Ernest Bernard

Ernest Bernard
University of Tennessee | UTK · Department of Entomology and Plant Pathology

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145
Publications
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Publications

Publications (145)
Article
The insect-pathogenic fungus Beauveria bassiana (Bb) colonizes several plant species as an endophyte. However, the diversity of plants colonized and the extent of colonization by this fungus have not been summarized comprehensively across all plant species. To fill this knowledge gap, a meta-analysis of published studies (years 2002–2018) on the pe...
Article
Whorled sunflower, Helianthus verticillatus Small, is an endangered (U.S. Fish and Wildlife Service 2014) perennial sunflower species indigenous to the southern United States (Matthews et al. 2002; Ellis et al. 2008). Helianthus verticillatus has a showy yellow floral display in the Fall that attracts a diversity of insect visitors (Strange et al....
Article
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The many decades during which the cultivation of Cannabis sativa (hemp) was strongly restricted by law resulted in little research on potential pathogenic nematodes of this increasingly important crop. The primary literature was searched for hemp-nematode papers, resulting in citations from 1890 through 2021. Reports were grouped into two categorie...
Article
Full-text available
Soil is essential for the sustenance of life. Diverse soil organisms support several biological processes such as organic matter decomposition, mineralization, nutrient cycling, and controlling pests and diseases. Among multicellular soil organisms, nematodes are ubiquitous, functionally diverse, and abundant. Notably, agricultural practices have d...
Article
Whorled sunflower, Helianthus verticillatus Small (Asteraceae), is a federally endangered species (US Fish and Wildlife Service, 2014) growing in only a few locations in Tennessee, Georgia, Mississippi, and Alabama (Matthews et al., 2002; Ellis et al., 2008) and recently in Virginia (Pers. Comm, Edward Schilling) in the United States. This herbaceo...
Article
Helianthus verticillatus, the whorled sunflower, is an endangered species found only in the southern United States (Trigiano et al. 2021) that is being developed for ornamental uses. This sunflower species requires little to no maintenance, produces spectacular floral displays from September into October, and attracts numerous potential pollinators...
Article
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Beauveria bassiana is endophytic in many plant species and has been shown to protect host plants against insect pests and plant pathogens. However, less is known about its activity against plant-parasitic nematodes. In vitro and plant assays were conducted to determine the effect of B. bassiana 11-98 (Bb) on Meloidogyne incognita (root-knot nematod...
Article
A summary is presented of papers published on minor insect orders (MIO) in Zootaxa’s first 20 years, as well as the number of new species described therein. The MIO orders currently covered by the editors and summarized here include Archaeognatha (Microcoryphia), Dermaptera, Embioptera, Siphonaptera, Zoraptera and Zygentoma, as well as the hexapod...
Article
A study was conducted in an onion fields in the locations of Ain Naga (during 2009/2010) and M’zirâa (during 2010/2011) from the Ziban, an arid zone of Algeria. Thrips dynamics are determined by direct collect from plant seedling to harvest. A field of 400m2 is limited, where 40 plants are randomly selected, and checked weekly for thrips presence,...
Article
Full-text available
Helianthus verticillatus Small (whorled sunflower) is a federally endangered plant species found only in the southeastern United States that has potential horticultural value. Evidence suggests that H. verticillatus is self-incompatible and reliant on insect pollination for seed production. However, the identity of probable pollinators is unknown....
Article
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Decomposition of vertebrate remains is a dynamic process that creates localized soil enrichment zones. A growing body of literature has documented effects of vertebrate decomposition on soil pH, electrical conductivity, oxygen levels, nitrogen and carbon speciation, microbial biomass, and microbial successional patterns. However, relatively few stu...
Article
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Forty-four specimens of the millipede Narceus gordanus Chamberlin, 1943 (Spirobolida: Spirobolidae) were collected from Alachua, Citrus, Hernando, and Marion counties in peninsular Florida. Morphometric data were recorded for each. Nematodes were dissected from the intestine of each individual and sorted into morphotaxa. Heth pivari n. sp. (Oxyurid...
