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Maja verrucosa (Majidae) - Kampfverhalten

Formal Metadata

Title
Maja verrucosa (Majidae) - Kampfverhalten
Alternative Title
Maja verrucosa (Majidae) - Fighting Behaviour
Author
License
No Open Access License:
German copyright law applies. This film may be used for your own use but it may not be distributed via the internet or passed on to external parties.
Identifiers
IWF SignatureE 895
Publisher
Release Date
Language
Producer
Production Year1964

Technical Metadata

IWF Technical DataFilm, 16 mm, 40 m ; SW, 4 min

Content Metadata

Subject Area
Genre
Abstract
German
German
Kleine Seespinne. Abwehr durch "Scheren-Spieß-Haltung": Entgegenstrecken der Scherenbeine, Scheren geöffnet. "Fächerhaltung": Fast senkrechtes Aufrichten des Körpers, Schere und erstes Laufbein seitwärts-aufwärts ausgestreckt. "Scherenmessen" zweier kämpfender Tiere: Scherenbeine Aneinanderlegen, Wegdrücken. Beschädigungskampf: Aufeinander Einschlagen, Scheren Packen und Abdrehen. Packen kleiner Artgenossen und Wegsetzen.
English
English
Maja verrucoa (Majidae), the small seaspider, has at it's disposal a rich repertoire of threat and defense gestures. When a male holds a female encaged in between his walking legs, it regularly comes to fights where the male must defend himself and the female against approaching conspecifics. The simplest posture is the "chelae-forward-posture"; the first walking legs are stretched out and held towards the opponent. In the "fan posture", the body is vertically erected with chelae and first walking legs stretched out sidewards and upwards. The ritualized fighting behaviour of "cheliped measuring" consists of the opponents trying to make contact over the length of the chelipeds and to push each other away. In more harmful battles the animals try to strike each other and to seize the opponent's claws and twist them off. Smaller animals are simply grasped with one claw, set aside, or layed on their back.
Keywords
German
German
English
English
IWF Classification
German
German
English
English