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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Mechanisms regulating functional monogyny in a Japanese population of Leptothorax acervorum (Hymenoptera, Formicidae): dominance hierarchy and preferential egg cannibalism

F Ito (2005)

Mechanisms regulating functional monogyny in a Japanese population of Leptothorax acervorum (Hymenoptera, Formicidae): dominance hierarchy and preferential egg cannibalism

BELGIAN JOURNAL OF ZOOLOGY, 135(1):3-8.

Queen behaviour of Leptothorax acervorum collected in northern Japan was observed in four functionally monogynous colonies (one functional mated egg-laying queen with some supernumerary mated but sterile queens) and two monogynous colonies with some virgin queens. In three functionally monogynous colonies, dominance behaviour including antennation, biting, pulling, and remarkable avoidance where queens fled approaching the functional queens, were frequently observed among queens. In two of the three colonies, an almost linear dominance hierarchy was established among queens and only the top ranked queen laid eggs. However, the hierarchy was not stable : in one colony the queens in second and third ranks and the second ranked queen in the other colony were expelled from colonies. Such queen antagonism was very rare in the other functionally monogynous colony, where workers expelled the fertile queen, and the other queen replaced the egg-layer. In monogynous colonies with virgin queens, virgin queens showed worker-like behaviour, and dominance interactions completely lacked among queens. Oophagy was often observed among nestmates : this always Occurred just after oviposition. Eggs of functional queens were not eaten while most eggs laid by Supernumerary queens were eaten by functional queens and workers. Supernumerary queens never showed oophagy. Workers laid trophic eggs and reproductive eggs : the former ones were always eaten while one third of the latter survived.

dominance hierarchy; ants; functional monogyny; oophagy
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
1903-1923
​Annales de la Société royale malacologique et zoologique de Belgique
 
1923-1989
Annales de la Société Royale Zoologique de Belgique
 
1989-
Belgian Journal of Zoology