Nutritional symbionts of a putative vector, Xyleborus bispinatus, of the laurel wilt pathogen of avocado, Raffaelea lauricola

Saucedo, J. R.; Ploetz, R. C.; Konkol, Joshua L.; Ángel, Manuel; Mantilla, Julio; Menocal, Octavio; Carrillo, Daniel

doi:10.1007/s13199-017-0514-3

Cited by 22 publications

(16 citation statements)

References 45 publications

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“…In our experiments, the mycangia of X. bispinatus were scarcely colonized by R. lauricola , whereas other Raffaelea species were more frequent and abundant. Our results differ from those of Saucedo et al [ 43 ], in that they found higher numbers of CFUs of the pathogen in X. bispinatus mycangia.…”

Section: Discussioncontrasting

confidence: 99%

“…It could be hypothesized that the colonization of the mycangia of any ambrosia beetle is influenced by the first fungi it encounters at the moment when pupae (which do not yet possess mycangia) develop into adults. As the female adults that were employed to establish colonies in the present study did possess mycangia, which were presumably pre-colonized with other symbionts, it is possible that there were reduced opportunities for R. lauricola to colonize their mycangia, compared to those in the study of Saucedo et al [ 43 ], in which colonies of X. bispinatus were established with individuals that were exposed to a single symbiont. In the latter situation, it seems probable that there would be an increased opportunity for colonization by R. lauricola, especially when new adults of X. bispinatus had only been exposed to that fungus.…”

Section: Discussionmentioning

confidence: 59%

“…Three R. species ( R. arxii , R. subalba , R. subfusca ) were frequently associated with galleries, heads, and bodies, suggesting that they are nutritional symbionts of X. bispinatus . Recently, Saucedo et al [ 43 ] has demonstrated that production of male progeny by females of X. bispinatus is possible when these symbionts are individually offered in artificial media amended with these fungi. Moreover, the indiscriminate association of X. bispinatus with these three species suggests that this beetle may not have an obligatory relationship with one specific fungus to fulfill its nutritional requirements, as observed for Dendroctonus brevicomis LeConte [ 44 ].…”

Section: Discussionmentioning

confidence: 99%

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Xyleborus bispinatus Reared on Artificial Media in the Presence or Absence of the Laurel Wilt Pathogen (Raffaelea lauricola)

Menocal

Cruz

Kendra³

et al. 2018

Insects

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Like other members of the tribe Xyleborini, Xyleborus bispinatus Eichhoff can cause economic damage in the Neotropics. X. bispinatus has been found to acquire the laurel wilt pathogen Raffaelea lauricola (T. C. Harr., Fraedrich & Aghayeva) when breeding in a host affected by the pathogen. Its role as a potential vector of R. lauricola is under investigation. The main objective of this study was to evaluate three artificial media, containing sawdust of avocado (Persea americana Mill.) and silkbay (Persea humilis Nash.), for rearing X. bispinatus under laboratory conditions. In addition, the media were inoculated with R. lauricola to evaluate its effect on the biology of X. bispinatus. There was a significant interaction between sawdust species and R. lauricola for all media. Two of the media supported the prolific reproduction of X. bispinatus, but the avocado-based medium was generally more effective than the silkbay-based medium, regardless whether or not it was inoculated with R. lauricola. R. lauricola had a neutral or positive effect on beetle reproduction. The pathogen was frequently recovered from beetle galleries, but only from a few individuals which were reared on inoculated media, and showed limited colonization of the beetle’s mycangia. Two media with lower water content were most effective for rearing X. bispinatus.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 99%

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Xyleborus bispinatus Reared on Artificial Media in the Presence or Absence of the Laurel Wilt Pathogen (Raffaelea lauricola)

Menocal

Cruz

Kendra³

et al. 2018

Insects

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“…Ambrosia beetles depend upon their fungal symbionts for development and reproduction ( Saucedo et al, 2018 ). Here the E. interjectus – F. kuroshium symbiotic association seems to exhibit strict specificity based on the dominance of fungal isolates.…”

Section: Discussionmentioning

confidence: 99%

“…Ambrosia beetles depend upon their fungal symbionts for development and reproduction (Saucedo et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Novel Symbiotic Association Between Euwallacea Ambrosia Beetle and Fusarium Fungus on Fig Trees in Japan

2021

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Ficus carica plantations in Japan were first reported to be infested by an ambrosia beetle species, identified as Euwallacea interjectus, in 1996. The purpose of this study was to determine the symbiotic fungi of female adults of E. interjectus emerging from F. carica trees infected with fig wilt disease (FWD). Dispersal adults (51 females) of E. interjectus, which were collected from logs of an infested fig tree in Hiroshima Prefecture, Western Japan, were separated into three respective body parts (head, thorax, and abdomen) and used for fungal isolation. Isolated fungi were identified based on the morphological characteristics and DNA sequence data. Over 13 species of associated fungi were detected, of which a specific fungus, Fusarium kuroshium, was dominant in female head (including oral mycangia). The plant-pathogenic fungus of FWD, Ceratocystis ficicola, was not observed within any body parts of E. interjectus. We further discussed the relationship among E. interjectus and its associated fungi in fig tree.

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Insect-Fungus Interactions in Dead Wood Systems

Birkemoe

Jacobsen

Sverdrup‐Thygeson

et al. 2018

Zoological Monographs

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Nutritional symbionts of a putative vector, Xyleborus bispinatus, of the laurel wilt pathogen of avocado, Raffaelea lauricola

Cited by 22 publications

References 45 publications

Xyleborus bispinatus Reared on Artificial Media in the Presence or Absence of the Laurel Wilt Pathogen (Raffaelea lauricola)

Xyleborus bispinatus Reared on Artificial Media in the Presence or Absence of the Laurel Wilt Pathogen (Raffaelea lauricola)

Novel Symbiotic Association Between Euwallacea Ambrosia Beetle and Fusarium Fungus on Fig Trees in Japan

Insect-Fungus Interactions in Dead Wood Systems

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