Entomology Commons^™

Insecticidal Control Of Bemisia Tabaci (Hemiptera: Aleyrodidae) Transmitting Carlavirus On Soybeans And Detection Of The Virus In Alternate Hosts, Difabachew K. Belay, Randy M. Huckaba, Axel M. Ramirez, Jose C. V. Rodrigues, John E. Foster

Department of Entomology: Faculty Publications

A Carlavirus transmitted by Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is an important disease of soybean nurseries in Puerto Rico causing substantial germplasm losses. Insecticide bioassay experiments were conducted at Dow AgroSciences (DAS) Research Station, Santa Isabel, Puerto Rico, either by spraying insecticides on B. tabaci infested soybean leaves or introducing B. tabaci adults onto insecticide-sprayed soybean leaves. Moreover, host plants were surveyed to detect the virus in overwintering hosts that serve as a source of inoculums. The direct spray experiment showed that Nuprid 2F (Imidacloprid), Capture 2 EC (Bifenthrin), Thionex (Endosulfan), Lannate LV (Methomyl), and Dimethoate gave good level ( …

Nebline, May 2012

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: Lincoln’s Biosolids Land Application Program is 20 Years Old

Farm Views

Urban Agriculture

Food & Fitness

Home & Family Living

Horticulture

Environmental Focus

4-H & Youth

Community Focus

Extension Calendar

Nutrition Education Program

Family and Community Education (FCE) Clubs

and other extension news and events

Ecology And Integrated Pest Management Of Western Bean Cutworm Striacosta Albicosta (Smith) (Lepidoptera: Noctuidae) In Field Corn, Silvana L. Vieira De Paula Moraes

Department of Entomology: Dissertations, Theses, and Student Research

Western bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a native pest of dry beans (Phaseolus vulgaris L.) and corn (Zea mays L.), and historically distributed in the western United States. The insect’s recent expansion eastward is documented since 1999. The species is univoltine, the adults typically emerge in the middle of July, lay eggs on corn leaves, and the larvae feed on different corn tissues. In the fourth instar, larvae start colonization of the ear where they feed on kernels. There is a narrow window for management and early detection of the pest in the field is …

Early Season Population Dynamics And Residual Insecticide Effects On Bird Cherry-Oat Aphid, Rhopalosiphum Padi In Arkansas Winter Wheat, Beven Mcwilliams

Graduate Theses and Dissertations

Bird cherry-oat aphid is a common pest of Arkansas winter wheat. This aphid vectors barley yellow dwarf virus which may cause extensive crop damage and yield loss when wheat is infested by virulent aphids in the fall. Some suggest this damage may be avoided using insecticide seed treatments if growers are unable to delay planting, as is recommended. Field population dynamics of bird cherry-oat aphid during fall 2009 and 2010 was assessed through random sampling of whole plants and pan trapping methods to evaluate aphid immigration. The field plots were divided into four subplots treated with a systemic insecticide seed …

Genetic Variation In Field And Laboratory Populations Of The Spined Soldier Bug, Podisus Maculiventris, Kathleen Kneeland, Thomas A. Coudron, Erica Lindroth, David Stanley, John E. Foster

Department of Entomology: Faculty Publications

The predatory spined soldier bug, Podisus maculiventris (Say) (Heteroptera: Pentatomidae), is an economically important and highly valued biological control agent. There is substantial information on the biology, ecology, behavior, and rearing of this stink bug. However, virtually nothing is known of its genetic variation, in natural or domesticated populations. To address this lacuna, we used amplified fragment length polymorphism (AFLP) to assess the genetic variability of field and laboratory populations. Four AFLP universal primer combinations yielded a total of 209 usable loci. The AFLP results showed greater genetic variability between populations from Missouri and Mississippi (both USA), and relatively low …

Early Embryology Of The Insect Oligotoma Saundersii (Embiidina) Using Targeted Genes As Developmental Landmarks, Omar Doria

