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Neodiprion lecontei

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https://www.readbyqxmd.com/read/27381325/complementary-sex-determination-inbreeding-depression-and-inbreeding-avoidance-in-a-gregarious-sawfly
#1
K E Harper, R K Bagley, K L Thompson, C R Linnen
Although most Hymenoptera reproduce via arrhenotokous haplodiploidy, the underlying genetic mechanisms vary. Of these, the most widespread mechanism appears to be single-locus complementary sex determination (sl-CSD), in which individuals that are diploid and heterozygous at a sex-determining locus are female, and individuals that are homozygous or hemizygous are male. Because inbreeding increases the probability of producing diploid males, which are often sterile or inviable, sl-CSD can generate substantial inbreeding depression...
July 6, 2016: Heredity
https://www.readbyqxmd.com/read/24420831/field-and-electroantennogram-responses-of-the-red-headed-pine-sawfly-neodiprion-lecontei-fitch-to-optical-isomers-of-sawfly-sex-pheromones
#2
M E Kraemer, H C Coppel, F Matsumura, R C Wilkinson, T Kikukawa
Sawfly sex pheromones, the acetate and propionate esters of 3,7-dimethylpentadecan-2-ol, were field tested for activity towardNeodiprion lecontei (Fitch). Only the acetate form of the 2S,3S,7S isomer was active. Field catch decreased with the addition of the 2S,3R,7(R/S) acetate isomer sample. Electroantennogram recordings showed a positive correlation between response and degree to which the chirality of each isomer resembled the attractive isomer.
November 1981: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/24318850/the-chemical-feeding-ecology-ofneodiprion-dubiosus-schedl-n-rugifrons-midd-andn-lecontei-fitch-on-jack-pine-pinus-banksiana-lamb
#3
B A Schuh, D M Benjamin
Two monophagous sawflies,Neodiprion dubiosus andN. rugifrons, actively avoid feeding on the current season's needles of jack pine,Pinus banksiana, while the polyphagousN. lecontei feeds indiscriminately on foliage of all age classes. Bioassay studies with needle extracts indicate thatN. dubiosus andN. rugifrons larval feeding preference is governed by a group of tricyclic diterpene resin acids. Resin acids commonly occur in needles of all ages; however, levopimaric, palustric, dehydroabietic, and neoabietic acids were at higher concentrations in the new needles...
July 1984: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/19085330/comparison-of-methods-for-species-tree-inference-in-the-sawfly-genus-neodiprion-hymenoptera-diprionidae
#4
Catherine R Linnen, Brian D Farrell
Conifer-feeding sawflies in the genus Neodiprion provide an excellent opportunity to investigate the origin and maintenance of barriers to reproduction, but obtaining a phylogenetic estimate for comparative studies of Neodiprion speciation has proved difficult. Specifically, nonmonophyly within and discordance between individual gene trees, both of which are common in groups that diverged recently and/or rapidly, make it impossible to infer a species tree using methods that are designed to estimate gene trees...
December 2008: Systematic Biology
https://www.readbyqxmd.com/read/18456519/phylogenetic-analysis-of-nuclear-and-mitochondrial-genes-reveals-evolutionary-relationships-and-mitochondrial-introgression-in-the-sertifer-species-group-of-the-genus-neodiprion-hymenoptera-diprionidae
#5
Catherine R Linnen, Brian D Farrell
Neodiprion Rohwer (Hymenoptera: Diprionidae) is a Holarctic genus of conifer-feeding sawflies with a remarkable amount of inter- and intraspecific diversity in host use, behavior, and development. This variation is thought to play a central role in Neodiprion diversification, but speciation hypotheses remain untested due to a lack of a robust phylogenetic estimate. Here, we utilize sequence data from three nuclear genes (CAD, ANL43, EF1alpha) to obtain a phylogenetic estimate for the genus. These analyses suggest that: (1) North American and Eurasian Neodiprion are monophyletic sister clades, (2) the sertifer group is paraphyletic with respect to the monophyletic lecontei group, and (3) on at least two occasions, dispersal from eastern to western North America proceeded via southern host bridges...
July 2008: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/17542850/mitonuclear-discordance-is-caused-by-rampant-mitochondrial-introgression-in-neodiprion-hymenoptera-diprionidae-sawflies
#6
Catherine R Linnen, Brian D Farrell
We investigate the pervasiveness of hybridization and mitochondrial introgression in Neodiprion Rohwer (Hymenoptera; Diprionidae), a Holarctic genus of conifer-feeding sawflies. A phylogenetic analysis of the lecontei species group revealed extensive discordance between a contiguous mitochondrial region spanning three genes (COI, tRNA-leucine, and COII) and three nuclear loci (EF1alpha, CAD, and an anonymous nuclear locus). Bayesian tests of monophyly and Shimodaira-Hasegawa (SH) tests of topological congruence were consistent with mitochondrial introgression; however, these patterns could also be explained by lineage sorting (i...
