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A pheromone-based toolbox of longhorn beetles (Cerambycidae) for monitoring biodiversity in ephemeral deadwood substrates of oak

Molander, Mikael (2019). A pheromone-based toolbox of longhorn beetles (Cerambycidae) for monitoring biodiversity in ephemeral deadwood substrates of oak. Diss. (sammanfattning/summary) Alnarp : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2019:26
ISBN 978-91-7760-370-2
eISBN 978-91-7760-371-9
[Doctoral thesis]

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Forest biodiversity is exhibiting a worldwide decline in response to environmental changes that result in the rapid loss, degradation, and fragmentation of essential forest habitats. Saproxylic insects, especially beetles, are an important part of forest biodiversity by contributing to deadwood decomposition, and serving as important components of food webs. Many saproxylic beetles display negative population trends, and are listed on national and European Red Lists of threatened species. Despite their great importance, present knowledge on the ecology and conservation requirements of these beetles is limited, in part due to the absence of efficient tools to sample populations of many species. Recently, pheromone-based methods have been proposed as a novel tool to study saproxylic insects. Unfortunately, thus far, pheromones have only been identified for a small number of species of interest to conservation. In this work I identified the aggregation-sex pheromones of longhorn beetles dependent on fresh, recently dead, wood substrates of oak in Sweden, and examined the usefulness of the pheromone-based trapping approach for detecting local populations, and studying the species’ ecology. The pheromone-chemistry of eight species was considered, with a total of seven identified pheromone compounds (hydroxyketones, alcohols, and one ketone). The pheromones were used for systematic, large-scale monitoring studies in southern Sweden. The results served to significantly change the perception of several species’ distribution and abundance. Further, local beetle abundance (trap captures), was best correlated with habitat at relatively large spatial scales, indicating that future detailed analyses of the species’ ecology need to consider large spatial scales. Effects of oak forest management and habitat structure were examined in a three-year monitoring study. Generally, beetle abundance did not differ between ordinary oak production stands and two types of set-aside habitats for biodiversity. Most species also preferred more open, sun-exposed oak habitats. In addition, the beetles displayed short-term positive responses to logging in oak production stands, when fresh oak substrates were retained on site. The work clearly demonstrated the advantages of using pheromones to study these species and also offered early insights into the complicated, and highly dynamic, ecology of the species.

Authors/Creators:Molander, Mikael
Title:A pheromone-based toolbox of longhorn beetles (Cerambycidae) for monitoring biodiversity in ephemeral deadwood substrates of oak
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2019
Number of Pages:88
IMolander MA*, Winde IB, Burman J, Nyabuga NF, Lindblom TUT, Hanks LM, Millar JG, Larsson MC. Common cerambycid pheromone components as attractants for longhorn beetles (Cerambycidae) breeding in ephemeral oak substrates in Northern Europe. Journal of Chemical Ecology, accepted, minor revisions.
IIMolander MA*, Larsson MC (2018). Identification of the aggregation-sex pheromone of the cerambycid beetle Phymatodes pusillus ssp. pusillus and evidence of a synergistic effect from a heterospecific pheromone component. Journal of Chemical Ecology, 44 (11), pp. 987-998.
IIIMolander MA*, Helgesson J, Winde IB, Millar JG, Larsson MC (2019) The male-produced aggregation-sex pheromone of the cerambycid beetle Plagionotus detritus ssp. detritus. Journal of Chemical Ecology, 45 (1), pp. 28-36.
IVMolander MA*, Eriksson B, Winde IB, Zou Y, Millar JG, Larsson MC (2019) The aggregation-sex pheromones of the cerambycid beetles Anaglyptus mysticus and Xylotrechus antilope ssp. antilope: New model species for insect conservation through pheromone-based monitoring. Chemoecology, (in press).
VImrei Z*, Molander MA, Winde IB, Lohonyai Z, Csonka ÉB, Fail J, Hanks LM, Zou Y, Millar JG, Tóth M, Larsson MC (2019) Identification of the aggregation-sex pheromone of Plagionotus arcuatus ssp. Arcuatus (Coleoptera: Cerambycidae) from two geographically separated European populations. The Science of Nature, (in press).
VIMolander MA*, Backström L, Ponsonby C, Brunet J, Millar JG, Larsson MC. Interspecies associations and response to habitat at different spatial scales in four longhorn beetles breeding in ephemeral oak wood substrates. Manuscript.
VIIMolander MA*, Eriksson B, Vestlund M, Zou Y, Millar JG, Larsson MC. Pheromone-based monitoring in oak forests reveal no effect of set-aside conservation sites, but short-term effects of logging on habitat use by saproxylic longhorn beetles (Cerambycidae) with fast population dynamics. Manuscript
Place of Publication:Alnarp
Publisher:Department of Plant Protection Biology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-370-2
ISBN for electronic version:978-91-7760-371-9
Publication Type:Doctoral thesis
Article category:Other scientific
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Biochemistry and Molecular Biology
Keywords:Saproxylic species, Red List, indicators, GC-MS, hydrocarbon, forest management, forest biofuel, spatial scale, nature management, conservation
Permanent URL:
ID Code:16127
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:08 May 2019 08:39
Metadata Last Modified:20 May 2019 10:45

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