Fortpflanzungsverhalten des Grünen Schwertträgers (Xiphophorus helleri)

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Formal Metadata

Title
Fortpflanzungsverhalten des Grünen Schwertträgers (Xiphophorus helleri)
Alternative Title
Reproductive Behaviour of the Swordtail Xiphophorus helleri
Author
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.
Identifiers
IWF Signature
D 1179
Publisher
Release Date
1976
Language
German
Producer
Universität Hamburg, Zoologisches Institut
IWF
Production Year
1973

Technical Metadata

IWF Technical Data
Film, 16 mm, LT, 124 m ; SW, 11 1/2 min

Content Metadata

Subject Area
Abstract
Bau und Entstehung des Kopulationsorgans aus der Afterflosse. Kämpfe um Reviere und Rangordnung bei den Männchen: Bisse, Rammstöße, Maulkämpfe. Balz: Wiegen, Betupfen des Weibchens (Nippen), Rückwärtsschwimmen, Balztanz. Kopulation und Verankerung des männlichen Gonopodiums, "Gonopodialschwingen", Geburt (lebendgebärend). (Vgl. Film D 1178).
As an introduction, the male and female of the Green Swordtail are presented, the sexual differences, including the development of the gonopodium, is explained and the range of the species is shown. A high-ranking alpha-male drives a lover-ranking male away. Where only slight differences in rank occur, the males threaten each other frequently. If the rank-order is not yet decided, and two males are about the same size, aggression increases until an intensive fight begins. This will decide the future rank-order. The courtship patterns of the male, including possible variations, are first shown separately and then in sequence. During copulation the male inserts the tip of his gonopodium as an holdfast-mechanism into the female's genital opening. Finally, the birth of a number of young fish is shown. Very rapid sequences of motion are shown in slow motion (64 f/s).
Keywords Zahnkarpfen, Lebendgebärende Schwertträger / Grüner Schwertträger Xiphophorus helleri Kampfverhalten / Pisces Geburt / Pisces Kopulation / Pisces Balz / Atheriniformes courtship / Atheriniformes copulation / Pisces birth / Pisces fighting behaviour / Pisces Xiphophorus helleri Swordtail / Green Swordtail Green Swordtail

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