Barry Oconnor

University of Michigan, Ecology and Evolutionary Biology, Faculty Member

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Papers by Barry Oconnor

Primer registro de "Neosuidasia faini" Ranganath & ChannaBasavanna, 1983

by Pedro De La Torre and Barry Oconnor

Two new species of the genus Ceratotarsonemus (Acari: Tarsonemidae)

International Journal of Acarology, 1997

RESUMEN Dos nuevas especies de acaros de la familia Tarsonemidae, Ceratotarsonemus alas y C. hexa... more

Systematic relationships of the Pediculochelidae (Acari : Acariformes)

A Redescription of Speleorodens Michigensis (Ford) N. Comb.(Acari: Ereynetidae), a Nasal Mite of Microtine Rodents, With Comments on Generic Relationships In the …

Journal of the New York Entomological Society, 1978

Page 1. NEW YORK ENTOMOLOGICAL SOCIETY LXXXVI(2), 1978, pp. 123-129 A REDESCRIPTION OF SPELEORODE... more

Group 1 Allergen Genes in Two Species of House Dust Mites, Dermatophagoides farinae and D. pteronyssinus (Acari: Pyroglyphidae): Direct Sequencing, Characterization and Polymorphism

by Pavel Klimov and Barry Oconnor

PLoS ONE, 2014

Group 1 allergens of Dermatophagoides farinae (Der f 1) and D. pteronyssinus (Der p 1) dominate o... more Group 1 allergens of Dermatophagoides farinae (Der f 1) and D. pteronyssinus (Der p 1) dominate overall allergic responses in house dust mite allergy patients. The need for accurate identification and characterization of representative variants of group 1 allergens in any given geographic locality has been emphasized for development of appropriate allergen extracts. Regional amino acid sequence polymorphism has been described but the extent of this polymorphism is not well understood. Such data are completely absent for the USA and many other countries. Most previous studies used cDNA libraries generated by reverse transcriptase (RT-PCR) and/or primers amplifying shorter fragments of this gene. Using novel species-specific primers and direct PCR, we document group 1 allergen gene sequence polymorphism in populations of D. farinae and D. pteronyssinus from the USA and Pakistan. We report two novel introns (nt pos 87 and 291) in both species, and the absence of intron 3 in Der p 1. Thirteen silent and one novel non-synonymous mutation (Tryptophan W 197 to Arginine R 197) were detected in D. farinae. The potential medical significance of the latter mutation is discussed. Two haplotypes of the Der f 1 gene were identified, haplotype 1 (63%) was more frequent than haplotype 2 (18%). Polymorphism in Der f 1 displayed geographical localization, since both haplotypes were present in mite populations from Pakistan whereas haplotype 1 was observed only in the USA. In Der p 1, a silent mutation at nt (aa) position 1011(149) and four non-synonymous mutations at

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NEW SPECIES AND RECORDS OF FUR MITES (ACARI: ASTIGMATA: ATOPOMELIDAE) FROM SOUTHEAST ASIAN RODENTS (RODENTIA: MURIDAE) HOBblE BHflbl M HOBblE HAXOflKM riAPASMTMHECKMX KJ1ELJ4EM (ACARI: ASTIGMATA: ATOPOMELIDAE) HA TPblSYHAX (RODENTIA: MURIDAE) B K)rO-BOCTOHHOl7l A3MM

Field collections of murid rodents in southwestern Borneo, supplemented by examination of museum ... more Field collections of murid rodents in southwestern Borneo, supplemented by examination of museum specimens from various southeast Asian localities, yielded four new and eleven previously described species of fur mites of the genus Listro-phoroidesHii'st(Acan\ Astigmata: Atopomelidae). The following associations are reported: Listrophoroides (Listrophoroides) cremoriventer Fain ex Niviventer cremoriventer from West Malaysia and Borneo; L. (L.

