The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.

<h4>Background</h4>Many extant male animals exhibit exaggerated body parts for display, defense or offence in sexual selection, such as male birds of paradise showing off colorful and elegant feathers and male moose and reindeers bearing large structured antlers. For insects, male rhinoc...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Qi Wang, Chungkun Shih, Dong Ren
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a52bc5f3fa7e40b8be479917ff330722
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a52bc5f3fa7e40b8be479917ff330722
record_format	dspace
spelling	oai:doaj.org-article:a52bc5f3fa7e40b8be479917ff3307222021-11-18T08:59:35ZThe earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.1932-620310.1371/journal.pone.0071378https://doaj.org/article/a52bc5f3fa7e40b8be479917ff3307222013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23977031/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Many extant male animals exhibit exaggerated body parts for display, defense or offence in sexual selection, such as male birds of paradise showing off colorful and elegant feathers and male moose and reindeers bearing large structured antlers. For insects, male rhinoceros and stag beetles have huge horn-like structure for fighting and competition and some male Leptopanorpa scorpionflies have very long abdominal terminal segments for sexual display and competition. Fossil records of insects having exaggerated body parts for sexual display are fairly rare. One example is two male holcorpids with elongate abdominal segments from sixth (A6) to eighth (A8) and enlarged male genitalia from Eocene, suggesting evolution of these characters occurred fairly late.<h4>Principal findings</h4>We document two mecopterans with exaggerated male body parts from the late Middle Jurassic Jiulongshan Formation in northeastern China. Both have extremely extended abdominal segments from A6 to A8 and enlarged genitalia, which might have been used for sexual display and, to less extent, for fighting with other males in the competition for mates. Although Fortiholcorpa paradoxa gen. et sp. nov. and Miriholcorpa forcipata gen. et sp. nov. seem to have affinities with Holcorpidae, we deem both as Family Incertae sedis mainly due to significant differences in branching pattern of Media (M) veins and relative length of A8 for F. paradoxa, and indiscernible preservation of 5-branched M veins in hind wing for M. forcipata.<h4>Conclusions/significance</h4>These two new taxa have extended the records of exaggerated male body parts of mecopterans for sexual display and/or selection from the Early Eocene to the late Middle Jurassic. The similar character present in some Leptopanorpa of Panorpidae suggests that the sexual display and/or sexual selection due to extremely elongated male abdominal and sexual organs outweigh the negative impact of bulky body and poor mobility in the evolutionary process.Qi WangChungkun ShihDong RenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 8, p e71378 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qi Wang Chungkun Shih Dong Ren The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.
description	<h4>Background</h4>Many extant male animals exhibit exaggerated body parts for display, defense or offence in sexual selection, such as male birds of paradise showing off colorful and elegant feathers and male moose and reindeers bearing large structured antlers. For insects, male rhinoceros and stag beetles have huge horn-like structure for fighting and competition and some male Leptopanorpa scorpionflies have very long abdominal terminal segments for sexual display and competition. Fossil records of insects having exaggerated body parts for sexual display are fairly rare. One example is two male holcorpids with elongate abdominal segments from sixth (A6) to eighth (A8) and enlarged male genitalia from Eocene, suggesting evolution of these characters occurred fairly late.<h4>Principal findings</h4>We document two mecopterans with exaggerated male body parts from the late Middle Jurassic Jiulongshan Formation in northeastern China. Both have extremely extended abdominal segments from A6 to A8 and enlarged genitalia, which might have been used for sexual display and, to less extent, for fighting with other males in the competition for mates. Although Fortiholcorpa paradoxa gen. et sp. nov. and Miriholcorpa forcipata gen. et sp. nov. seem to have affinities with Holcorpidae, we deem both as Family Incertae sedis mainly due to significant differences in branching pattern of Media (M) veins and relative length of A8 for F. paradoxa, and indiscernible preservation of 5-branched M veins in hind wing for M. forcipata.<h4>Conclusions/significance</h4>These two new taxa have extended the records of exaggerated male body parts of mecopterans for sexual display and/or selection from the Early Eocene to the late Middle Jurassic. The similar character present in some Leptopanorpa of Panorpidae suggests that the sexual display and/or sexual selection due to extremely elongated male abdominal and sexual organs outweigh the negative impact of bulky body and poor mobility in the evolutionary process.
format	article
author	Qi Wang Chungkun Shih Dong Ren
author_facet	Qi Wang Chungkun Shih Dong Ren
author_sort	Qi Wang
title	The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.
title_short	The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.
title_full	The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.
title_fullStr	The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.
title_full_unstemmed	The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.
title_sort	earliest case of extreme sexual display with exaggerated male organs by two middle jurassic mecopterans.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/a52bc5f3fa7e40b8be479917ff330722
work_keys_str_mv	AT qiwang theearliestcaseofextremesexualdisplaywithexaggeratedmaleorgansbytwomiddlejurassicmecopterans AT chungkunshih theearliestcaseofextremesexualdisplaywithexaggeratedmaleorgansbytwomiddlejurassicmecopterans AT dongren theearliestcaseofextremesexualdisplaywithexaggeratedmaleorgansbytwomiddlejurassicmecopterans AT qiwang earliestcaseofextremesexualdisplaywithexaggeratedmaleorgansbytwomiddlejurassicmecopterans AT chungkunshih earliestcaseofextremesexualdisplaywithexaggeratedmaleorgansbytwomiddlejurassicmecopterans AT dongren earliestcaseofextremesexualdisplaywithexaggeratedmaleorgansbytwomiddlejurassicmecopterans
_version_	1718421101616300032

The earliest case of extreme sexual display with exaggerated male organs by two Middle Jurassic mecopterans.

Ejemplares similares