期刊
ENTOMOLOGIA GENERALIS
卷 42, 期 4, 页码 531-538出版社
E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG
DOI: 10.1127/entomologia/2022/1417
关键词
Oviposition site selection; Human-Induced Rapid Environmental Change; Innate and learned preferences; Inbreeding depression; Genetic variation
类别
资金
- Fonds National de Recherche Scientifique F.R.S.-FNRS [J.0039.17, T.0169.21, J.0190.21, T.0189.20]
- UCLouvain [ARC 17/22-086]
Habitat fragmentation reduces genetic variability and increases species extinction risk. However, learning behavior can help animals adapt to fragmented habitats. In this study, inbreeding was found to reduce the ability of a spider mite species to learn and colonize new host plants.
Habitat fragmentation increases the isolation of natural populations resulting in reduced genetic variability and increased species extinction risk. Behavioral innovation through learning, i.e., the expression of a new learned behavior in a novel context, can help animals colonize new suitable and increasingly fragmented habitats. It has remained unclear, however, how reduced genetic variability affects learning for colonizing more or less suitable habitats. Here, we show that inbreeding in a subsocial invertebrate, the spider mite Tetranychus urticae, reduces novel host plant colonization and reproductive fitness. When provided with the possibility to learn from previous experience with a host plant species, out-bred mites learned to avoid new, less suitable, host plant species (aversive learning), while inbred mites did not adapt their behavior. We further found that both inbred and outbred mites learn at a cost as fertility was reduced in experienced mites. Our results reveal that inbreeding reduces the learning component of behavioral innovation for host plant colonization.
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