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The mite community associated with Xylocopa latipes (Hymenoptera: Anthophoridae: Xylocopinae) with description of a new type of acarinarium

Http Dx Doi Org 10 1080 01647959308683975, Mar 17, 2009

Seven species of phoretic mites were collected from museum specimens of Xylocopa latipes from Ind... more Seven species of phoretic mites were collected from museum specimens of Xylocopa latipes from Indonesia: Dinogamasus perkinsi, Hypoaspis greeni, Cheletophyes apicola, Tarsonemus platynopodae, Sennertia hipposiderus, S. koptothorsomae and Horstia helenae. In addition to the abdominal acarinarium housing D. perkinsi and other species, this and certain other palaeotropical Xylocopa species possess a pair of acarinaria formed by invaginations of the lateral mesoscutum and mesoscutellum. InX.latipes, these acarinaria housed only C. apicola. The evolutionary ecology of this community is discussed.

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Otodectes cynotis (Sarcoptiformes: Psoroptidae): New Records on Wild Carnivores in Brazil With a Case Report

Journal of Medical Entomology

The genus Otodectes Canestrini 1894, comprises an unique species, Otodectes cynotis (Hering, 1838... more The genus Otodectes Canestrini 1894, comprises an unique species, Otodectes cynotis (Hering, 1838), that is responsible for the ‘ear mange’ in terrestrial carnivores worldwide. Here we report its occurrence in four Brazilian host species from the southeastern region, based on records from Carnivora in the Acari Collection of the Butantan Institute, São Paulo state (IBSP). We also register a case report of a crab-eating fox, Cerdocyon thous L. 1758 found parasitized by this mite species.

Historical and Geographical Patterns in Knemidokoptes Mite Infestations in Southern California Birds

Western Birds

We investigated the causes of toe and foot loss and other deformities long observed in urban Brew... more We investigated the causes of toe and foot loss and other deformities long observed in urban Brewer's Blackbirds (Euphagus cyanocephalus) in southern California. Histopathologic evaluation showed that afflicted individuals suffered from infestations of mites compatible with Knemidokoptes spp. (scaly-leg mites). We developed a case definition based on gross lesions in confirmed cases and the scientific literature to search two large ornithological collections for specimens exhibiting these lesions. in evaluating specimens among seven species of the family icteridae, we found 34 specimens in the two collections with lesions consistent with Knemidokoptes spp. Species afflicted included the red-winged Blackbird (Agelaius phoeniceus; 12 of 978 specimens), Brewer's Blackbird (10/337 specimens), tricolored Blackbird (A. tricolor; 4/101 specimens), Brown-headed Cowbird (Molothrus ater; 4/828 specimens), and Great-tailed Grackle (Quiscalus mexicanus; 4/224 specimens). the earliest cluster of California specimens dated to 1962. Fourteen of the 34 specimens exhibiting the condition were collected since 1999. no specimens of the yellow-headed Blackbird (Xanthocephalus xanthocephalus; 0 of 214 specimens) or Western Meadowlark (Sturnella neglecta; 0/278) were found with the condition.

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Evaluation of Proctophyllodes huitzilopochtlii on feathers from Anna's (Calypte anna) and Black-chinned (Archilochus alexandri) Hummingbirds: Prevalence assessment and imaging analysis using light and tabletop scanning electron microscopy

PloS one, 2018

Proctophyllodes huitzilopochtlii Atyeo & Braasch 1966 (Acariformes: Astigmata: Proctophyllodidae)... more Proctophyllodes huitzilopochtlii Atyeo & Braasch 1966 (Acariformes: Astigmata: Proctophyllodidae), a feather mite, was found on feathers collected from five hummingbird species in California. This mite has not been previously documented on feathers from Anna's (Calypte anna [Lesson 1829]) or Black-chinned (Archilochus alexandri [Bourcier & Mulsant 1846]) Hummingbirds. A total of 753 hummingbirds were evaluated for the presence of mites by species (Allen's n = 112; Anna's n = 500; Black-chinned n = 122; Rufous n = 18; Calliope n = 1), sex (males n = 421; females n = 329; 3 unidentified), and age (juvenile n = 199; after-hatch-year n = 549; 5 unidentified). Of these 753 hummingbirds evaluated, mites were present on the rectrices of 40.9% of the birds. Significantly more Anna's Hummingbirds were positive for rectricial mites (59.2%) compared with 8.2% of Black-chinned, 0.9% of Allen's, 5.6% of Rufous Hummingbirds, and 0% for Calliope (p-value < 0.0001). Across al...

