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===Sexual dimorphism=== |
===Sexual dimorphism=== |
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The female scalloped hammerheads migrate offshore at a smaller size than males<ref name="link.springer">{{cite journal |title=The determinants of sexual segregation in the scalloped hammerhead shark, ''Sphyrna lewini'' |date=1 January 1987 |doi=10.1007/BF00002325 |volume=18 |journal=Environmental Biology of Fishes |pages=27–40|last1=Klimley |first1=A. Pete |s2cid=29448517 }}</ref> because the larger classes of the hammerhead, such as those from |
The female scalloped hammerheads migrate offshore at a smaller size than males<ref name="link.springer">{{cite journal |title=The determinants of sexual segregation in the scalloped hammerhead shark, ''Sphyrna lewini'' |date=1 January 1987 |doi=10.1007/BF00002325 |volume=18 |journal=Environmental Biology of Fishes |pages=27–40|last1=Klimley |first1=A. Pete |s2cid=29448517 }}</ref> because the larger classes of the hammerhead, such as those from 100 to 140 cm long, travel deeper down.<ref name="link.springer" /> Males and females differ in that males are observed to stay deeper than female sharks in general. |
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Sexual maturity generally occurs once the scalloped hammerhead attains |
Sexual maturity generally occurs once the scalloped hammerhead attains 240 cm in total or longer. Physically, the mature females have considerably wider uteri than their maturing counterparts. A lack of mating scars has been found on mature females.<ref name="link.springer_a">{{cite journal |title=Aspects of Reproductive Biology of the Scalloped Hammerhead Shark, ''Sphyrna lewini'', off Northeastern Brazil |date=1 June 2001 |doi=10.1023/A:1011040716421 |volume=61 |issue=2 |journal=Environmental Biology of Fishes |pages=151–159|last1=Hazin |first1=Fabio |last2=Fischer |first2=Alessandra |last3=Broadhurst |first3=Matt |s2cid=44367667 }}</ref> Unlike females, males reach sexual maturity at a much smaller size. |
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The male-to-female ratio of the scalloped hammerhead is 1:1.29.<ref name="link.springer_a" /> Females probably are capable of giving birth annually,<ref name="link.springer_a" /> usually in the summer.{{citation needed|date=May 2023}} |
The male-to-female ratio of the scalloped hammerhead is 1:1.29.<ref name="link.springer_a" /> Females probably are capable of giving birth annually,<ref name="link.springer_a" /> usually in the summer.{{citation needed|date=May 2023}} |
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