Maya Evenden | University of Alberta (original) (raw)

Papers by Maya Evenden

Research paper thumbnail of Nutrition, sex and season contribute to variation in fat and glycerol levels in the long-lived mothCaloptilia fraxinella

Physiological Entomology, Jan 12, 2016

The ash leaf cone roller Caloptilia fraxinella Ely (Lepidoptera: Gracillariidae) is an invasive l... more The ash leaf cone roller Caloptilia fraxinella Ely (Lepidoptera: Gracillariidae) is an invasive leaf‐mining moth pest of horticultural ash Fraxinus spp. in the Canadian Prairie Provinces. Caloptilia fraxinella overwinter as adults in reproductive diapause and mating occurs after overwintering in the spring. The effect of a carbohydrate food source on fat and glycerol reserves throughout the long adult life stage of this moth is investigated. Insects collected as pupae are given access to either water or sugar water upon adult eclosion. Moths held under the different feeding regimes are sampled before (summer and autumn) and after overwintering in the spring. Analysis of either glycerol or lipid content is conducted for male and female moths from each collection period. Both moth weight and glycerol concentration are affected by moth sex, food regime and season of collection. Although female moths are heavier than males, a higher glycerol concentration occurs in males. Moths fed sugar are heavier and have a higher glycerol concentration than water‐fed moths late in reproductive diapause and after overwintering. Moths collected in the spring after overwintering are lighter and have a lower glycerol content than moths collected before winter. There is a significant influence of feeding regime and season on moth body lipid content, with sugar‐fed moths having more fat than water‐fed moths; however, this difference is smaller in the summer than the autumn or spring. An initial understanding of the overwintering biology and diapause of this pest is provided in the present study.

Research paper thumbnail of Host Plant Volatile Lures Attract Apanteles polychrosidis (Hymenoptera: Braconidae) to Ash Trees Infested With Caloptilia fraxinella (Lepidoptera: Gracillariidae)

Frontiers in Ecology and Evolution, Jul 9, 2021

Research paper thumbnail of Effect of Environmental Conditions on Flight Capacity in Mountain Pine Beetle (Coleoptera: Curculionidae: Scolytinae)

Journal of Insect Behavior, Nov 19, 2020

Research paper thumbnail of The roles of juvenile hormone and biogenic amines on pheromone response plasticity and diapause termination in maleCaloptilia fraxinella

Entomologia Experimentalis Et Applicata, Jan 11, 2016

Research paper thumbnail of Efficacy and Mechanisms of Communication Disruption of the Red Clover Casebearer Moth (Coleophora deauratella) with Complete and Partial Pheromone Formulations

Journal of Chemical Ecology, Jun 1, 2014

Research paper thumbnail of Genetic diversity and population structure identify the potential source of the invasive red clover casebearer moth, Coleophora deauratella, in North America

Biological Invasions, Aug 8, 2016

Research paper thumbnail of Environmental conditions terminate reproductive diapause and influence pheromone perception in the long-lived moth<i>Caloptilia fraxinella</i>

Physiological Entomology, Jan 19, 2015

Research paper thumbnail of The effect of flight on reproduction in an outbreaking forest lepidopteran

Physiological Entomology, Apr 27, 2012

Research paper thumbnail of Development of a Combined Sex Pheromone-based Monitoring System for<i>Malacosoma disstria</i>(Lepidoptera: Lasoicampidae) and<i>Choristoneura conflictana</i>(Lepidoptera: Tortricidae)

Environmental Entomology, Apr 1, 2009

Research paper thumbnail of Effects of nutrition and methoprene treatment upon reproductive diapause in Caloptilia fraxinella (Lepidoptera: Gracillariidae)

Physiological Entomology, Sep 1, 2007

Research paper thumbnail of Development of a pheromone-based detection and monitoring technique for the western hemlock looper, Lambdina fiscellaria lugubrosa (Hulst) (Lepidoptera: Geometridae)

Research paper thumbnail of Influence of crop variety and fertilization on oviposition preference and larval performance of a generalist herbivore, the true armyworm, Mythimna unipuncta

Entomologia Experimentalis Et Applicata, Mar 1, 2020

Research paper thumbnail of Size and protein content of accessory glands in adult male<i>Caloptilia fraxinella</i>in different physiological states