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Investigating species boundaries using DNA and morphology in the mite Tyrophagus curvipenis (Acari: Acaridae), an emerging invasive pest, with a molecular phylogeny of the genus Tyrophagus

Experimental & applied acarology, 2018

Mites of the genus Tyrophagus (Acari: Acaridae) are among the most widespread and common mites, i... more Mites of the genus Tyrophagus (Acari: Acaridae) are among the most widespread and common mites, inhabiting diverse natural and anthropogenic habitats. Some species are pests of agricultural products and stored food and/or live in house dust, causing allergies to humans. We sequenced 1.2 kb of the mitochondrial COI gene for 38 individuals belonging to seven species of Tyrophagus, including T. curvipenis, T. putrescentiae, T. fanetzhangorum, T. longior, T. perniciosus, and T. cf. similis. Molecular phylogenetic analyses (1) recovered two major clades corresponding to the presence or absence of eyespots, and (2) separated all included morphological species. Tyrophagus curvipenis and T. putrescentiae had the lowest between-species genetic distances (range, mean ± SD): 14.20-16.30, 15.17 ± 0.40 (K2P). The highest within-species variation was found in T. putrescentiae 0.00-4.33, 1.78 ± 1.44 (K2P). In this species, we recovered two distinct groups; however, no geographical or ecological di...

Comprehensive phylogeny of acariform mites (Acariformes) provides insights on the origin of the four-legged mites (Eriophyoidea), a long branch

Molecular phylogenetics and evolution, Feb 23, 2017

Eriophyoid, or four-legged mites, represent a large and ancient radiation of exclusively phytopha... more Eriophyoid, or four-legged mites, represent a large and ancient radiation of exclusively phytophagous organisms known from the Triassic (230 Mya). Hypothesizing phylogenetic relatedness of Eriophyoidea among mites is a major challenge due to the absence of unambiguous morphological synapomorphies, resulting in ten published hypotheses placing eriophyoids in various places in the acariform tree of life. Here we test the evolutionary relationships of eriophyoids using six genes and a representative taxonomic sampling of acariform mites. The total evidence analysis places eriophyoids as the sister group of the deep soil-dwelling, vermiform family Nematalycidae (Endeostigmata). This arrangement was supported by the rDNA and CO1 partitions. In contrast, the nuclear protein partition (genes EF1-α, SRP54, HSP70) suggests that Eriophyoidea is sister to a lineage including Tydeidae, Ereynetidae, and Eupodidae (Eupodina: Trombidiformes). On both of these alternative topologies, eriophyoids ap...

Out of Africa: the mite community (Arachnida: Acariformes) of the common waxbill, Estrilda astrild (Linnaeus, 1758) (Passeriformes: Estrildidae) in Brazil

Parasites & vectors, Jan 21, 2017

The common waxbill, Estrilda astrild (L., 1758) (Passeriformes: Estrildidae) is a small passerine... more The common waxbill, Estrilda astrild (L., 1758) (Passeriformes: Estrildidae) is a small passerine bird native to Sub-Saharan Africa that has been introduced into several regions of the world. In the present paper, eight mite species (Acariformes) are reported from this host from Brazil, including three species new to science: Montesauria caravela n. sp., M. conquistador n. sp. (Proctophyllodidae), Trouessartia transatlantica n. sp., T. minuscula Gaud & Mouchet, 1958, T. estrildae Gaud & Mouchet, 1958 (Trouessartiidae), Onychalges pachyspathus Gaud, 1968 (Pyroglyphidae), Paddacoptes paddae (Fain, 1964) (Dermationidae) and Neocheyletiella megaphallos (Lawrence, 1959) (Cheyletidae). Comparative material from Africa was also studied. These mites represent at least three morpho-ecological groups regarding their microhabitats occupied on the bird: (i) vane mites (Montesauria and Trouessartia on the large wing and tail feathers); (ii) down mites (Onychalges); and (iii) skin mites (Paddacop...

