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Maternal-care behaviour in Adomerus variegatus (Hemiptera: Cydnidae)

Published online by Cambridge University Press:  02 April 2012

Hiromi Mukai ,
Mantaro Hironaka ,
Narumi Baba ,
Takao Yanagi ,
Koichi Inadomi ,
Lisa Filippi  and
Shintaro Nomakuchi
Hiromi Mukai*
Affiliation:
Department of Applied Biological Sciences, Faculty of Agriculture, Saga University, Honjo 1, Saga 840-8502, Japan
Mantaro Hironaka
Affiliation:
Department of Biology, Faculty of Medicine, Hamamatsu University School of Medicine, Handayama 1-20-1, Hamamatsu, Shizuoka 431-3192, Japan
Narumi Baba
Affiliation:
Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
Takao Yanagi
Affiliation:
Department of Applied Biological Sciences, Faculty of Agriculture, Saga University, Honjo 1, Saga 840-8502, Japan
Koichi Inadomi
Affiliation:
Department of Applied Biological Sciences, Faculty of Agriculture, Saga University, Honjo 1, Saga 840-8502, Japan
Lisa Filippi
Affiliation:
Department of Biology, Hofstra University, Hempstead, New York 11549, United States of America
Shintaro Nomakuchi
Affiliation:
Department of Applied Biological Sciences, Faculty of Agriculture, Saga University, Honjo 1, Saga 840-8502, Japan
*
1 Corresponding author (e-mail: 09552203@edu.cc.saga-u.ac.jp).
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Abstract

Subsociality involving provisioning for offspring has been reported for one shield bug and three burrower bug species (Hemiptera: Pentatomoidea: Parastrachiidae and Cydnidae: Sehirinae). We present the first report of subsocial behaviour in the burrower bug Adomerus variegatus (Signoret), focusing on manifestations of maternal care, specifically the production of trophic eggs, guarding of offspring, and progressive provisioning. In our study, each female produced an egg mass that included some trophic eggs. Prior to nymphal hatch, females remained in their nests and showed egg mass guarding behaviour. Mothers started provisioning behaviour a few hours after nymphal hatch. Each mother dragged a seed (larger than her body) with her proboscis to the nest as food for the nymphs. These findings suggest that A. variegatus shows maternal-care behaviours similar to those reported in some other pentatomoid species and that trophic egg production and nest provisioning have evolved as interrelated processes.

Résumé

On a signalé de la subsocialité comprenant de l'approvisionnement des rejetons chez une espèce de punaises à écusson et trois espèces de punaises fouisseuses (Heteroptera: Pentatomoidea: Parastrachiidae et Cydnidae: Sehirinae). Nous fournissons une première attestation d'un comportement subsocial chez la punaise fouisseuse Adomerus variegatus (Signoret), nous intéressant surtout aux manifestations des soins maternels, en particulier la production d'œufs trophiques, la surveillance des petits et l'approvisionnement progressif. Dans notre étude, les masses d'œufs de chaque femelle d'A. variegatus contiennent quelques œufs trophiques. Avant l'éclosion des larves, les femelles demeurent au nid et ont un comportement de garde de la masse d'œufs. Les mères commencent leur comportement d'approvisionnement quelques heures après l'éclosion des larves. Chaque mère traîne vers le nid une graine (plus grande que son propre corps) avec son rostre comme nourriture pour les larves. Ces observations indiquent qu’A. variegatus possède des comportements de soins maternels semblables à ceux signalés chez d'autres espèces de pentatomoïdes et que les patrons de production d'œufs trophiques et d'approvisionnement au nid se sont développés comme des mécanismes associés.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 142 , Issue 1 , February 2010 , pp. 52 - 56
Copyright
Copyright © Entomological Society of Canada 2010

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