Abstract
Ant crickets (Orthoptera, Myrmecophilidae) are typical ant guests that obtain nourishment from the ants in their nests. Some ant crickets are host-specific, whereas other species are host-generalists. We investigated the behavioral polarization between the specialist cricket Myrmecophilus albicinctus and generalist Myrmecophilus formosanus. In the field, M. albicinctus was found exclusively in nests of Anoplolepis gracilipes (185/185), whereas 62 M. formosanus were found in nests of 9 ant species from 3 subfamilies. Behavioral observations revealed that M. albicinctus could not survive in the absence of A. gracilipes and was killed when it was introduced into colonies of non-host ant species. In addition, M. albicinctus showed intimate behavior, such as trophallaxis, with its host. In contrast, M. formosanus swiftly avoided frequent attacks by host ants, independently took food, and survived well in the absence of ants. Overall, the specialist adapted its behavior and physiology to those of a specific ant host, whereas the generalist adopted versatile parasitic behaviors, such as quick movements. Our findings revealed interspecific polarization in the degree of host dependence and inquiline-host interaction, and they indicate that trade-offs occur between specialization to specific hosts and retention of generalization in order to exploit alternative hosts.
| Original language | English |
|---|---|
| Pages (from-to) | 389-396 |
| Number of pages | 8 |
| Journal | Insectes Sociaux |
| Volume | 56 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Oct 1 2009 |
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All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
- Insect Science
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Behavioral differences between two ant cricket species in nansei islands : Host-specialist versus host-generalist. / Komatsu, Takashi; Maruyama, Munetoshi; Itino, T.
In: Insectes Sociaux, Vol. 56, No. 4, 01.10.2009, p. 389-396.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Behavioral differences between two ant cricket species in nansei islands
T2 - Host-specialist versus host-generalist
AU - Komatsu, Takashi
AU - Maruyama, Munetoshi
AU - Itino, T.
PY - 2009/10/1
Y1 - 2009/10/1
N2 - Ant crickets (Orthoptera, Myrmecophilidae) are typical ant guests that obtain nourishment from the ants in their nests. Some ant crickets are host-specific, whereas other species are host-generalists. We investigated the behavioral polarization between the specialist cricket Myrmecophilus albicinctus and generalist Myrmecophilus formosanus. In the field, M. albicinctus was found exclusively in nests of Anoplolepis gracilipes (185/185), whereas 62 M. formosanus were found in nests of 9 ant species from 3 subfamilies. Behavioral observations revealed that M. albicinctus could not survive in the absence of A. gracilipes and was killed when it was introduced into colonies of non-host ant species. In addition, M. albicinctus showed intimate behavior, such as trophallaxis, with its host. In contrast, M. formosanus swiftly avoided frequent attacks by host ants, independently took food, and survived well in the absence of ants. Overall, the specialist adapted its behavior and physiology to those of a specific ant host, whereas the generalist adopted versatile parasitic behaviors, such as quick movements. Our findings revealed interspecific polarization in the degree of host dependence and inquiline-host interaction, and they indicate that trade-offs occur between specialization to specific hosts and retention of generalization in order to exploit alternative hosts.
AB - Ant crickets (Orthoptera, Myrmecophilidae) are typical ant guests that obtain nourishment from the ants in their nests. Some ant crickets are host-specific, whereas other species are host-generalists. We investigated the behavioral polarization between the specialist cricket Myrmecophilus albicinctus and generalist Myrmecophilus formosanus. In the field, M. albicinctus was found exclusively in nests of Anoplolepis gracilipes (185/185), whereas 62 M. formosanus were found in nests of 9 ant species from 3 subfamilies. Behavioral observations revealed that M. albicinctus could not survive in the absence of A. gracilipes and was killed when it was introduced into colonies of non-host ant species. In addition, M. albicinctus showed intimate behavior, such as trophallaxis, with its host. In contrast, M. formosanus swiftly avoided frequent attacks by host ants, independently took food, and survived well in the absence of ants. Overall, the specialist adapted its behavior and physiology to those of a specific ant host, whereas the generalist adopted versatile parasitic behaviors, such as quick movements. Our findings revealed interspecific polarization in the degree of host dependence and inquiline-host interaction, and they indicate that trade-offs occur between specialization to specific hosts and retention of generalization in order to exploit alternative hosts.
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UR - http://www.scopus.com/inward/citedby.url?scp=70350378440&partnerID=8YFLogxK
U2 - 10.1007/s00040-009-0036-y
DO - 10.1007/s00040-009-0036-y
M3 - Article
AN - SCOPUS:70350378440
VL - 56
SP - 389
EP - 396
JO - Insectes Sociaux
JF - Insectes Sociaux
SN - 0020-1812
IS - 4
ER -