41 research outputs found

    Nomina dubia and faunistic issues with New Zealand spiders(Araneae)

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    Attempts to clarify the identity of obscure New Zealand spider taxa have lead to the conclusion that six species are best treated as nomina dubia [Philodromus rubrofrontus Urquhart 1891 (Philodromidae); Dictyna urquhartii Roewer 1951, (Dictynidae); Linyphia albiapiata Urquhart 1891, Linyphia cruenta Urquhart 1891, Linyphia multicolor Urquhart 1891, Linyphia pellos Urquhart 1891 (Linyphiidae)]. Four species currently listed in Araneus Clerck 1757 (Araneidae) are re-affirmed as synonyms [Araneus lineaacutus (Urquhart 1887) = Zealaranea crassa (Walckenaer 1842), Araneus powelli (Urquhart 1894) = Novaranea laevigata (Urquhart 1891), Araneus sublutius (Urquhart 1892b) = Zealaranea trinotata (Urquhart 1890), Araneus ventricosellus (Roewer 1942) = Eriophora heroine (L. Koch 1871)]. An old record of Araneus brisbanae (L. Koch 1867b) (Araneidae) from New Zealand is a misidentification of Eriophora decorosa Urquhart 1894. The family Philodromidae, the genera Dictyna Sundevall 1833 (Dictynidae) and Linyphia Latreille 1804 (Linyphiidae), as well as Tharpyna munda L. Koch 1875 (Thomisidae) and Araneus brisbanae (Araneidae) are absent from New Zealand

    The taxonomy and systematics of New Zealand lycosidae (wolf spiders)

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    The 27 species of Lycosidae found in New Zealand were revised. One species in the genus Allotrochosina Roewer, 1960; twenty species in the genus Anoteropsis L. Koch, 1878, of which 11 were new species (alpina, hlesti, cantuaria,forsteri, halli, insularis, lacustris, litoralis, montana, okalainae, and westlandica); three new species in the genus Artoria Thorell, 1877 (hospita, segrega, and separata); one species in the genus Geolycosa Montgomery, 1904; one species in the new genus Notocosa; one species in the genus Venatrix Roewer, 1960. All genera and species were described, with information on synonymy, type data, material examined, geographical distribution and sub familial status. A key to adults was constructed and habitus images of adults, illustrations of important structural features and distribution maps have been provided. A phylogeny for the genus Anoteropsis was inferred using parsimony analysis of morphological characters and contained significant phylogenetic structure. The phylogeny of Anoteropsis was further investigated using molecular data to test for congruence with the morphological data and the monophyly of widespread species. Data sets from the mitochondrial gene regions NADH dehydrogenase subunit I (ND1) and cytochrome c oxidase I (COI) of the 20 species in the New Zealand genus Anoteropsis were generated. Two species of Artoria were also sequenced and used as an outgroup. Species with a large distribution within New Zealand were represented by two or more specimens to test for monophyly or cryptic species. Sequence data were phylogenetically analysed using parsimony and maximum likelihood analyses. Sequence data was combined with a previously generated morphological data set and phylogenetic ally analysed using parsimony. The ND1 region sequenced included part of tRNA Leu(CUN), which appears to have an unstable amino-acyl arm and no TψC arm in lycosids. Analyses supported the existence of five main species groups within Anoteropsis and the monophyly of the species. Maximum likelihood analyses appears to provide better resolution of the deeper phylogenetic structure within Anoteropsis. Phylogenies generated from the COI data set show inconsistencies with the ND1 and morphological trees and caution is advised when using COI to estimate spider phylogenies. A radiation of Anoteropsis species within the last five million years is inferred from the ND1 likelihood phylogram, habitat and geological data. The relationship of New Zealand wolf spiders to Australian, Asian and Holarctic genera was investigated to ensure the correct generic placement of New Zealand species. A data set from the mitochondrial12S rRNA gene subunit of 11 Australasian lycosid species (six New Zealand species and five Australian species), three North American lycosid species, one European lycosid species and one New Zealand pisaurid (outgroup) were generated. They were combined with the published sequences of 12 European lycosids, two Asian lycosids and one Asian pisaurid and were phylogenetic ally analysed using parsimony and maximum likelihood analyses. Analysis revealed that Australasian species form clades distinct from Palearctic and Holarctic species providing further evidence against the placement of Australasian species in Northern Hemisphere genera. There is evidence that New Zealand wolf spiders are related to a subset of Australian genera whereas the other Australian lycosid genera are related to Asian/Holarctic faunas. 12S gene sequences were useful when examining relationships between closely related genera, but were not as informative for deeper generic relationships. Analyses supported the existence of five main species groups within Anoteropsis and the monophyly of the species. Maximum likelihood analyses appears to provide better resolution of the deeper phylogenetic structure within Anoteropsis. Phylogenies generated from the COI data set show inconsistencies with the ND1 and morphological trees and caution is advised when using COI to estimate spider phylogenies. A radiation of Anoteropsis species within the last five million years is inferred from the ND1 likelihood phylogram, habitat and geological data. The relationship of New Zealand wolf spiders to Australian, Asian and Holarctic genera was investigated to ensure the correct generic placement of New Zealand species. A data set from the mitochondrial12S rRNA gene subunit of 11 Australasian lycosid species (six New Zealand species and five Australian species), three North American lycosid species, one European lycosid species and one New Zealand pisaurid (outgroup) were generated. They were combined with the published sequences of 12 European lycosids, two Asian lycosids and one Asian pisaurid and were phylogenetic ally analysed using parsimony and maximum likelihood analyses. Analysis revealed that Australasian species form clades distinct from Palearctic and Holarctic species providing further evidence against the placement of Australasian species in Northern Hemisphere genera. There is evidence that New Zealand wolf spiders are related to a subset of Australian genera whereas the other Australian lycosid genera are related to Asian/Holarctic faunas

