Toward a Model of Gypsy Moth Egg Phenology: Using Respiration Rates of Individual Eggs to Determine Temperature–Time Requirements of Prediapause Development

Gray, David; Logan, Jesse A.; Ravlin, F. William; Carlson, J. A.

doi:10.1093/ee/20.6.1645

Cited by 45 publications

(41 citation statements)

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“…Here, I will describe early models of gypsy moth egg phenology to illustrate the likely reason for a lack of geographic robustness. The larvae within newly oviposited eggs begin development in a prediapause phase that is characterized by abundant morphological development (Leonard, 1968) and developmental rates that are favored by high temperatures (Gray et al, 1991). After spending 25 days in prediapause (assuming a constant temperature regime of 20°C), the gypsy moth enters the diapause phase, which is characterized by a virtual absence of morphological development and developmental rates that are favored by low temperatures (Gray et al, 2001).…”

Section: Dmentioning

confidence: 99%

“…The gypsy moth egg phenology model of Gray includes the prediapause (Gray et al, 1991), diapause (Gray et al, 2001), and postdiapause phases of egg development. They used detailed measurements of the respiration rates of individual eggs to monitor phase transition (and therefore phase duration) under controlled temperatures.…”

Section: Dmentioning

confidence: 99%

“…However, these dates seem liberal (i.e., late), given that much of British Columbia and Utah will experience sub-zero temperatures by October, and sub-zero temperatures are extremely common throughout New Brunswick prior to 31 December. At the same time, daily maximum temperatures above the minimum prediapause developmental threshold 4°C (Gray et al, 1991) will still be common. Thus, these formulations of GLS, with arbitrary dates, allow the simulated population to escape cold-induced mortality while continuing prediapause development.…”

Section: Wwwintechopencommentioning

confidence: 99%

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Using Geographically Robust Models of Insect Phenology in Forestry

Gray¹

2012

Phenology and Climate Change

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Section: Dmentioning

confidence: 99%

Section: Dmentioning

confidence: 99%

Section: Wwwintechopencommentioning

confidence: 99%

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Using Geographically Robust Models of Insect Phenology in Forestry

Gray¹

2012

Phenology and Climate Change

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“…The GMLS model is a distributed description of the developmental responses of the gypsy moth in all life stages-from the egg to the emergence of adult moths. The egg development component of the model was described by Gray et al (1991Gray et al ( , 1995Gray et al ( , 2001. Larval and pupal development were described by Logan et al (1991) and Sheehan (1992).…”

Section: Model Descriptionmentioning

confidence: 99%

Risk assessment of the gypsy moth, Lymantria dispar (L), in New Zealand based on phenology modelling

2006

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The gypsy moth is a global pest that has not yet established in New Zealand despite individual moths having been discovered near ports. A climate-driven phenology model previously used in North America was applied to New Zealand. Weather and elevation data were used as inputs to predict where sustainable populations could potentially exist and predict the timing of hatch and oviposition in different regions. Results for New Zealand were compared with those in the Canadian Maritimes (New Brunswick, Nova Scotia, and Prince Edward Island) where the gypsy moth has long been established. Model results agree with the current distribution of the gypsy moth in the Canadian Maritimes and predict that the majority of New Zealand's North Island and the northern coastal regions of the South Island have a suitable climate to allow stable seasonality of the gypsy moth. New Zealand's climate appears more forgiving than that of the Canadian Maritimes, as the model predicts a wider range of oviposition dates leading to stable seasonality. Furthermore, we investigated the effect of climate change on the predicted potential distribution for New Zealand. Climate change scenarios show an increase in probability of establishment throughout New Zealand, most noticeably in the South Island.

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“…High temperatures affect mor tality, body size (Alpatov, 1930;Ochieng-Odero, 1992;Matsuki et al, 1994), flight ability (Shirai, 1993), oxygen consumption (Gray et al, 1991), juvenile hormone syn thesis (Cusson et al, 1990), and the activities of digestive enzymes (Applebaum et al, 1964;Ivanovic et al, 1975a, b), glycogen phosphorylase (Chen & Denlinger, 1990), glycolytic enzymes and the respiratory chain and detoxifi cation enzymes (Burnell et al, 1991). Elevated temperatures also disrupt the capability of insects to regu late water and Cl-ions (Colburn, 1983) and their toler ance to other stressors (Riskallan, 1984;DaLage et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

The effect of heat stress on the activity of A1 and A2 neurosecretory neurons of Morimus funereus (Coleoptera: Cerambycidae) larvae

Leković¹,

Lazarević²,

Nenadovic³

et al. 2001

Eur. J. Entomol.

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Abstract. A study on the effect of heat stress on the activity of the medial A1 and A2 neurosecretory neurons (NSN), and the activity of midgut a-amylase and protease was performed on the fifth larval instar of Morimus funereus. Exposure of the larvae to 35°C led to a decrease in the activity of both A1 and A2 NSN, the former being more marked than the latter. These neurons responded differently to heat stress in terms of neurosecretory material synthesis and release. The changes in the size of both A1 NSN and their nuclei and protease activity in the larvae exposed to elevated temperature were significantly correlated, which sug gests that A1 NSN play a role in the regulation of the activity of this enzyme during heat stress. The significant correlations between the size of A2 NSN and protease activity in the controls, and the size of both A2 NSN and their nuclei and amylase activity in larvae exposed to heat stress, similarly may mean that A2 NSN regulate both digestive enzyme activities depending on environmental tem perature.

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Toward a Model of Gypsy Moth Egg Phenology: Using Respiration Rates of Individual Eggs to Determine Temperature–Time Requirements of Prediapause Development

Cited by 45 publications

References 0 publications

Using Geographically Robust Models of Insect Phenology in Forestry

Using Geographically Robust Models of Insect Phenology in Forestry

Risk assessment of the gypsy moth, Lymantria dispar (L), in New Zealand based on phenology modelling

The effect of heat stress on the activity of A1 and A2 neurosecretory neurons of Morimus funereus (Coleoptera: Cerambycidae) larvae

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