Evidence map›Paper›PMID 42667454›Full record

ArticleJournal of chemical ecology2026

Variations on a Theme: Cerambycid Beetles Use Lactone Stereoisomers to Optimize Use of Pheromone Chemical Space.

Weliton D Silva, Yunfan Zou, Lawrence M Hanks, José Maurício S Bento, Jocelyn G Millar

Abstract read
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Article in Journal of chemical ecology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Weliton D Silva *Department of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil.ORCID http://orcid.org/0000-0001-9035-204X
Yunfan Zou *Department of Entomology, University of California, 3401 Watkins Drive, Riverside, CA, 92521, USA.ORCID http://orcid.org/0009-0009-5835-8922
Lawrence M HanksDepartment of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.ORCID http://orcid.org/0000-0003-2272-9284
José Maurício S BentoDepartment of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil.ORCID http://orcid.org/0000-0001-8655-5178
Jocelyn G MillarDepartment of Entomology, University of California, 3401 Watkins Drive, Riverside, CA, 92521, USA. millar@ucr.edu.ORCID http://orcid.org/0000-0001-7639-9001

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Three different diastereomers of 6-ethyl-3,5-dimethyltetrahydro-2H-pyran-2-one (henceforth lactone) were identified from male-specific volatiles produced by the neotropical cerambycid beetles (subfamily Lamiinae) Atrypanius lignarius (Bates), Oedopeza umbrosa (Germar), and Oreodera glauca glauca (L.). Atrypanius lignarius produced one of the enantiomers of the (3R*,5S*,6S*)-diastereomer, whereas O. umbrosa produced the (3S,5S,6R)-lactone, and O. glauca glauca produced the (3S,5R,6S)-lactone. In field bioassays, the O. umbrosa (3S,5S,6R)-lactone attracted only conspecific adults of both sexes. The racemic (3R*,5S*,6S*)-lactone was strongly attractive to A. lignarius, while also eliciting significant cross-attraction in O. umbrosa and also the lamiine cerambycid Aegomorphus jaspideus (Germar). Although O. glauca glauca was not captured during the trials, possibly because we were unable to carry out bioassays where it had originally been captured, the racemic (3S*,5R*,6S*)-lactone attracted the congener Oreodera quinquetuberculata (Drapiez), as well as A. lignarius, A. jaspideus, and O. umbrosa. These results suggest that the 6-ethyl-3,5-dimethyltetrahydro-2H-pyran-2-one structural motif, which attracted species of three tribes, may be widely shared within the Lamiinae, with species exploiting different stereoisomers to provide some degree of species specificity to their signals.

Indexed as

ColeopteraLactonesPheromonesSex AttractantsAnimalsMaleStereoisomerismLactonesPheromonesSex AttractantsAggregation-sex pheromoneCerambycidaeLonghorned beetlePheromone channelStructural motifs

Identifiers

PMID42667454

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.