Inter‐ and intraspecific variation in mycotoxin tolerance: A study of four Drosophila species. Issue 7 (24th July 2022)

• Record Type: Journal Article
• Authors: Kokate, Prajakta P.; Smith, Morgan; Hall, Lucinda; Zhang, Kui; Werner, Thomas
• Is Part Of: Ecology and evolution. Volume 12:Issue 7(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-07-24
• Subjects: geographical variation -- interspecific genetic variation -- intraspecific genetic variation -- mycotoxin tolerance; Ecology -- Periodicals; Evolution -- Periodicals; 577.05
• DOI: 10.1002/ece3.9126
• Languages: English
• ISSNs: 2045-7758

Abstract

Abstract: Many mycophagous Drosophila species have adapted to tolerate high concentrations of mycotoxins, an ability not reported in any other eukaryotes. Although an association between mycophagy and mycotoxin tolerance has been established in many Drosophila species, the genetic mechanisms of the tolerance are unknown. This study presents the inter‐ and intraspecific variation in the mycotoxin tolerance trait. We studied the mycotoxin tolerance in four Drosophila species from four separate clades within the immigrans ‐ tripunctata radiation from two distinct locations. The effect of mycotoxin treatment on 20 isofemale lines per species was studied using seven gross phenotypes: survival to pupation, survival to eclosion, development time to pupation and eclosion, thorax length, fecundity, and longevity. We observed interspecific variation among four species, with D. falleni being the most tolerant, followed by D. recens, D. neotestacea, and D. tripunctata, in that order. The results also revealed geographical variation and intraspecific genetic variation in mycotoxin tolerance. This report provides the foundation for further delineating the genetic mechanisms of the mycotoxin tolerance trait. Abstract : Many mycophagous Drosophila species have adapted to tolerate high concentrations of mycotoxins, an ability not reported in any other eukaryotes. We observed interspecific variation among four species, with D. falleni being the most tolerant, followed by D. recens, D. neotestacea, and D. tripunctata, in that order. We further observed fitness effects of the mycotoxin tolerance in two species: D. tripunctata and D. neotestacea.