Genetics and Evolution of Ladybird Beetles in Biological Control

A special issue of Insects (ISSN 2075-4450).

Deadline for manuscript submissions: 31 October 2024 | Viewed by 1636

Special Issue Editors


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Guest Editor
School of Ecology, Sun Yat-sen University, Shenzhen 518107, China
Interests: the origin and evolution of insect diversity; systematic classification of Coleoptera; biological control; population genetics and resource utilization of ladybird beetles (Coccinellidae)

E-Mail Website
Guest Editor
School of Ecology, Sun Yat-sen University, Shenzhen 518107, China
Interests: ladybird beetles; feeding habits; biological control; predator-prey interaction; insect-microbe symbiosis; population genetics

Special Issue Information

Dear Colleagues,

Ladybird beetles (Coleoptera, Coccinellidae) are widely used in biological control practices. The introduction, artificial rearing, and release of ladybird beetles can contribute to their rapid evolution, resulting in changes in various characteristics such as life history, dietary preferences, and resistance to adverse conditions. Understanding of the genetic and evolutionary aspects of ladybird beetles can have implications for the effectiveness of biological control strategies. This Special Issue focuses on the scientific issue of “Genetics and Evolution of Ladybird Beetles in Biological Control” and seeks contributions from experts and scholars in the field. This Special Issue aims to show the latest research advancements and reviews in the areas including but not limited to the following:

  1. Population genetic changes in ladybird beetles resulting from artificial introductions.
  2. Evolution of characteristics related to biological control in ladybird beetles.
  3. Selective breeding strategies applied to ladybird beetles.
  4. Co-evolution between ladybird beetles and their prey species.

Prof. Dr. Hong Pang
Dr. Hao-Sen Li
Guest Editors

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Keywords

  • ladybird beetles
  • biological control
  • evolution
  • population genetics
  • selective breeding
  • predator–prey interaction

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Published Papers (2 papers)

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Research

10 pages, 2516 KiB  
Article
Effect of Ephestia kuehniella Eggs on Development and Transcriptome of the Ladybird Beetle Propylea japonica
by Guannan Li, Pei-Tao Chen, Mei-Lan Chen, Tuo-Yan Chen, Yu-Hao Huang, Xin Lü, Hao-Sen Li and Hong Pang
Insects 2024, 15(6), 407; https://doi.org/10.3390/insects15060407 - 2 Jun 2024
Viewed by 522
Abstract
The eggs of the Mediterranean flour moth, Ephestia kuehniella, are frequently utilized as alternative diets and have demonstrated promising outcomes when consumed by various insects. Nonetheless, the specific reasons for their effectiveness remain unclear. In our study, we assessed the developmental performance [...] Read more.
The eggs of the Mediterranean flour moth, Ephestia kuehniella, are frequently utilized as alternative diets and have demonstrated promising outcomes when consumed by various insects. Nonetheless, the specific reasons for their effectiveness remain unclear. In our study, we assessed the developmental performance of the ladybird Propylea japonica when fed E. kuehniella eggs, alongside 12 factitious prey or artificial diets. Our findings revealed that ladybirds fed E. kuehniella eggs displayed a performance comparable to those fed the natural prey Megoura crassicauda. Transcriptome profiling of larvae raised on E. kuehniella eggs and M. crassicauda revealed that genes upregulated in the former group were enriched in metabolic pathways associated with carbohydrates, lipids, and other essential nutrients. This suggests that E. kuehniella eggs may have a higher nutrient content compared to natural prey. Furthermore, a notable downregulation in the expression of immune effector genes, such as Attacin and Coleoptericin, was observed, which might be attributed to the lower microbial content in E. kuehniella eggs compared to M. crassicauda. We suggest that the difference between E. kuehniella eggs and M. crassicauda as food sources for P. japonica lies in their nutrient and microbial contents. These findings provide valuable insights for the advancement of innovative artificial breeding systems for natural enemies. Full article
(This article belongs to the Special Issue Genetics and Evolution of Ladybird Beetles in Biological Control)
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12 pages, 979 KiB  
Article
Non-Consumptive Effects of Harmonia axyridis on the Reproduction and Metabolism of Spodoptera frugiperda
by Zeyun Fan, Xiaolu Lv, Yuyang Huang, Weizhen Kong, Chongjian Ma and He Yan
Insects 2024, 15(6), 395; https://doi.org/10.3390/insects15060395 - 28 May 2024
Viewed by 808
Abstract
An increasing body of research has underscored the significant impact of non-consumptive effects on the dynamics of prey pests, encompassing growth, development, reproduction, and metabolism across various vertebrate and invertebrate taxa, rivaling the influence of consumption effects. In our investigation, we delved into [...] Read more.
An increasing body of research has underscored the significant impact of non-consumptive effects on the dynamics of prey pests, encompassing growth, development, reproduction, and metabolism across various vertebrate and invertebrate taxa, rivaling the influence of consumption effects. In our investigation, we delved into the non-consumptive effects exerted by the natural predatory enemy Harmonia axyridis on the reproductive capacity and metabolism of Spodoptera frugiperda adults. Our findings revealed a substantial decrease in the reproductive ability of S. frugiperda adults when exposed to the non-consumptive effects of H. axyridis. Concurrently, we observed an elevation in hydrogen peroxide (H2O2) content and the activities of antioxidant enzymes such as superoxide dismutases (SODs), catalases (CATs), and peroxidases (PODs). Furthermore, notable alterations were detected in energy metabolism, characterized by heightened triglyceride levels and diminished glycogen and trehalose concentrations. These outcomes underscored the adaptive response of the pest aimed at mitigating non-consumptive adverse effects by augmenting antioxidant enzyme activity to counteract oxidative stress and minimize cellular damage. Nonetheless, this defensive mechanism entails a significant expenditure of energy resources, resulting in shifts in energy utilization. Elevated triglyceride levels and reduced glycogen and trehalose concentrations diminish available resources for reproductive processes, such as egg laying, ultimately culminating in decreased fecundity. This study contributes novel insights into the non-consumptive effects observed in insects, while also furnishing valuable insights into the mechanisms underlying insect stress responses. Full article
(This article belongs to the Special Issue Genetics and Evolution of Ladybird Beetles in Biological Control)
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