scholarly journals History, geography and host use shape genomewide patterns of genetic variation in the redheaded pine sawfly (Neodiprion lecontei)

2017 ◽  
Vol 26 (4) ◽  
pp. 1022-1044 ◽  
Author(s):  
Robin K. Bagley ◽  
Vitor C. Sousa ◽  
Matthew L. Niemiller ◽  
Catherine R. Linnen
Keyword(s):  
Genetic Variation ◽  
Host Use ◽  
Pine Sawfly ◽  
Neodiprion Lecontei

scholarly journals Ecological correlates of gene family size: the draft genome of the redheaded pine sawfly Neodiprion lecontei

2021 ◽  
Author(s):  
Kim Vertacnik ◽  
Danielle Herrig ◽  
R Keating Godfrey ◽  
Tom Hill ◽  
Scott Geib ◽  
...  
Keyword(s):  
Gene Family ◽  
Family Size ◽  
Draft Genome ◽  
Gene Families ◽  
Gene Family Evolution ◽  
Gene Gain ◽  
Ecological Specialization ◽  
Dietary Specialization ◽  
Pine Sawfly ◽  
Neodiprion Lecontei

A central goal in evolutionary biology is to determine the predictability of adaptive genetic changes. Despite many documented cases of convergent evolution at individual loci, little is known about the repeatability of gene family expansions and contractions. To address this void, we examined gene family evolution in the redheaded pine sawfly Neodiprion lecontei, a non-eusocial hymenopteran and exemplar of a pine-specialized lineage evolved from angiosperm-feeding ancestors. After assembling and annotating a draft genome, we manually annotated multiple gene families with chemosensory, detoxification, or immunity functions and characterized their genomic distributions and evolutionary history. Our results suggest that expansions of bitter gustatory receptor (GR), clan 3 cytochrome P450 (CYP3), and antimicrobial peptide (AMP) subfamilies may have contributed to pine adaptation. By contrast, there was no evidence of recent gene family contraction via pseudogenization. Next, we compared the number of genes in these same families across insect taxa that vary in diet, dietary specialization, and social behavior. In Hymenoptera, herbivory was associated with large GR and small olfactory receptor (OR) families, eusociality was associated with large OR and small AMP families, and--unlike investigations among more closely related taxa--ecological specialization was not related to gene family size. Overall, our results suggest that gene families that mediate ecological interactions may expand and contract predictably in response to particular selection pressures, however, the ecological drivers and temporal pace of gene gain and loss likely varies considerably across gene families.

ChemInform Abstract: NEW SYNTHESIS OF 3,7-DIMETHYLPENTADEC-2-YL ACETATE SEX PHEROMONE OF THE PINE SAWFLY NEODIPRION LECONTEI

1978 ◽  
Vol 9 (30) ◽  
Author(s):  
P. PLACE ◽  
M. L. ROUMESTANT ◽  
J. GORE
Keyword(s):  
Sex Pheromone ◽  
Pine Sawfly ◽  
Neodiprion Lecontei ◽  
New Synthesis

The evolution of novel host use is unlikely to be constrained by trade-offs or a lack of genetic variation

2015 ◽  
Vol 24 (11) ◽  
pp. 2777-2793 ◽  
Author(s):  
Zachariah Gompert ◽  
Joshua P. Jahner ◽  
Cynthia F. Scholl ◽  
Joseph S. Wilson ◽  
Lauren K. Lucas ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Host Use ◽  
Trade Offs ◽  
Novel Host

Notes on Leconte's Sawfly

1952 ◽  
Vol 84 (2) ◽  
pp. 59-61
Author(s):  
A. S. West
Keyword(s):  
Life History ◽  
Pinus Banksiana ◽  
Pinus Resinosa ◽  
Jack Pine ◽  
Red Pine ◽  
Pine Needles ◽  
Pine Sawfly ◽  
Neodiprion Lecontei ◽  
Significant Damage

