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Secondary queens in the parthenogenetic termite Cavitermes tuberosus develop through a transitional helper stage
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SYSNO ASEP 0482239 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Secondary queens in the parthenogenetic termite Cavitermes tuberosus develop through a transitional helper stage Author(s) Hellemans, S. (BE)
Fournier, D. (BE)
Hanus, Robert (UOCHB-X) RID, ORCID
Roisin, Y. (BE)Source Title Evolution & Development - ISSN 1520-541X
Roč. 19, č. 6 (2017), s. 253-262Number of pages 10 s. Language eng - English Country US - United States Keywords facultative parthenogenesis ; replacement queens ; termites ; asexual queen succession ; ontogeny ; Cavitermes Subject RIV EG - Zoology OECD category Developmental biology Institutional support UOCHB-X - RVO:61388963 UT WOS 000414720400003 EID SCOPUS 85033378899 DOI 10.1111/ede.12240 Annotation In termite species with asexual queen succession (AQS), parthenogenetically produced immatures mostly differentiate into secondary queens, called neotenics. In order to elucidate the ontogenetic origin of neotenics in Cavitermes tuberosus (Termitidae: Termitinae), a neotropical termite with AQS, we investigated developmental pathways of offspring according to their sex and genetic origin using both morphometric and genetic tools. The caste system of C. tuberosus follows the classical pathway of Termitidae. After the first larval instar, there is a bifurcation between two developmental lines. The apterous line is composed of a second larval instar, several worker instars, presoldiers, and soldiers. Workers display a consistent male bias and soldiers are female-only. The nymphal line is composed of five nymphal instars and the imago stage. We highlight that neotenic queens derive from third and fourth instar nymphs displaying peculiar morphological traits, here termed aspirants, most of which are produced by parthenogenesis. Aspirants are present in all nests and perform worker tasks while waiting for the queen's death to differentiate into neotenic queens. Aspirants can successfully be used to demonstrate the occurrence of parthenogenesis in termite species whose reproductive cores are difficult to access. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Year of Publishing 2018
Number of the records: 1