Male-cod -

Is cod lekking or a promiscuous group spawner? - Nordeide - 2000

The male cod's role in the Atlantic cod mating system is characterized by high levels of energy expenditure and competitive interaction. male-cod

: During spawning, males exhibit significantly higher activity levels than females, often dwelling deeper (typically >20 m) where they engage in territorial and agonistic (aggressive) behaviors. Is cod lekking or a promiscuous group spawner

: Studies describe the cod mating system as a "lek," where males assemble to perform competitive displays. This behavior includes: : Studies describe the cod mating system as

: Successful courtship concludes with a ventral mount , where the male swims beneath the female, grasping her with his pelvic fins to release sperm as she releases eggs. Morphological and Genetic Traits

: Males use specialized "drumming muscles" to produce sounds that stimulate females and enforce dominance.