HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >

Group-housed females promote production of asexual ootheca in American cockroaches

This item is licensed under:Creative Commons Attribution 4.0 International

Files in This Item:
Katoh et al., 2017.pdf1.64 MBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Group-housed females promote production of asexual ootheca in American cockroaches
Authors: Katoh, Ko Browse this author
Iwasaki, Masazumi Browse this author
Hosono, Shouhei Browse this author
Yoritsune, Atsushi Browse this author
Ochiai, Masanori Browse this author →KAKEN DB
Mizunami, Makoto Browse this author →KAKEN DB
Nishino, Hiroshi Browse this author →KAKEN DB
Keywords: Cockroaches
Sexual reproduction
group effect
Sex pheromone
Chemosensory signal
Issue Date: 13-Mar-2017
Publisher: BioMed Central
Journal Title: Zoological Letters
Volume: 3
Issue: 3
Start Page: 1
End Page: 9
Publisher DOI: 10.1186/s40851-017-0063-x
Abstract: Background: Facultative parthenogenesis, seen in many animal phyla, is a reproductive strategy in which females are able to generate offspring when mating partners are unavailable. In some subsocial and eusocial insects, parthenogenesis is often more prevalent than sexual reproduction. However, little is known about how social cooperation is linked to the promotion of parthenogenesis. The domiciliary cockroach Periplaneta americana is well-suited to addressing this issue as this species belongs to the superfamily Blattoidea, which diverged into eusocial termites and shows facultative parthenogenesis. Results: We studied environmental factors that influence asexual production of ootheca using behavioral assays in P. americana. When more than three virgin females immediately after the imaginal molt were kept together in a small sealed container, they tended to produce egg cases (oothecae) via parthenogenesis earlier than did isolated females, resulting in apparent synchronization of ootheca production, even among females housed in different containers. In contrast, virgin females housed with genitalia-ablated males or group-housed females with antennae ablated did not significantly promote ootheca production compared to isolated females. Daily addition of the primary sex pheromone component to the container did not promote ootheca production in isolated females. Another line of study showed that grouped females make parthenogenesis more sustainable than previously known; a founder colony of 15 virgin females was sufficient to produce female progeny for a period of more than three years. Conclusions: Group-housed females promote and stabilize asexual ootheca production compared to isolated females, and that this promotion is triggered by female-specific chemosensory signals (other than sex pheromone) primarily detected by antennae. Promotion of ootheca production between females is likely to be an early stage of social cooperation, reminiscent of the foundation and maintenance of a colony by female pairs in the eusocial termite Reticulitermes speratus.
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 西野 浩史

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University