Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).

We report comprehensive evidence for obligatory thelytokous parthenogenesis in an ant Monomorium triviale. This species is characterized by distinct queen-worker dimorphism with strict reproductive division of labor: queens produce both workers and new queens without mating, whereas workers are comp...

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Main Authors: Naoto Idogawa, Tomonori Sasaki, Kazuki Tsuji, Shigeto Dobata
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2021-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0246710
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author Naoto Idogawa
Tomonori Sasaki
Kazuki Tsuji
Shigeto Dobata
author_facet Naoto Idogawa
Tomonori Sasaki
Kazuki Tsuji
Shigeto Dobata
author_sort Naoto Idogawa
collection DOAJ
description We report comprehensive evidence for obligatory thelytokous parthenogenesis in an ant Monomorium triviale. This species is characterized by distinct queen-worker dimorphism with strict reproductive division of labor: queens produce both workers and new queens without mating, whereas workers are completely sterile. We collected 333 nests of this species from 14 localities and three laboratory-reared populations in Japan. All wild queens dissected had no sperm in their spermathecae. Laboratory observation confirmed that virgin queens produced workers without mating. Furthermore, microsatellite genotyping showed identical heterozygous genotypes between mothers and their respective daughters, suggesting an extremely low probability of sexual reproduction. Microbial analysis detected no bacterial genera that are known to induce thelytokous parthenogenesis in Hymenoptera. Finally, the lack of variation in partial sequences of mitochondrial DNA among individuals sampled from across Japan suggests recent rapid spread or selective sweep. M. triviale would be a promising model system of superorganism-like adaptation through comparative analysis with well-studied sexual congeners, including the pharaoh ant M. pharaonis.
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spelling doaj.art-c0cab65f21b646d187ffca103d0b3cac2022-12-21T23:08:27ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01164e024671010.1371/journal.pone.0246710Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).Naoto IdogawaTomonori SasakiKazuki TsujiShigeto DobataWe report comprehensive evidence for obligatory thelytokous parthenogenesis in an ant Monomorium triviale. This species is characterized by distinct queen-worker dimorphism with strict reproductive division of labor: queens produce both workers and new queens without mating, whereas workers are completely sterile. We collected 333 nests of this species from 14 localities and three laboratory-reared populations in Japan. All wild queens dissected had no sperm in their spermathecae. Laboratory observation confirmed that virgin queens produced workers without mating. Furthermore, microsatellite genotyping showed identical heterozygous genotypes between mothers and their respective daughters, suggesting an extremely low probability of sexual reproduction. Microbial analysis detected no bacterial genera that are known to induce thelytokous parthenogenesis in Hymenoptera. Finally, the lack of variation in partial sequences of mitochondrial DNA among individuals sampled from across Japan suggests recent rapid spread or selective sweep. M. triviale would be a promising model system of superorganism-like adaptation through comparative analysis with well-studied sexual congeners, including the pharaoh ant M. pharaonis.https://doi.org/10.1371/journal.pone.0246710
spellingShingle Naoto Idogawa
Tomonori Sasaki
Kazuki Tsuji
Shigeto Dobata
Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).
PLoS ONE
title Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).
title_full Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).
title_fullStr Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).
title_full_unstemmed Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).
title_short Comprehensive analysis of male-free reproduction in Monomorium triviale (Formicidae: Myrmicinae).
title_sort comprehensive analysis of male free reproduction in monomorium triviale formicidae myrmicinae
url https://doi.org/10.1371/journal.pone.0246710
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