Entomology Commons^™

No3 2013 Melon Variety Trial, Rebecca Brown

University of Rhode Island Vegetable Production Research Reports

Descriptions of melon varieties, including disease ratings, trialed at the Gardiner Crop Research Farm of URI, Kingston, RI

Gene Expression Profiling In Winged And Wingless Cotton Aphids, Aphis Gossypii (Hemiptera: Aphididae), Xiaowei Yang, Xiaoxia Liu, Xiangli Xu, Zhen Li, Yisong Li, Dongyan Song, Tian Yu, Fang Zhu, Qingwen Zhang, Xuguo Zhou

Entomology Faculty Publications

While trade-offs between flight capability and reproduction is a common phenomenon in wing dimorphic insects, the molecular basis is largely unknown. In this study, we examined the transcriptomic differences between winged and wingless morphs of cotton aphids, Aphis gossypii, using a tag-based digital gene expression (DGE) approach. Ultra high-throughput Illumina sequencing generated 5.30 and 5.39 million raw tags, respectively, from winged and wingless A. gossypii DGE libraries. We identified 1,663 differentially expressed transcripts, among which 58 were highly expressed in the winged A. gossypii, whereas 1,605 expressed significantly higher in the wingless morphs. Bioinformatics tools, including Gene Ontology, …

Revision Of The Genus Euagathis Szépligeti (Hymenoptera, Braconidae, Agathidinae) From Thailand, With Description Of Three New Species, Cornelis Van Achterberg, Michael J. Sharkey, Eric G. Chapman

Entomology Faculty Publications

The species of the genus Euagathis Szépligeti (Hymenoptera, Braconidae, Agathidinae) from Thailand are revised. Eight species are treated, three new species are described, i.e. Euagathis breviantennata sp.n., E. setosimaculata sp. n. and E. pallitarsis sp. n. Disophrys sogdiana Fahringer, 1937, D. chinensis Fahringer, 1937, and Euagathis sentosus Chen & Yang, 1995, are new junior synonyms of Euagathis chinensis (Holm‑gren, 1868). Euagathis guangxiensis (Chen & Yang, 2006) is a new combination. Lectotypes are designated for Disophrys sogdiana Fahringer, 1937, and D. chinensis Fahringer, 1937. A dichotomous illustrated key to species is presented; links to electronic interactive keys and to distribution …

Transcriptomic Dissection Of Sexual Differences In Bemisia Tabaci, An Invasive Agricultural Pest Worldwide, Wen Xie, Litao Guo, Xiaoguo Jiao, Nina Yang, Xin Yang, Qingjun Wu, Shaoli Wang, Xuguo Zhou, Youjun Zhang

Entomology Faculty Publications

Sex difference involving chromosomes and gene expression has been extensively documented. In this study, the gender difference in the sweetpotato whitefly Bemisia tabaci was investigated using Illumina-based transcriptomic analysis. Gender-based RNAseq data produced 27 Gb reads, and subsequent de novo assembly generated 93,948 transcripts with a N50 of 1,853 bp. A total of 1,351 differentially expressed genes were identified between male and female B. tabaci, and majority of them were female-biased. Pathway and GO enrichment experiments exhibited a gender-specific expression, including enriched translation in females, and enhanced structural constituent of cuticle in male whiteflies. In addition, a putative transformer2 …

Hexapod Herald - Vol. 26, No. 1, February 2014

Hexapod Herald and Other Entomology Department Newsletters

Content: Welcome - Congratulations - Grants - Publications - Meet an Off-Campus Student - Faculty News - Bruner Club News - Blasts from the Past - Condolences (Dr. John (Jack) Campbell) - Retirement Receptions

Nebline, February 2014

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: 4-H Garbology Uses Science to Teach Environmental Responsibility

Food & Health

Family Living

Farm & Acreage

Home & Family Living

Horticulture

Pests & Wildlife

4-H & Youth

Extension Calendar

and other extension news and events

Expression Profiling In Bemisia Tabaci Under Insecticide Treatment: Indicating The Necessity For Custom Reference Gene Selection, Pei Liang, Yajie Guo, Xuguo Zhou, Xiwu Gao