Leconte's sawfly or the red-headed pine sawfly (Neodiprion lecontei Fitch) is a common insect attacking pines in Ontario. Plantations red pine are almost invariably attacked from the time the trees have reached two to four feet in height. Periodically epidemic populations cause significant damage. The life history and habits of the species have heen described by Middleton (2) who states that this insect attacks practically all species of pine as bell as larch. Schaffner (3) also indicates that the larvae feed on a wide variety of pine and occasionally on other conifers. Red pine (Pinus resinosa Ait.) is undoubtedly the usual host, although in Ontario jack pine (Pinus banksiana Lamb.) is sometimes attacked. In 1946 evidence was secured to show that jack pine needles may be selected for oviposition even in an area where red pine foliage is plentiful. (Figure 1).

scholarly journals Genetic basis of body color and spotting pattern in redheaded pine sawfly larvae (Neodiprion lecontei)

2017 ◽  
Author(s):  
Catherine R. Linnen ◽  
Claire T. O’Quin ◽  
Taylor Shackleford ◽  
Connor R. Sears ◽  
Carita Lindstedt
Keyword(s):  
Genetic Basis ◽  
Developmental Stages ◽  
Color Variation ◽  
Body Color ◽  
Sawfly Larvae ◽  
Pine Sawfly ◽  
Neodiprion Lecontei ◽  
Yellow Body ◽  
In The Wild ◽  
Trait Locus

ABSTRACTPigmentation has emerged as a premier model for understanding the genetic basis of phenotypic evolution, and a growing catalog of color loci is starting to reveal biases in the mutations, genes, and genetic architectures underlying color variation in the wild. However, existing studies have sampled a limited subset of taxa, color traits, and developmental stages. To expand our sample of color loci, we performed quantitative trait locus (QTL) mapping analyses on two types of larval pigmentation traits that vary among populations of the redheaded pine sawfly (Neodiprion lecontei): carotenoid-based yellow body color and melanin-based spotting pattern. For both traits, our QTL models explained a substantial proportion of phenotypic variation and suggested a genetic architecture that is neither monogenic nor highly polygenic. Additionally, we used our linkage map to anchor the current N. lecontei genome assembly. With these data, we identified promising candidate genes underlying: (1) a loss of yellow pigmentation in Mid-Atlantic/northeastern populations (Cameo2 and apoLTP-II/I), and (2) a pronounced reduction in black spotting in Great-Lakes populations (yellow, TH, Dat). Several of these genes also contribute to color variation in other wild and domesticated taxa. Overall, our findings are consistent with the hypothesis that predictable genes of large-effect contribute to color evolution in nature.

scholarly journals Genetic Basis of Body Color and Spotting Pattern in Redheaded Pine Sawfly Larvae (Neodiprion lecontei)

Genetics ◽  
2018 ◽  
Vol 209 (1) ◽  
pp. 291-305 ◽  
Author(s):  
Catherine R. Linnen ◽  
Claire T. O’Quin ◽  
Taylor Shackleford ◽  
Connor R. Sears ◽  
Carita Lindstedt
Keyword(s):  
Genetic Basis ◽  
Body Color ◽  
Sawfly Larvae ◽  
Pine Sawfly ◽  
Neodiprion Lecontei

Oviposition of the Red-Headed Pine Sawfly, Neodiprion lecontei (Fitch)

1960 ◽  
Vol 92 (6) ◽  
pp. 430-435 ◽  
Author(s):  
K. J. Griffiths
Keyword(s):  
Pinus Banksiana ◽  
Jack Pine ◽  
Oviposition Behaviour ◽  
Pine Sawfly ◽  
Important Group ◽  
Neodiprion Lecontei ◽  
Cast Doubt ◽  
The Subject ◽  
European Pine Sawfly

The oviposition behaviour of Neodiprion sawflies has been the subject of much investigation in recent years. The impetus for this interest seems to lie in the paper by Atwood and Peck (1943), in which it was suggested that the number and spacing of eggs on needles were a useful tool for the identification of memhers of this important group of conifer defoliators. Ghent (1955) has analysed the egg clusters of N. pratti banksianae Roh., and Ghent and Wallace (1958) have investigated the behaviour responsible for the pairing of eggs on adjacent jack pine (Pinus banksiana Lamb. ) needles by N. swainei Midd. More recently, Ghent (1959) has presented a study of the factors determining the spacing of eggs by the European pine sawfly, N. sertifer (Geoff.). Of these, the 1955 and 1959 papers, in addition to making valuable contributions to our understanding of the behaviour of adults, cast doubt on the usefulness of the number and spacing of eggs as identifying characters in these species.

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