    Developing a future protocol for measuring spider biodiversity in pastures in New Zealand

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    Arthropods are often ignored or under-sampled in biodiversity and conservation assessments because of their large diversity, small size and lack of taxonomic guides. Rapid biodiversity assessment programmes have been established to assess these groups accurately. A COBRA (Conservation Oriented Biodiversity Rapid Assessment) protocol consists of an intense sampling of a habitat using the optimal combination of sampling methods. We set a basis for future protocols of measuring spider biodiversity in exotic pastures in New Zealand. Overall, 28 spider species were collected. There was variation in species discovery for each collection method, i.e. pitfall traps (86.6% of total species found), ground hand collection (95.4%), suction sampling (85.7%), and sweeping (25%). The various collection methods were complementary in species that were found. Of the four sampling methods used pitfall traps and ground hand collection were far more efficient at collecting spider species in pastures per sample. These findings are relevant for the future development of these protocols and ultimately, these tools will be used for assessing and monitoring biodiversity on farms and the impacts of farming methods.info:eu-repo/semantics/publishedVersio

    Species conservation profiles of a random sample of world spiders I : Agelenidae to Filistatidae

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    Background The IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species. In such cases, a random sample of species might be selected for assessment and the results derived from it extrapolated for the entire group - the Sampled Red List Index (SRLI). With the current contribution and the three following papers, we intend to create the first point in time of a future spider SRLI encompassing 200 species distributed across the world. New information A sample of 200 species of spiders were randomly selected from the World Spider Catalogue, an updated global database containing all recognised species names for the group. The 200 selected species where divided taxonomically at the family level and the familes were ordered alphabetically. In this publication, we present the conservation profiles of 46 species belonging to the famillies alphabetically arranged between Agelenidae and Filistatidae, which encompassed Agelenidae, Amaurobiidae, Anyphaenidae, Araneidae, Archaeidae, Barychelidae, Clubionidae, Corinnidae, Ctenidae, Ctenizidae, Cyatholipidae, Dictynidae, Dysderidae, Eresidae and Filistatidae.Peer reviewe

    Species conservation profiles of a random sample of world spiders III : Oecobiidae to Salticidae

