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Showing 1 to 20 of 67 for “"Ephemeroptera"”.
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The Ephemeroptera Larvae of Guatemala
The aquatic insect order Ephemeroptera (mayflies) is a major constituent of stream, and in some cases, lake environments. Although the systematics of the order in North America is relatively well understood, the documentation of Latin American taxa has only recently begun in earnest. This study …
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A Survey of the Ephemeroptera of Pearson Creek, Missouri
Adults and nymphs of the order Ephemeroptera were collected at eight sites along Pearson Creek from June through September, 1976, and February through September, 1977, to determine the species present in the stream. Specimens in the Southwest Missouri State University collection from Pearson Creek …
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A ordem Ephemeroptera no Brasil (Insecta): Taxonomia e diversidade
… melhorar o conhecimento a respeito da ordem Ephemeroptera no Brasil, assim como prover bases para futuros estudos no país, tanto por taxonomistas do grupo, quanto por ecólogos. Para tal foram primeiramente estabelecidas, com base na literatura, as áreas no país menos documentadas com relação …
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A Survey of the Ephemeroptera of North Fork River, Missouri
A year long study of the order Ephemeroptera was undertaken from 5 August, 1988 through 1 August, 1989. Adults and nymphs were collected from nine sites along North Fork River to determine the species composition. Forty-three species of twenty-five genera were collected: Baetisca lacustris, …
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Desenvolvimento pós-embrionário do ovário de Massartella sp. (Ephemeroptera: Leptophlebiidae)
O grupo Ephemeroptera apresenta divergências na literatura em relação ao tipo de ovário descrito, panoístico ou meroístico, além da escassez de estudos sobre a morfologia interna do sistema reprodutor feminino e o desenvolvimento ovariano para a ordem. O objetivo deste estudo foi descrever o …
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Relation between tolerances and distribution of two species of Ephemeroptera
In this study, tolerance limits for a number of environmental factors, taken both singly and in combination, have been determined in the laboratory for aquatic nymphs of two mayflies, Baetis harrisoni Barnard 1932 and Choroterpes (Euthraulus) bugandensis (Kimmins 1956). These limits have been …
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The Mayfly Nymphs (Insecta: Ephemeroptera) of the Guadalupe River Basin, Texas
No abstract prepared.
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The Ecology of Mayflies (Ephemeroptera) in the Guadalupe River Basin, Texas
Distribution, life histories, and production were considered for mayflies in the Guadalupe River basin, Texas. Distribution patterns and species richness were dictated by the stream source; springbrooks had fewer species and were dominated by a single species of South American origin. Streams fed …
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Evolution and phylogeny of basal winged insects with emphasis on mayflies (Ephemeroptera)
<p>Ephemeroptera (mayflies) is a monophyletic group of semi-aquatic pterygote insects, comprising 3083 species, 376 genera, and 37 described families and are present on all continents, excluding Antarctica, being associated with freshwater and brackish water habitats. The order is unique among …
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Bestand und Ökologie der Heptageniidae (Ephemeroptera) in Fließgewässern des indischen Himalaya (Nord-West Indien)
… werden Bestand und Ökologie der Heptageniidae (Ephemeroptera) in Fließgewässern des Kullutal im Nordwesten Indiens erstmals vorgestellt. <br>Das Untersuchungsgebiet am Rande des Himalaja liegt zwischen 31°27" und 31°26" nördlicher Breite und 76°56" und 77°52" östlicher Länge auf etwa 2000 m …
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A biosystematic revision of the Nearctic species of the mayfly genus Isonychia (Ephemeroptera: oligoneuriidae)
The Nearctic species of the genus Isonychia Eaton are revised. Eighteen species are recognized, of which three are described as new; eleven species names are placed in synonymy. Isonychia campestris McDunough is recognized as a fully valid geographically restricted species. Two subgenera, Isonychia …
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Life History and Secondary Production of Caenis latipennis Banks (Ephemeroptera: Caenidae) in Honey Creek, Oklahoma
A study of the life history and secondary production of Caenis latipennis, a caenid mayfly, was conducted on Honey Creek, OK. from August 1999 through September 2000. The first instar nymph was described. Nymphs were separated into five development classes. Laboratory egg and nymph development …
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Effects of the Cle Elum Reservoir on the Ephemeroptera (Mayflies) of the Cle Elum River
… and to evaluate these effects in respect to the Ephemeroptera of the Cle Elum River. Specific objectives were: (1) To determine the effects of the reservoir on current velocity, volume of flow, turbidity, and temperature. (2) To determine the effects of the reservoir on alkalinity, hardness, …
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Leptophlebiidae (Insecta: Ephemeroptera) ocorrentes no Estado do Rio de Janeiro: taxonomia e caracterização biológica das ninfas
The leptophlebiids from Rio de Janeiro State are still poorly known from fawlistic, taxonornic and biological points of view. Until this moment, ten genera of the family Leptophlebiidae were recorded in tbis State: Askola Peters, 1969, Farrodes Peters, 1971, Hagenulopsis Ulmer, 1920, Hermanella …
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The ephemeroptera, plecoptera, and trichoptera of Missouri state parks with notes on biomonitoring, mesohabitat associations, and distribution
… State Parks were sampled for immature and adult Ephemeroptera, Plecoptera, and Trichoptera (EPT) through 2002 and early 2003. All totaled, 34,251 EPT larvae were collected, all specimens of which were identified to the lowest taxon possible. Of approximately 70,000 adult specimens collected, …
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The Life History and Contributions to the Ecology of Camelobaetidius variabilis Wiersema 1998 (Ephemeroptera: Baetidae) in Honey Creek, Oklahoma
A study of the life history and ecology of Camelobaetidius variabilis was conducted in Honey Creek, OK from February 2003-April 2004. Nymph development was assessed using changes in external morphology. Laboratory reared nymphs were used to calculate number of degree days to complete development …
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Ecology of benthic macroinvertebrates in experimental ponds
… of 5 taxa of aquatic insects in the orders Ephemeroptera and Odonata, successional patterns over 2 years of pond development, and precision of 15 biological metrics in a series of 6 replicate experimental ponds from March 1989 to April 1990. I determined voltinism, emergence patterns, larval …
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Biologia alimentar da taxocenose de peixes do Rio Silveira (cabeceira do Rio Pelotas), São José dos Ausentes, Rio Grande do Sul, Brasil
… para Astyanax sp. n. 4 matéria vegetal e Ephemeroptera; para Eurycheilichthys pantherinus larvas de Diptera Simulidae e Ephemeroptera; e em Hemipsilichthys sp. n. I detritos, onde se verificou a presença de diatomáceas e clorofítas. O cálculo do coeficiente de sobreposição alimentar não …
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Determinants of Growth and Survival of Larval Pallid Sturgeon: A Combined Laboratory and Field Approach
… survival for zooplankton and Chironomidae and Ephemeroptera larvae in discrete pallid sturgeon size classes (first feeding larvae, 20 to 30 mm, 30 to 40 mm). We quantified pallid sturgeon prey selection offering zooplankton and Chironomidae and Ephemeroptera larvae to larval pallid sturgeon, …
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