Summary of Narita and Kageyama (2008)

Below is the summary originally written for Narita and Kageyama (2008)  but was deleted during publication process.

Insect Symbiosis 3; Chapter 13
Wolbachia-induced sex reversal in Lepidoptera
Satoko Narita and Daisuke Kageyama

Summary
It is generally assumed that insect sexes are genetically determined. In some insect species, however, sexes can be partially or completely reversed by non-genetic factors such as temperature. Notably, endosymbiotic microorganisms can affect the reproduction of their arthropod hosts in various ways, such as feminization or male killing. In two groups of lepidopteran insects (i.e., moths of the genus Ostrinia and the butterfly Eurema hecabe), it has recently been discovered that sex reversal from male to female can be caused by endosymbiotic bacteria of the genus Wolbachia. In this chapter, we briefly review the general mechanism of sex determination in insects, and then describe the Wolbachia-induced sex reversal found in these two groups of lepidopteran insects. We discuss the mechanistic bases and evolutionary implications of these phenomena and attempt to integrate our knowledge of male killing and feminization, which have been recognized as distinct phenomena caused by endosymbionts.

Accepted with minor revisions

The following paper has been accepted with minor revisions.

Narita S, Pereira RAS, Kjellberg F and Kageyama D* (2010) Gynandromorphs and intersexes: potential to understand the mechanism of sex determination in arthropods. Terrestrial Arthropod Reviews

Submitted a review paper on gynandromorphism

We have submitted a review paper on gynandromorphism in arthropods.

Narita S, Pereira RAS, Kjellberg F and Kageyama D* (2010) Gynandromorphs and intersexes: potential to understand the mechanism of sex determination in arthropods.

Published

Following article has been published (in Japanese):

陰山大輔・成田聡子（2009）チョウの生殖や行動を変える共生細菌ボルバキア．昆虫と自然10月号 p. 8-12. [Kageyama D & Narita S: Wolbachia endosymbionts that affect reproduction and behavior of butterflies. Nature & Insects, October, 2009]


This review article cites the following papers.

1. Kageyama D, Traut W (2004) Opposite sex-specific effects of Wolbachia and interference with sex determination of its host Ostrinia scapulalis. Proc R Soc Lond B 271: 251-258.
   
2. Veneti Z, Bentley JK, Koana T, Braig HR, Hurst GD (2005) A functional dosage compensation complex required for male killing in Drosophila. Science 307: 1461-1463.
   
3. Kageyama D, Anbutsu H, Shimada M, Fukatsu T (2007) Spiroplasma infection causes either early or late male killing in Drosophila, depending on maternal host age. Naturwissenschaften 94: 333-337.
   
4. Charlat S, Davies N, Roderick GK, Hurst GD (2007c) Disrupting the timing of Wolbachia-induced male-killing. Biol Lett 3: 154-156.
   
5. Jiggins FM, Hurst GD, Majerus ME (2000) Sex-ratio-distorting Wolbachia causes sex-role reversal in its butterfly host. Proc R Soc Lond B 267: 69-73.
   
6. Dyson EA, Kamath MK, Hurst GD (2002) Wolbachia infection associated with all-female broods in Hypolimnas bolina (Lepidoptera: Nymphalidae): evidence for horizontal transmission of a butterfly male killer. Heredity 88: 166-171.
   
7. Charlat S, Reuter M, Dyson EA, Hornett EA, Duplouy A, Davies N, Roderick GK, Wedell N, Hurst GD (2007b) Male-killing bacteria trigger a cycle of increasing male fatigue and female promiscuity. Curr Biol 17: 273-277.
   
8. Dyson EA, Hurst GD (2004) Persistence of an extreme sex-ratio bias in a natural population. Proc Natl Acad Sci USA 101: 6520-6523.
   
9. Charlat S, Hornett EA, Fullard JH, Davies N, Roderick GK, Wedell N, Hurst GD (2007a) Extraordinary flux in sex ratio. Science 317: 214.
   
