Population genetics of winter moth: Hybridization between non-native winter moth and native Bruce spanworm

2016 ◽  
Author(s):  
Nathan Havill
Keyword(s):  
Population Genetics ◽  
Winter Moth ◽  
Bruce Spanworm

WING COLOURATION DIFFERENCE BETWEEN THE BRUCE SPANWORM OPEROPHTERA BRUCEATA (HULST) (LEPIDOPTERA: GEOMETRIDAE) AND THE WINTER MOTH OPEROPHTERA BRUMATA (L.) ON VANCOUVER ISLAND

1988 ◽  
Vol 120 (7) ◽  
pp. 697-698 ◽  
Author(s):  
Kenneth A. Pivnick
Keyword(s):  
West Coast ◽  
Vancouver Island ◽  
Costal Margin ◽  
Operophtera Brumata ◽  
The West ◽  
Separate Species ◽  
Winter Moth ◽  
Pheromone Trapping ◽  
Yellow Orange ◽  
Bruce Spanworm

In a recently completed study involving pheromone trapping of the winter moth, Operophtera brumata (L.), and the Bruce spanworm, O. bruceata (Hulst), on Vancouver Island (Pivnick et al. 1988), I noticed that O. bruceata had wing colouration different from sympatric O. brumata. The west coast O. bruceata has a pale yellow-orange costal margin on the underside of the forewings and this is faint to absent in O. brumata (Fig. 1). It is also absent from O. bruceata in Saskatoon, which is interesting because some authors consider the west coast population of O. bruceata to be a separate species: the western winter moth, O. occidentalis (see Ferguson 1978; Pivnick et al. 1988). Descriptions of O. bruceata (Brown 1962) and O. brumata (Cuming 1961), and a taxonomic key to these two species (Eidt et al. 1966), do not mention any distinctive wing markings that could be used to separate the two species.

scholarly journals Survey for Winter Moth (Lepidoptera: Geometridae) in Northeastern North America With Pheromone-Baited Traps and Hybridization With the Native Bruce Spanworm (Lepidoptera: Geometridae)

2010 ◽  
Vol 103 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Joseph S. Elkinton ◽  
George H. Boettner ◽  
Marinko Sremac ◽  
Rodger Gwiazdowski ◽  
Roy R. Hunkins ◽  
...  
Keyword(s):  
North America ◽  
Northeastern North America ◽  
Winter Moth ◽  
Baited Traps ◽  
Bruce Spanworm

DISTINGUISHING LARVAE AND PUPAE OF THE WINTER MOTH, OPEROPHTERA BRUMATA, AND THE BRUCE SPANWORM, O. BRUCEATA (LEPIDOPTERA: GEOMETRIDAE)

1968 ◽  
Vol 100 (5) ◽  
pp. 536-539 ◽  
Author(s):  
D. C. Eidt ◽  
D. G. Embree
Keyword(s):  
Operophtera Brumata ◽  
Winter Moth ◽  
Bruce Spanworm

AbstractLarvae of the winter moth, Operophtera brumata (L.), and the Bruce spanworm, O. bruceata (Hulst), differ in the number of instars, in habits, and slightly in morphology. Populations may be distinguished readily by these criteria, but individual larvae sometimes give difficulty. The form of the pupal cremaster is distinctly different.

scholarly journals Real-time geographic settling of a hybrid zone between the invasive winter moth (Operophtera brumata L.) and the native Bruce spanworm (O. bruceata Hulst)

2021 ◽  
Author(s):  
Jeremy Andersen ◽  
Nathan Havill ◽  
George Boettner ◽  
Jennifer Chandler ◽  
Adalgisa Caccone ◽  
...  
Keyword(s):  
Real Time ◽  
Hybrid Zone ◽  
Native Species ◽  
Hybrid Zones ◽  
Operophtera Brumata ◽  
Hybrid Fitness ◽  
Cold Temperatures ◽  
Winter Moth ◽  
The Stability ◽  
Bruce Spanworm

