Universität zu Köln

Yoshizawa, Kazunori ORCID: 0000-0001-6170-4296, Kamimura, Yoshitaka, Lienhard, Charles, Ferreira, Rodrigo L. and Blanke, Alexander ORCID: 0000-0003-4385-6039 (2018). A biological switching valve evolved in the female of a sex-role reversed cave insect to receive multiple seminal packages. eLife, 7. CAMBRIDGE: ELIFE SCIENCES PUBLICATIONS LTD. ISSN 2050-084X

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Abstract

We report a functional switching valve within the female genitalia of the Brazilian cave insect Neotrogla. The valve complex is composed of two plate-like sclerites, a closure element, and in-and-outflow canals. Females have a penis-like intromittent organ to coercively anchor males and obtain voluminous semen. The semen is packed in a capsule, whose formation is initiated by seminal injection. It is not only used for fertilization but also consumed by the female as nutrition. The valve complex has two slots for insemination so that Neotrogla can continue mating while the first slot is occupied. In conjunction with the female penis, this switching valve is a morphological novelty enabling females to compete for seminal gifts in their nutrient-poor cave habitats through long copulation times and multiple seminal injections. The evolution of this switching valve may have been a prerequisite for the reversal of the intromittent organ in Neotrogla.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Yoshizawa, Kazunori UNSPECIFIED orcid.org/0000-0001-6170-4296 UNSPECIFIED Kamimura, Yoshitaka UNSPECIFIED UNSPECIFIED UNSPECIFIED Lienhard, Charles UNSPECIFIED UNSPECIFIED UNSPECIFIED Ferreira, Rodrigo L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Blanke, Alexander UNSPECIFIED orcid.org/0000-0003-4385-6039 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-169279
DOI:	10.7554/eLife.39563
Journal or Publication Title:	eLife
Volume:	7
Date:	2018
Publisher:	ELIFE SCIENCES PUBLICATIONS LTD
Place of Publication:	CAMBRIDGE
ISSN:	2050-084X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BARKLOUSE LEPINOTUS-PATRUELIS; SPERM-STORAGE ORGANS; EVOLUTION; PRIONOGLARIDIDAE; MORPHOLOGY; CHOICE; FLIES Multiple languages Biology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/16927