Poncin, 1996



Citation


Poncin, P. (1996) A field observation on the influence of aggressive behaviour on mating success in the European grayling. Journal of Fish Biology [J. FISH BIOL.], pp. 802-804

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Abramis brama Spawning conditions Mating system May be considered polygamous : each male can mate successively with several females, and each female can mate simultaneously and successively with several males [One female followed by two to eight males] Polyandry
Thymallus thymallus Spawning conditions Mating system Most by pair, 2 out of 55 included two males with one female Monogamy
Abramis brama Spawning conditions Nycthemeral period of oviposition During the day but decrease slighy during the afternoon Day
Thymallus thymallus Spawning conditions Nycthemeral period of oviposition The intensity of the spawning reached its maximum at the beginning of the afternoon, when the temperature increase No category
Abramis brama Spawning conditions Spawning substrate Phytophilous : roots of alder, willow trees and aquatic plants Phytophils
Thymallus thymallus Spawning conditions Spawning substrate Clean 1-3 cm gravel Lithophils
Abramis brama Spawning conditions Spawning site preparation No nest, but some males are territorial and very aggressive and others are non-territorial Open water/substratum scatter
Thymallus thymallus Spawning conditions Spawning site preparation Biggest grayling was strougly territorial, other males did not appear to defend territories No category
Thymallus thymallus Spawning conditions Spawning temperature 8 8.0 °C
Thymallus thymallus Spawning conditions Spawning water type Water velocities: about 20cm/s Flowing or turbulent water
Abramis brama Spawning conditions Spawning depth Water depth ranges between 25 and 50 cm 25.0 m
Thymallus thymallus Spawning conditions Spawning depth Water depth 30-40 cm [Sometimes up to 88 cm] 35.0 m
Abramis brama Male Male sexual dimorphism Territorial males are brown-yellow in colouration with tubercules Absent
Thymallus thymallus Spawning conditions Spawning season Can occur between 23 to 26 March and from 1 to 3 April ['April', 'March']
Abramis brama Female Length at sexual maturity 32.9 ± 0.39 mean with n =122 [Vary from 25.0-43.0] 32.9 cm
Abramis brama Spawning conditions Spawning release Several batches of eggs are released and fertilized by different males Mutliple