Entomology Faculty Publications

Finding a suitable reference gene is the key for qRT-PCR analysis. However, none of the reference gene discovered thus far can be utilized universally under various biotic and abiotic experimental conditions. In this study, we further examine the stability of candidate reference genes under a single abiotic factor, insecticide treatment. After being exposed to eight commercially available insecticides, which belong to five different classes, the expression profiles of eight housekeeping genes in the sweetpotato whitefly, Bemisia tabaci, one of the most invasive and destructive pests in the world, were investigated using qRT-PCR analysis. In summary, elongation factor 1α …

Population Variation In And Selection For Resistance To Pyrethroid-Neonicotinoid Insecticides In The Bed Bug, Jennifer R. Gordon, Mark H. Goodman, Michael F. Potter, Kenneth F. Haynes

Entomology Faculty Publications

Pyrethroid resistance in bed bugs, Cimex lectularius, has prompted a change to combination products that include a pyrethroid and a neonicotinoid. Ten populations of bed bugs were challenged with two combination products (Temprid SC and Transport GHP). Susceptibility of these populations varied, with the correlated response of the two products indicating cross resistance. We imposed selection on three populations using label rate Temprid, and then reared progeny from unselected and selected strains. All selected strains were significantly less susceptible to Temprid SC than unselected strains. Temprid selected strains were also less susceptible to Transport. The pyrethroid component of Temprid showed …

The Longhorn Beetles (Coleoptera: Cerambycidae) Of Nebraska, Usa: New State Records, A Checklist Of Known Species, And Distribution Maps, Stephen M. Spomer

University of Nebraska State Museum: Entomology Papers

One hundred eighty-three species/subspecies of longhorn beetles are recorded from Nebraska, an increase of 19 species since 1971. The greatest number of recent discoveries have come from sites along the Missouri River, especially Indian Cave State Park in southeastern Nebraska, as well as the Pine Ridge at Chadron, Nebraska.

An Illustrated Id Guide To The Crayfishes Found In Nebraska Native And Non-Native, Steve Schainost

Nebraska Invasive Species Program

There are five crayfishes native to Nebraska. These are:

Orconectes immunis (papershell crayfish)

Orconectes virilis (northern crayfish)

Orconectes neglectus neglectus (ringed crayfish)

Cambarus diogenes (Devil crayfish)

Procambarus gracilis (prairie crayfish)

Three additional non-native crayfishes have also been found here:

Orconectes rusticus (rusty crayfish) [bait tanks and established in two ponds in Omaha]

Procambarus clarkii (red swamp crayfish) [bait tanks]

Procambarus acutus (White River crayfish) [bait tanks]

I will attempt here to provide a photographic guide to field identification, one species per page.

Seasonal Patterns Of Microhabitat Selection By A Sub-Tropical Whip Spider, Phrynus Longipes, In The Luquillo Experimental Forest, Puerto Rico, Caroline A. Curtis, Christopher P. Bloch

Biological Sciences Faculty Publications

Phrynus longipes (Pocock 1894) is a top predator among arboreal invertebrates in the Luquillo Mountains of Puerto Rico, but many aspects of its ecology remain poorly understood. We sampled four of the most abundant tree species in the Luquillo Mountains during the dry and wet seasons of 2008 to evaluate microhabitat preferences of this species. In the dry season, P. longipes occurred significantly less frequently on a palm, Prestoea acuminata var. montana (Arecaceae), than the other tree species. Carapace length and the diameter of the tree on which an individual was found were positively correlated, suggesting competition for substrates. Microhabitat …

Impact Of Impervious Surfaces On Water Quality By Measurement Of Macroinvertebrates In Rock Island And Moline, Illinois, Kara Noonan

Urban Watershed Project

Streams have been degrading in quality since the introduction of impervious surfaces. Water concentrations have been altered as sediment and other pollutants have been introduced from severe erosion from runoff. As the water continues to change, the biotic integrity becomes disturbed. More specifically, aquatic invertebrate populations begin to change. More organisms that can tolerate poor quality streams are thriving as organisms that can only tolerate high quality streams are beginning to run thin. This study strives to find a spatial relationship between impervious surfaces around Rock Island and Moline, Illinois and the water quality within the streams by looking at …

Male-Male Mounting And The Unreliability Of Body Size As A Character For Mate Choice In Male Japanese Beetles (Popillia Japonica Newman), Paul Switzer, Patrick Forsythe, Kipp Kruse