Theses and Dissertations - UTB/UTPA

Embiidina, or "webspinners", is a small, sexually dimorphic, polyneopterous insect order and is the only order to spin silk throughout their life cycle. Unique morphological features and the phylogenetic position of Embiidina make it an attractive subject for study of the evolution and development of the insect body plan and the origin of novel morphological features. Oligotoma saundersii is easily cultured and a viable laboratory organism. It has a fairly standard short-germ embryogenesis process requiring 453 hours at 28°C with progressive development beginning in the anterior region. Preliminary work on targeted developmental genes has yielded small portions of seven genes. …

The Diets Of Larval And Juvenile Pallid Sturgeon And Shovelnose Sturgeon (Scaphirhynchus Spp.) In The Lower Mississippi River, Audrey Harrison

All Theses

Although North American sturgeon have been the focus of extensive research in the last several decades, more research is essential to ensure their conservation. The free-flowing Lower Mississippi River (LMR) is occupied by two sympatric sturgeon, pallid [ Scaphirhynchus albus (Forbes & Richardson)] and shovelnose sturgeon [Scaphirhynchus platorynchus (Rafinesque)]. These species are considered 'endangered' and 'threatened,' respectively. Recent studies have documented the life history of adult sturgeon in the Mississippi River, but studies focusing on young-of-year and juveniles are limited because young fish are difficult to collect and identifications are problematic. Spawning sites in the LMR are unknown and though …

The Role Of Ascorbic Acid In The Plant-Herbivore Interaction, Kelly Ann Carruthers

Graduate Theses and Dissertations

Ascorbic acid (AsA), vitamin C, is an important molecule that is vital for both human and plant health, because it aids in the detoxification of reactive oxygen species (ROS) caused by various abiotic and biotic stresses including UV, salinity, ozone, and attack from pathogens In order to understand the role of AsA in the plant-herbivore interaction, we looked at the effects of the wound-responsive hormones, jasmonate, wounding, and herbivory on AsA content. Our study is the first to directly compare the effects of wounding and jasmonates on AsA levels in plants. We looked at the effects of wounding and methyl …

Pyrosequencing The Bemisia Tabaci Transcriptome Reveals A Highly Diverse Bacterial Community And A Robust System For Insecticide Resistance, Wen Xie, Qing-Shu Meng, Qing-Jun Wu, Shao-Li Wang, Xin Yang, Ni-Na Yang, Ru-Mei Li, Xiao-Guo Jiao, Hui-Peng Pan, Bai-Ming Liu, Qi Su, Bao-Yun Xu, Song-Nian Hu, Xuguo Zhou, You-Jun Zhang

Entomology Faculty Publications

BACKGROUND: Bemisia tabaci (Gennadius) is a phloem-feeding insect poised to become one of the major insect pests in open field and greenhouse production systems throughout the world. The high level of resistance to insecticides is a main factor that hinders continued use of insecticides for suppression of B. tabaci. Despite its prevalence, little is known about B. tabaci at the genome level. To fill this gap, an invasive B. tabaci B biotype was subjected to pyrosequencing-based transcriptome analysis to identify genes and gene networks putatively involved in various physiological and toxicological processes.

METHODOLOGY AND PRINCIPAL FINDINGS: Using Roche 454 pyrosequencing, …

Population Genetic Structure Of Aedes Polynesiensis In The Society Islands Of French Polynesia: Implications For Control Using A Wolbachia-Based Autocidal Strategy, Corey L. Brelsfoard, Stephen L. Dobson

Entomology Faculty Publications

BACKGROUND: Aedes polynesiensis is the primary vector of Wuchereria bancrofti in the South Pacific and an important vector of dengue virus. An improved understanding of the mosquito population genetics is needed for insight into the population dynamics and dispersal, which can aid in understanding the epidemiology of disease transmission and control of the vector. In light of the potential release of a Wolbachia infected strain for vector control, our objectives were to investigate the microgeographical and temporal population genetic structure of A. polynesiensis within the Society Islands of French Polynesia, and to compare the genetic background of a laboratory strain …

