TY - JOUR
T1 - Dispersion patterns and sample size estimates for egg masses of spotted lanternfly (Hemiptera: Fulgoridae)
AU - Keller, J.
AU - Rost, J.
AU - Hoover, K.
AU - Urban, J.
AU - Leach, H.
AU - Porras, M.
AU - Walsh, B.
AU - Bosold, M.
AU - Calvin, D.
N1 - Funding Information:
This work was funded by Pennsylvania Department of Agriculture Resource Center Funding agreement #44198831. This work was also supported by the USDA National Institute of Food and Agriculture Appropriations under Project #PEN04275 and Accession #123456789. We are appreciative of the growers and homeowner's that allowed us access to their land and resources. Special thanks to the Villages of Spring Ridge H.O.A; Sycamore, Hickory, Laurel, and Hawthorne North for allowing access to their neighborhood to monitor spring and fall egg mass deposition. We also extended our thanks to Mark Walther for the use of trees on his property for egg mass surveys.
Publisher Copyright:
© The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - The spotted lanternfly, Lycorma delicatula (White), is a new invasive pest in the United States. To quantify spotted lanternfly population abundance, one must understand this pest's dispersion pattern, that is, the spatial arrangement of individuals within a population. Spotted lanternflies overwinter in egg masses from late fall to May, making this life stage suitable for population assessments. We measured the dispersion pattern of egg masses at two types of sites: a suburban housing development, where we used individual trees as the sampling unit, and rural woodlots, where we used individual trees and also plots with 5.64 m radius as sampling units. Plots were the same size as those recommended for monitoring the gypsy moth, a well-studied pest with similar egg laying habit to the spotted lanternfly. Egg masses in both sampling units were counted up to a height of 3 m. With trees as the sampling unit, egg masses were aggregated in 12 of 20 rural sampling universes, randomly dispersed at 6, and completely absent at 2. Similar patterns were seen when using the 5.64-m radius rural sampling units and for suburban sampling universes. We calculated sample size requirements for a range of mean densities at a precision of 25 and 30%. Additionally, the vertical distribution of egg masses was characterized on the invasive tree of heaven [Ailanthus altissima (Mill.) Swingle], a preferred host for spotted lanternflies. For small trees, there was a positive relationship between number of egg masses in the bottom 3 m of the tree and the total count.
AB - The spotted lanternfly, Lycorma delicatula (White), is a new invasive pest in the United States. To quantify spotted lanternfly population abundance, one must understand this pest's dispersion pattern, that is, the spatial arrangement of individuals within a population. Spotted lanternflies overwinter in egg masses from late fall to May, making this life stage suitable for population assessments. We measured the dispersion pattern of egg masses at two types of sites: a suburban housing development, where we used individual trees as the sampling unit, and rural woodlots, where we used individual trees and also plots with 5.64 m radius as sampling units. Plots were the same size as those recommended for monitoring the gypsy moth, a well-studied pest with similar egg laying habit to the spotted lanternfly. Egg masses in both sampling units were counted up to a height of 3 m. With trees as the sampling unit, egg masses were aggregated in 12 of 20 rural sampling universes, randomly dispersed at 6, and completely absent at 2. Similar patterns were seen when using the 5.64-m radius rural sampling units and for suburban sampling universes. We calculated sample size requirements for a range of mean densities at a precision of 25 and 30%. Additionally, the vertical distribution of egg masses was characterized on the invasive tree of heaven [Ailanthus altissima (Mill.) Swingle], a preferred host for spotted lanternflies. For small trees, there was a positive relationship between number of egg masses in the bottom 3 m of the tree and the total count.
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U2 - 10.1093/ee/nvaa107
DO - 10.1093/ee/nvaa107
M3 - Article
C2 - 33315076
AN - SCOPUS:85098531490
SN - 0046-225X
VL - 49
SP - 1462
EP - 1472
JO - Environmental entomology
JF - Environmental entomology
IS - 6
ER -