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Crawfordville, FL, United States

Oh J.T.,Seton Hall University | Epler J.H.,461 Tiger Hammock Road | Bentivegna C.S.,Seton Hall University
Bulletin of Entomological Research | Year: 2014

Studying aquatic benthic macroinvertebrates (BMIs) in the field requires accurate taxonomic identification, which can be difficult and time consuming. Conventionally, head capsule morphology has been used to identify wild larvae of Chironomidae. However, due to the number of species and possible damage and/or deformity of their head capsules, another supporting approach for identification is needed. Here, we provide hemoglobin (Hb) protein in hemolymph of chironomids as a new biomarker that may help resolve some of the ambiguities and difficulties encountered during taxonomic identification. Chironomids collected from two locations in Maine and New Jersey, USA were identified to the genus level and in some cases to the species-level using head capsule and body morphologies. The head capsule for a particular individual was then associated with a corresponding Hb protein profile generated from sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Distinct Hb profiles were observed from one group (Thienemannimyia) and four genera (Chironomus, Cricotopus, Dicrotendipes , and Glyptotendipes) of chironomids. Several species were polymorphic, having more than one Hb profile and/or having bands of the same size as those of other species. However, major bands and the combination of bands could distinguish individuals at the genus and sometimes species-level. Overall, this study showed that Hb profiles can be used in combination with head capsule morphology to identify wild chironomids. © Cambridge University Press 2014. Source

Gray E.W.,University of Georgia | Royals C.,Valent BioSciences Corporation | Epler J.H.,461 Tiger Hammock Road | Wyatt R.D.,University of Georgia | And 2 more authors.
Journal of the American Mosquito Control Association | Year: 2012

Chironomid midges are ubiquitous and ecologically important aquatic insects. However, some species can become pests when they occur in extremely high numbers, particularly those that colonize man-made habitats. Chironomus calligraphus is a Neotropical, pan-American species that has recently been found in the Nearctic region. This paper represents the 1st reported occurrence of C. calligraphus in Georgia. Extensive larval populations were found in the leaf sheaths and root masses of cattails and in the firm sandy substrates of a wastewater lake at an industrial site in coastal Georgia. Chironomus calligraphus was causing a significant economic impact at this site. © 2012 by The American Mosquito Control Association, Inc. Source

Nkubaye E.,Institute des science Agronomique du Burundi | Nzigidahera B.,Institute National Pour Lenvironnement Et La Conservation Of La Nature | Epler J.H.,461 Tiger Hammock Road | Cuda J.P.,University of Florida | Overholt W.A.,University of Florida
Annals of the Entomological Society of America | Year: 2012

To search for potential biological control agents of the aquatic weed, Hydrilla verticillata (L.f.) Royle, emerging chironomid adults were collected from aquatic macrophytes sampled between 2007 and 2009 from near shore sites in Lake Tanganyika, Burundi. Initial surveys identified H. verticillata populations at all sampled locations between Bujumbura and Nyanza Lac. Twenty-six (26) species of Chironomidae emerged from collections of four plant species; Hydrilla, Ceratophyllum demersum variety apiculatum (Cham.) Asch., Potamogeton schweinfurthii A.Benn., and Vallisneria spiralis f. aethiopica (Fenzl) T.Durand and Schinz. Twenty-four of the chironomid species were new country records, but none of them represented undescribed species. Dicrotendipes fusconotatus (Kieffer) dominated the chironomid community, comprising 82% of 32,090 reared adults. The six most common species contributed over 96% of the total midge fauna. Most species were uncommon or rare; nine species were represented by 10 or fewer specimens. A species accumulation curve for the 25 chironomid species reared from Hydrilla suggested that our sampling completely describes the community associated with this plant in northern Lake Tanganyika. Quantitative β-diversity values indicated that chironomid communities of the two Hydrocharitaceae species, Hydrilla and Vallisneria, were most similar to each other, even though they have very different growth forms. Chironomids also emerged in greater numbers from the two Hydrocharitaceae than from the other plants. No chironomid species, including Polypedilum wittei Freeman and Polypedilum dewulfi Goetghebuer, two species formerly considered for possible biological control of Hydrilla, were specific to that plant. Polypedilum species emerged from all sampled aquatic macrophytes. No chironomid-caused damage was seen on Hydrilla. African Chironomidae do not appear to be suitable candidates for biological control of Hydrilla. © 2012 Entomological Society of America. Source

The adult male and female, pupa and larva of a new species, Bryophaenocladius chrissichuckorum, are described from Heggie's Rock, Georgia, U.S.A. Males and females of the species are brachypterous; males have a hypopygium inversum. Pupae differ from other described Bryophaenocladius by the presence of three pairs of small setae on the prefrons. Larvae have a mentum with 2 broad median teeth and AR of about 0.99, but are not realistically separable from many other Bryophaenocladius species. The immature stages inhabit shallow ephemeral pools. © 2012, Magnolia Press. Source

A new species, Scirtes goliai Epler, is described from southern Florida, the Bahamas and the Cayman Islands. It is distinguished by its small size, oblong habitus, brown coloration, laminate prosternum and distinctive genitalia. The species appears to be associated with mangroves. Copyright © 2012 Magnolia Press. Source

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