Article
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Protura are widespread, but their presence in the Arctic was first noted only ca. 70 years ago and is still little acknowledged. This work compiles taxonomic information on proturans in the Arctic regions and adds unpublished data from Northern Siberia. Currently, this fauna is represented by 23 species in two orders and 14 genera. The large cosmop...
Article
Cellulose and lignin decomposition is crucial for efficient nutrient cycling, yet few studies have been performed regarding the effects of soil fauna on cellulose and lignin decomposition. This study was conducted to better understand the effects of soil fauna on lignin and cellulose decomposition in the Changbai Mountain. Litterbags of two differe...
Article
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Hoplolaimus smokyensis n. sp. is a new species of lance nematode collected in Great Smoky Mountains National Park, USA. Females of H. smokyensis n. sp. have a labial region characterised by six, occasionally five, annules. The basal lip annule is subdivided by about 24 longitudinal striae. The stylet averages 47 μ m long with robust, tulip-shaped s...
Article
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Commensalism is the association of two organisms, one of which derives benefit while the other is unaffected. These relationships are common in nature and in unexpected environments. A good example of commensalism is the survival of nematodes in the intestine of millipedes. The diversity of life capable of living in such an environment is remarkabl...
Conference Paper
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Demand for quinoa (Chenopodium quinoa) is increasing due to its high nutritional content and lack of gluten. In order to reduce costs associated with removal of saponins, sweet varieties (low saponin) are being developed; however, little is known about impact of saponin on resistance to plant pathogens. The objective of this research was to determi...
Article
Full-text available
Human activity has extensively transformed the land surface by agricultural intensification and urbanization. In soil, nematodes are the most abundant invertebrates. The effect of human interventions was assessed on overall richness, overall abundance, richness and abundance of nematodes of each trophic group and colonizer-persister (c-p) guild by...
Article
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The Algerian province of Biskra accounts for most of the date production in the country, especially high-quality dates for export. This crop is threatened by many pests, but the presence and effects of thrips are unknown. A survey of date palm thrips was conducted in Biskra province, located in an arid zone of Algeria, in four palm groves (two east...
Article
Full-text available
Decomposing vertebrates, including humans, result in pronounced changes in surrounding soil biogeochemistry, particularly nitrogen (N) and carbon (C) availability, and alter soil micro- and macrofauna. However, the impacts of subsurface human decomposition, where oxygen becomes limited and microbial biomass is generally lower, are far less understo...
Article
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Stauratostoma shelleyi n. gen., n. sp. is described from the midgut and hindgut of nine species of the millipede family Xystodesmidae collected in the southern Appalachian regions of North Carolina, Tennessee and Alabama. Specimens of S. shelleyi were morphologically examined with differential interference contrast, phase contrast, and scanning ele...
Article
Analysis of transcriptome sequence data from eggs and second-stage juveniles (J2s) of sugar beet cyst nematode (SBCN, Heterodera schachtii) identified the full-length genome of a positive-sense single-stranded RNA virus, provisionally named sugar beet cyst nematode virus 1 (SBCNV1). The SBCNV1 sequence was detected in both eggs and J2s, indicating...
Article
We present the rare case of a 12-year-old girl from Tennessee with domestically acquired aural myiasis.
Article
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European species of Eosentomon are examined. A taxonomic key to identification of 61 Eosentomon species is provided based on body chaetotaxy, shape, and position of sensilla on the foretarsus and shape of sensilla on the maxillary palps. Biogeographically, 13 of the known European Eosentomon species are known only from their type localities.
Chapter
With similar topographies and soils, Kentucky and Tennessee grow many of the same row and field crops, although differences do occur. Tennessee is a significant cotton production state, whereas Kentucky’s production is small. Kentucky has an enormous production of hay and alfalfa, largely in support of its horse industry. Tennessee is a much larger...
Chapter
Alaska has the smallest agricultural base of the 50 states, but has been making serious efforts in recent years to expand it. Even so, Alaska imports more than 95% of its food needs. Nurturing local crop production requires an accurate assessment of actual and potential pests and pathogens, including nematodes. The few surveys conducted in Alaska h...
Article
Full-text available
Intricatonura fjellbergi, gen. nov., sp. nov. (Neanuridae: Neanurinae: Neanurini) is described from temperate North America. The genus has a unique suite of autapomorphic morphological characters: Reduction of labial chaetotaxy to 6 setae, division of DL tubercles on 2nd and 3rd thoracic tergites, rectangular and transverse shape of Di tubercles on...
