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Reinhard Gerecke - One of the best experts on this subject based on the ideXlab platform.
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six species in one evidence of cryptic speciation in the hygrobates fluviatilis complex acariformes hydrachnidia hygrobatidae
Systematic & Applied Acarology, 2017Co-Authors: Vladimir Pesic, Yunus Esen, Mahdieh Asadi, Harry Smit, Reinhard Gerecke, Mirela Cimpean, Miroslawa Dabert, Peter Martin, Ana Savic, Elisabeth SturAbstract:Abstract Water mites of the genus Hygrobates are widely distributed in all biogeographic regions except the Antarctic. Palaearctic Hygrobates species with reticulated soft integument generally have been considered as representatives of one common and widely distributed species, Hygrobates fluviatilis Strom, 1768. Based on partial COI sequences (DNA-barcodes) and statistical analysis of morphological data, we show that these mites belong to six distinct lineages. Two of them are widely distributed in Central Europe: Hygrobates fluviatilis here redescribed based on a neotype designated from the type locality in Norway, and a species new to science, H. arenarius Smit & Pesic. The four remaining lineages represent additional species new to science that appear to have more restricted distributions: H. corsicus Pesic & Smit (Corsica, Sardinia), H. marezaensis Pesic & Dabert (Montenegro, Albania, Croatia), H. turcicus Pesic, Esen & Dabert (Turkey), and H. persicus Pesic & Asadi (Iran, E Turkey). Statistical morp...
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the water mites of the genus atractides koch 1837 acari hydrachnidia hygrobatidae in corsica and sardinia
Zoosystema, 2014Co-Authors: Reinhard GereckeAbstract:ABSTRACT Based on bibliographic data, material from coll. E. Angelier and own field work of the author done in the late 20th century, a survey is given on the diversity and distribution of spring- and stream-dwelling water mites of the genus Atractides Koch, 1837 on Corsica and Sardinia. Published information on presence of Atractides in the area covered was restricted to Corsica (Angelier 1954a, b; Santucci 1965, 1971, 1977; Giudicelli 1970; Gerecke & Di Sabatino 2013). Redescriptions are given of the incompletely documented species Atractides gracilipes (E. Angelier, 1951) (no more documented by type material) and A. corsicus E. Angelier, 1954 (of which six syntypes could be detected in NHMB). Published records (in brackets) are referred to the species A. robustus (Sokolow, 1940) and A. acutirostris Motas & Angelier, 1928. In total, 24 Atractides species are now known from the two islands, 50% of them recorded here for the first time: Atractides allgaier Gerecke, 2003, A. clavipes Lundblad, 1954, A. fon...
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water mites of the genus atractides koch 1837 acari parasitengona hygrobatidae in the western palaearctic region a revision
Zoological Journal of the Linnean Society, 2003Co-Authors: Reinhard GereckeAbstract:The western Palaearctic species of the water mite genus Atractides are revised, based on the available type material, data published in the literature, and additional material from various collections. This paper includes the following: (1) a survey of the classification history of the genus, with description of all important morphological features, including a brief discussion of the apomorphic characters of Atractides and its presumed sister-group relations; (2) documentation of variability and seasonal changes of morphological indices for a selected species, A. nodipalpis; (3) a detailed description and/or discussion of all published taxa, with designation of lectotypes, definition of diagnostic character combinations, and identification of species dubiae; (4) a dichotomic determination table for the accepted species in the study area. The main object of this study is to animate world-wide systematic and ecological work on this important genus, which is currently hampered by taxonomic confusion. Above species level, the following synonyms are confirmed: Tetramegapus, Taeniomegapus, Megapoides = Atractides; Rhynchomegapus = Tympanomegapus. The following new synonyms are proposed: Octomegapus, Iranomegapus = Atractides. Tympanomegapus and Polymegapus are redefined and accepted as distinct subgenera, while Maderomegapus is degraded to subgenus level. © 2003 The Linnean Society of London. Zoological Journal of the Linnean Society, 2003, 138, 141–378.
Harry Smit - One of the best experts on this subject based on the ideXlab platform.
