Document Type
Article
Journal/Book Title/Conference
Proceedings of the Royal Society B
Author ORCID Identifier
Paul B. Frandsen https://orcid.org/0000-0002-4801-7579
Christoph Mayer https://orcid.org/0000-0001-5104-6621
Alexander Donath https://orcid.org/0000-0001-5618-0547
Volume
291
Publisher
The Royal Society Publishing
Publication Date
7-3-2024
Journal Article Version
Version of Record
Keywords
phylogenomics, caddisfly, silk, aquatic insects, Trichoptera
First Page
1
Last Page
11
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Abstract
Caddisflies (Trichoptera) are among the most diverse groups of freshwater animals with more than 16 000 describes species. They play a fundamental role in freshwater ecology and environmental engineering in streams, rivers and lakes. Because of this, they are frequently used as indicator organisms in biomonitoring programmes. Despite their importance, key questions concerning the evolutionary history of caddisflies, such as the timing and origin of larval case making, remain unanswered owing to the lack of a well-resolved phylogeny. Here, we estimated a phylogenetic tree using a combination of transcriptomes and targeted enrichment data for 207 species, representing 48 of 52 extant families and 174 genera. We calibrated and dated the tree with 33 carefully selected fossils. The first caddisflies originated approximately 295 million years ago in the Permian, and major suborders began to diversify in the Triassic. Furthermore, we show that portable case making evolved in three separate lineages, and shifts in diversification occurred in concert with key evolutionary innovations beyond case making.
Recommended Citation
Frandsen PB et al. 2024 Phylogenomics recovers multiple origins of portable case making in caddisflies (Insecta: Trichoptera), nature's underwater architects. Proc. R. Soc. B 291: 20240514 https://doi.org/10.1098/rspb.2024.0514
