Aquatic Insects: Ecology, Diversity and Conservation

A special issue of Insects (ISSN 2075-4450). This special issue belongs to the section "Insect Ecology, Diversity and Conservation".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 597

Special Issue Editor


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Guest Editor
Faculty of Teacher Education, University of Zagreb, Trg Matice Hrvatske 12, HR-44250 Petrinja, Croatia
Interests: aquatic insects; biodiversity; community ecology; Ephemeroptera; Odonata; Plecoptera; Megaloptera; wildlife conservation
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Special Issue Information

Dear Colleagues,

Inland waters, comprising various lotic and lentic habitats, contribute less than 1% of the total water in the biosphere, and yet they provide a habitat for 10% of currently known animal species. Aquatic insects represent the most abundant groups of freshwater animals, with around 100,000 extant species having been described. Most aquatic insects are merolimnic; i.e., they spend their immature stages in aquatic habitats, and adults inhabit terrestrial environments (e.g. mayflies, stoneflies, caddisflies, dragonflies and mosquitoes). Several groups spend their entire life cycle in freshwater (e.g., some water beetles and aquatic true bugs).

The wide range of functional roles played by aquatic insects differ based on their life stage, feeding strategies and habitat preference, but they have enormous ecological importance in both freshwater and terrestrial habitats. The important functional roles played by aquatic insects, which represent a huge biomass, include nutrient cycling (as detritivores and decomposers), primary consumers (both plant and microbial), and food webs (predators and prey). Some aquatic insects, such as mayflies, stoneflies, caddisflies and dragonflies, are particularly sensitive to morphological alterations and pollution in their habitats and are thus widely used in biomonitoring assessments.

Despite increased research efforts by freshwater ecologists, entomologists and molecular biologists over the last several decades, there are still large gaps in our knowledge of aquatic insects’ taxonomy, systematics, distribution, ecological requirements and conservation status. Therefore, this Special Issue invites submissions addressing all aspects of the diversity, ecology and conservation of aquatic insects.

Dr. Marina Vilenica
Guest Editor

Manuscript Submission Information

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Keywords

  • community ecology
  • conservation ecology
  • taxonomy
  • phylogenetics
  • monitoring
  • aquatic insects

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Published Papers (1 paper)

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Research

20 pages, 12053 KiB  
Article
Integrated mRNA and miRNA Omics Analyses Reveal Transcriptional Regulation of the Tolerance Traits by Aquatica leii in Response to High Temperature
by Chao Liu, Jiapeng Li, Lihong Yan, Yuting Zhu, Zikun Li, Chengquan Cao and Yiping Wang
Insects 2025, 16(3), 316; https://doi.org/10.3390/insects16030316 - 18 Mar 2025
Viewed by 386
Abstract
Within the context of global warming, understanding the molecular mechanisms behind physiological plasticity and local adaptation is essential for insect populations. This study performed an integrated miRNA and mRNA analysis on Aquatica leii larvae exposed to temperatures of 20 °C, 24 °C, 28 [...] Read more.
Within the context of global warming, understanding the molecular mechanisms behind physiological plasticity and local adaptation is essential for insect populations. This study performed an integrated miRNA and mRNA analysis on Aquatica leii larvae exposed to temperatures of 20 °C, 24 °C, 28 °C, and 32 °C. Under varying thermal conditions, 1983 genes exhibited differential expression (i.e., DEGs). These genes showed significant enrichment in Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways related to carbohydrate metabolism, glycan biosynthesis and metabolism. Notably, we detected that the “neuroactive ligand–receptor interaction” signaling pathway, which is involved in environmental information processing, was significantly upregulated in the 28 °C and 32 °C treatment groups. This indicates that starting at 28 °C, A. leii needs to maintain normal cellular physiological functions by regulating ligand–receptor binding and signal transduction. Furthermore, 220 differentially expressed miRNAs (DEMs) were detected under the different temperature treatment conditions. An interaction network was constructed between key DEMs and DEGs, revealing 12 significant DEM-DEG regulatory pairs in A. leii under different temperature treatments. We found three miRNA-mRNA candidate modules that could be involved in A. leii’s response to high temperature, including ggo-miR-1260b and ptr-miR-1260b/RN001_010114, CM069438.1_43851/RN001_014852, and CM069438.1_43851/RN001_014877. Our data provide deeper insights into the molecular responses of A. leii to the high temperature at the miRNA and mRNA levels. Full article
(This article belongs to the Special Issue Aquatic Insects: Ecology, Diversity and Conservation)
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