A little research turns up that "Sharks exhibit a great diversity in reproductive modes. There are oviparous (egg-laying) species and viviparous (live-bearing) species."
Mermaid's purse: "This name is given to the egg cases of many sharks and skates. This tough, protective purse-shaped egg case contains one fertilized egg. A young shark or skate later emerges from the mermaid's purse. Shark species that utilize this mode of reproduction include the swell shark, dogfish, and angel sharks."
I was wondering if different species of dogfish exhibited different methods of reproduction. As I was looking around, I noticed the diversity in the genus and recalled that we never were told what species of dogfish we were slicing and dicing. Now I know it had to be one of the viviparous species! Good detective work :-)
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
no subject
We're both right
Mermaid's purse: "This name is given to the egg cases of many sharks and skates. This tough, protective purse-shaped egg case contains one fertilized egg. A young shark or skate later emerges from the mermaid's purse. Shark species that utilize this mode of reproduction include the swell shark, dogfish, and angel sharks."
http://www.flmnh.ufl.edu/fish/education/questions/Biology.html#birth
The dogfish available through the Carolina Biological supply co are not specified, but I bet they are a viviparous species.
Re: We're both right