Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats

The prevalence of obligate parasitic fungi may depend partly on the environmental conditions prevailing in the habitats of their hosts. Ectoparasitic fungi of the order Laboulbeniales (Ascomycetes) infect arthropods and form thalli on the host's body surface. Although several studies report the...

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Main Authors: Shinji SUGIURA, Kazuo YAMAZAKI, Hayato MASUYA
Format: Article
Language:English
Published: Institute of Entomology, Biology Centre, Czech Academy of Science 2010-02-01
Series:European Journal of Entomology
Subjects:
Online Access:https://www.eje.cz/artkey/eje-201001-0009_Incidence_of_infection_of_carabid_beetles_Coleoptera_Carabidae_by_laboulbenialean_fungi_in_different_habitat.php
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author Shinji SUGIURA
Kazuo YAMAZAKI
Hayato MASUYA
author_facet Shinji SUGIURA
Kazuo YAMAZAKI
Hayato MASUYA
author_sort Shinji SUGIURA
collection DOAJ
description The prevalence of obligate parasitic fungi may depend partly on the environmental conditions prevailing in the habitats of their hosts. Ectoparasitic fungi of the order Laboulbeniales (Ascomycetes) infect arthropods and form thalli on the host's body surface. Although several studies report the incidence of infection of certain host species by these fungi, quantitative data on laboulbenialean fungus-host arthropod interactions at the host assemblage level are rarely reported. To clarify the effects of host habitats on infection by ectoparasitic fungi, the incidence of infection by fungi of the genus Laboulbenia (Laboulbeniales) of overwintering carabid beetles (Coleoptera: Carabidae) in three habitats, a riverside (reeds and vines), a secondary forest and farmland (rice and vegetable fields), were compared in central Japan. Of the 531 adults of 53 carabid species (nine subfamilies) collected in the three habitats, a Laboulbenia infection of one, five and one species of the carabid subfamilies Pterostichinae, Harpalinae and Callistinae, respectively, was detected. Three species of fungus were identified: L. coneglanensis, L. pseudomasei and L. fasciculate. The incidence of infection by Laboulbenia was higher in the riverside habitat (8.97% of individuals; 14/156) than in the forest (0.93%; 2/214) and farmland (0%; 0/161) habitats. Furthermore, the incidence of infection by Laboulbenia in the riverside habitat ranged from 0 to 33.3% and differed significantly in the ten microhabitats (riverbank, edge of track, tall reeds, kudzu vines, slope of a hollow, rotten wood, vine reeds, under stones, the shoulder of a terrace and marshy ground) where the carabid beetles overwintered. These results suggest that host habitats and microhabitats are closely associated with successful infection by laboulbenialean fungi.
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spelling doaj.art-fb178b1c92b5458d9eb6a7f437b11e4a2022-12-21T20:33:43ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292010-02-011071737910.14411/eje.2010.009eje-201001-0009Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitatsShinji SUGIURA0Kazuo YAMAZAKI1Hayato MASUYA2Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-8687, Japan; e-mail: ssugiura@affrc.go.jpOsaka City Institute of Public Health and Environmental Sciences, Osaka 543-0026, JapanForestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-8687, Japan; e-mail: ssugiura@affrc.go.jpThe prevalence of obligate parasitic fungi may depend partly on the environmental conditions prevailing in the habitats of their hosts. Ectoparasitic fungi of the order Laboulbeniales (Ascomycetes) infect arthropods and form thalli on the host's body surface. Although several studies report the incidence of infection of certain host species by these fungi, quantitative data on laboulbenialean fungus-host arthropod interactions at the host assemblage level are rarely reported. To clarify the effects of host habitats on infection by ectoparasitic fungi, the incidence of infection by fungi of the genus Laboulbenia (Laboulbeniales) of overwintering carabid beetles (Coleoptera: Carabidae) in three habitats, a riverside (reeds and vines), a secondary forest and farmland (rice and vegetable fields), were compared in central Japan. Of the 531 adults of 53 carabid species (nine subfamilies) collected in the three habitats, a Laboulbenia infection of one, five and one species of the carabid subfamilies Pterostichinae, Harpalinae and Callistinae, respectively, was detected. Three species of fungus were identified: L. coneglanensis, L. pseudomasei and L. fasciculate. The incidence of infection by Laboulbenia was higher in the riverside habitat (8.97% of individuals; 14/156) than in the forest (0.93%; 2/214) and farmland (0%; 0/161) habitats. Furthermore, the incidence of infection by Laboulbenia in the riverside habitat ranged from 0 to 33.3% and differed significantly in the ten microhabitats (riverbank, edge of track, tall reeds, kudzu vines, slope of a hollow, rotten wood, vine reeds, under stones, the shoulder of a terrace and marshy ground) where the carabid beetles overwintered. These results suggest that host habitats and microhabitats are closely associated with successful infection by laboulbenialean fungi.https://www.eje.cz/artkey/eje-201001-0009_Incidence_of_infection_of_carabid_beetles_Coleoptera_Carabidae_by_laboulbenialean_fungi_in_different_habitat.phpcoleopteracarabidaeectoparasitic fungiascomyceteslaboulbeniamicrohabitatoverwintering sites
spellingShingle Shinji SUGIURA
Kazuo YAMAZAKI
Hayato MASUYA
Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats
European Journal of Entomology
coleoptera
carabidae
ectoparasitic fungi
ascomycetes
laboulbenia
microhabitat
overwintering sites
title Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats
title_full Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats
title_fullStr Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats
title_full_unstemmed Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats
title_short Incidence of infection of carabid beetles (Coleoptera: Carabidae) by laboulbenialean fungi in different habitats
title_sort incidence of infection of carabid beetles coleoptera carabidae by laboulbenialean fungi in different habitats
topic coleoptera
carabidae
ectoparasitic fungi
ascomycetes
laboulbenia
microhabitat
overwintering sites
url https://www.eje.cz/artkey/eje-201001-0009_Incidence_of_infection_of_carabid_beetles_Coleoptera_Carabidae_by_laboulbenialean_fungi_in_different_habitat.php
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