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Marco Graziano Profile picture
Marco Graziano
@MarcoGraziano
Post-Doctoral Associate @ImmlerLab, #sexualselection #evoeco #gametes #crypticfemalechoice #eggs #sperm comp ~ some sci-illustrations and scuba-diving
Mar 24, 2021 • 6 tweets • 7 min read
1/6 #UEACEEC21 #Sesh1
Salmon usually return to their natal streams to spawn, presenting a risk of breeding between close genetic relatives.
By reducing heterozygosity, #inbreeding can deplete the genetic variability of a population, affecting offspring fitness and survival Image 2/6 #UEACEEC21 #Sesh1
However, #salmons are externally fertilisers and females are polyandrous. So how do females control #fertilisation when this occurs outside of their bodies?
Can they somehow hamper fertilisation from their siblings?#evolution may have allowed such mechanisms Image