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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Temporal distribution in a tri-trophic system associated with Piper amalago L. in a tropical seasonal forest

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Cosmo, Leandro G. [1] ; Nascimento, Andre R. [1] ; Cogni, Rodrigo [2] ; Freitas, Andre V. L. [1]
Total Authors: 4
[1] Univ Estadual Campinas, Dept Biol Anim, Inst Biol, CP 6109, BR-13083970 Campinas - Brazil
[2] Univ Sao Paulo, Dept Ecol, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ARTHROPOD-PLANT INTERACTIONS; v. 13, n. 4, p. 647-652, AUG 2019.
Web of Science Citations: 0

Insect seasonality is a known pattern that has intrigued ecologists for over 30years. However, despite being well understood in general, for several taxa such as Lepidopteran caterpillars its underlying causes and mechanisms are still not fully understood. This is especially critical for Brazilian tropical forests where caterpillars have previously been shown to have a puzzling pattern of peaking in abundance only in the first months of the dry season; however, this pattern still lacks an explanation. Here, to advance our understanding of the factors underlying seasonal changes in caterpillar abundance in tropical forests, we addressed how the lepidopteran caterpillar community that feeds on Piper amalago L. plants, their host plants leaf numbers, the herbivory levels, and the parasitoid pressure all change throughout the dry and wet seasons in a Brazilian tropical semideciduous forest. We found that immature abundance and herbivory peak in the first 2months of the dry season and then rapidly decrease and remain low throughout the remaining of the dry season and the entire wet season at the study site. However, although the proportion of parasitized immatures increased alongside caterpillar abundance, it peaked in the month that followed a drastic decrease in caterpillar abundance. These results suggest that parasitoids play a major role in the observed caterpillar abundance pattern and thus, we propose the hypothesis that high parasitoid predation pressure causes early eclosion and emergence of caterpillars and primarily drives caterpillar abundance seasonality in Brazilian tropical forests. (AU)

FAPESP's process: 11/50225-3 - Natural history, phylogeny and conservation of Neotropical Lepidoptera
Grantee:André Victor Lucci Freitas
Support type: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 13/25991-0 - Ecological genomics of insects: climate adaptations and evolution of ecological interactions
Grantee:Rodrigo Cogni
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 14/50316-7 - Dimensions US-Biota São Paulo: Chemically mediated multi-trophic interaction diversity across tropical gradients
Grantee:Massuo Jorge Kato
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 16/01380-0 - Composition and abundance of lepidopteran larvae associated with Piper spp. (Piperales: Piperaceae) in the Mata de Santa Genebra, SP
Grantee:Leandro Giacobelli Cosmo
Support type: Scholarships in Brazil - Scientific Initiation