Poster
Thrips are small insecs, they belong to the order of Thysanoptera, They may harm crops, by direct feeding or by transmitting viruses. Thrips in this study were collected from three Poaceae crops (Avena sativa, Triticum durum, Hordeum vulgare) in Biskra province witch is located in an arid zone in Algeria, representing a suitable climat for thrips d...
Article
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Disparrhopalites naasaveqw n. sp. is described from a cave at Wupatki National Monument, Arizona. It differs from D. patrizii (Cassagnau & Delamare Deboutteville, 1953) in having pigment and a well-developed ungual cavity, and from D. tergestinus Fanciulli, Colla & Dallai, 2005 by having pigment, 8+8 eyes and a well-developed ungual tunica. Dieters...
Conference Paper
Diversity and succession of bacteria-feeding nematodes during the decomposition process.
Article
Intensive collecting for the All-Taxa Biodiversity Inventory in Great Smoky Mountains National Park, United States, yielded many specimens of Arlea judithnajtae n. sp. (Collembola: Isotomidae). This new species differs from other species of Arlea Womersley, 1939 in having a combination of smooth setae, seven large sensilla on Ant. IV, dorsal sensil...
Article
Full-text available
Thrips are the main phytophagous insects on many agricultural crops and plants in Algeria that have not yet been thoroughly studied. These pests have been reported as vectors of viruses. The investigation was conducted on vegetable crops between 2014 and 2016 in six arid area sites at Biskra. Thrips species were sampled from 14 vegetable crops....
Article
Two new genera and five new species of Tullbergiidae (Collembola) are described from the North American Appalachian zone in eastern Tennessee and western North Carolina. Ameritulla n. gen. is established for species with 15 setae on the middle tibiotarsus, blunt papilla A on the labial palpus, two long rows of vesicles in the postantennal organ (PA...
Article
Full-text available
Twenty-four individuals of Narceus gordanus (Diplopoda: Spirobolidae) were collected in Ocala National Forest, FL, between November 2013 and July 2014. Each specimen was dissected to extract the intestine, which was removed and examined for parasitic nematodes. Coronostoma claireae n. sp. was collected from the hindgut and midgut of 10 specimens, a...
Article
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Pityopsis ruthii is a federally endangered plant, endemic to riparian areas of the Hiwassee and Ocoee rivers in southeastern Tennessee. The population size and spatial distribution of this species along the Ocoee River has been documented since 1985, yet about 90% of P. ruthii plants are recorded within a portion of the Hiwassee River. Our ongoing...
Article
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There are many nematode species that, following formal description, are seldom mentioned again in the scientific literature. Lobocriconema thornei and L. incrassatum are two such species, described from North American forests, respectively 37 and 49 years ago. In the course of a 3-year nematode biodiversity survey of North American ecoregions, spec...
Article
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Whorled sunflower (Helianthus verticillatus Small, family Asteraceae) (Matthews et al. 2002) is an endangered, herbaceous perennial plant that occurs only at two sites in Tennessee and one each in Alabama and Georgia (Department of the Interior 2013). This species has been sold as an ornamental and is easily asexually propagated by rhizomes in pots...
Article
During taxonomic investigations of nematodes that parasitize millipedes, we reviewed the literature on the nematode genus Robertia Travassos & Kloss, 1961. This literature search also revealed the existence of two other identical genus-group names for taxa in Chordata and Arthropoda: Robertia Boonstra, 1948 (extinct Permian non-mammalian synapsid)...
Article
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The arthropod class Pauropoda was not recognized from China until 1988, but currently 36 known species are now recorded from 27 sites in 18 provinces. This paper contains descriptions of three new species of Decapauropus Remy, 1931: D. biclavula sp. n., D. annulcordatus sp. n. and D. tribulosus sp. n. from Jiangsu, Hunan, Jiangxi and Guangxi Provin...