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    Background The IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species. In such cases, a random sample of species might be selected for assessment and the results derived from it extrapolated for the entire group-the Sampled Red List Index (SRLI). The current contribution is the third in four papers that will constitute the baseline of a future spider SRLI encompassing 200 species distributed across the world. New information A sample of 200 species of spiders were randomly selected from the World Spider Catalogue, an updated global database containing all recognized species names for the group. The 200 selected species where divided taxonomically at the family level, and the familes were ordered alphabetically. In this publication, we present the conservation profiles of 58 species belonging to the famillies alphabetically arranged between Oecobiidae and Salticidae, which encompassed Oecobiidae, Oonopidae, Orsolobidae, Oxyopidae, Palpimanidae, Philodromidae, Pholcidae, Pisauridae, Prodidomidae and Salticidae.Peer reviewe

    Globally distributed occurrences utilised in 200 spider species conservation profiles (Arachnida, Araneae)

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    Background Data on 200 species of spiders were collected to assess the global threat status of the group worldwide. To supplement existing digital occurrence records from GBIF, a dataset of new occurrence records was compiled for all species using published literature or online sources, from which geographic coordinates were extracted or interpreted from locality description data. New information A total of 5,104 occurrence records were obtained, of which 2,378 were from literature or online sources other than GBIF. Of these, 2,308 had coordinate data. Reporting years ranged from 1834 to 2017. Most records were from North America and Europe, with Brazil, China, India and Australia also well represented.Peer reviewe

    A trial of a job-specific workers' health surveillance program for construction workers: study protocol

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    <p>Abstract</p> <p>Background</p> <p>Dutch construction workers are offered periodic health examinations. This care can be improved by tailoring this workers health surveillance (WHS) to the demands of the job and adjust the preventive actions to the specific health risks of a worker in a particular job. To improve the quality of the WHS for construction workers and stimulate relevant job-specific preventive actions by the occupational physician, we have developed a job-specific WHS. The job-specific WHS consists of modules assessing both physical and psychological requirements. The selected measurement instruments chosen, are based on their appropriateness to measure the workers' capacity and health requirements. They include a questionnaire and biometrical tests, and physical performance tests that measure physical functional capabilities. Furthermore, our job-specific WHS provides occupational physicians with a protocol to increase the worker-behavioural effectiveness of their counselling and to stimulate job-specific preventive actions. The objective of this paper is to describe and clarify our study to evaluate the behavioural effects of this job-specific WHS on workers and occupational physicians.</p> <p>Methods/Design</p> <p>The ongoing study of bricklayers and supervisors is a nonrandomised trial to compare the outcome of an intervention (job-specific WHS) group (n = 206) with that of a control (WHS) group (n = 206). The study includes a three-month follow-up. The primary outcome measure is the proportion of participants who have undertaken one or more of the preventive actions advised by their occupational physician in the three months after attending the WHS. A process evaluation will be carried out to determine context, reach, dose delivered, dose received, fidelity, and satisfaction. The present study is in accordance with the TREND Statement.</p> <p>Discussion</p> <p>This study will allow an evaluation of the behaviour of both the workers and occupational physician regarding the preventive actions undertaken by them within the scope of a job-specific WHS.</p> <p>Trial registration</p> <p><a href="http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=3012">NTR3012</a></p

    The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase

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    The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile observatory designed to address the Hot and Energetic Universe science theme, selected in November 2013 by the Survey Science Committee. Based on a large format array of Transition Edge Sensors (TES), it aims to provide spatially resolved X-ray spectroscopy, with a spectral resolution of 2.5 eV (up to 7 keV) over an hexagonal field of view of 5 arc minutes (equivalent diameter). The X-IFU entered its System Requirement Review (SRR) in June 2022, at about the same time when ESA called for an overall X-IFU redesign (including the X-IFU cryostat and the cooling chain), due to an unanticipated cost overrun of Athena. In this paper, after illustrating the breakthrough capabilities of the X-IFU, we describe the instrument as presented at its SRR, browsing through all the subsystems and associated requirements. We then show the instrument budgets, with a particular emphasis on the anticipated budgets of some of its key performance parameters. Finally we briefly discuss on the ongoing key technology demonstration activities, the calibration and the activities foreseen in the X-IFU Instrument Science Center, and touch on communication and outreach activities, the consortium organisation, and finally on the life cycle assessment of X-IFU aiming at minimising the environmental footprint, associated with the development of the instrument. Thanks to the studies conducted so far on X-IFU, it is expected that along the design-to-cost exercise requested by ESA, the X-IFU will maintain flagship capabilities in spatially resolved high resolution X-ray spectroscopy, enabling most of the original X-IFU related scientific objectives of the Athena mission to be retained. (abridged).Comment: 48 pages, 29 figures, Accepted for publication in Experimental Astronomy with minor editin

