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HEMIPENE CASTS: here's a duet....

serpentcity Feb 17, 2004 08:49 PM

"...was mining for gold one day, when I found..."

Not really.

Actually what we have here is a pair of dried hemipene casts from an approx 1000 gm Butterscotch ghost male, found lying in close proximity on the floor of the female's cage at the beginning of the breeding season.

They are approx 1 cm "tall" (about 1/2". The thicker vertical portion is the cast of the hemipene sulcus, or cavity in the hemipene in which sperm travels to enter the female's cloaca during mating. The thinner horizontal portion is the "tag" of sperm plug extending into the vas deferens, or tube between the hemipene and testes. The content of these casts, or "plugs" is dried sperm (mostly DNA, mitochondrial proteins, and glycogen stores), small amounts of waxy-type lipids (fats), and polysaccharides from mucus.

At or around the beginning of the breeding season (or anytime depending on the reproductive activity/non-activity of the male), the male will clear his hemipenes of these casts to prepare for breeding. While they are IN the sulcus of the hemipene, the casts are soft and pliable. Once ejected from the hemipene and out, they dry quickly into firm "casts". Often these casts are HIGHLY symmetrical in their shape.

Anyways, end of lecture. If you've never seen 'em, here is an example. I wish to thank George Knaack for taking the photographs. George used a Nikon model 885 to do the deed. Thanks for looking!
Scott J. Michaels DVM
Image

Replies (5)

Euclid Feb 17, 2004 09:55 PM

And Gail says thanks too....I think....maybe I was just hearing things?

binky Feb 17, 2004 11:50 PM

wow....that is really cool......

IMO Feb 18, 2004 04:38 PM

LOL
very educational

MarkS Feb 18, 2004 05:44 PM

That was very interesting and informational. I wish I could see more posts like that on this forum...

Mark

>>"...was mining for gold one day, when I found..."
>>
>>Not really.
>>
>>Actually what we have here is a pair of dried hemipene casts from an approx 1000 gm Butterscotch ghost male, found lying in close proximity on the floor of the female's cage at the beginning of the breeding season.
>>
>>They are approx 1 cm "tall" (about 1/2". The thicker vertical portion is the cast of the hemipene sulcus, or cavity in the hemipene in which sperm travels to enter the female's cloaca during mating. The thinner horizontal portion is the "tag" of sperm plug extending into the vas deferens, or tube between the hemipene and testes. The content of these casts, or "plugs" is dried sperm (mostly DNA, mitochondrial proteins, and glycogen stores), small amounts of waxy-type lipids (fats), and polysaccharides from mucus.
>>
>>At or around the beginning of the breeding season (or anytime depending on the reproductive activity/non-activity of the male), the male will clear his hemipenes of these casts to prepare for breeding. While they are IN the sulcus of the hemipene, the casts are soft and pliable. Once ejected from the hemipene and out, they dry quickly into firm "casts". Often these casts are HIGHLY symmetrical in their shape.
>>
>>Anyways, end of lecture. If you've never seen 'em, here is an example. I wish to thank George Knaack for taking the photographs. George used a Nikon model 885 to do the deed. Thanks for looking!
>>Scott J. Michaels DVM
>>

Kikai Feb 19, 2004 09:17 AM

For posting that! I was examining my male BP last week, and messing with his tail, and he everted his hemipenes and exuded a softer version of the casts you found and photographed. Having never seen this before (he's my oldest BP at 3 yrs old approx)I guessed they were sperm plugs, but wasn't sure at all. This answers my question! They looked EXACTLY like that, but not dried out. Thank you for such an informative post.

(my baby is all grown up...sigh)
-----
1.1 Ball Python 0.0.1 corn snake 1.0 Bearded Dragon
0.0.2 fish 1.2 cats 3.1 kids 1.0 husband and now...
0.0.1 Pink Zebra Beauty Tarantula
2.0 Solomon Island Boas

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