The spatial distribution of chironomid communities in the littoral zone (0-20 m) of the western coast of the southern Baikal basin is investigated. The fauna is composed of 16 species and forms of chironomid larvae, comprising 10 communities. It has been found that the communities are characterized by rather poor species diversity; Shannon’s index varies from 0.7 to 2.1 bit. Their distribution is affected by hydro-lithodynamic conditions, type of bottom sediments and macrophyte development. The peak of maximal biomass of chironomid larvae on the facies of non-rounded rock debris near Berezovy Cape is recorded in spring.
{"title":"Chironomus Newsletter on Chironomidae Research 27","authors":"Alyssa M. Anderson, T. Ekrem, P. Langton","doi":"10.5324/CJCR.V0I26.1657","DOIUrl":"https://doi.org/10.5324/CJCR.V0I26.1657","url":null,"abstract":"The spatial distribution of chironomid communities in the littoral zone (0-20 m) of the western coast of the southern Baikal basin is investigated. The fauna is composed of 16 species and forms of chironomid larvae, comprising 10 communities. It has been found that the communities are characterized by rather poor species diversity; Shannon’s index varies from 0.7 to 2.1 bit. Their distribution is affected by hydro-lithodynamic conditions, type of bottom sediments and macrophyte development. The peak of maximal biomass of chironomid larvae on the facies of non-rounded rock debris near Berezovy Cape is recorded in spring.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70778980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Examination of the holotype of Micropsectra simantoneoa Sasa, Suzuki and Sakai, 1998 revealed that the species should be transferred to the genus Zavrelia . The male adult has hairy eyes, antennae with 10 flagellomeres, a costa ending proximal to the tip of M3+4, and a short and flattened superior volsella. This is the second Zavrelia species from Japan, and the 11th in the world. Article submitted 25. September 2014, accepted 16. October 2014, published 22. December 2014.
{"title":"A redescription of Zavrelia simantoneoa (Sasa, Suzuki and Sakai, 1998) comb. nov.","authors":"Tadashi Kobayashi","doi":"10.5324/CJCR.V0I27.1699","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1699","url":null,"abstract":"Examination of the holotype of Micropsectra simantoneoa Sasa, Suzuki and Sakai, 1998 revealed that the species should be transferred to the genus Zavrelia . The male adult has hairy eyes, antennae with 10 flagellomeres, a costa ending proximal to the tip of M3+4, and a short and flattened superior volsella. This is the second Zavrelia species from Japan, and the 11th in the world. Article submitted 25. September 2014, accepted 16. October 2014, published 22. December 2014.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The male and female imago of Molleriella kaputu n. sp. are described and figured based on specimens collected in NE Tanzania in 1990. The new species can be separated from M. calcarella Saether and Ekrem by having a slightly narrower, parallel sided anal point and weaker setae on the inferior volsella, longer C extension and distinctly shorter tibiae. The specimens were caught in Malaise traps at about 1500 m altitude in the Mazumbai Forest Reserve in the West Usambara Mountains. Article submitted 17. June 2014, accepted 29. November 2014, published 22. December 2014.
根据1990年在坦桑尼亚东北部采集的标本，对卡普图Molleriella kaputu n. sp.的雌雄象进行了描述和定形。新种可以从M. calcarella Saether和Ekrem中分离出来，具有稍窄的平行肛尖和较弱的下腋毛，较长的C延伸和明显较短的胫骨。这些标本是在乌桑巴拉山脉西部Mazumbai森林保护区海拔约1500米的地方用诱捕器捕获的。第17条提交。2014年6月，录取29人。2014年11月，发表22篇。2014年12月。
{"title":"Molleriella kaputu n. sp. from the West Usambara Mountains, NE Tanzania (Diptera: Chironomidae)","authors":"T. Andersen","doi":"10.5324/CJCR.V0I27.1670","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1670","url":null,"abstract":"The male and female imago of Molleriella kaputu n. sp. are described and figured based on specimens collected in NE Tanzania in 1990. The new species can be separated from M. calcarella Saether and Ekrem by having a slightly narrower, parallel sided anal point and weaker setae on the inferior volsella, longer C extension and distinctly shorter tibiae. The specimens were caught in Malaise traps at about 1500 m altitude in the Mazumbai Forest Reserve in the West Usambara Mountains. Article submitted 17. June 2014, accepted 29. November 2014, published 22. December 2014.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Buchonomyia thienemanni Fittkau is recorded from the Czech Republic for the first time based on specimens collected in samples from a section of the River Dyje in Podyji National Park (Moravia) and the Litavka River in the Brdy Mountains (Bohemia).
