0471606 - BC 2018 RIV US eng J - Článek v odborném periodiku
Sam, Kateřina - Čtvrtečka, R. - Miller, S. E. - Rosati, M. E. - Molem, K. - Damas, K. - Gewa, B. - Novotný, Vojtěch
Low host specificity and abundance of frugivorous lepidoptera in the lowland rain forests of Papua New Guinea.
PLoS ONE. Roč. 12, č. 2 (2017), č. článku e0171843. ISSN 1932-6203. E-ISSN 1932-6203
Grant ostatní: GA ČR(CZ) GA13-09979S
Institucionální podpora: RVO:60077344
Klíčová slova: frugivorous insect * Lepidoptra * rearing
Obor OECD: Ecology
Impakt faktor: 2.766, rok: 2017 ; AIS: 1, rok: 2017
Web výsledku:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0171843DOI: https://doi.org/10.1371/journal.pone.0171843

We studied a community of frugivorous Lepidoptera in the lowland rainforest of Papua New Guinea. In total, we reared 122 Lepidoptera species represented by 1,720 individuals from 326 woody plant species. We found that only fruits from 52% of the plant species were attacked. On average, Lepidoptera were reared from 1 in 89 fruits and a kilogram of fruit was attacked by 1.01 individuals. Host specificity of Lepidoptera was notably low: 69% of species attacked plants from >1 family, 8% fed on single family, 6% on single genus and 17% were monophagous. The average kilogram of fruits was infested by 0.81 individual from generalist species (defined here as feeding on >1 plant genus) and 0.07 individual from specialist species (feeding on a single host or congeneric hosts). Caterpillars preferred smaller fruits with both smaller mesocarp and seeds. Large-seeded fruits with thin mesocarp tended to host specialist species whereas those with thick, fleshy mesocarp were often infested with both specialist and generalist species. The very low incidence of seed damage suggests that predispersal seed predation by Lepidoptera does not play a major role in regulating plant populations via density-dependent mortality processes outlined by the Janzen-Connell hypothesis.
Trvalý link: http://hdl.handle.net/11104/0271170