Physiological Entomology, Jan 11, 2016

Research paper thumbnail of Small-plot studies comparing pheromone and juice baits for mass-trapping invasive<i>Synanthedon myopaeformis</i>in Canada

Entomologia Experimentalis Et Applicata, Sep 5, 2012

Research paper thumbnail of Semiochemical-Based Management of the Pea Leaf Weevil (Coleoptera: Curculionidae)

Annals of The Entomological Society of America, Jul 1, 2018

Abstract The pea leaf weevil, Sitona lineatus L. (Coleoptera: Curculionidae), is an important pes... more Abstract The pea leaf weevil, Sitona lineatus L. (Coleoptera: Curculionidae), is an important pest of pulse crops around the world. Adult pea leaf weevils rely on intra- and interspecific chemical cues to orient within their environment for the purposes of finding food and mates. Early research to identify semiochemical cues used by pea leaf weevils has permitted the development of semiochemical-baited traps that can reliably detect local movements and geographic range expansion of this species even at low population densities. More research is required to realize the potential of semiochemical-based management of the pea leaf weevil.The goals of this review are to: 1) introduce the chemical ecology of the pea leaf weevil and other Sitona species; 2) review the research conducted on semiochemical-based management of the pea leaf weevil in different growing regions; and 3) evaluate important areas of future research in both basic and applied chemical ecology of this pest.

Research paper thumbnail of The costs of colour: plasticity of melanin pigmentation in an outbreaking polymorphic forest moth

Entomologia Experimentalis Et Applicata, Jan 28, 2015

Research paper thumbnail of Relationships among male<i>Coleophora deauratella</i>(Lepidoptera: Coleophoridae) pheromone-baited trap capture, larval abundance, damage and flight phenology

Agricultural and Forest Entomology, Feb 19, 2014

ABSTRACT The red clover casebearer Coleophora deauratella Leinig and Zeller is an invasive pest o... more ABSTRACT The red clover casebearer Coleophora deauratella Leinig and Zeller is an invasive pest of red clover (Trifolium pratense L.) grown for seed production in Canada. Drastic yield losses (80–99.5%) have been reported in several growing regions over the last 30 years as a result of larval feeding damage.Field trials conducted in red clover seed production fields in Alberta, Canada, during the summers of 2010–2012 tested the efficacy of pheromone-baited traps to predict population density and assess male flight phenology of C. deauratella.Male moth pheromone-trap capture was positively related to larval abundance and proportion seed damage at both moderate and high population densities.Phenological models based on degree days (DD11.7) were better at describing median (50%) male flight compared with ordinal date models. Median C. deauratella male flight occurs at 258.39 DD11.7, starting from 1 January each year in the Peace River region of Alberta.The results obtained in the present study demonstrate that pheromone-baited traps can be used to detect the spread of this invasive species. Future work could incorporate pheromone-based monitoring into assessment for the need and timing of control measures to target this invasive pest.

Research paper thumbnail of Plasticity of male response to sex pheromone depends on physiological state in a long-lived moth

Animal Behaviour, Feb 1, 2008

Research paper thumbnail of Initial Development of an Attracticide Formulation Against the Oriental Fruit Moth, <I>Grapholita molesta</I> (Lepidoptera: Tortricidae)

Environmental Entomology, Apr 1, 2004

Research paper thumbnail of Factors influencing flight potential of Choristoneura conflictana

Physiological Entomology, Dec 5, 2008

Factors affecting the flight potential of Choristoneura conflictana, an insect that undergoes cyc... more Factors affecting the flight potential of Choristoneura conflictana, an insect that undergoes cyclical changes in population density, are investigated using computer‐linked flight mills. Female and male moths are flown for a 12‐h period and the longest single flight and total flight distance of each moth is recorded. After flight bioassays, moths are subjected to lipid extraction with a soxhlet apparatus to determine the effect of body lipid content on flight. Larger C. conflictana moths fly farther than smaller moths. Female C. conflictana fly farther than male moths but the effects of both mating status and moth age on the distance flown are dependent on sex. Mated females fly farther than virgins and older females fly farther than young females but these relationships do not occur in males. Body lipid content affects the distance flown by both females and males through a significant interaction with sex and age. The factors examined in this study will vary with density in natural populations and are predicted to be important indicators of flight potential and dispersal in this species.