{"title":"First records of Buchonomyia thienemanni Fittkau (Diptera: Chironomidae) from the Czech Republic","authors":"P. Ashe, J. Moubayed-Breil, Daniel Vondrák","doi":"10.5324/CJCR.V0I27.1711","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1711","url":null,"abstract":"Buchonomyia thienemanni Fittkau is recorded from the Czech Republic for the first time based on specimens collected in samples from a section of the River Dyje in Podyji National Park (Moravia) and the Litavka River in the Brdy Mountains (Bohemia).","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Collections of floating chironomid pupal exuviae are used to monitor water quality and assess ecological conditions. Factors controlling exuviae sinking rates are not well known, although they should have an effect on conclusions that can be drawn from collections. The current study was conducted to determine the rate of sinking under controlled laboratory conditions using water from three streams with different nutrient levels. Sinking rates ranged from less than a day to seven days, depending on microbial activity, nutrient concentrations, temperature and turbulence. Results also varied by genus, with pupal exuviae of Chironomus riparius , Diamesa nivoriunda , Orthocladius ( Euorthocladius ) thienemanni and Eukiefferiella sp. used in experiments. Four species of bacteria and eight genera of fungi colonized and metabolized exuviae, with bacteria dominant early and fungi dominant later in the decomposition process. Decomposition was faster in lightly chitinized abdominal conjunctive areas, which resulted in exuviae breaking apart and sinking. Examination of untreated, dewaxed and dewaxed-deproteinized exuviae indicated that untreated exuviae sank faster. Waxes appeared important for colonization and initial microbial metabolization was delayed when waxes were removed. Results confirm the importance of biological degradation of exuviae in determining floatation times. We predict that streams and other waterbodies with high dissolved nutrients will result in rapidly sinking exuviae, while exuviae in low nutrient waterbodies will float longer. Article submitted 1. October 2014, accepted 18. November 2014, published 22. December 2014.
{"title":"Factors affecting decomposition rates of chironomid (Diptera) pupal exuviae","authors":"R. Kavanaugh, Alexander T. Egan, L. Ferrington","doi":"10.5324/CJCR.V0I27.1700","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1700","url":null,"abstract":"Collections of floating chironomid pupal exuviae are used to monitor water quality and assess ecological conditions. Factors controlling exuviae sinking rates are not well known, although they should have an effect on conclusions that can be drawn from collections. The current study was conducted to determine the rate of sinking under controlled laboratory conditions using water from three streams with different nutrient levels. Sinking rates ranged from less than a day to seven days, depending on microbial activity, nutrient concentrations, temperature and turbulence. Results also varied by genus, with pupal exuviae of Chironomus riparius , Diamesa nivoriunda , Orthocladius ( Euorthocladius ) thienemanni and Eukiefferiella sp. used in experiments. Four species of bacteria and eight genera of fungi colonized and metabolized exuviae, with bacteria dominant early and fungi dominant later in the decomposition process. Decomposition was faster in lightly chitinized abdominal conjunctive areas, which resulted in exuviae breaking apart and sinking. Examination of untreated, dewaxed and dewaxed-deproteinized exuviae indicated that untreated exuviae sank faster. Waxes appeared important for colonization and initial microbial metabolization was delayed when waxes were removed. Results confirm the importance of biological degradation of exuviae in determining floatation times. We predict that streams and other waterbodies with high dissolved nutrients will result in rapidly sinking exuviae, while exuviae in low nutrient waterbodies will float longer. Article submitted 1. October 2014, accepted 18. November 2014, published 22. December 2014.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chironomids form an essential part of the diet of insectivorous birds that feed on emerging aquatic insects in both riparian areas (Lynch et al. 2002, Beck et al. 2013) and other aquatic habitats, providing an important trophic link between the aquatic and the terrestrial environment. High altitude lakes in mountain landscapes are relatively common and valuable habitats that provide vital resources to terrestrial fauna before freezing over in the winter. Chironomids are known to be a major component of the macroinvertebrate fauna of high altitude lakes and are perhaps a particularly important food source during cold weather conditions (Boggero et al. 2006, Fureder et al. 2006, Bouchard et al. 2006).
在河岸地区(Lynch et al. 2002, Beck et al. 2013)和其他水生栖息地，摇尾虫是食虫鸟类的重要食物组成部分，它们以新兴水生昆虫为食，在水生环境和陆地环境之间提供了重要的营养联系。高山景观中的高海拔湖泊是相对常见和有价值的栖息地，在冬季结冰之前为陆地动物提供重要的资源。据悉，腕足类动物是高海拔湖泊大型无脊椎动物群的主要组成部分，可能是寒冷天气条件下特别重要的食物来源(Boggero等人，2006;Fureder等人，2006;Bouchard等人，2006)。
{"title":"The importance of emerging chironomids as a food resource for overwintering passerines in an Iberian high altitude lake","authors":"Luís Braz, B. Oliveira, S. Hughes","doi":"10.5324/CJCR.V0I27.1663","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1663","url":null,"abstract":"Chironomids form an essential part of the diet of insectivorous birds that feed on emerging aquatic insects in both riparian areas (Lynch et al. 2002, Beck et al. 2013) and other aquatic habitats, providing an important trophic link between the aquatic and the terrestrial environment. High altitude lakes in mountain landscapes are relatively common and valuable habitats that provide vital resources to terrestrial fauna before freezing over in the winter. Chironomids are known to be a major component of the macroinvertebrate fauna of high altitude lakes and are perhaps a particularly important food source during cold weather conditions (Boggero et al. 2006, Fureder et al. 2006, Bouchard et al. 2006).","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The orthoclad Thalassosmittia amazonica n. sp. is described based on a male collected in a light trap in the Amazon rainforest. The species is easily separated from its congeners as it has a strongly reduced palp with only a single palpomere. Article submitted 12. October 2014, accepted 10. November 2014, published 22. December 2014.
