Discover and read the best of Twitter Threads about #salmons
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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
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
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
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
3/6 #UEACEEC21 #Sesh1
To test this, we analysed #spermmotility in sibling vs non-sibling ovarian fluid, a substance released with eggs and involved in #sexualselection in #fish. Then, we compared #fertility & hatch rates between sib vs non-sib crosses after #invitro fertilisation
To test this, we analysed #spermmotility in sibling vs non-sibling ovarian fluid, a substance released with eggs and involved in #sexualselection in #fish. Then, we compared #fertility & hatch rates between sib vs non-sib crosses after #invitro fertilisation
