Troglops albicans (Malachiidae) - Balz und Kopulation

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Formal Metadata

Title
Troglops albicans (Malachiidae) - Balz und Kopulation
Alternative Title
Troglops albicans (Malachiidae) - Courtship and Copulation
Author
Matthes, Dieter
License
CC Attribution - NonCommercial - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI
IWF Signature
E 1639
Publisher
IWF (Göttingen)
Release Date
1970
Language
Silent film
Producer
IWF
Production Year
1969

Technical Metadata

IWF Technical Data
Film, 16 mm, 78 m ; SW, 7 1/2 min

Content Metadata

Subject Area
Abstract
Weichkäfer. Gustatorische Balz: Das Männchen bietet dem Weibchen seine Kopfgrube zum Beknabbern an. Nach mehrmaligem Kontakt der weiblichen Gustorezeptoren mit dem Sekret steigt die Kopulationsbereitschaft des Weibchens, die das Männchen durch rückwärtige Berührung seiner Partnerin prüft. Kopulation, dabei Starrezustand des Männchens.
The film covers the wooing and copulation of Troglops albicans L. In the frontal area of his head, the male has a cavity, around which, in several places, a taste secretion is released. The cavity is offered to the female to nibble at, during which action her taste buds come into contact with the secretion. Repeated intake of the secretion decreases the female's initial aversion to mating. The male tests the willingness to mate by rearward touching of his partner, who remains still when ready to mate. The Troglops wooing is distinguished by the surprisingly energetic activity of the male. The male alternates continuously between the two polar actions: profferance of the cavity and rearward (testing) contact. He glides in a rapid sideways movement along the partner or around her. This 'dance around the female' can last for hours. A little while after begin of copulation, the male subsides into a state of rigidity, whereby he loses retention of the riding position and falls over backwards. After the 'awakening', the original riding position is taken up again. The female attempts to free herself of the copulating male by means of rapid circling movements.
Keywords
Weichkäfer
Troglops albicans
Kopulation / Coleoptera
Fortpflanzung, geschlechtliche / Coleoptera
Balz / Insecta
courtship / Insecta
reproduction, sexual / Coleoptera
copulation / Coleoptera
Troglops albicans
beetle

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AV-Portal 3.9.2 (c7d7a940c57b22d0bc6d7f70d6f13fde2ef2d4b8)