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new records of water mites acari hydrachnidia from the khuzestan province south iran with description of three new species
Zootaxa, 2019Co-Authors: Vladimir Pešić, Isa Etemadi, Mahdieh Asadi, Harry SmitAbstract:New records of water mites (Acari: Hydrachnidia) from the Khuzestan Province of Iran are presented. Three species, i.e. Torrenticola khuzestanica, T. neoungeri (Torrenticolidae), and Atractides khuzestanicus (Hygrobatidae) are described as new to science.
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new records of water mites acari hydrachnidia from the western himalaya with the description of four new species
Systematic & Applied Acarology, 2019Co-Authors: Vladimir Pešić, Harry Smit, Pankaj BahugunaAbstract:New records of water mites (Acari: Hydrachnidia) from the Uttarakhand State of India are presented. Four species, i.e. Torrenticola uttarakhandensis, T. chatterjeei (Torrenticolidae), Atractides indicus and Hygrobates dobriyali (Hygrobatidae) are described as new to science. The first description of the female and deutonymph of Sperchon indicusKumar, Kumar & Pesic, 2007 is given. Atractides cf. incertusLundblad, 1969 is reported as new for the fauna of India.
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six species in one evidence of cryptic speciation in the hygrobates fluviatilis complex acariformes hydrachnidia hygrobatidae
Systematic & Applied Acarology, 2017Co-Authors: Vladimir Pesic, Yunus Esen, Mahdieh Asadi, Harry Smit, Reinhard Gerecke, Mirela Cimpean, Miroslawa Dabert, Peter Martin, Ana Savic, Elisabeth SturAbstract:Abstract Water mites of the genus Hygrobates are widely distributed in all biogeographic regions except the Antarctic. Palaearctic Hygrobates species with reticulated soft integument generally have been considered as representatives of one common and widely distributed species, Hygrobates fluviatilis Strom, 1768. Based on partial COI sequences (DNA-barcodes) and statistical analysis of morphological data, we show that these mites belong to six distinct lineages. Two of them are widely distributed in Central Europe: Hygrobates fluviatilis here redescribed based on a neotype designated from the type locality in Norway, and a species new to science, H. arenarius Smit & Pesic. The four remaining lineages represent additional species new to science that appear to have more restricted distributions: H. corsicus Pesic & Smit (Corsica, Sardinia), H. marezaensis Pesic & Dabert (Montenegro, Albania, Croatia), H. turcicus Pesic, Esen & Dabert (Turkey), and H. persicus Pesic & Asadi (Iran, E Turkey). Statistical morp...
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new records of water mites from southeast asia acari hydrachnidia with the description of two new genera and 12 new species
Acarologia, 2016Co-Authors: Vladimir Pesic, Harry SmitAbstract:Twenty-one species of water mites (Acari, Hydrachnidia) were collected in 2015 during a hydrobiological survey conducted by Burkhard Scharf in Vietnam, Laos and Cambodia. Twelve taxa new to science are described, representing the families Torrenticolidae (Torrenticola laosensis n. sp.), Limnesiidae (Limnesia scharfi n. sp.), Hygrobatidae (Vietnobates oryzae n. gen., n. sp.), Pionidae (Schwoerbelia pioniformis n. gen., n. sp., Forelia gereckei n. sp.), Aturidae (Hexaxonopsis laosensis n. sp., H. cambodiensis n. sp., H. angkoriensis n. sp., Javalbia vietnamica n. sp., Sinaxonopsis laosensis n. sp.), Athienemanniidae (Africasia purpurea n. sp.) and Arrenuridae (Arrenurus contortus n. sp.).
