecological studies on dispersal flight and host selection of the ambrosia beetle Platypus quercivorus (Murayama)." Doctoral thesis, Kyoto University, 2020. http://hdl.handle.net/2433/259055.

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京都大学<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第22787号<br>農博第2430号<br>新制||農||1081(附属図書館)<br>学位論文||R2||N5307(農学部図書室)<br>京都大学大学院農学研究科森林科学専攻<br>(主査)教授 井鷺 裕司, 教授 森 直樹, 准教授 大澤 直哉<br>学位規則第4条第1項該当<br>Doctor of Agricultural Science<br>Kyoto University<br>DFAM
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Henriques, Joana Margarida Cordeiro. "Fungos associados a Platypus cylindrus Fab. (Coleoptera: platypodidae) e sua relação com o declínio do sobreiro em Portugal." Master's thesis, Universidade de Évora, 2007. http://hdl.handle.net/10174/16413.

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O inseto Platypus cylindrus Fab. estabelece simbioses com fungos que inocula em galerias que constrói em sobreiro. A partir do inseto e das galerias isolaram-se fungos dos géneros Acremonium, Aspergillus, Beauveria, Botrjytis, Chaetomium, Fusarium, Geotrichum, Gliocadíum, Nodulisporium, Paecilomyces, Penicillium, Raƒƒaelea, Scytalidium, Trichoderma, ordem Mucorales e o actinomiceta Streptomyces, alguns identificados pela primeira vez nesta interação. O género Raƒƒaelea compreende fungos ambrósia, incluindo uma espécie patogénica para quercíneas. Deste género identificaram-se R. ambrosiae, R. montetyi e R. canadensis, esta última pela primeira vez associada ao inseto e referida em Portugal. Verificou-se ainda o transporte de Nodulisporium sp., responsável pelo “carvão” do entrecasco do sobreiro. Demonstrou-se o envolvimento dos fungos na alimentação dos incestos, degradação de madeira, gestão de colónias nas galerias e enfraquecimento do hospedeiro. O conhecimento das estratégias de colonização do sobreiro é muito importante para o desenvolvimento de métodos de controlo para esta praga. /ABSTRACT - The incect Platypus cylindrus Fab. Establishes symbioses with fungi that inoculates in galleries excavated in cork oak. Fungal genera Acremonium, Aspergillus, Beauveria, Botrytis, Chaetomium, Fusarium, Geotrichum, Gliocadium, Nodulisporium, Paecilomyces, Penicillium, Raƒƒaelea, Scytalidium, Trichoderma, order Mucorales and the actinomicete genus Szreptomyces, were isolated from insect and galleries. Some of these were found for the first time in this interaction_ Raƒƒelea spp. includes ambrosia fungi and a pathogenic species to a Quercus sp... R. ambrosiae, R. montetyi and R. Canadensis were identified, the latter reported for the first time associated with the insect and in Portugal. The transport of Nodulisporium sp., the cause of cork oak charcoal disease, was confirmed. Fungal involvement in insect feeding, Wood degradation, colony management in the galleries and host weakness processes was also demonstrated. The knowledge of insect settling strategies on cork oak is very important for the development of control measures for this pest.
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Sousa, Edmundo de. "Contribution à l'étude de la biologie de populations de Platypus cylindrus (coleoptera : platypodidae) dans des peuplements de chênes-lièges au portugal." Lyon 1, 1996. http://www.theses.fr/1996LYO10092.

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Les principaux traits de la bio-ecologie de platypus cylindrus f. (coleoptera: platypodidae) sont etudies sur le chene-liege, dans le but d'interpreter l'actuelle explosion de ses populations au portugal. Cet insecte xylomycetophage presente des strategies de survie variees qui associent une longue phase de developpement pre-imaginal dans les galeries, et des symbioses avec 17 champignons, en particulier avec un complexe de 6 especes ambrosia utilisees pour la nourriture des larves. Les emergences peuvent s'etalier sur deux annees et les profils de sortie varient selon les hotes. A l'echelle de l'arbre, la densite des attaques sur le tronc decroit en general de la base vers le haut du tronc. P. Cylindrus a tendance a choisir son hote en fonction de l'etat sanitaire de ce dernier, de sa morphologie, de l'annee et l'intensite de demasclage. Une equation permet de predire la probabilite qu'un chene-liege soit infeste par l'insecte. L'accroissement des populations de p. Cylindrus serait surtout lie au declin des peuplements de chenes-lieges. Les resultats obtenus permettent de proposer plusieurs mesures pour le controle des populations de p. Cylindrus dans les peuplements de chene-liege au portugal
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Tarno, Hagus. "Studies on the Biology of the Ambrosia Beetle, Platypus quercivorus (Murayama) in the Gallery, related to Frass Production and Male Behavior." Kyoto University, 2011. http://hdl.handle.net/2433/142327.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第16129号<br>農博第1865号<br>新制||農||989(附属図書館)<br>学位論文||H23||N4599(農学部図書室)<br>28708<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授 二井 一禎, 教授 北山 兼弘, 教授 藤崎 憲治<br>学位規則第4条第1項該当
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Books on the topic "Platypus"

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Arnold, Caroline. A platypus' world. Picture Window Books, 2008.

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Short, Joan. Platypus. Mondo, 1997.

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Antill, Sara. Platypus. Windmill Books, 2011.