{"title":"A new Thalassosmittia Strenzke and Remmert, 1957 out of the sea: T. amazonica n. sp. from the Amazon rainforest, Brazil (Diptera: Chironomidae, Orthocladiinae)","authors":"T. Andersen, L. C. Pinho","doi":"10.5324/CJCR.V0I27.1702","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1702","url":null,"abstract":"The orthoclad Thalassosmittia amazonica n. sp. is described based on a male collected in a light trap in the Amazon rainforest. The species is easily separated from its congeners as it has a strongly reduced palp with only a single palpomere. Article submitted 12. October 2014, accepted 10. November 2014, published 22. December 2014.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CHIRONOMUS – Mitteilungen aus der Chironomidenkunde","authors":"Peter H. Langton","doi":"10.5324/cjcr.v0i27.1726","DOIUrl":"https://doi.org/10.5324/cjcr.v0i27.1726","url":null,"abstract":"","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Relative efficiencies of standard dip-net sampling (SDN) versus collections of surface-floating pupal exuviae (SFPE) were determined for detecting Chironomidae at catchment and site scales and at subfamily/tribe-, genus- and species-levels based on simultaneous, equal-effort sampling on a monthly basis for one year during a biodiversity assessment of Bear Run Nature Reserve. Results showed SFPE was more efficient than SDN at catchment scales for detecting both genera and species. At site scales, SDN sampling was more efficient for assessment of a first-order site. No consistent pattern, except for better efficiency of SFPE to detect Orthocladiinae genera, was observed at genus-level for two second-order sites. However, SFPE was consistently more efficient at detecting species of Orthocladiinae, Chironomini and Tanytarsini at the second order sites. SFPE was more efficient at detecting both genera and species at two third-order sites. The differential efficiencies of the two methods are concluded to be related to stream order and size, substrate size, flow and water velocity, depth and habitat heterogeneity, and differential ability to discriminate species among pupal exuviae specimens versus larval specimens. Although both approaches are considered necessary for comprehensive biodiversity assessments of Chironomidae, our results suggest that there is an optimal, but different, allocation of sampling effort for detecting Chironomidae across stream orders and at differing spatial and taxonomic scales. Article submitted 13. August 2014, accepted 31. October 2014, published 22. December 2014.
{"title":"Differential efficiencies of dip-net sampling versus sampling surface-floating pupal exuviae in a biodiversity survey of Chironomidae","authors":"L. Ferrington, W. P. Coffman","doi":"10.5324/CJCR.V0I27.1675","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1675","url":null,"abstract":"Relative efficiencies of standard dip-net sampling (SDN) versus collections of surface-floating pupal exuviae (SFPE) were determined for detecting Chironomidae at catchment and site scales and at subfamily/tribe-, genus- and species-levels based on simultaneous, equal-effort sampling on a monthly basis for one year during a biodiversity assessment of Bear Run Nature Reserve. Results showed SFPE was more efficient than SDN at catchment scales for detecting both genera and species. At site scales, SDN sampling was more efficient for assessment of a first-order site. No consistent pattern, except for better efficiency of SFPE to detect Orthocladiinae genera, was observed at genus-level for two second-order sites. However, SFPE was consistently more efficient at detecting species of Orthocladiinae, Chironomini and Tanytarsini at the second order sites. SFPE was more efficient at detecting both genera and species at two third-order sites. The differential efficiencies of the two methods are concluded to be related to stream order and size, substrate size, flow and water velocity, depth and habitat heterogeneity, and differential ability to discriminate species among pupal exuviae specimens versus larval specimens. Although both approaches are considered necessary for comprehensive biodiversity assessments of Chironomidae, our results suggest that there is an optimal, but different, allocation of sampling effort for detecting Chironomidae across stream orders and at differing spatial and taxonomic scales. Article submitted 13. August 2014, accepted 31. October 2014, published 22. December 2014.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chironomid head capsules from surface sediments in Kamchatka reflect a rich and diverse fauna. We observed a relatively high abundance of head capsules from the subfamily Diamesinae. An unknown morphotype of Tanytarsini, 'Tanytarsini type klein' , was found in the lake sediments of two lakes from Central and southern Kamchatka.
{"title":"Subfossil chironomids from Kamchatka","authors":"L. Nazarova","doi":"10.5324/CJCR.V0I27.1676","DOIUrl":"https://doi.org/10.5324/CJCR.V0I27.1676","url":null,"abstract":"Chironomid head capsules from surface sediments in Kamchatka reflect a rich and diverse fauna. We observed a relatively high abundance of head capsules from the subfamily Diamesinae. An unknown morphotype of Tanytarsini, 'Tanytarsini type klein' , was found in the lake sediments of two lakes from Central and southern Kamchatka.","PeriodicalId":30852,"journal":{"name":"CHIRONOMUS Journal of Chironomidae Research","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70779560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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