Research paper thumbnail of Nutrition, sex and season contribute to variation in fat and glycerol levels in the long-lived mothCaloptilia fraxinella

Physiological Entomology, Jan 12, 2016

The ash leaf cone roller Caloptilia fraxinella Ely (Lepidoptera: Gracillariidae) is an invasive l... more The ash leaf cone roller Caloptilia fraxinella Ely (Lepidoptera: Gracillariidae) is an invasive leaf‐mining moth pest of horticultural ash Fraxinus spp. in the Canadian Prairie Provinces. Caloptilia fraxinella overwinter as adults in reproductive diapause and mating occurs after overwintering in the spring. The effect of a carbohydrate food source on fat and glycerol reserves throughout the long adult life stage of this moth is investigated. Insects collected as pupae are given access to either water or sugar water upon adult eclosion. Moths held under the different feeding regimes are sampled before (summer and autumn) and after overwintering in the spring. Analysis of either glycerol or lipid content is conducted for male and female moths from each collection period. Both moth weight and glycerol concentration are affected by moth sex, food regime and season of collection. Although female moths are heavier than males, a higher glycerol concentration occurs in males. Moths fed sugar are heavier and have a higher glycerol concentration than water‐fed moths late in reproductive diapause and after overwintering. Moths collected in the spring after overwintering are lighter and have a lower glycerol content than moths collected before winter. There is a significant influence of feeding regime and season on moth body lipid content, with sugar‐fed moths having more fat than water‐fed moths; however, this difference is smaller in the summer than the autumn or spring. An initial understanding of the overwintering biology and diapause of this pest is provided in the present study.

Research paper thumbnail of Host Plant Volatile Lures Attract Apanteles polychrosidis (Hymenoptera: Braconidae) to Ash Trees Infested With Caloptilia fraxinella (Lepidoptera: Gracillariidae)

Frontiers in Ecology and Evolution, Jul 9, 2021

Research paper thumbnail of Effect of Environmental Conditions on Flight Capacity in Mountain Pine Beetle (Coleoptera: Curculionidae: Scolytinae)

Journal of Insect Behavior, Nov 19, 2020

Research paper thumbnail of The roles of juvenile hormone and biogenic amines on pheromone response plasticity and diapause termination in maleCaloptilia fraxinella

Entomologia Experimentalis Et Applicata, Jan 11, 2016

Research paper thumbnail of Efficacy and Mechanisms of Communication Disruption of the Red Clover Casebearer Moth (Coleophora deauratella) with Complete and Partial Pheromone Formulations

Journal of Chemical Ecology, Jun 1, 2014

Research paper thumbnail of Genetic diversity and population structure identify the potential source of the invasive red clover casebearer moth, Coleophora deauratella, in North America

Biological Invasions, Aug 8, 2016

Research paper thumbnail of Environmental conditions terminate reproductive diapause and influence pheromone perception in the long-lived moth<i>Caloptilia fraxinella</i>

Physiological Entomology, Jan 19, 2015

Research paper thumbnail of The effect of flight on reproduction in an outbreaking forest lepidopteran

Physiological Entomology, Apr 27, 2012

Research paper thumbnail of Development of a Combined Sex Pheromone-based Monitoring System for<i>Malacosoma disstria</i>(Lepidoptera: Lasoicampidae) and<i>Choristoneura conflictana</i>(Lepidoptera: Tortricidae)

Environmental Entomology, Apr 1, 2009

Research paper thumbnail of Effects of nutrition and methoprene treatment upon reproductive diapause in Caloptilia fraxinella (Lepidoptera: Gracillariidae)

Physiological Entomology, Sep 1, 2007

Research paper thumbnail of Development of a pheromone-based detection and monitoring technique for the western hemlock looper, Lambdina fiscellaria lugubrosa (Hulst) (Lepidoptera: Geometridae)

Research paper thumbnail of Influence of crop variety and fertilization on oviposition preference and larval performance of a generalist herbivore, the true armyworm, Mythimna unipuncta

Entomologia Experimentalis Et Applicata, Mar 1, 2020

Research paper thumbnail of Size and protein content of accessory glands in adult male<i>Caloptilia fraxinella</i>in different physiological states

