A new male-killing parasitism:<i>Spiroplasma</i>bacteria infect the ladybird beetle<i>Anisosticta novemdecimpunctata</i>(Coleoptera: Coccinellidae)

Tinsley, Matthew C.; Majerus, Michael E. N.

doi:10.1017/s0031182005009789

Cited by 85 publications

(70 citation statements)

References 34 publications

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“…BLAST search revealed the Cardinium sequences in our study to be most closely related to Cardinium hosted by various spider mite species, where it caused CI in E. suginamensis (Gotoh et al 2007a), a phytoseiid and a tick ( Table 2). The Spiroplasma (based on 16S rDNA) in our study was most closely related to male-killing Spiroplasma found in ladybirds Tinsley and Majerus 2006), an aphid, in which negative effects on growth, fecundity and longevity were observed (Fukatsu et al 2001) and a pseudococcid (Table 2). Wolbachia (based on wsp) sequences detected in the two prey species were only 84% identical among each other.…”

Section: Discussionsupporting

confidence: 62%

“…From the parasitoid wasp Encarsia it is known that C. hertigii causes thelytokous parthenogenesis (Zchori-Fein et al 2001) and in the predatory mite M. occidentalis Weeks and Stouthamer (2004) detected increased fecundity associated with C. hertigii -two examples of symbionts positively influencing biocontrol agents. Contrariwise there are examples of male killing Spiroplasma in ladybirds (Tinsley and Majerus 2006) and CI inducing Wolbachia in M. occidentalis (Johanowicz and Hoy 1996b), which could negatively influence their performance as biocontrol agents. Sex ratio distorting organisms could also positively or negatively affect herbivorous species--e.g.…”

Section: Discussionmentioning

confidence: 99%

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Incidence of the endosymbionts Wolbachia, Cardinium and Spiroplasma in phytoseiid mites and associated prey

Enigl¹,

Schausberger²

2007

Exp Appl Acarol

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Endosymbiotic bacteria that potentially influence reproduction and other fitness-related traits of their hosts are widespread in insects and mites and their appeal to researchers' interest is still increasing. We screened 20 strains of 12 agriculturally relevant herbivorous and predatory mite species for infection with Wolbachia, Cardinium and Spiroplasma by the use of PCR. The majority of specimens originated from Austria and were field collected or mass-reared. Eight out of 20 strains (40%) tested, representing seven of 12 mite species (58%), carried at least one of the three bacteria. We found Wolbachia in the herbivorous spider mites Tetranychus urticae and Bryobia rubrioculus, with the former also carrying Spiroplasma and the latter also carrying Cardinium. Cardinium was furthermore found in two populations of the predatory mite Euseius finlandicus and the spider mite Eotetranychus uncatus. Spiroplasma was detected in the predatory mite Neoseiulus californicus. All bacteria positive PCR products were sequenced, submitted to GenBank and analyzed in BLAST queries. We found high similarities to complete identity with bacteria found in the same and different mite species but also with bacteria found in insect species like ladybirds, butterflies and minute pirate bugs, Orius. We discuss the significance of potential (multiple) infections with the investigated bacteria for biological control.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Incidence of the endosymbionts Wolbachia, Cardinium and Spiroplasma in phytoseiid mites and associated prey

Enigl¹,

Schausberger²

2007

Exp Appl Acarol

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“…causes male-mortality by producing low hatchability and mortality of male offspring during the reproduction of infected females and causing selection towards feminised hosts (Hurst et al 1999;Pool et al 2006;Tinsley and Majerus 2006).…”

Section: Introductionmentioning

confidence: 99%

Endosymbiotic bacteria living inside the poultry red mite (Dermanyssus gallinae)

et al. 2009

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This study investigated the endosymbiotic bacteria living inside the poultry red mite collected from five samples of one commercial farm from the UK and 16 farms from France using genus-specific PCR, PCR-TTGE and DNA sequencing. Endosymbiotic bacteria are intracellular obligate organisms that can cause several phenotypic and reproductive anomalies to their host and they are found widespread living inside arthropods. The farm sampled from the UK was positive for bacteria of the genera Cardinium sp. and Spiroplasma sp. From France, 7 farms were positive for Cardinium sp., 1 farm was positive for Spiroplasma sp., 1 farm was positive for Rickettsiella sp. and 2 farms were positive for Schineria sp. However, it was not possible to detect the presence of the genus Wolbachia sp. which has been observed in other ectoparasites. This study is the first report of the presence of endosymbionts living inside the poultry red mite. The results obtained suggest that it may be possible that these bacterial endosymbionts cause biological modifications to the poultry red mite.

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“…Table 5 lists these species, notes relevant factors affecting liability to male-killer invasion, and makes predictions of liability based on these factors. Subsequent work on one of these species identified a malekiller, confirming the prediction (Tinsley and Majerus 2006). Work to test predictions for the other species made on the basis of the extended criteria described above would be valuable.…”

Section: Discussionmentioning

confidence: 59%

Male-killing in the Coccinellidae: testing the predictions

Majerus

Majerus²

2011

Evol Ecol

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Male-killing endosymbionts have been widely reported in the invertebrates and are highly prevalent in the Coccinellidae. The presence of male-killers can lead to extreme bias in host population sex ratios and may have important and far-reaching consequences for the life-history and evolution of their hosts. Male-killers may have direct and indirect effects on host fitness and reproductive behaviour, as well as affecting the host genome, either via strong selection pressure imposed by highly female-biased population sex ratios or by selective sweeps caused as a male-killer conferring an advantage to infected individuals spreads through a population. Criteria used to predict which species are liable to male-killer invasion, based on a variety of ecological factors, have been produced. In summary male-killers are predicted to occur in aphidophageous species, that lay eggs in clutches, show sibling egg consumption and are liable to neonatal larval mortality due to starvation. We assayed 30 species of Coccinellid for the presence of such male-killers to assess the predictive accuracy of the criteria. Male-killers were identified in 8 species in which they were predicted to occur and were absent from all 10 species predicted not to harbor them. Analysis of the remaining 12 species, where male-killers were predicted by the original criteria, but where they were not found, allowed us to identify areas where the criteria can be refined and improved. We conclude that whilst the original criteria give a reasonably accurate prediction, there are refinements and improvements, concerning details of host diet and life-history, which make them more robust, especially in the light of discoveries of male-killing suppressors and when incorporated give a better fit to our findings from field samples. Michael E. N. Majerus-deceased. Electronic supplementary material The online version of this article (

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A new male-killing parasitism:Spiroplasmabacteria infect the ladybird beetleAnisosticta novemdecimpunctata(Coleoptera: Coccinellidae)

Cited by 85 publications

References 34 publications

Incidence of the endosymbionts Wolbachia, Cardinium and Spiroplasma in phytoseiid mites and associated prey

Incidence of the endosymbionts Wolbachia, Cardinium and Spiroplasma in phytoseiid mites and associated prey

Endosymbiotic bacteria living inside the poultry red mite (Dermanyssus gallinae)

Male-killing in the Coccinellidae: testing the predictions

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