TY - JOUR
T1 - Lack of phenotypic variation despite population structure in larval utilization of pea aphids by populations of the lady beetle Hippodamia convergens
AU - Grenier, Christy
AU - Summerhays, Bryce
AU - Cartmill, Ryan
AU - Martinez, Tanairi
AU - Saisho, Roxane
AU - Rothenberg, Alexander
AU - Tovar, Alicia
AU - Rynerson, Andrew
AU - Scott, Jerrika
AU - Obrycki, John J.
AU - Sethuraman, Arun
N1 - Publisher Copyright:
© 2020 The Author(s)
PY - 2021/4
Y1 - 2021/4
N2 - The convergent lady beetle (Hippodamia convergens) is a generalist natural enemy that is utilized extensively in augmentative biological control across the United States. Recent studies have pointed to both genetic and phenotypic differences in Western (California) versus Eastern (Kansas) populations of the species. Here we investigate (1) genetic population structure, and (2) phenotypic differences in the utilization of pea aphids at temperatures that resemble the Western United States in (a) Eastern versus Western populations, (b) F1 Eastern X Western hybrids versus their progenitor populations, and investigate the effects of competition between (c) Eastern and Western populations. We found no differences in final pupal weight, or the net weight gain ratio through larval development from the third instar to pupal stage, despite genetic population structure. Our study points towards plastic response and effectiveness in feeding phenotypes of Eastern and Western populations of H. convergens, and the absence of hybrid vigor and heterozygote advantages in hybrids.
AB - The convergent lady beetle (Hippodamia convergens) is a generalist natural enemy that is utilized extensively in augmentative biological control across the United States. Recent studies have pointed to both genetic and phenotypic differences in Western (California) versus Eastern (Kansas) populations of the species. Here we investigate (1) genetic population structure, and (2) phenotypic differences in the utilization of pea aphids at temperatures that resemble the Western United States in (a) Eastern versus Western populations, (b) F1 Eastern X Western hybrids versus their progenitor populations, and investigate the effects of competition between (c) Eastern and Western populations. We found no differences in final pupal weight, or the net weight gain ratio through larval development from the third instar to pupal stage, despite genetic population structure. Our study points towards plastic response and effectiveness in feeding phenotypes of Eastern and Western populations of H. convergens, and the absence of hybrid vigor and heterozygote advantages in hybrids.
KW - Augmentative biological control
KW - Phenotypic plasticity
KW - Population structure
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U2 - 10.1016/j.biocontrol.2020.104507
DO - 10.1016/j.biocontrol.2020.104507
M3 - Article
AN - SCOPUS:85098727878
SN - 1049-9644
VL - 155
JO - Biological Control
JF - Biological Control
M1 - 104507
ER -