Hybridization plays an important and underappreciated role in shaping the evolutionary trajectories of species. Following the introduction of a non-native organism to a novel habitat, hybridization with a native congener may affect the probability of establishment of the introduced species. In most documented cases of hybridization between a native and a non-native species, a mosaic hybrid zone is formed, with hybridization occurring heterogeneously across the landscape. In contrast, most naturally occurring hybrid zones are clinal in structure. Here we report on a long-term microsatellite dataset that monitored hybridization between the invasive winter moth, Operophtera brumata (Lepidoptera: Geometridae), and the native Bruce spanworm, O. bruceata, over a 12-year period. Our results document one of the first examples of the real-time formation and geographic settling of a clinal hybrid zone. In addition, by comparing one transect in Massachusetts where extreme winter cold temperatures have been hypothesized to restrict the distribution of winter moth, and one in coastal Connecticut, where winter temperatures are moderated by Long Island Sound, we find that the location of the hybrid zone appears to be independent of environmental variables and maintained under a tension model wherein the stability of the hybrid zone is constrained by population density, reduced hybrid fitness, and low dispersal rates. Documenting the formation of a contemporary clinal hybrid zone may provide important insights into the factors that shaped other well-established hybrid zones.

Distinguishing Adults of the Winter Moth Operophtera brumata (L.), and Bruce Spanworm O. bruceata (Hulst) (Lepidoptera: Geometridae)

1966 ◽  
Vol 98 (3) ◽  
pp. 258-261 ◽  
Author(s):  
D. C. Eidt ◽  
D. G. Embree ◽  
C. C. Smith
Keyword(s):  
Male Genitalia ◽  
Operophtera Brumata ◽  
Winter Moth ◽  
Bruce Spanworm

AbstractThe winter moth, Operophtera brumata (L.), and the Bruce spanworm moth, O. bruceata (Hulst), may be readily distinguished by differences in the male genitalia and the length of the vestigial wings of the female.

Use of a sex attractant and an inhibitor for monitoring winter moth and bruce spanworm populations

1987 ◽  
Vol 13 (6) ◽  
pp. 1319-1330 ◽  
Author(s):  
E. W. Underhill ◽  
J. G. Millar ◽  
R. A. Ring ◽  
J. W. Wong ◽  
D. Barton ◽  
...  
Keyword(s):  
Sex Attractant ◽  
Winter Moth ◽  
Bruce Spanworm

Evaluation of Pheromone-Baited Traps for Winter Moth and Bruce Spanworm (Lepidoptera: Geometridae)

2011 ◽  
Vol 104 (2) ◽  
pp. 494-500 ◽  
Author(s):  
Joseph S. Elkinton ◽  
David Lance ◽  
George Boettner ◽  
Ashot Khrimian ◽  
Natalie Leva
Keyword(s):  
Winter Moth ◽  
Baited Traps ◽  
Bruce Spanworm

Asymmetric hybridization between non-native winter moth, Operophtera brumata (Lepidoptera: Geometridae), and native Bruce spanworm, Operophtera bruceata, in the Northeastern United States, assessed with novel microsatellites and SNPs

2016 ◽  
Vol 107 (2) ◽  
pp. 241-250 ◽  
Author(s):  
N.P. Havill ◽  
J. Elkinton ◽  
J.C. Andersen ◽  
S.B. Hagen ◽  
Hannah J. Broadley ◽  
...  
Keyword(s):  
Microsatellite Loci ◽  
Native Species ◽  
Sex Chromosome ◽  
F1 Hybrids ◽  
Nucleotide Polymorphisms ◽  
Operophtera Brumata ◽  
Genetic Incompatibility ◽  
Moth Population ◽  
Winter Moth ◽  
Bruce Spanworm

AbstractThe European winter moth, Operophtera brumata, is a non-native pest in the Northeastern USA causing defoliation of forest trees and crops such as apples and blueberries. This species is known to hybridize with O. bruceata, the Bruce spanworm, a native species across North America, although it is not known if there are hybrid generations beyond F1. To study winter moth population genetics and hybridization with Bruce spanworm, we developed two sets of genetic markers, single nucleotide polymorphisms (SNPs) and microsatellites, using genomic approaches. Both types of markers were validated using samples from the two species and their hybrids. We identified 1216 SNPs and 24 variable microsatellite loci. From them we developed a subset of 95 species-diagnostic SNPs and ten microsatellite loci that could be used for hybrid identification. We further validated the ten microsatellite loci by screening field collected samples of both species and putative hybrids. In addition to confirming the presence of F1 hybrids reported in previous studies, we found evidence for multi-generation asymmetric hybridization, as suggested by the occurrence of hybrid backcrosses with the winter month, but not with the Bruce spanworm. Laboratory crosses between winter moth females and Bruce spanworm males resulted in a higher proportion of viable eggs than the reciprocal cross, supporting this pattern. We discuss the possible roles of population demographics, sex chromosome genetic incompatibility, and bacterial symbionts as causes of this asymmetrical hybridization and the utility of the developed markers for future studies.

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