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Platypus. Bellwether Media, 2014.

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Platypus. Viking, 2001.

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(Firm), Grolier Educational, ed. Platypus. Grolier Educational, 2001.

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Antill, Sara. Platypus. Windmill Books, 2010.

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Kras, Sara Louise. Platypus. Capstone Press, 2009.

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Caper, William. Platypus. Bearport Publishing Company, Inc., 2008.

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Whiting, Sue. Platypus. Candlewick Press, 2016.

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Book chapters on the topic "Platypus"

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Carroll, Michael. "Platypus Panoramas." In Plato’s Labyrinth. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-91709-8_28.

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Holz, Peter. "Monotremes (Echidnas and Platypus)." In Zoo Animal and Wildlife Immobilization and Anesthesia. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118792919.ch31.

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Whittington, Camilla M., and Katherine Belov. "The Platypus: A Venomous Mammal." In Venom Genomics and Proteomics. Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6416-3_3.

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Whittington, Camilla M., and Katherine Belov. "The Platypus: A Venomous Mammal." In Toxinology. Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-6649-5_3-2.

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Ghormley, Roger E., and David L. Sallach. "Platypus: Inheritance and scientific discovery." In Statistical and Scientific Database Management. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/3-540-52342-1_31.

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Reynolds, Benjamin D., Cameron J. Whittaker, Kelly A. Caruso, and Jeffrey Smith. "Ophthalmology of Monotremes: Platypus and Echidnas." In Wild and Exotic Animal Ophthalmology. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81273-7_2.

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Tam, Margaret. "Reconciling a Platypus Nation: Can Churches Help?" In Indigenous Australia and the Unfinished Business of Theology. Palgrave Macmillan US, 2014. http://dx.doi.org/10.1057/9781137426673_6.

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Gressmann, Jean, Tomi Janhunen, Robert E. Mercer, Torsten Schaub, Sven Thiele, and Richard Tichy. "Platypus: A Platform for Distributed Answer Set Solving." In Logic Programming and Nonmonotonic Reasoning. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11546207_18.

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Grant, Tom. "Environmental impact assessment: monitoring from a platypus perspective." In Science Under Siege. Royal Zoological Society of New South Wales, 2012. http://dx.doi.org/10.7882/fs.2012.045.

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Pellissier Tanon, Thomas, Marcos Dias de Assunção, Eddy Caron, and Fabian M. Suchanek. "Demoing Platypus – A Multilingual Question Answering Platform for Wikidata." In Lecture Notes in Computer Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-98192-5_21.

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Conference papers on the topic "Platypus"

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Grosse-Puppendahl, Tobias, Xavier Dellangnol, Christian Hatzfeld, et al. "Platypus." In MobiSys'16: The 14th Annual International Conference on Mobile Systems, Applications, and Services. ACM, 2016. http://dx.doi.org/10.1145/2906388.2906402.

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Wei, Ruey-Sing, and Alberto Sangiovanni-Vincentelli. "PLATYPUS." In the 22nd ACM/IEEE conference. ACM Press, 1985. http://dx.doi.org/10.1145/317825.317856.

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Wüst, Karl, Kari Kostiainen, Noah Delius, and Srdjan Capkun. "Platypus." In CCS '22: 2022 ACM SIGSAC Conference on Computer and Communications Security. ACM, 2022. http://dx.doi.org/10.1145/3548606.3560617.

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De la Rosa Gutierrez, Jose Pablo, and Anders Stengaard Sørensen. "PLATYPUS." In HRI '23: ACM/IEEE International Conference on Human-Robot Interaction. ACM, 2023. http://dx.doi.org/10.1145/3568294.3580102.

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Morrison, Ann, Hannah Larsen, Caroline Fieldus, Alexander Kist, and Ananda Maiti. "Platypus Surfing." In ACI'2020: Seventh International Conference on Animal-Computer Interaction. ACM, 2020. http://dx.doi.org/10.1145/3446002.3446052.

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Ranchal-Pedrosa, Alejandro, and Vincent Gramoli. "Platypus: Offchain Protocol Without Synchrony." In 2019 IEEE 18th International Symposium on Network Computing and Applications (NCA). IEEE, 2019. http://dx.doi.org/10.1109/nca.2019.8935037.

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Ruey-Sing Wei and A. Sangiovanni-Vincentelli. "PLATYPUS: A PLA Test Pattern Generation Tool." In 22nd ACM/IEEE Design Automation Conference. IEEE, 1985. http://dx.doi.org/10.1109/dac.1985.1585935.

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Leditzky, Felix, Debbie Leung, Vikesh Siddhu, Graeme Smith, and John A. Smolin. "The platypus of the quantum channel zoo." In 2022 IEEE International Symposium on Information Theory (ISIT). IEEE, 2022. http://dx.doi.org/10.1109/isit50566.2022.9834678.

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Lipp, Moritz, Andreas Kogler, David Oswald, et al. "PLATYPUS: Software-based Power Side-Channel Attacks on x86." In 2021 IEEE Symposium on Security and Privacy (SP). IEEE, 2021. http://dx.doi.org/10.1109/sp40001.2021.00063.

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Hawke, Tahneal, Richard Kingsford, and Gilad Bino. "Using historical data to highlight population declines in the iconic Australian platypus." In 5th European Congress of Conservation Biology. Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/107447.

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