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Unread 03/15/2014, 03:25 PM   #1
alprazo
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Aggressively going at it (sharks)

I've seen mating attempts many times with this male short tail nurse shark. Typically he will roll or spin around and occasionally a clapser is eventually inserted for several seconds and then it is over. I have never witnessed this behavior before, but it is a different female than usual.

For those shark enthusiasts out there, it is interesting to note that in addition to more than one mating technique in these sharks, this time the contralateral clasper is used. This is a small clip about 40 minutes into it. It took a long time for her to tire and give up fighting. BTW - the female appears to be carrying eggs. This would be her first season for egg laying. My older female also appears to be carrying too. Last year she laid 6 duds.



http://youtu.be/A01a4sLD8Ek


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Unread 03/15/2014, 06:27 PM   #2
humaguy
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incredible clip...feel bad for the female, get her some pepper spray, lol...


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Unread 03/16/2014, 07:13 AM   #3
Cu455
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Great video thanks for sharing. What is the contralateral clasper?


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Unread 03/16/2014, 08:00 AM   #4
griseum
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Thats a little unusual. He's a porkchop too.
Thats all great news btw.


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Unread 03/16/2014, 11:22 AM   #5
Zoodiver
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Nice video. I'm still trying to get video of my greys. All I have are still shots so far.


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Unread 03/18/2014, 08:23 PM   #6
alprazo
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CU455, claspers are the sexual organs in male sharks. There are adjacent to the pelvic fins. If you look close in the video, the claspers are crossed, like crossing you fingers, and the clasper that is on the opposite side of the female is the one being inserted.

BTW, the male was at it again tonight with a different female. She was able to fight him off though.


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Unread 03/18/2014, 08:27 PM   #7
alprazo
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Zoodiver,

When you say greys, do you mean grey nurse? That could be one violent act.


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Unread 03/19/2014, 11:23 AM   #8
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Very interesting. How large is that tub?


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Unread 03/19/2014, 11:58 AM   #9
Zoodiver
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Quote:
Originally Posted by alprazo View Post
Zoodiver,

When you say greys, do you mean grey nurse? That could be one violent act.
I meant grey bamboos (Chiloscyllium griseum).

Although I have spent many years with grey nurse / sand tigers (Carcharias taurus) in displays. Those things are so hard to get a read on when working with them. One minute they're big puppies, the next they have a 4' shark tank mate hanging out of thier mouth. Happens so fast you fill your wetsuit. "Violent" barely starts to describe their breeding behavior. Haha

That being said, I have the tooth of one of my old 9' females that I wear around my neck as a reminder of my time with them.


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Unread 03/19/2014, 02:58 PM   #10
Joe0813
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thats a lot of work for seconds of fun


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Unread 03/19/2014, 08:12 PM   #11
alprazo
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Zoo diver,

A friend whose wife works for marine bio dept at univ of de sent me this photo. They were catching smooth hounds and I think she told me they were in the process of tagging this one when a sand tiger came out of nowhere. They happened to be recording their catch and nabbed this amazing shot. It goes to the unpredictability of this species. Hard to believe they reside just past the wave break along the east coast and never an attack. I believe their track record is a little different in other parts of the world. Anyway, it is one impressive photo and shows what they can do to a 3-4ft animal




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Unread 03/20/2014, 10:04 AM   #12
Zoodiver
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Wow, amazing action shot!!


This one was about 5 or 6 years ago. A 9 ft female sand tiger taking down a 3' white tip reef shark (on display). Exactly why I suggested not introducing the smaller bodied sharks to the larger display.




This is me with a little guy is one of the males in the display.




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Unread 03/20/2014, 11:48 AM   #13
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For some reason, I feel like I should call the cops after seeing that video.
Forget the pepper spray. Get her a pistol...


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Unread 03/20/2014, 12:57 PM   #14
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Great video; could use some music!


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Unread 03/20/2014, 01:39 PM   #15
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Are sand tigers and ragged tooth sharks the same? the Boston Aquarium has a "ragged tooth" in the big display tank and it looks just like these


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Unread 03/20/2014, 02:21 PM   #16
griseum
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Wow. Im glad I didn't know that the Grays lived right past the break in my surfing days. Although I did see many shadows early, early in the morning underwater. Down off Jones Beach, Oak Beach, Gilgo Beach. Did see many a smoothie though. Back then, everything was a "sand shark". Whether it was 12" Dogfish pup or anything 6 feet and bigger that washed up.

What Lies Beneath....


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Unread 03/20/2014, 03:08 PM   #17
Cu455
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I assume the sand tiger ripped the smooth hound of and swam away with it.

Quote:
Originally Posted by Zoodiver View Post
That is one of the best pictures I have ever seen. It looks to good to be real. I can see that picture on National Geographies.


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Unread 04/07/2014, 09:10 PM   #18
alprazo
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(4/7/14) Set one from for 2014. In two months I hope to see embryos. 5 months total for these guys.




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Unread 04/15/2014, 08:06 PM   #19
alprazo
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4/15

Set #2. Last year the eggs were laid ~ 17 days apart. This set is only 8 days. Not sure if two sharks are laying eggs or one.




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Last edited by alprazo; 04/15/2014 at 08:19 PM.
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Unread 04/15/2014, 09:19 PM   #20
Cu455
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Thats awesome. I am looking foward to seeing the progress.
Quote:
Originally Posted by alprazo View Post
Not sure if two sharks are laying eggs or one.
http://www.walmart.com/msharbor/ip/I...t-Kit/10740658


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Unread 04/16/2014, 01:38 PM   #21
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Thats great stuff. Please continue to provide updates. Thanks


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Unread 04/16/2014, 01:57 PM   #22
Zoodiver
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Quote:
Originally Posted by Cu455 View Post
That is one of the best pictures I have ever seen. It looks to good to be real. I can see that picture on National Geographies.
Yeah right, it's way out of focus. I can promise you it's real. Here's video (not mine).

https://www.youtube.com/watch?v=K_d8KoL4NKM


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Unread 04/16/2014, 06:35 PM   #23
alprazo
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Wow!

I thought wobbies couldn't be trusted. I've seen sand tigers so many times in public displays and caught them in the surf where many swim. They act so passive and to my knowledge never misbehave by attacking a human. Better to stick with browns in a giant mixed display like that I guess.


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Unread 04/17/2014, 07:33 AM   #24
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Quote:
Originally Posted by Zoodiver View Post
Yeah right, it's way out of focus. I can promise you it's real. Here's video (not mine).

https://www.youtube.com/watch?v=K_d8KoL4NKM
Did the smaller shark make it?


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Unread 04/17/2014, 09:38 AM   #25
Zoodiver
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Quote:
Originally Posted by anbosu View Post
Did the smaller shark make it?
Yes.
This happened once while I was there and we rehabbed it quite well over several months. I pulled all of the white tip reefs out of the main display.

After I left to aquarium, they put them all back in - and this happened (shocker). This one made it as well.


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