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          Institute: MPI für Entwicklungsbiologie     Collection: Abteilung 4 - Evolutionary Biology (R. Sommer)     Display Documents



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ID: 708670.0, MPI für Entwicklungsbiologie / Abteilung 4 - Evolutionary Biology (R. Sommer)
Preferential host switching and codivergence shaped radiation of bark beetle symbionts, nematodes of Micoletzkya (Nematoda: Diplogastridae)
Authors:Susoy, V.; Herrmann, M.
Date of Publication (YYYY-MM-DD):2014-05
Title of Journal:Journal of Evolutionary Biology
Journal Abbrev.:J Evol Biol
Volume:27
Issue / Number:5
Start Page:889
End Page:898
Sequence Number of Article:24731122
Review Status:Internal review
Audience:Experts Only
Abstract / Description:Host-symbiont systems are of particular interest to evolutionary biology because they allow testable inferences of diversification processes while also providing both a historical basis and an ecological context for studies of adaptation. Our investigations of bark beetle symbionts, predatory nematodes of the genus Micoletzkya, have revealed remarkable diversity of the group along with a high level of host specificity. Cophylogenetic analyses suggest that evolution of the nematodes was largely influenced by the evolutionary history of beetles. The diversification of the symbionts, however, could not be attributed to parallel divergence alone; our results indicate that adaptive radiation of the nematodes was shaped by preferential host shifts among closely related beetles along with codivergence. Whereas ecological and geographic isolation have played a major role in the diversification of Micoletzkya at shallow phylogenetic depths, adaptations towards related hosts have played a role in shaping cophylogenetic structure at a larger evolutionary scale.
Free Keywords:Animals; Beetles/genetics/*parasitology; Biodiversity; *Host Specificity; Host-Parasite Interactions; Molecular Sequence Data; Nematoda/genetics/*physiology; Phylogeny; RNA, Ribosomal, 18S/genetics; Symbiosis/*physiology
External Publication Status:published
Document Type:Article
Communicated by:MPI für Entwickungsbiologie
Affiliations:MPI für Entwicklungsbiologie/Abteilung 4 - Evolutionsbiologie (Ralf J. Sommer)
Identifiers:ISSN:1420-9101 (Electronic) 1010-061X (Linking) %R 10.1... [ID No:1]
URL:http://www.ncbi.nlm.nih.gov/pubmed/24731122 [ID No:2]
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