10. Hornett EA, Charlat S, Duplouy AM, Davies N, Roderick GK, Wedell N, Hurst GD (2006) Evolution of male-killer suppression in a natural population. PLoS Biol 4: e283.
    
11. Hamilton WD (1967) Extraordinary sex ratios. Science 156: 477-488.
    
12. Hiroki M, Tagami Y, Miura K, Kato Y (2004) Multiple infection with Wolbachia inducing different reproductive manipulations in the butterfly Eurema hecabe. Proc R Soc Lond B 271: 1751-1755.
    
13. Narita S, Nomura M, Kageyama D (2007b) Naturally occurring single and double infection with Wolbachia strains in the butterfly Eurema hecabe: transmission efficiencies and population density dynamics of each Wolbachia strain. FEMS Microbiol Ecol 61: 235-245.
    
14. Hiroki M, Kato Y, Kamito T, Miura K (2002) Feminization of genetic males by a symbiotic bacterium in a butterfly, Eurema hecabe (Lepidoptera: Pieridae). Naturwissenschaften 89: 167-170.
    
15. Narita S, Kageyama D, Nomura M, Fukatsu T (2007a) Unexpected mechanism of symbiont-induced reversal of insect sex: feminizing Wolbachia continuously acts on the butterfly Eurema hecabe during larval development. Appl Environ Microbiol 73: 4332-4341.
    
16. Narita S, Kageyama D (2009) Wolbachia-induced sex reversal in Lepidoptera. Insect Symbiosis 3 (eds. Kostas Bourtzis and Thomas A. Miller), pp. 295-319, CRC Press, Boca Raton, FL, USA.
    

Published

Following paper has been published online:

Kageyama D, Narita S, Imamura T, Miyanoshita A (2009) Detection and identification of Wolbachia endosymbionts from laboratory stocks of stored-product insect pests and their parasitoids. Journal of Stored Products Research [published online]

Published

Following paper has been published online:

Nakamura Y, Kawai S, Yukuhiro F, Ito S, Gotoh T, Kisimoto R, Yanase T, Matsumoto Y, Kageyama D, Noda H (2009) Prevalence of symbiotic bacteria Cardinium in planthoppers (Insecta: Hemiptera) and spider mites (Arachnida: Acari) and proposal for taxonomic revision of a new Cardinium group from biting midges (Insecta: Diptera). Applied and Environmental Microbiology [published online]

Accepted!

Following paper has been accepted for publication in Applied and Environmental Microbiology.

Nakamura Y, Kawai S, Yukuhiro F, Ito S, Gotoh T, Kisimoto R, Yanase T, Matsumoto Y, Kageyama D, Noda H (2009) Prevalence of symbiotic bacteria Cardinium in planthoppers (Insecta: Hemiptera) and spider mites (Arachnida: Acari) and proposal for taxonomic revision of a new Cardinium group from biting midges (Insecta: Diptera). Applied and Environmental Microbiology [accepted]

「Entomological News」のEditorからgynandromorphに関する総説の執筆依頼がきました（共著）。締切日は未定。

「分子昆虫学－ポストゲノムの昆虫研究－」（神村学・日本典秀・葛西真治・竹内秀明・畠山正統・石橋純 編）共立出版

今月末に、出版されます。
この中の、5.2 共生微生物を執筆させていただきました。　

「昆虫と自然」に、解説記事の原稿を提出しました。成田氏との共著。今日が締切日でした。

Accepted!

論文が受理されました。

Kageyama D, Narita S, Imamura T, Miyanoshita A (2009) Detection and identification of Wolbachia endosymbionts from laboratory stocks of stored-product insect pests and their parasitoids. Journal of Stored Products Research [accepted]

共著者の一人として貢献した論文が、「Applied and Environmental Microbiology」に投稿されました。