Effects of Environmental Temperature on<i>Capnodis tenebrionis</i>Adult Phenology

Bonsignore, Carmelo Peter

doi:10.1155/2012/586491

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…Host phenology model and emergence of parasitoid species. Many previous studies have suggested linear and nonlinear equations for describing the rate of insect development and population dynamics (Bonsignore, 2012;Damos & Savopoulou-Soultani, 2012). In the present study, we used a nonlinear logistic equation (four-parameter regression model) with value coefficients obtained from all the datasets (2 years and three fields) for the cumulative percentage of each stage examined.…”

Section: Discussionmentioning

confidence: 99%

Environmental thermal levels affect the phenological relationships between the chestnut gall wasp and its parasitoids

2019

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Studies of thermal level‐related asynchrony in a host–parasitoid relationship are necessary to understand the effects of climate change on new host–parasitoid interactions. In the Asian chestnut gall wasp Dryocosmus kuriphilus (Hymenoptera: Cynipidae) and its Chalcidoidea parasitoids, phenological synchrony is assumed to be weather‐dependent in a new area of expansion. To evaluate the effects of environmental thermal regimes on the host, a phenology model for different cynipid stages (larvae, pupae, adults, and adult emergence) and a host–parasitoid phenological estimator are developed in three chestnut fields during two successive growth seasons and subsequently validated in areas with chestnut fields at two different altitudes. Comparisons of the timings of the juvenile and adult stages with those of the parasitoid complex demonstrate that the shortest period of occurrence for cynipids within galls has negative effects on the host–parasitoid relationships at higher temperature levels, thereby increasing phenological asynchrony for some parasitoids species. Reducing the development time of pupae and adults decreases the likelihood of success for some parasitoid species at higher temperature levels. We also record the extension of the gall wasp development time (approximately 15 days) at higher altitudes (linked to a lower mean temperature of approximately 1.5 °C). These results highlight how parasitization on the new hosts is dependent on the host phenology and, in the present study, is limited by the short duration of the presence of the host in galls, which could explain the considerable differences in cynipid gall wasp parasitization recorded at different altimeters.

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Section: Discussionmentioning

confidence: 99%

Environmental thermal levels affect the phenological relationships between the chestnut gall wasp and its parasitoids

2019

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“…Abundance, distribution and phenology of poikilotherm species are dependent on environmental and mostly climatic conditions (Hodar and Zamora ; Nahrung et al. ; Bonsignore ). In particular, variations in ambient temperature regulate fundamental biological processes such as reproduction and growth (Larsson and Kustvall ; Horton et al.…”

Section: Introductionmentioning

confidence: 99%

“…Seasonal adaptations of organisms are crucial for their survival and functioning in ecosystems. Abundance, distribution and phenology of poikilotherm species are dependent on environmental and mostly climatic conditions (Hodar and Zamora 2004;Nahrung et al 2008;Bonsignore 2012). In particular, variations in ambient temperature regulate fundamental biological processes such as reproduction and growth (Larsson and Kustvall 1990;Horton et al 2002;Norgate et al 2010;Damos 2012;R egni ere et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Phenological responses and a comparative phylogenetic insight of Anarsia lineatella and Grapholita molesta between distinct geographical regions within the Mediterranean basin

Damos

Bonsignore

Gardi

et al. 2014

J Applied Entomology

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A unique logistic model for predicting population dynamics of Anarsia lineatella and Grapholita molesta was evaluated on populations sampled from Italy and Greece. Intraspecific mtDNA divergence was additionally estimated in an effort to examine whether regional differences in moth phenologies are associated with genetic divergence. A. lineatella populations displayed closer similarities on phenological responses between the two observation regions. As a result, population fluctuations in both regions could be accurately predicted based on the constructed model. However, that was not the case for G. molesta as its populations exhibited a more regional behaviour, and thus, the model was less accurate. It is notable that degree‐day accumulations above the lower temperature thresholds were recorded in Italy on month earlier than in Greece (1st March in Calabria in contrast to 1st April in Veria). That kind of observed deviations in moth phenologies could be potentially attributed to regional environmental conditions or even genetic differentiation. Despite the low number of individuals analysed, this first attempt to study the levels of intraspecific divergence between Italian and Greek moth populations revealed that both species exhibit evidence of regional‐based separation. Our study provides the first comprehensive phenological comparison between populations of A. lineatella and G. molesta from Italy and Greece. At the same time, the population genetic structure data reveal differentiation between these two regions for both species, something that should be further investigated as it could provide a possible explanation for the observed phenological differences. Moreover, DNA barcoding confirmed that G. molesta pheromone blends attracted at least two morphologically close‐related tortricid moth species. This fact probably explains the phenological variations observed for this species as well as the difficulties in defining the number of non‐overlapping flights.

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“…C. tenebrionis overwinters as both larvae and adults. The overwintering generation commences adult emergence in spring coinciding with a rise in ambient temperature (Bonsignore et al, 2008); the new generation of adult offspring begins emerging in summer (Bonsignore, 2012).…”

Section: Introductionmentioning

confidence: 99%

Aggregation and mating success of Capnodis tenebrionis (Coleoptera: Buprestidae)

Bonsignore

Jones

2013

Insect Science

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An understanding of the relative importance of extrinsic and intrinsic factors in determining the potential distribution and mating success of individuals is critical for the successful monitoring and management of pest species. Using a combination of field observations and a caged field experiment, we explored the roles of environmental and individual variation on the formation of mating aggregations and mating success in the buprestid beetle Capnodis tenebrionis (Linnaeus, 1767), a pest species of stone fruit trees. Our field observations revealed that the formation of aggregations is influenced by a range of environmental factors including temperature, photoperiod, and population density. However, aggregations were not at random and were more likely to occur on the section of the plant with highest incidence of solar radiation and thus higher temperatures. Data from our experiment with caged beetles in the field further indicate that the reproductive behavior of this species varies with temperature. The probability of a successful mating occurring was also positively related to both male and female size. Females of C. tenebrionis mate several times over a 4-h period, but generally not with the same male. Information obtained from these studies is useful to define the most appropriate time for pest control, especially adopting strategies that interfere with reproduction.

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Effects of Environmental Temperature onCapnodis tenebrionisAdult Phenology

Cited by 6 publications

References 18 publications

Environmental thermal levels affect the phenological relationships between the chestnut gall wasp and its parasitoids

Environmental thermal levels affect the phenological relationships between the chestnut gall wasp and its parasitoids

Phenological responses and a comparative phylogenetic insight of Anarsia lineatella and Grapholita molesta between distinct geographical regions within the Mediterranean basin

Aggregation and mating success of Capnodis tenebrionis (Coleoptera: Buprestidae)

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