Transmission Of Triticum Mosaic Virus And Its Impact On The Biology Of The Wheat Curl Mite Aceria Tosichella Keifer (Eriophyidae), And An Evaluation Of Management Tactics For The Wheat Curl Mite And The Wheat–Mite–Virus Complex, Anthony J. Mcmechan

Department of Entomology: Dissertations, Theses, and Student Research

The wheat-mite-virus complex is an important production constraint to winter wheat production in the Great Plains, and consists of three viruses; wheat streak mosaic (WSMV), wheat mosaic (WMoV) and Triticum mosaic virus (TriMV). Synergistic interactions between these viruses have resulted in increased rates of replication and transmission of viruses, thus increasing the potential impact on wheat yields. The wheat curl mite (WCM), Aceria tosichella Keifer is the only known vector of the viruses within the wheat-mite-virus complex.

Currently, three colonies of WCM have been characterized by differential responses to mite resistant genes (biotypes) in wheat and differential transmission of WMoV. …

Rapid Spread Of Tomato Yellow Leaf Curl Virus In China Is Aided Differentially By Two Invasive Whiteflies, Huipeng Pan, Dong Chu, Wenqian Yan, Qi Su, Baiming Liu, Shaoli Wang, Qingjun Wu, Wen Xie, Xiaoguo Jiao, Rumei Li, Nina Yang, Xin Yang, Baoyun Xu, Judith K. Brown, Xuguo Zhou, Youjun Zhang

Entomology Faculty Publications

BACKGROUND: Tomato yellow leaf curl virus (TYLCV) was introduced into China in 2006, approximately 10 years after the introduction of an invasive whitefly, Bemisia tabaci (Genn.) B biotype. Even so the distribution and prevalence of TYLCV remained limited, and the economic damage was minimal. Following the introduction of Q biotype into China in 2003, the prevalence and spread of TYLCV started to accelerate. This has lead to the hypothesis that the two biotypes might not be equally competent vectors of TYLCV.

METHODOLOGY/PRINCIPAL FINDINGS: The infection frequency of TYLCV in the field-collected B. tabaci populations was investigated, the acquisition and transmission …

Revision Of The Ant Genus Xenomyrmex (Forel), Jennifer M. Love^, William Mackay*

COURI Symposium Abstracts, Spring 2012

No abstract provided.

Description Of The Female Of Malukandra Heterostyla (Lameere, 1902) (Coleoptera, Cerambycidae, Parandrinae), Antonio Santos-Silva, Daniel Heffern

Insecta Mundi

The female of Malukandra heterostyla (Lameere, 1902) (Coleoptera: Cerambycidae) is described and figured for the first time. An identification key to Malukandra is provided.

Resumo. A fêmea de Malukandra heterostyla (Lameere, 1902) (Coleoptera: Cerambycidae) é descrita e figurada pela primeira vez. É fornecida uma chave de identificação para Malukandra.

The Genus Chimarra Stephens (Trichoptera: Philopotamidae) In Vietnam, Roger J. Blahnik, Tatiana I. Arefina-Armitage, Brian J. Armitage

Insecta Mundi

Currently, the genus Chimarra Stephens (Trichoptera: Philopotamidae) is represented in the Oriental Region by 259 species. Of these, 61 species have been described or recorded from Vietnam. In this paper, 9 new species from Vietnam are described and illustrated (Chimarra aculeata, C. carinata, C. corneola, C. insolita, C. mina, C. prominens, C. rostrata, C. undulata, and C. ungula). In addition, 3 new country records are noted (Chimarra areli Malicky and Mey, Chimarra pipake Malicky and Chantaramongkol, and Chimarra suthepensis Chantaramongkol and Malicky), and 1 new species group (minuta Group) …

Description Of A New Species Of Paranthaclisis Banks From Florida (Neuroptera: Myrmeleontidae), Lionel A. Stange, Robert B. Miller

Insecta Mundi

A new species of Paranthaclisis Banks, P. floridensis (Neuroptera: Myrmeleontidae), is described from Florida and compared to the other described species in the genus. Keys to the adults and larvae are provided.