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Convergent and unidirectional evolution of extremely long aedeagi in the largest feather mite genus, Proctophyllodes (Acari: Proctophyllodidae): Evidence from comparative molecular and morphological phylogenetics

Molecular phylogenetics and evolution, Sep 1, 2017

Proctophyllodid feather mites (400+ species) are permanent (full-time) symbionts commonly occurri... more Proctophyllodid feather mites (400+ species) are permanent (full-time) symbionts commonly occurring on passerine birds. Phenotypic evolution of these mites appears to be greatly influenced by characters related to reproduction (>87.5% of a total of 32 taxonomically important discrete characters) and male genitalic characters (21.9%). Because sexual selection could the major evolutionary driver in this system, we test the theoretical expectation that genitalic or sexually dimorphic characters should evolve more rapidly and divergently then other characters. We inferred a time-calibrated molecular phylogeny (6 genes, 8571 nt aligned, no missing data) for 133 taxa of proctophyllodid mites and 40 outgroups. Comparisons of the average number of character state changes inferred on 10,696 Bayesian stationary trees indicate that male genitalic or sexually dimorphic characters do not evolve significantly faster than other characters (p=0.537 and p=0.819, respectively). However, among the ...

Detecting ancient codispersals and host shifts by double dating of host and parasite phylogenies: Application in proctophyllodid feather mites associated with passerine birds

Evolution; international journal of organic evolution, Oct 22, 2017

Inferring cophylogeographic events requires matching the timing of these events on both host and ... more Inferring cophylogeographic events requires matching the timing of these events on both host and symbiont (e.g., parasites) phylogenies because divergences of hosts and their symbionts may not temporally coincide, and host switches may occur. We investigate a large radiation of birds (Passeriformes) and their permanent symbionts, the proctophyllodid feather mites (117 species from 116 bird species; six genes, 11,468 nt aligned) using two time-calibration strategies for mites: fossils only and host phylogeography only. Out of 10 putative cophylogeographic events 4 agree in timing for both symbiont and host events being synchronous co-origins or codispersals; three were based on host shifts, but agree in timing being very close to the origin of modern hosts; two disagree; and one large basal mite split was seemingly independent from host phylogeography. Among these events was an ancient (21-25.3 Mya), synchronous codispersal from the Old World leading to the origin and diversification...

Two new genera of pyroglyphid mites, Tuccioglyphus and Marioglyphus, with a key to genera of the World (Acari: Pyroglyphidae)

Zootaxa, 2017

We describe Tuccioglyphus setosus gen. et sp. nov. from the litter of commercially reared laying ... more We describe Tuccioglyphus setosus gen. et sp. nov. from the litter of commercially reared laying hens as well as wild birds in Brazil. The new genus Tuccioglyphus presents a mixture of character states between the two conventional subfamilies, Pyroglyphinae and Dermatophagoidinae. Based on this new unusual genus, we discuss character states delimiting these and other major subfamilies of the house dust mite family, Pyroglyphidae, as well as its most important and species-rich genus Dermatophagoides. An additional new genus, Marioglyphus gen. n., is proposed for Hughesiella valerioi Vargas and Smiley. Both Tuccioglyphus and Marioglyphus are related to the genus Hughesiella. A key to pyroglyphid genera of the World is presented.

Origin of host-parasite associations of Marsupialges misonnei (Acariformes: Psoroptidae)-a parasitological detective story

Parasitology research, Jan 28, 2016

Host associations of permanent ectoparasitic mite Marsupialges misonnei Fain, 1963 (Acariformes: ... more Host associations of permanent ectoparasitic mite Marsupialges misonnei Fain, 1963 (Acariformes: Psoroptidae: Marsupialginae) are analyzed. This species was first recorded from an ethanol-preserved museum specimen of Caluromys philander (Linnaeus, 1758) (Didelphimorphia: Didelphidae) originating from French Guiana. We discovered specimens of M. misonnei from both species known in the carnivore genus Nasua (Carnivora: Procyonidae): N. narica (Linnaeus, 1766) from Panama (collected in the field) and N. nasua (Linnaeus, 1766) from Brazil (collected from dry museum specimen). Two alternative hypotheses about an initial host of this mite (bare-tailed woody opossum or coatis) are discussed. We argue that M. misonnei was originally parasitic on Nasua spp. and occasionally contaminated C. philander from these hosts in the collecting process.