    The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase

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    The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory. Athena is a versatile observatory designed to address the Hot and Energetic Universe science theme, as selected in November 2013 by the Survey Science Committee. Based on a large format array of Transition Edge Sensors (TES), X-IFU aims to provide spatially resolved X-ray spectroscopy, with a spectral resolution of 2.5 eV (up to 7 keV) over a hexagonal field of view of 5 arc minutes (equivalent diameter). The X-IFU entered its System Requirement Review (SRR) in June 2022, at about the same time when ESA called for an overall X-IFU redesign (including the X-IFU cryostat and the cooling chain), due to an unanticipated cost overrun of Athena. In this paper, after illustrating the breakthrough capabilities of the X-IFU, we describe the instrument as presented at its SRR (i.e. in the course of its preliminary definition phase, so-called B1), browsing through all the subsystems and associated requirements. We then show the instrument budgets, with a particular emphasis on the anticipated budgets of some of its key performance parameters, such as the instrument efficiency, spectral resolution, energy scale knowledge, count rate capability, non X-ray background and target of opportunity efficiency. Finally, we briefly discuss the ongoing key technology demonstration activities, the calibration and the activities foreseen in the X-IFU Instrument Science Center, touch on communication and outreach activities, the consortium organisation and the life cycle assessment of X-IFU aiming at minimising the environmental footprint, associated with the development of the instrument. Thanks to the studies conducted so far on X-IFU, it is expected that along the design-to-cost exercise requested by ESA, the X-IFU will maintain flagship capabilities in spatially resolved high resolution X-ray spectroscopy, enabling most of the original X-IFU related scientific objectives of the Athena mission to be retained. The X-IFU will be provided by an international consortium led by France, The Netherlands and Italy, with ESA member state contributions from Belgium, Czech Republic, Finland, Germany, Poland, Spain, Switzerland, with additional contributions from the United States and Japan.The French contribution to X-IFU is funded by CNES, CNRS and CEA. This work has been also supported by ASI (Italian Space Agency) through the Contract 2019-27-HH.0, and by the ESA (European Space Agency) Core Technology Program (CTP) Contract No. 4000114932/15/NL/BW and the AREMBES - ESA CTP No.4000116655/16/NL/BW. This publication is part of grant RTI2018-096686-B-C21 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”. This publication is part of grant RTI2018-096686-B-C21 and PID2020-115325GB-C31 funded by MCIN/AEI/10.13039/501100011033

    Measuring diversity and abundance of invertebrates in Ahuriri, Coopers Knob and Orongomai Reserves in the Port Hills, Canterbury

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    The Port Hills Rangers (Greenspace Unit, Christchurch City Council) in conjunction with Environment Canterbury are ecologically restoring several reserves on the Port Hills of Canterbury. Vegetation, birds and invertebrates are being monitored to collect baseline information on presence and abundance of the taxa. This study, combined with the previous surveys, will provide baseline invertebrate data for comparisons in future years. It may also enable some effects of ecological restoration through pest management to be measured. This work reports on the invertebrate abundance and diversity of three reserves on the Port Hills using three sampling methods in an attempt to corroborate the use of the non-destructive methods. The two sites showing the highest diversities (Ahuriri and Coopers Knob) and lowest (Orongomai), over the previous two years were selected for monitoring over the 2005-6 period. Only three sites were chosen due to the extra work needed to carry out the pitfall trapping and identifications. This report discusses results and suggests possible future research
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