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water mites from mount kinabalu and the crocker range borneo malaysia acari hydrachnidia with the description of 34 new species
Zootaxa, 2014Co-Authors: Harry Smit, Vladimir PesicAbstract:Descriptions are presented of new species of water mites from two mountains in the Malaysian part of Borneo. A new subgenus of the genus Javalbia (Hygrobatidae), i.e. Megapes n. subgen., and 34 new species are described: Limnocharidae: Limnochares (Limnochares) spinosa n. sp.; Oxidae: Oxus (Oxus) fuscus n. sp.; Hydryphantidae: Protzia borneoensis n. sp.; Sperchontidae: Sperchon kinabaluensis n. sp., Sperchonopsis orientalis n. sp.; Hygrobatidae: Hygrobates (Hygrobates) acutipalpis n. sp., H. (Hygrobates) hamatoides n. sp., H. (Hygrobates) striatus n. sp., Atractides (Atractides) neospatiosus n. sp., A. (Atractides) sabahensis n. sp., A. (Atractides) crockerensis n. sp., A. (Atractides) curtisetus n. sp., A.(Tympanomegapus) borneoensis n. sp.; Frontipodopsidae: Frontipodopsis suturalis n. sp.; Aturidae: Javalbia (Javalbia) montana n. sp., J. (Javalbia) solitaria n. sp., J. (Javalbiopsis) borneoensis n. sp., J. (Javalbiopsis) kinabaluensis n. sp., J. (Javalbiopsis) magniseta n. sp., J. (Javalbiopsis) reticulata n. sp., J. (Megapes) uncinata n. sp., Albaxona mahuaensis n. sp., Axonopsis (Axonopsis) longigenitalis n. sp., A. (Axonopsis) rugosa n. sp., A. (Paraxonopsis) truncata n. sp., A. (Brachypodopsis) latipalpis n. sp., A. (Vicinaxonopsis ) caeca n. sp., Erebaxonopsis kipungitensis n. sp., Ljania inconspicua n. sp., L. obliterata n. sp., Albia (Albiella) crocker n. sp., Aturus borneoensis n. sp.; Athienemanniidae: Africasia acuticoxalis n. sp.; Arrenuridae: Thoracophoracarus uniacetabulatus n. sp. A key is presented for the Javalbia species of Borneo. New records are given for 10 further species. In the course of revisional work, lectotypes are designated for the following species: Atractides cognatus (K. Viets) and A. propatulus (K. Viets).
Mark A. Hindell - One of the best experts on this subject based on the ideXlab platform.
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Ecological drivers of marine debris ingestion in Procellariiform Seabirds
Scientific Reports, 2019Co-Authors: Lauren Roman, Elizabeth Bell, Britta Denise Hardesty, Chris Wilcox, Mark A. HindellAbstract:Procellariiform seabirds are both the most threatened bird group globally, and the group with the highest incidence of marine debris ingestion. We examined the incidence and ecological factors associated with marine debris ingestion in Procellariiformes by examining seabirds collected at a global seabird hotspot, the Australasian - Southern Ocean boundary. We examined marine debris ingestion trends in 1734 individuals of 51 Procellariform species, finding significant variation in the incidence of marine debris abundance among species. Variation in the incidence of marine debris ingestion between species was influenced by the taxonomy, foraging ecology, diet, and foraging range overlaps with oceanic regions polluted with marine debris. Among the ecological drivers of marine debris ingestion variability in Procellariiformes, we demonstrate that the combination of taxonomy, foraging method, diet, and exposure to marine debris are the most important determinants of incidence of ingestion. We use these results to develop a global forecast for Procellariiform taxa at the risk of highest incidence of marine debris ingestion. We find seabirds that forage at the surface; especially by surface seizing, diving and filtering, those with a crustacean dominant diet, and those that forage in or near marine debris hotspots are at highest risk of debris ingestion. We predict that family with the highest risk are the storm petrels (Hydrobatidae and Oceanitidae). We demonstrate that the greater the exposure of high-risk groups to marine debris while foraging, the greater the incidence and number of marine debris items will be ingested.
Lauren Roman - One of the best experts on this subject based on the ideXlab platform.
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Ecological drivers of marine debris ingestion in Procellariiform Seabirds
Scientific Reports, 2019Co-Authors: Lauren Roman, Elizabeth Bell, Britta Denise Hardesty, Chris Wilcox, Mark A. HindellAbstract:Procellariiform seabirds are both the most threatened bird group globally, and the group with the highest incidence of marine debris ingestion. We examined the incidence and ecological factors associated with marine debris ingestion in Procellariiformes by examining seabirds collected at a global seabird hotspot, the Australasian - Southern Ocean boundary. We examined marine debris ingestion trends in 1734 individuals of 51 Procellariform species, finding significant variation in the incidence of marine debris abundance among species. Variation in the incidence of marine debris ingestion between species was influenced by the taxonomy, foraging ecology, diet, and foraging range overlaps with oceanic regions polluted with marine debris. Among the ecological drivers of marine debris ingestion variability in Procellariiformes, we demonstrate that the combination of taxonomy, foraging method, diet, and exposure to marine debris are the most important determinants of incidence of ingestion. We use these results to develop a global forecast for Procellariiform taxa at the risk of highest incidence of marine debris ingestion. We find seabirds that forage at the surface; especially by surface seizing, diving and filtering, those with a crustacean dominant diet, and those that forage in or near marine debris hotspots are at highest risk of debris ingestion. We predict that family with the highest risk are the storm petrels (Hydrobatidae and Oceanitidae). We demonstrate that the greater the exposure of high-risk groups to marine debris while foraging, the greater the incidence and number of marine debris items will be ingested.