Faculty Research & Creative Activity

Background: Same-sex pairing is common in many animal species. In many insects, same-sex pairing is often thought to be a result of poor sexual discrimination (i.e., a mistake), but few detailed studies of the mechanisms underlying the mistaken pairing have been conducted. Previous studies have found that in the field, a small proportion of Japanese beetle (Popillia japonica) mating pairs consist of two males instead of a male and a female. In the current study, we investigated the relationship between body size, the tendency to mount other males, and the duration of these mounts, in laboratory experiments on male Japanese …

Insects And Humans Share A Complex History, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Cloning, Expression, Sequence Analysis And Homology Modeling Of The Prolyl Endoprotease From Eurygaster Integriceps Puton, Ravi Chandra Yandamuri, Ranjeeta Gautam, Charles Darkoh, Vanitha Dareddy, Mustapha El-Bouhssini, Beatrice A. Clack

Faculty Publications

Eurygaster integriceps Puton, commonly known as sunn pest, is a major pest of wheat in Northern Africa, the Middle East and Eastern Europe. This insect injects a prolyl endoprotease into the wheat, destroying the gluten. The purpose of this study was to clone the full length cDNA of the sunn pest prolyl endoprotease (spPEP) for expression in E. coli and to compare the amino acid sequence of the enzyme to other known PEPs in both phylogeny and potential tertiary structure. Sequence analysis shows that the 5ꞌ UTR contains several putative transcription factor binding sites for transcription factors known to be …

Effectiveness Of Hand Removal For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Ryan M. Cumming

Faculty Research & Creative Activity

Hand removal is often recommended as a method for small-scale control of Japanese beetles (Popillia japonica Newman). In this study, we investigated the effectiveness of daily hand removal for controlling damage by Japanese beetles on grape plants. We also investigated whether the timing of the removal (at 0800, 1400, or 1900 hours, or at all 3 periods) inßuenced the effectiveness of the technique. We found that hand removal signiÞcantly lowered the number of beetles on, and consequently the damage to, grape plants relative to nonremoval controls. Of the single removal treatments, removal of beetles at 1900 hours was most effective, …

Male-Male Mounting And The Unreliability Of Body Size As A Character For Mate Choice In Male Japanese Beetles (Popillia Japonica Newman), Paul V. Switzer, Patrick S. Forsythe, Kipp C. Kruse

Faculty Research & Creative Activity

Background: Same-sex pairing is common in many animal species. In many insects, same-sex pairing is often thought to be a result of poor sexual discrimination (i.e., a mistake), but few detailed studies of the mechanisms underlying the mistaken pairing have been conducted. Previous studies have found that in the field, a small proportion of Japanese beetle (Popillia japonica) mating pairs consist of two males instead of a male and a female. In the current study, we investigated the relationship between body size, the tendency to mount other males, and the duration of these mounts, in laboratory experiments on male Japanese …

Effectiveness Of Hand Removal For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Ryan Cumming

Faculty Research & Creative Activity

Hand removal is often recommended as a method for small-scale control of Japanese beetles (Popillia japonica Newman). In this study, we investigated the effectiveness of daily hand removal for controlling damage by Japanese beetles on grape plants. We also investigated whether the timing of the removal (at 0800, 1400, or 1900 hours, or at all 3 periods) inßuenced the effectiveness of the technique. We found that hand removal signiÞcantly lowered the number of beetles on, and consequently the damage to, grape plants relative to nonremoval controls. Of the single removal treatments, removal of beetles at 1900 hours was most effective, …

Nebline, January 2014

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: 4-H Youth Serve Their Community By Volunteering

Food & Health

Family Living

Farm & Acreage

Home & Family Living

Horticulture

Pests & Wildlife

4-H & Youth

Extension Calendar

Family and Community Education (FCE) Clubs

and other extension news and events

Contributions To An Arthropod Inventory Of Santa Cruz Island, California, Ida Naughton, Michael S. Caterino, Cause Hanna, David Holway

Publications

Arthropods have been understudied on Santa Cruz Island, resulting in an incomplete understanding of these diverse and ecologically important members of island ecosystems. To enhance the current understanding of Santa Cruz Island biodiversity, we sampled arthropods in 2 native plant habitats: island scrub oak (Quercus pacifica) woodland and patches of island morning glory (Calystegia macrostegia ssp. macrostegia). We used 4 standardized sampling techniques to sample arthropods in 16 Q. pacifica woodland plots. We sampled arthropods associated with C. macrostegia by pan trapping within 1 m of blooming morning glory individuals. In total, we sampled over 18,000 …