Mites associated with the small ground finch, Geospiza fuliginosa (Passeriformes: Emberizidae), from the Galápagos Islands

The Journal of Parasitology, Dec 1, 2005

In collections of ectoparasites from 368 small ground finches, Geospiza fuliginosa, in population... more In collections of ectoparasites from 368 small ground finches, Geospiza fuliginosa, in populations from the islands of Isabela, Santa Cruz, San Cristóbal, and Santa Fé, in the Galápagos Archipelago, Ecuador, we found 8 species of mites. Four mite species were common on all islands sampled, i.e., Mesalgoides geospizae Mironov and Pérez (Psoroptoididae), Xolalges palmai Mironov and Pérez (Xolalgidae), and 2 new species, Trouessartia geospiza n. sp. (Trouessartiidae) and Proctophyllodes darwini n. sp. (Proctophyllodidae). Four other species were represented by single collections from G. fuliginosa, i.e., Pterodectes atyeoi n. sp. (Proctophyllodidae), Strelkoviacarus sp. (Analgidae), Dermoglyphus sp. (Dermoglyphidae), and Dermanyssus sp. (Dermanyssidae). Authorship of new species names is attributed to the 3 authors who prepared the descriptions (B.M.O.C., J.F., D.L.). Trouessartia geospiza and P. atyeoi were also found on previously collected specimens of other Geospiza species in museum collections. For the 4 common species, we found no differences in prevalence among the 4 island populations, but infection prevalence differed among the 4 species. The mean infection prevalence was high for T. geospizae (89%), moderate for M. geospizae (58%) and X. palmai (44%), and low for P. darwini (26%) in all populations. The feather mite fauna of G. fuliginosa was similar to that of other Geospiza species, and generally related to communities found on other emberizid finches.

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New cheyletid mites (Acari, Cheyletidae) associated with birds

Acta Parasitologica, 2003

A new genus and six new species of the family Cheyletidae (Acari) associated with birds are descr... more A new genus and six new species of the family Cheyletidae (Acari) associated with birds are described. Among them, three species inhabit quills of feathers, Picocheyletus tricholaemae gen. nov., sp. nov. from Tricholaema hirsuta flavipunctata (Capitonidae) in Gabon, Metacheyletia amazonae sp. nov. fromAmazona amazonica (Psittacidae) in Guyana, and Cheletopsis thalasseus sp. nov. from Sterna sandviciensis (Laridae) in the USA. Three other species are skin parasites, Apodicheles collocalia sp. nov. from Collocalia esculenta (Apodidae), and Neocheyletiella nectarinia sp. nov. from Nectarinia jugularis (Nectariniidae), both from the Philippines, and Neocheyletiella aegithali sp. nov. from Aegithalos concinnus (Aegithalidae) in Pakistan.

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Taxonomic comments on the genus Grandiella Lombardini, 1939 (Acari: Canestriniidae)

Http Dx Doi Org 10 1080 01647950408684379, Mar 17, 2009

The genus name Grandiella Lombardini, 1939, is restored, and the replacement name Grandiellina Fa... more The genus name Grandiella Lombardini, 1939, is restored, and the replacement name Grandiellina Fain, 1989, is placed as a junior objective synonym because the supposed senior homonym, Grandiella Williams, 1928, is shown to be a nomen nudum. The following new combinations are proposed: Grandiella longini, G. marinae, G. rogeri, G. soniae, and G. tacjannae (all from Grandiellina), and Canestriniella batocerae (from Grandiella).

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