June 2007: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/16809301/sequence-analysis-and-organization-of-the-neodiprion-abietis-nucleopolyhedrovirus-genome
#7
COMPARATIVE STUDY
Simon P Duffy, Aaron M Young, Benoit Morin, Christopher J Lucarotti, Ben F Koop, David B Levin
Of 30 baculovirus genomes that have been sequenced to date, the only nonlepidopteran baculoviruses include the dipteran Culex nigripalpus nucleopolyhedrovirus and two hymenopteran nucleopolyhedroviruses that infect the sawflies Neodiprion lecontei (NeleNPV) and Neodiprion sertifer (NeseNPV). This study provides a complete sequence and genome analysis of the nucleopolyhedrovirus that infects the balsam fir sawfly Neodiprion abietis (Hymenoptera, Symphyta, Diprionidae). The N. abietis nucleopolyhedrovirus (NeabNPV) is 84,264 bp in size, with a G+C content of 33...
July 2006: Journal of Virology
https://www.readbyqxmd.com/read/16690912/genomic-comparison-of-neodiprion-sertifer-and-neodiprion-lecontei-nucleopolyhedroviruses-and-identification-of-potential-hymenopteran-baculovirus-specific-open-reading-frames
#8
COMPARATIVE STUDY
Hilary A M Lauzon, Alejandra Garcia-Maruniak, Paolo M de A Zanotto, José C Clemente, Elisabeth A Herniou, Christopher J Lucarotti, Basil M Arif, James E Maruniak
Genomic comparison of Neodiprion sertifer nucleopolyhedrovirus (NeseNPV) and Neodiprion lecontei nucleopolyhedrovirus (NeleNPV) showed that the hymenopteran baculoviruses had features in common and were distinct from other, fully sequenced lepidopteran and dipteran baculoviruses. Their genomes were small in size (86,462 and 81,755 bp, respectively), had low G+C contents (33.8 and 33.3 mol%, respectively) and contained fewer open reading frames (ORFs) (90 and 89, respectively) than other baculoviruses. They shared 69 ORFs (48...
June 2006: Journal of General Virology
https://www.readbyqxmd.com/read/15194779/sequence-and-organization-of-the-neodiprion-lecontei-nucleopolyhedrovirus-genome
#9
Hilary A M Lauzon, Christopher J Lucarotti, Peter J Krell, Qili Feng, Arthur Retnakaran, Basil M Arif
All fully sequenced baculovirus genomes, with the exception of the dipteran Culex nigripalpus nucleopolyhedrovirus (CuniNPV), have previously been from Lepidoptera. This study reports the sequencing and characterization of a hymenopteran baculovirus, Neodiprion lecontei nucleopolyhedrovirus (NeleNPV), from the redheaded pine sawfly. NeleNPV has the smallest genome so far published (81,755 bp) and has a GC content of only 33.3%. It contains 89 potential open reading frames, 43 with baculovirus homologues, 6 identified by conserved domains, and 1 with homology to a densovirus structural protein...
July 2004: Journal of Virology
https://www.readbyqxmd.com/read/7026655/effects-of-red-headed-in-sawfly-neodiprion-lecontei-nuclear-polyhedrosis-virus-on-rainbow-trout-salmo-gairdneri-and-daphnia-pulex
#10
B D Hicks, J R Geraci, J C Cunningham, B M Arif
The effects of a nuclear polyhedrosis virus (NPV) of the red-headed pine sawfly, Neodiprion lecontei, on rainbow trout, Salmo gairdneri, were investigated. The fish were exposed to this virus by intubation and topical application and no ill-effects were observed. Similarly, no ill-effects were detected in Daphnia pulex when the same NPV was added to their culture medium. The materials were lyophilized, NPV-infected sawfly larvae (normally used for insect control), lyophilized, uninfected larvae and purified, polyhedral inclusion bodies...
1981: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/1257754/sex-pheromone-specificity-in-the-pine-sawflies-interchange-of-acid-moieties-in-an-ester
#11
COMPARATIVE STUDY
D M Jewett, F Matsumura, H C Coppel
3,7-Dimethylpentadecan-2-ol was identified as the free alcohol in three species from two genera of pine sawflies (Hymenoptera: Diprionidae). In Neodiprion lecontei and Neodiprion sertifer the acetate of this alcohol is the major component of their sex attractant; in Diprion similis it is the propionate. By examining the responses of the male antennae of several species of Neodiprion through the electroantennographic technique, it was determined that four species responded to the acetate and six to the propionate...
April 2, 1976: Science
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