Article
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Eight species of Collembola are reported from recent collections made in caves on the Polynesian island of Rapa Nui (Eas-ter Island). Five of these species are new to science and apparently endemic to the island: Coecobrya aitorererere n. sp., Cyphoderus manuneru n. sp., Entomobrya manuhoko n. sp., Pseudosinella hahoteana n. sp. and Seira manukio n...
Article
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Type material of three North American Verrucoentomon species was studied: V. imadatei from Alaska, V. mixtum from Alaska and V. canadensis from northern Canada. Additional morphological characters for V. imadatei and V. canadensis are provided. Verrucoentomon mixtum is redescribed and transferred to the genus Imadateiella due to the presence of fou...
Article
Species of Hypogastruridae and Onychiuridae described by D. L. Wray were reexamined and redescribed where necessary from type material and other specimens. Mitchellania hermosa is redescribed and transferred to Ceratophysella. Hypogastrura ireneae is redescribed and H. gravesi is validated with additional material. Hypogastrura gami is synonymized...
Article
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North American specimens of the European invasive springtail Orchesella cincta (L.) were compared to several published European haplotypes in a phylogenetic framework using likelihood methods based on a portion of cytochrome oxidase II (cox2). Our analyses provide direct evidence of at least two distinct introductions of this invasive to North Amer...
Article
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Characterized by small body size, apically rounded/lobed anterior gonopod telopodites, long slender posterior gonopod telopodites, and torsion in the cyphopod receptacles, Floridobolus floydi, n. sp., is described from the southern sector of the Brooksville Ridge in northwestern peninsular Florida. It inhabits sandy “Big Scrub” environments like F....
Conference Paper
Orchesella celsa sensu Christiansen and Bellinger (Collembola: Entomobryidae) is a widespread species exhibiting a broad array of color patterns and occupied habitats. Generally, species exhibiting these characteristics are species complexes. To assess whether O. celsa is really a clade of distinct cryptic species, we conducted a rigorous molecular...
Article
Full-text available
Caves are considered buffered environments in terms of their ability to sustain near-constant microclimatic conditions. However, cave entrance environments are expected to respond rapidly to changing conditions on the surface. Our study documents an assemblage of endemic arthropods that have persisted in Rapa Nui caves, despite a catastrophic ecolo...
Article
Full-text available
Without applying an a priori bias for species boundaries, specimen identities in the plant-parasitic nematode genus Mesocriconema were evaluated by examining mitochondrial COI nucleotide sequences, morphology, and biogeography. A total of 242 specimens that morphologically conformed to the genus were individually photographed, measured, and amplifi...
Article
Our recent reexamination of Nosekiella Rusek, 1974 has shown that only the type species Nosekiella danica (Condé, 1947) and Nosekiella urasi Imadaté, 1981 should remain in this genus. Nosekiella condei (Tuxen, 1955) and Nosekiella hoogstraali Nosek, 1980 differ from N. danica and N. urasi in the number of anterior setae on the metanotum. N. condei...
Article
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Our reexamination of Alaskaentomon Nosek, 1977 demonstrated that the type species, Alaskaentomon fjellbergi Nosek, 1977, and Alaskaentomon condei Nosek, 1981 are united in the presence of two granulated appendices on the calyx of the maxillary gland, filiform sensillum t1 and very long sensillum a on foretarsus, presence of two pairs of A-setae on...
Article
Katianna maryae n. sp. is described from turf and grassy fields in eastern Tennessee, USA. This species is the first of its genus to be noted from temperate North America. It is distinguished from other described Katianna spp. by a combination of the following characters: color pattern of body an intricate mosaic of purple-brown, yellow-orange and...
Article
Based on recent reexamination of types, Vesiculentomon ruseki Nosek, 1977, differs significantly from Vesiculentomon marshalli Rusek, 1974, in composition and shape of maxillary gland, number of anterior setae on metanotum, and shape of foretarsal sensillum t1. A new genus Nosekientomon is erected for V. ruseki. Nosekientomon n. gen. is characteriz...
Article
Full-text available
Caves are considered buffered environments in terms of their ability to sustain near-constant microclimatic conditions. However, cave entrance environments are expected to respond rapidly to changing conditions on the surface. Our study documents an assemblage of endemic arthropods that have persisted in Rapa Nui caves, despite a catastrophic ecolo...