Resumen. Se describe una nueva especie de Paranthaclisis Banks, P. floridensis (Neuroptera: Myrmeleontidae), de Florida y se la incluye en una clave para las otras especies descriptas del género. Se da una descripción del adulto y de la larva.

New Species, Records, And A Synonymy Of African Sisyridae (Neuroptera), Oliver S. Flint Jr

Insecta Mundi

Two species of the genus Sisyra Burmeister (Neuroptera: Sisyridae), S. cameroonensis, n. sp., and S. gruwelli, n. sp., are described from the African Republic of Cameroon. Sisyra pallida Meinander is synonymized with Sisyra delicata Smithers, new synonymy, after comparison of the types of the former with topotypic paratypes of the latter. Type material of Sisyra nilotica Tjeder appears to be lost. Examples of Sisyra are recorded from Nigeria, Ethiopia and Uganda. A second species of the endemic African genus, Sisyborina, Monserrat, S. scitula, n. sp., is described from Cameroon, Guinea, and Zambia.

A New Species Of Stenorrhachus Mclachlan From Chile (Neuroptera: Nemopteridae) With Biological Notes, Robert B. Miller, Lionel A. Stange

Insecta Mundi

A new species of Stenorrhachus (McLachlan), S. chilensis (Neuroptera: Nemopteridae), is described from Chile with biological observations of Stenorrhachus walkeri (McLachlan). A key to the two species is provided as well as diagnoses of the adults and of the larva of Stenorrhachus walkeri.

Resumen: Se describe una especie nueva de Stenorrhachus (McLachlan), S. chilensis (Neuroptera: Nemopteridae), de Chile con notas biológicas sobre Stenorrhachus walkeri (McLachlan). Se da una clave para las dos especies además descripciones de los adultos y de la larva de S. walkeri.

Systematic Revision Of Gonaphodiellus Taxa, With Description Of Two New Genera And Fourteen New Species (Coleoptera: Scarabaeidae: Aphodiinae), Marco Dellacasa, Giovanni Dellacasa, Robert D. Gordon

Insecta Mundi

The American species belonging to the genus Gonaphodiellus Schmidt (Coleoptera: Scarabaeidae: Aphodiinae) are redescribed and figured. Two new genera are described: Gonaphodioides and Gonaphodiopsis. Fourteen new species are described: Gonaphodiellus arcanus, G. cerropuntanus, G. manantlanicus, G. martinpierai, G. omiltemicus, G. sacatepequezis, Gonaphodioides newtoni, G. ratcliffei, G. skelleyi, Gonaphodiopsis deloyai, G. hypogea, G. montesdeocai, G. pachecoi, G. teopiscaensis. The lectotype of Aphodius columbicus (Harold, 1880) is designated. The following new combinations are proposed: Gonaphodiellus nigrinus (Schmidt, 1916), Gonaphodioides acutecernans (Balthasar, 1960), Gonaphodioides chapini (Hinton, 1934), Gonaphodioides …

Two New Species Of The Genus Pahamunaya Schmid (Trichoptera: Polycentropodidae) From Vietnam, Tatiana I. Arefina-Armitage, Brian J. Armitage

Insecta Mundi

Two new species of the genus Pahamunaya Schmid (Trichoptera: Polycentropodidae), P. talon sp. n. and P. spinifera sp. n., from Vietnam are described and illustrated. Examination of the holotype male of P. khoii Oláh and Johanson, in combination with an additional specimen of the same species, revealed new characters. New illustrations for this species are provided.