new timber topic....UH-OH!!!!

Dedicated exclusively to field herping.

Moderator: Scott Waters

Post Reply
User avatar
muskiemagnet
Posts: 1253
Joined: June 11th, 2010, 8:43 am
Location: kaukauna, wi

new timber topic....UH-OH!!!!

Post by muskiemagnet »

ok, so i've been going through pics and reminiscing. i've noticed a distinct pattern to all of my timber shots. two black dots on the top of the head. also, faint wider spots behind. any thoughts as to what they are or why? they seem too symmetrical along the spinal chord to be just an anomaly. like i said, i have other snakes that show the same. could these spots serve a function? are they just cosmetic? if they serve a function, the only thought i have is a potential photo sensor for light.

Image

-ben
User avatar
Soopaman
Posts: 924
Joined: March 18th, 2012, 7:34 pm
Location: Houston, Texas

Re: new timber topic....UH-OH!!!!

Post by Soopaman »

I'm not sure of function... if any, but copperheads have them as well.

Image
Agkistrodon contortrix contortrix (Southern Copperhead) by Kyle L.E., on Flickr
SnakeDude
Posts: 417
Joined: July 14th, 2011, 9:18 am
Location: Denver, CO

Re: new timber topic....UH-OH!!!!

Post by SnakeDude »

Yeah i've noticed that in garter snakes too. It's probably just random pigmentation, or at least thats all i've made of it. of course the garter snakes don't have those lighter spots behind... maybe it's meant to spook anything looking down at it into thinking the spots are its eyes and it's looking up at the predator or somethin.

you can see the spots on the wandering garter's head pretty well here
Image

Ian
User avatar
chris_mcmartin
Posts: 2447
Joined: June 9th, 2010, 12:13 am
Location: Greater Houston TX Area
Contact:

Re: new timber topic....UH-OH!!!!

Post by chris_mcmartin »

Soopaman wrote:I'm not sure of function... if any, but copperheads have them as well.
The presence of the two dots is a great indicator you have a copperhead as opposed to a skink.


:crazyeyes:
User avatar
muskiemagnet
Posts: 1253
Joined: June 11th, 2010, 8:43 am
Location: kaukauna, wi

Re: new timber topic....UH-OH!!!!

Post by muskiemagnet »

didn't realize coppers had them too. the "eye spot" thought is a good one. the symmetry just seems too precise for the spots to be cosmetic.

anybody have pics of this in cottons. how bout other crotes?

-ben
sawfish
Posts: 16
Joined: October 21st, 2012, 9:12 am

Re: new timber topic....UH-OH!!!!

Post by sawfish »

parietal eyes
User avatar
Soopaman
Posts: 924
Joined: March 18th, 2012, 7:34 pm
Location: Houston, Texas

Re: new timber topic....UH-OH!!!!

Post by Soopaman »

muskiemagnet wrote:... the symmetry just seems too precise for the spots to be cosmetic.

anybody have pics of this in cottons. how bout other crotes?

-ben

The bilateral symmetry during development is why they are so precisely symmetrical. Their entire head shares the same symmetry.

I don't think cottonmouths have the spots, and I know for sure that WDBs do not. I was checking one out that was on display at a nature center in Houston, and specifically looked for the spots.
chad ks
Posts: 634
Joined: June 7th, 2010, 1:31 pm

Re: new timber topic....UH-OH!!!!

Post by chad ks »

deja vu x 3 :thumb:
User avatar
Don Becker
Posts: 3312
Joined: June 7th, 2010, 4:21 am
Location: Iowa
Contact:

Re: new timber topic....UH-OH!!!!

Post by Don Becker »

chad ks wrote:deja vu x 3 :thumb:
I couldn't remember if it had brought up once or twice before. Lots of stuff is brought up again after the crash though.
User avatar
walk-about
Posts: 567
Joined: June 14th, 2010, 12:04 pm
Location: 'God's Country' aka western KY
Contact:

Re: new timber topic....UH-OH!!!!

Post by walk-about »

Actually, the majority of juvenile cottonmouths I've examined in Kentucky, do have parietal spots. And I would think most individuals from TX would as well. BTW, the spots act as a defensive scheme for potential predators attacking. This a theory.

RoCK ON!

Dave
User avatar
jason folt
Posts: 262
Joined: June 7th, 2010, 9:20 am
Location: Midwest
Contact:

Re: new timber topic....UH-OH!!!!

Post by jason folt »

Seems like a pretty crappy defense mechanism to distract the predator away from the head - to the head...
ugh

Re: new timber topic....UH-OH!!!!

Post by ugh »

The defense theory doesn't make sense to me either. I suspect something relative to the parietal eye as seen in iguanids and some other herps. I also think I've seen it on more snake species than ones I haven't seen it on, not just crotalids.
Post Reply