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Aphid Soldier Differentiation: Density Acts on Both Embryos and Newborn Nymphs

Die Naturwissenschaften, 2003
The mechanism of caste differentiation in a social aphid Tuberaphis styraci, which has a sterile soldier caste in the 2nd instar, was investigated using an artificial diet rearing system. High aphid density induced soldier production. Combinatorial prenatal and postnatal density treatments revealed that (1) either prenatal high density or postnatal ...
Takema Fukatsu   +2 more
exaly   +5 more sources

Termite Soldier Differentiation in Incipient Colonies Is Related to Parental Proctodeal Trophallactic Behavior.

Zoological Science, 2012
Termite soldiers represent a peculiar caste among social insects in terms of their specific defensive roles. Numbers of soldiers are relatively low in a mature colony, and it is impossible to identify the individuals that will differentiate into soldiers.
Kiyoto Maekawa, Dai Watanabe
exaly   +3 more sources

The making of the defensive caste: Physiology, development, and evolution of the soldier differentiation in termites

Evolution & Development, 2020
AbstractTermites (Blattodea, Termitoidea, or Isoptera) constitute one of the major lineages of eusocial insects. In termite societies, multiple types of functional individuals, that is, castes, perform divisions of labors to coordinate social behaviors. Among other castes, the soldier caste is distinctive since it is sterile and exclusively specialized
Toru Miura, Kiyoto Maekawa
openaire   +2 more sources

Differentiating Good Soldiers from Good Actors*

Journal of Management Studies, 2007
abstract  In a qualitative interview study, 20 Hong Kong Chinese informants were asked to report stories about colleagues who were either ‘good soldiers’ or ‘good actors’. In stories about good soldiers, informants attributed their colleagues' organizational citizenship behaviour (OCB) primarily to prosocial or pro‐organizational motives.
Robin S. Snell, Yuk Lan Wong
openaire   +1 more source

Caste‐specific microRNA expression in termites: insights into soldier differentiation

Insect Molecular Biology, 2018
Abstract Eusocial insects have polyphenic caste systems in which each caste exhibits characteristic morphology and behaviour. In insects, caste systems arose independently in different lineages, such as Isoptera and Hymenoptera.
M, Matsunami   +8 more
openaire   +2 more sources

Soldier Presence Suppresses Presoldier Differentiation Through a Rapid Decrease of JH in the Termite Reticulitermes speratus

Journal of Insect Physiology, 2011
The regulation of caste differentiation is essential to insect eusociality. Termite soldiers are sterile and cannot eat by themselves because they have specialized mouth morphology. Almost all termite species have a soldier caste, and the soldier ratio per colony is maintained at a low level, probably by elaborate regulatory mechanisms.
Hiroki Gotoh, Kiyoto Maekawa, Toru Miura
exaly   +3 more sources

Environmental influence on soldier differentiation inCoptotermes formosanus Shiraki (Rhinotermitidae)

Insectes Sociaux, 1988
Termite soldiers are produced only in warm seasons in many species, and soldier ratios have been reported to vary seasonally in both lower and higher termites. Environmental parameters that may stimulate seasonal soldier production include temperature and diet.
D. A. Waller, J. P. La Fage
openaire   +1 more source

Sexual Difference in Juvenile-Hormone Titer in Workers Leads to Sex-Biased Soldier Differentiation in Termites

Journal of Insect Physiology, 2016
In termites, the soldier caste, with its specialized defensive morphology, is one of the most important characteristics for sociality. Most of the basal termite species have both male and female soldiers, and the soldier sex ratio is almost equal or only slightly biased.
Kouhei Toga, Kiyoto Maekawa, Toru Miura
exaly   +3 more sources

Histone modifying genes are involved in the molting period during soldier differentiation in Zootermopsis nevadensis

Journal of Insect Physiology, 2019
Caste differentiation in eusocial insects is an outstanding example of phenotypic plasticity. Recent studies indicate that epigenetic regulation, including DNA methylation and histone modification, play a role in the morphological and behavioral polyphenism observed in the caste differentiation of hymenopteran insects. The role of epigenetic regulation
Ryutaro, Suzuki   +2 more
openaire   +2 more sources

Endocrine Control of Cuticular Hydrocarbon Profiles During Worker-to-Soldier Differentiation in the Termite Reticulitermes Flavipes

Journal of Insect Physiology, 2014
The social organization of termites, unlike that of other social insects, is characterized by a highly plastic caste system. With the exception of the alates, all other individuals in a colony remain at an immature stage of development. Workers in particular remain developmentally flexible; they can switch castes to become soldiers or neotenics ...
Eric Darrouzet, Elfie Perdereau
exaly   +3 more sources

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