Factors affecting the proportion of soldiers in eusocial bamboo aphid,<i>Pseudoregma bambucicola</i>, colonies

Ito, Yasuaki; Tanaka, Sayumi; Yukawa, Junichi; Tsuji, Kazuki

doi:10.1080/08927014.1995.9522941

Cited by 20 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present study demonstrated that colony size and soldier proportion in P. bambucicola colonies abruptly increased in autumn, had a peak from October to November, and thereafter decreased to minimum in early summer, as reported by Sunose et al (1991). This idea is corroborated by and Itô et al (1995), who observed a positive correlation between colony size and soldier proportion in P. bambucicola. Previous studies (Shibao, 1998;H.…”

Section: Discussionsupporting

confidence: 58%

Reproductive schedule and factors affecting soldier production in the eusocial bamboo aphid Pseudoregma bambucicola (Homoptera, Aphididae)

Shibao¹

1999

Insectes Sociaux

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 58%

Reproductive schedule and factors affecting soldier production in the eusocial bamboo aphid Pseudoregma bambucicola (Homoptera, Aphididae)

Shibao¹

1999

Insectes Sociaux

View full text Add to dashboard Cite

“…For example, P. bambucicola produces soldiers on the secondary host only during certain times of the year, even though colonies can be found on the secondary host throughout the year. Several investigators have measured the proportions of soldiers in these colonies in attempts to determine the causes of soldier production (Sakata and Itô, 1991;Sunose et al, 1991;Itô et al, 1995;Tanaka and Itô, 1995). However, it is possible that colonies without dimorphic larvae also display defensive behavior and this possibility will obfuscate any possible links between soldiers and environmental factors if only morphology is measured.…”

Section: Discussionmentioning

confidence: 99%

Behavior and morphology of monomorphic soldiers from the aphid genus Pseudoregma (Cerataphidini, Hormaphididae): implications for the evolution of morphological castes in social aphids

1997

View full text Add to dashboard Cite

Soldier-producing aphids have evolved at least nine separate times. The larvae of soldier-producing species can be organized into three general categories: monomorphic larvae, dimorphic larvae with a reproductive soldier caste, and dimorphic larvae with a sterile soldier caste. Here we report the discovery of a novel soldier type in an undescribed species of Pseudoregma that is morphologically similar to P. bambucicola. A colony of this species produced morphologically monomorphic first-instar larvae with a defensive behavioral dimorphism. These larvae attacked natural predators, and larval response to a simple assay, placing the tips of forceps in front of larvae, was correlated with this attacking behavior. Approximately one third of the first-instar larvae in the colony attacked and this proportion was uncorrelated with the time of day, the ambient temperature, or the diel migratory behavior of the aphids. Migrating larvae rarely attacked. Attacking behavior was correlated with another defensive behavior, hind-leg waving. Attackers were more likely to possess the next-instar skin, suggesting that they were older than non-attackers. This is the first example of a possible within-instar age polyethism in soldier-producing aphids. Canonical variates analysis of seven morphological measurements failed to discriminate between attacking and non-attacking larvae. The monomorphic larvae share some morphometric characteristics in common with the soldiers of P. bambucicola and other characteristics in common with normal larvae. We discuss these results with respect to the evolution and loss of soldier castes in the tribe Cerataphidini.

show abstract

“…Itô et al (1995) mention that they found some colonies of P. bambuBecause the second term of the right side of inequality (2) becomes zero when n > N p , inequality (5b) can be replaced by the simpler inequality…”

Section: Number Of Soldiers Depends Not Only On Colony Size But Also mentioning

confidence: 99%

Logistic model for soldier production in aphids

Aoki

Kurosu

2003

Insect. soc.

View full text Add to dashboard Cite

The number of aphid soldiers in a colony is positively correlated with colony size. This positive correlation has been repeatedly confirmed for the bamboo aphid Pseudoregma bambucicola. To explain this, we present a simple model assuming logistic growth of the aphid colony. The model predicts that a first soldier is more readily produced in large colonies than in small colonies. This is because the productivity of each reproductive decreases as the colony size increases, and also because the efficiency of defense increases as the number of reproductives defended by the soldier increases. The latter effect disappears when the number of reproductives exceeds N p , the critical number of reproductives that a predator could damage. This argument holds for a second, a third, and an ith soldier in general. Although we assume logistic growth of the aphid colony, the model is applicable to any form of colony growth with minor changes of some premises.

show abstract

Factors affecting the proportion of soldiers in eusocial bamboo aphid,Pseudoregma bambucicola, colonies

Cited by 20 publications

References 6 publications

Reproductive schedule and factors affecting soldier production in the eusocial bamboo aphid Pseudoregma bambucicola (Homoptera, Aphididae)

Reproductive schedule and factors affecting soldier production in the eusocial bamboo aphid Pseudoregma bambucicola (Homoptera, Aphididae)

Behavior and morphology of monomorphic soldiers from the aphid genus Pseudoregma (Cerataphidini, Hormaphididae): implications for the evolution of morphological castes in social aphids

Logistic model for soldier production in aphids

Contact Info

Product

Resources

About