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Assessing the risks of marine debris ingestion to Procellariiform seabirds
2018Co-Authors: Lauren RomanAbstract:Procellariiform seabirds are among the worlds most threatened species; with over half of species in population decline, and 44% of all species are threatened with extinction. There are 139 extant Procellariiform seabird species distributed globally, with the highest species density occurring in the Australasia region surrounding the Tasman Sea and Southern Ocean. Understanding the threats to seabirds is key for managing and planning for the conservation of this assemblage of threatened species. Ingestion of anthropogenic marine debris, particularly plastics, is common among seabirds globally, and considered an emerging threat to seabird populations. Despite growing awareness of the threat of marine debris, both the incidence of debris ingestion in Australasian seabirds, and the effect of ingested plastics on seabird health and mortality is poorly understood. Though the ubiquity of marine debris ingestion in seabirds is internationally recognised, there is currently no extant baseline data on quantified health effects or mortality associated with marine debris ingestion in seabirds. The nonexistence of baseline mortality data of this potential threat poses a serious impediment to assessing risk of debris interactions, conservation planning and managing declining populations in this group of threatened seabirds. This thesis aims to examine the factors that drive harm associated with ingestion of marine debris in Procellariiform seabirds and predict the scale of mortality expected in the current environment with current levels of marine debris pollution. Specifically, this thesis aims to examine (1) the incidence of marine debris ingestion in Australasian seabirds, (2) the mortality caused by the physical impacts of marine debris ingestion, and (3) the potential chemical and toxicological effects of ingested plastics on the growth, reproduction, and endocrine function of birds and finally (4) estimate the global seabird mortality associated with marine debris ingestion. (1) Procellariiform seabirds were collected dead as beach-wrecked, veterinary casualties and fisheries by-catch across Australia and New Zealand between Jan 2013 and March 2017 to determine the incidence of marine debris ingestion in Australasian seabirds. Following collection, the birds were necropsied and their gastro-intestinal tracts inspected for ingested marine debris, which was removed and quantified. We collected and necropsied 1734 individual seabirds of 51 Procellariform species, covering four families of Procellariiform seabirds; Diomedeidae, Procellariidae, Hydrobatidae and Pelecanoididae. Ingestion of marine debris was found in 32% of individual birds and 31 of 51 species examined. Ingestion of marine debris was found in all Procellariiform seabird families, though we observed considerable variation in the incidence and magnitude of ingested debris among the birds examined. Some taxonomic groupings demonstrated consistent patterns in both incidence and magnitude of marine debris ingestion, while other taxonomic groupings demonstrated great variability. We demonstrated that exposure to marine debris in the environment, diet, foraging strategy and taxonomic group are all important ecological factors driving the incidence of debris ingestion in Procellariiform seabirds. (2) Mortality resulting from physical impacts of marine debris ingestion in Procellariiform seabirds, such as gastro-intestinal obstructions and perforations, was quantified and analysed with statistical methods to establish a dose-response relationship. We found that there is a 20% chance of death from ingesting a single debris item, rising to 100% after consuming 93 items. Obstruction of the gastro-intestinal tract is the leading cause of death. Overall, balloons are the highest-risk debris item; 32 times more likely to result in death than ingesting hard plastic. (3) The potential chemical and toxicological effects of ingested plastic on avian development, reproduction and endocrine disruption was investigated by conducting a laboratory experiment. The experiment is designed to examine the toxicological effect of ingested plastic on endocrine function in a bird species, the Japanese quail, Coturnix japonica. Following OCSPP 890.2100: Avian Two-generation Toxicity Test in the Japanese Quail, we designed a multi-generational plastic feeding experiment to quantify effects of plastic ingestion in a bird. Quail were experimentally fed plastic to monitor the effect on their growth, reproductive output, and endocrine function. We found that the primary adverse effect of plastic