Shark Embryonic cannibalism Flashcards
1
Q
The Behavioural and genetic mating system of the sand tiger shark: Intrauterine cannibal
Author / date?
A
Chapman et al 2023
2
Q
What is the embryo behaviour an example of?
A
Post-copulatory competition
3
Q
Back ground of the study?
A
Larger embryos in the sand tiger shark cannibalise smaller embryos
4
Q
What were the mating systems observed?
A
60% of females were polyandrous (had multiple partners)
5
Q
What percentage of the polyandrous females gave birth to full siblings?
A
60%
6
Q
Females don’t have much choice over mate choice and attempts, how could embryonic cannibalism be an adaptation for this?
A
Could be a way of ensuring quality males offspring survive
