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Non-sexual abdominal appendages in adult insects challenge a 300 million year old bauplan

  • Despite their enormous diversity, the bauplan of adult winged insects (pterygotes) is remarkably conservative since the Lower Devonian: a five-segmented head, a three-segmented thorax with three pairs of walking legs and an eleven-segmented abdomen without any non-sexual appendages 1 and 2. The only known exceptions are the abdominal appendages of adult male sepsid flies on the fourth segment; however, these are also used as copulatory organs and are supposedly maintained through sexual selection [3]. Here, we report a rod-like paired appendage from the third and fourth abdominal segments in adults of the Southeast-Asian Hemiptera taxon Bennini (Figure 1A,B; Supplemental information). These are fully musculated, innervated, and movable and bear highly organized sensory and secretory units. The appendages, termed LASSO (lateral abdominal sensory and secretory organs), are consistent in topology and structure in all species studied and not sexually dimorphic. The existence of theseDespite their enormous diversity, the bauplan of adult winged insects (pterygotes) is remarkably conservative since the Lower Devonian: a five-segmented head, a three-segmented thorax with three pairs of walking legs and an eleven-segmented abdomen without any non-sexual appendages 1 and 2. The only known exceptions are the abdominal appendages of adult male sepsid flies on the fourth segment; however, these are also used as copulatory organs and are supposedly maintained through sexual selection [3]. Here, we report a rod-like paired appendage from the third and fourth abdominal segments in adults of the Southeast-Asian Hemiptera taxon Bennini (Figure 1A,B; Supplemental information). These are fully musculated, innervated, and movable and bear highly organized sensory and secretory units. The appendages, termed LASSO (lateral abdominal sensory and secretory organs), are consistent in topology and structure in all species studied and not sexually dimorphic. The existence of these non-sexual abdominal appendages reveals the potential of the 300 million year old conserved bauplan of insects.zeige mehrzeige weniger

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Metadaten
Autor*innen:H. Hoch, A. Wessel, M. Asche, D. Baum, F. Beckmann, P. Bräunig, Karsten Ehrig, R. Mühlethaler, Heinrich Riesemeier, Andreas Staude, B. Stelbrink, E. Wachmann, P. Weintraub, B. Wipfler, C. Wolff, M. Zilch
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Current biology
Jahr der Erstveröffentlichung:2014
Verlag:Cell Press
Verlagsort:Cambridge, Mass.
Jahrgang/Band:24
Ausgabe/Heft:1
Erste Seite:R16
Letzte Seite:R17
Freie Schlagwörter:Abdominal appendages; Adult insects; Bauplan; CT
DOI:10.1016/j.cub.2013.11.040
ISSN:0960-9822
ISSN:1879-0445
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:23.01.2014
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