Temperature Dependent Growth and Mortality of Agrotis segetum

Esbjerg, P.; Sigsgaard, Lene

doi:10.3390/insects10010007

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…More than 25 years ago, when these experiments were conducted, most young hatched during the peak of dipteran prey. It is very likely that today these two phenological events are not synchronised: the development of invertebrates is strongly temperature-dependant (Regniere et al 2012;Esbjerg and Sigsgaard 2019), and the increase in spring temperatures has been very strong in the study area. Furthermore, many studies suggest that advancements in insect phenology are stronger than the ones of birds (e.g.…”

Section: Discussionmentioning

confidence: 99%

The effect of climate change on laying dates, clutch size and productivity of Eurasian Coots Fulica atra

2020

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Climate change is affecting many living organisms; however, the responses of many of them remain unknown. In this paper, we present the results regarding the response of a bird species from the rallid family to the increased temperatures during the breeding season. We analysed the breeding data of Eurasian Coots nesting during 30 seasons between 1972 and 2019. During the study period, mean temperatures in April, the month when Coots start nesting, increased by 3.5 °C, and in months corresponding with the species breeding season by 2.6 °C. Breeding Coots advanced their earliest and median laying dates across the study period; however, the duration of their breeding season remained unchanged. We did not detect any significant temporal changes in clutch size, but clutches have become much more variable in size throughout the study period. Nest failures and production of offspring per nest did not change over the study period; however, the production of young per successful nest significantly declined. It is likely that this decline is the effect of mismatch between the period of food abundance (dipterans collected from water), and hatchling emergence, which is advanced due to change in climate. Future studies investigating the occurrence of dipteran resources at water bodies are needed to test this hypothesis.

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Section: Discussionmentioning

confidence: 99%

The effect of climate change on laying dates, clutch size and productivity of Eurasian Coots Fulica atra

2020

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“…A. segetum hides in shallow soil near crops during the day and comes out at night to feed. The larvae chew the stems of crop plants close to the ground, thereby killing the entire plant and causing severe economic and ecological damage [ 8 , 10 ]. The moth is widely distributed in Europe, Asia, and Africa [ 11 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Population genomics of Agrotis segetum provide insights into the local adaptive evolution of agricultural pests

Wang,

Jin,

et al. 2024

BMC Biol

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Background The adaptive mechanisms of agricultural pests are the key to understanding the evolution of the pests and to developing new control strategies. However, there are few studies on the genetic basis of adaptations of agricultural pests. The turnip moth, Agrotis segetum (Lepidoptera: Noctuidae) is an important underground pest that affects a wide range of host plants and has a strong capacity to adapt to new environments. It is thus a good model for studying the adaptive evolution of pest species. Results We assembled a high-quality reference genome of A. segetum using PacBio reads. Then, we constructed a variation map of A. segetum by resequencing 98 individuals collected from six natural populations in China. The analysis of the population structure showed that all individuals were divided into four well-differentiated populations, corresponding to their geographical distribution. Selective sweep analysis and environmental association studies showed that candidate genes associated with local adaptation were functionally correlated with detoxification metabolism and glucose metabolism. Conclusions Our study of A. segetum has provided insights into the genetic mechanisms of local adaptation and evolution; it has also produced genetic resources for developing new pest management strategies.

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“…In the Xinjiang Province of China, A. segetum is a common, serious pest of seedling cotton [ 11 ] that can feed on the leaves, petioles, branches, and main stems of plants [ 12 ]. The larvae feed mainly near the ground on the stems of seedlings, causing severe crop loss and even the death of plants [ 12 , 13 ]. HIPVs emitted from cotton plants infested by A. segetum larvae significantly deter the oviposition of conspecific females [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Volatiles from Cotton Plants Infested by Agrotis segetum (Lep.: Noctuidae) Attract the Larval Parasitoid Microplitis mediator (Hym.: Braconidae)

Xia

Zhang

et al. 2022

Plants

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Herbivore-induced plant volatiles (HIPVs), chemicals produced by plants infested by herbivorous insects, can act as kairomones that recruit natural enemies of the pest herbivore. Agrotis segetum (Denis and Schiffermüller) is a common, important pest of seedling cotton in Xinjiang Province, China, and the braconid Microplitis mediator (Haliday) is an important mortality factor of this pest’s larvae. In olfactometer tests, which included healthy foliage, infested foliage, or infested roots, M. mediator preferred A. segetum-infested cotton plants to healthy cotton plants. In GC-MS analyses of plant-emitted volatiles, we found that compounds emitted increased 14.9- and 13.3- fold after leaf infestation and root infestation, respectively, compared to healthy control plants. The volatiles were mainly p-xylene, nonanal, tetradecane, decanal, benzaldehyde, β-caryophyllene, and humulene, while linalool was only present in the leaf-infestation treatment. In addition, principal component analysis indicated that all 18 compounds were associated with the infested plants, especially β-caryophyllene, p-xylene, and decanal. Based on the above studies and previous functional evaluations of the volatile compounds, it can be demonstrated that these compounds play a crucial role in modulating the interactions between A. segetum and M. mediator and regulating parasitoid behavior. It may be possible to enhance the biological control of A. segetum by M. mediator through the application of HIPVs.

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Temperature Dependent Growth and Mortality of Agrotis segetum

Cited by 8 publications

References 16 publications

The effect of climate change on laying dates, clutch size and productivity of Eurasian Coots Fulica atra

The effect of climate change on laying dates, clutch size and productivity of Eurasian Coots Fulica atra

Population genomics of Agrotis segetum provide insights into the local adaptive evolution of agricultural pests

Volatiles from Cotton Plants Infested by Agrotis segetum (Lep.: Noctuidae) Attract the Larval Parasitoid Microplitis mediator (Hym.: Braconidae)

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