ingestion in birds is increased chance of cysts in the male reproductive tract, reduced growth in chicks fed plastic and delayed onset of sexual maturity in females, however these changes did not affect survival or reproductive output. Contrary to expectations, we did not find any other plastic ingestion effects. These results demonstrate that it's likely that the effect of ingested plastic on a birds' heath is primarily driven by the physical space that it occupies and resulting dietary dilution, and that the chemical and endocrine impacts that may affect reproduction and survival are minimal. (4) By combining the incidence of debris ingestion, mortality resulting from the physical effects of debris ingestion and experimentally determined sublethal effects from the three previous chapters and the literature, we estimated global seabird mortality from debris ingestion. We found that over 60% of examined Procellariiform species have a 5% or greater chance of dying of a debris-related cause, and 9 species having a 30% or greater chance of debris-related death. Shearwaters, fulmarine petrels and prions are the assessed groups most likely to die from debris ingestion and would benefit most from initiatives to reduce debris entering the marine environment. Our analysis confirms that plastic pollution is a serious conservation concern to threatened and declining Procellariiform seabirds. By quantifying and modelling the estimated mortality associated with ingestion of marine debris by threatened Procellariiform seabirds, this study has provided baseline data and a framework by which to compare threats to seabirds. With this baseline data and mortality estimate, Procellariiform seabirds can be managed and conservation efforts planned accordingly in response to the marine debris pollution hazard changing through space and across time. This will be the first time internationally that the scale of the threat of marine debris to seabird populations has been quantified and can be included in analyses and decision making when planning conservation initiatives.
Vladimir Pešić - One of the best experts on this subject based on the ideXlab platform.
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new records of water mites acari hydrachnidia from the khuzestan province south iran with description of three new species
Zootaxa, 2019Co-Authors: Vladimir Pešić, Isa Etemadi, Mahdieh Asadi, Harry SmitAbstract:New records of water mites (Acari: Hydrachnidia) from the Khuzestan Province of Iran are presented. Three species, i.e. Torrenticola khuzestanica, T. neoungeri (Torrenticolidae), and Atractides khuzestanicus (Hygrobatidae) are described as new to science.
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new records of water mites acari hydrachnidia from the western himalaya with the description of four new species
Systematic & Applied Acarology, 2019Co-Authors: Vladimir Pešić, Harry Smit, Pankaj BahugunaAbstract:New records of water mites (Acari: Hydrachnidia) from the Uttarakhand State of India are presented. Four species, i.e. Torrenticola uttarakhandensis, T. chatterjeei (Torrenticolidae), Atractides indicus and Hygrobates dobriyali (Hygrobatidae) are described as new to science. The first description of the female and deutonymph of Sperchon indicusKumar, Kumar & Pesic, 2007 is given. Atractides cf. incertusLundblad, 1969 is reported as new for the fauna of India.
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two new species of water mites of the family hygrobatidae acari hydrachnidia from the garhwal himalayas india
Systematic & Applied Acarology, 2016Co-Authors: Vladimir Pešić, Neeraj Kumar, Kapil KumarAbstract:Abstract New records of water mites of the family Hygrobatidae (Acari: Hydrachnidia) from the Garhwal Himalayas (Northern India) are presented. Hygrobates gangeticus and Atractides garhwali are described as new to science.
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further studies on water mites from korea with description of two new species acari hydrachnidia
ZooKeys, 2015Co-Authors: Vladimir Pešić, Ksenia A SemenchenkoAbstract:New records of water mites (Acari: Hydrachnidia) from streams in South Korea are presented. Two species are described as new to science: Torrenticola neodentifera sp. n. (Torrenticolidae) and Atractides ermilovi sp. n. (Hygrobatidae). Five species are reported as first records for Korea: Wandesia (Wandesia) reducta Tuzovskij, 1987, Wandesia (Wandesia) cf. rara Tuzovskij, 1990, Sperchon (Sperchon) orientalis Tuzovskij, 1990, Feltria (Feltria) kuluensis Tuzovskij, 1988 and Atractides (Atractides) constrictus (Sokolow, 1934). The latter species is redescribed and elevated to species rank based on new material from the Russian Far East.