Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.

<h4>Background</h4>Ergonomic efficiency is in termites maximized by task partitioning among specialized castes. The isopteran caste systems can be classified as either (i) linear, when tasks are performed by pluripotent immatures (pseudergates), retaining the ability to develop into wing...

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Autores principales: Thomas Bourguignon, Jan Šobotník, David Sillam-Dussès, Pavel Jiroš, Robert Hanus, Yves Roisin, Toru Miura
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Publicado: Public Library of Science (PLoS) 2012
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spelling oai:doaj.org-article:c44cf096461e4f6c9e334400edc8d5a12021-11-18T07:05:25ZDevelopmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.1932-620310.1371/journal.pone.0044527https://doaj.org/article/c44cf096461e4f6c9e334400edc8d5a12012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23028554/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Ergonomic efficiency is in termites maximized by task partitioning among specialized castes. The isopteran caste systems can be classified as either (i) linear, when tasks are performed by pluripotent immatures (pseudergates), retaining the ability to develop into winged imagoes or (ii) bifurcated, with the presence of a true worker caste, which diverges early and permanently from the sexual (nymph/alate) line.<h4>Principal findings</h4>Here, we report on the ontogenetic potentialities of the highly polymorphic sand termite Psammotermes hybostoma. Beside numerous pluripotent pseudergates, constituting the main work force, some larger non-feeding apterous immatures, also occur. These individuals are unable to proceed to the winged imago stage, but store large amounts of fat and also give rise to large soldiers. Soldiers therefore originate from a wide range of apterous instars, consequently being highly polymorphic.<h4>Conclusions</h4>The caste system of P. hybostoma is essentially linear, as in other basal Rhinotermitidae, but is distinguished by the late bifurcation leading to large apterous immatures. Because these large worker-like individuals deviate late and do not perform worker tasks, they cannot be considered homologous to the true workers of Termitidae and advanced Rhinotermitidae, but they provide a novel example of the evolution of sterile immatures in termites.Thomas BourguignonJan ŠobotníkDavid Sillam-DussèsPavel JirošRobert HanusYves RoisinToru MiuraPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 9, p e44527 (2012)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Thomas Bourguignon
Jan Šobotník
David Sillam-Dussès
Pavel Jiroš
Robert Hanus
Yves Roisin
Toru Miura
Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.
description <h4>Background</h4>Ergonomic efficiency is in termites maximized by task partitioning among specialized castes. The isopteran caste systems can be classified as either (i) linear, when tasks are performed by pluripotent immatures (pseudergates), retaining the ability to develop into winged imagoes or (ii) bifurcated, with the presence of a true worker caste, which diverges early and permanently from the sexual (nymph/alate) line.<h4>Principal findings</h4>Here, we report on the ontogenetic potentialities of the highly polymorphic sand termite Psammotermes hybostoma. Beside numerous pluripotent pseudergates, constituting the main work force, some larger non-feeding apterous immatures, also occur. These individuals are unable to proceed to the winged imago stage, but store large amounts of fat and also give rise to large soldiers. Soldiers therefore originate from a wide range of apterous instars, consequently being highly polymorphic.<h4>Conclusions</h4>The caste system of P. hybostoma is essentially linear, as in other basal Rhinotermitidae, but is distinguished by the late bifurcation leading to large apterous immatures. Because these large worker-like individuals deviate late and do not perform worker tasks, they cannot be considered homologous to the true workers of Termitidae and advanced Rhinotermitidae, but they provide a novel example of the evolution of sterile immatures in termites.
format article
author Thomas Bourguignon
Jan Šobotník
David Sillam-Dussès
Pavel Jiroš
Robert Hanus
Yves Roisin
Toru Miura
author_facet Thomas Bourguignon
Jan Šobotník
David Sillam-Dussès
Pavel Jiroš
Robert Hanus
Yves Roisin
Toru Miura
author_sort Thomas Bourguignon
title Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.
title_short Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.
title_full Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.
title_fullStr Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.
title_full_unstemmed Developmental pathways of Psammotermes hybostoma (Isoptera: Rhinotermitidae): old pseudergates make up a new sterile caste.
title_sort developmental pathways of psammotermes hybostoma (isoptera: rhinotermitidae): old pseudergates make up a new sterile caste.
publisher Public Library of Science (PLoS)
publishDate 2012
url https://doaj.org/article/c44cf096461e4f6c9e334400edc8d5a1
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