Physiological Entomology, Jan 11, 2016

Research paper thumbnail of Small-plot studies comparing pheromone and juice baits for mass-trapping invasive<i>Synanthedon myopaeformis</i>in Canada

Entomologia Experimentalis Et Applicata, Sep 5, 2012

Research paper thumbnail of Semiochemical-Based Management of the Pea Leaf Weevil (Coleoptera: Curculionidae)

Annals of The Entomological Society of America, Jul 1, 2018

Abstract The pea leaf weevil, Sitona lineatus L. (Coleoptera: Curculionidae), is an important pes... more Abstract The pea leaf weevil, Sitona lineatus L. (Coleoptera: Curculionidae), is an important pest of pulse crops around the world. Adult pea leaf weevils rely on intra- and interspecific chemical cues to orient within their environment for the purposes of finding food and mates. Early research to identify semiochemical cues used by pea leaf weevils has permitted the development of semiochemical-baited traps that can reliably detect local movements and geographic range expansion of this species even at low population densities. More research is required to realize the potential of semiochemical-based management of the pea leaf weevil.The goals of this review are to: 1) introduce the chemical ecology of the pea leaf weevil and other Sitona species; 2) review the research conducted on semiochemical-based management of the pea leaf weevil in different growing regions; and 3) evaluate important areas of future research in both basic and applied chemical ecology of this pest.

Research paper thumbnail of The costs of colour: plasticity of melanin pigmentation in an outbreaking polymorphic forest moth

Entomologia Experimentalis Et Applicata, Jan 28, 2015

Research paper thumbnail of Relationships among male<i>Coleophora deauratella</i>(Lepidoptera: Coleophoridae) pheromone-baited trap capture, larval abundance, damage and flight phenology

Agricultural and Forest Entomology, Feb 19, 2014

ABSTRACT The red clover casebearer Coleophora deauratella Leinig and Zeller is an invasive pest o... more ABSTRACT The red clover casebearer Coleophora deauratella Leinig and Zeller is an invasive pest of red clover (Trifolium pratense L.) grown for seed production in Canada. Drastic yield losses (80–99.5%) have been reported in several growing regions over the last 30 years as a result of larval feeding damage.Field trials conducted in red clover seed production fields in Alberta, Canada, during the summers of 2010–2012 tested the efficacy of pheromone-baited traps to predict population density and assess male flight phenology of C. deauratella.Male moth pheromone-trap capture was positively related to larval abundance and proportion seed damage at both moderate and high population densities.Phenological models based on degree days (DD11.7) were better at describing median (50%) male flight compared with ordinal date models. Median C. deauratella male flight occurs at 258.39 DD11.7, starting from 1 January each year in the Peace River region of Alberta.The results obtained in the present study demonstrate that pheromone-baited traps can be used to detect the spread of this invasive species. Future work could incorporate pheromone-based monitoring into assessment for the need and timing of control measures to target this invasive pest.

Research paper thumbnail of Plasticity of male response to sex pheromone depends on physiological state in a long-lived moth

Animal Behaviour, Feb 1, 2008

Research paper thumbnail of Initial Development of an Attracticide Formulation Against the Oriental Fruit Moth, <I>Grapholita molesta</I> (Lepidoptera: Tortricidae)

Environmental Entomology, Apr 1, 2004

Research paper thumbnail of Factors influencing flight potential of Choristoneura conflictana

Physiological Entomology, Dec 5, 2008

Factors affecting the flight potential of Choristoneura conflictana, an insect that undergoes cyc... more Factors affecting the flight potential of Choristoneura conflictana, an insect that undergoes cyclical changes in population density, are investigated using computer‐linked flight mills. Female and male moths are flown for a 12‐h period and the longest single flight and total flight distance of each moth is recorded. After flight bioassays, moths are subjected to lipid extraction with a soxhlet apparatus to determine the effect of body lipid content on flight. Larger C. conflictana moths fly farther than smaller moths. Female C. conflictana fly farther than male moths but the effects of both mating status and moth age on the distance flown are dependent on sex. Mated females fly farther than virgins and older females fly farther than young females but these relationships do not occur in males. Body lipid content affects the distance flown by both females and males through a significant interaction with sex and age. The factors examined in this study will vary with density in natural populations and are predicted to be important indicators of flight potential and dispersal in this species.