Flat-Tailed Horned Lizard Project
Posted: January 8th, 2019, 9:16 pm
2018 was a good one for me in the herp department - This summer I participated in the Arizona Game & Fish Department's internship program and got to be involved with Flat-Tailed Horned Lizard (Phrynosoma mcallii) surveys on the Barry M. Goldwater Range. It was a great experience seeing some relatively untouched habitat (other than where the target practice is, which has relatively minimal impact) and observing an ecosystem throughout the season. I was there from May to August, and participated in occupancy surveys for P. mcallii. This sort of experience was different from the destination-hopping that I usually do, and it was amazing to see predator-prey relationships, activity fluctuations of differing species throughout the season, breeding behaviors, neonates emerging, nocturnal/crepuscular/diurnal activity, etc. What was most interesting to me was observing the perfectly evolved psammophilic behavior in each species.
I didn't always have the time to take photos, but here is a sample of what was encountered out there. Some photos from my DSLR and some from my cell phone.
Barry M. Goldwater Dunes - Yuma County, AZ by Jeff Martineau, on Flickr
20180719_085956 by Jeff Martineau, on Flickr
Flat-Tailed Horned Lizards (Phrynosoma mcallii)
For the most part, although we had to manipulate and process each lizard for the study, I tried to take as many in-situ shots of these guys as possible. Their behavior is so interesting.
20180530_060236 by Jeff Martineau, on Flickr
20180606_100418 by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-3 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-6 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 7-6-18-6 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 7-3-18 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ-3 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ-4 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 6-21-18-5 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ (In-situ) May 2018-11 by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-9 by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-4 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 7-6-18-3 by Jeff Martineau, on Flickr
Goode's Horned Lizard (Phrynosoma geoodei)
This species was also another extremeley common Phrynosoma species out on the range. It wasn't uncommon by any means for them to overlap, but usually certain plots had more of one species than the other.
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Sidewinder (Crotalus cerastes laterorepens
Crotalus cerastes laterorepens - Yuma County, AZ by Jeff Martineau, on Flickr
Crotalus cerastes laterorepens - Yuma County, AZ by Jeff Martineau, on Flickr
Crotalus cerastes - Yuma County, AZ (In-situ) by Jeff Martineau, on Flickr
Crotalus cerastes laterorepens, Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Sidewinder (Crotalus cerastes laterorepens) - Yuma County, AZ by Jeff Martineau, on Flickr
Long-nosed Leopard Lizard (Gambelia wislizenii
Gambelia wislizenii - Yuma County, AZ by Jeff Martineau, on Flickr
This was an interesting observation - When we were hiking to plots in the dark hours of the morning, we occasionally found them perched up sleeping in creosote bushes.
Gambelia wislizenii nocturnal behavior (in-situ) - Yuma County, AZ by Jeff Martineau, on Flickr
Long-nosed Leopard Lizard (Gambelia wislizenii) - Yuma County, AZ_-2 by Jeff Martineau, on Flickr
Gambelia wislizenii - Yuma County, AZ by Jeff Martineau, on Flickr
Desert Iguana (Dipsosaurus dorsalis)
Dipsosaurus dorsalis - Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Shovelnose Snake (Chionactis occipitalis annulata)
Chionactis occipitalis annulata - Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Shovelnose Snake (Chionactis occipitalis annulata) - Yuma County, AZ by Jeff Martineau, on Flickr
Chionactis occipitalis annulata - Yuma County, AZ-2 by Jeff Martineau, on Flickr
20180808_062623 by Jeff Martineau, on Flickr
20180813_060725 by Jeff Martineau, on Flickr
Yuma Fringetoe Lizard (Uma rufopunctata)
Uma rufopunctata - Yuma County, AZ by Jeff Martineau, on Flickr
20180609_064844 by Jeff Martineau, on Flickr
Long-tailed Brush Lizard (Urosaurus graciousus
Urosaurus graciousus - Yuma County, AZ 7-6-18 by Jeff Martineau, on Flickr
Spotted Leafnose Snake (Phyllorhynchus decurtatus)
Phyllorhynchus decurtatus - Yuma County, AZ by Jeff Martineau, on Flickr
Banded Gecko (coleonyx variegatus)
20180731_045024 by Jeff Martineau, on Flickr
Predation
Something we saw on occasion was predation from Loggerhead Shrikes. There were a couple razor wire and barbed wire fences on the range that were frequently used by the birds.
Shriked FTHL by Jeff Martineau, on Flickr
Shriked Chionactis by Jeff Martineau, on Flickr
Shriked Gecko by Jeff Martineau, on Flickr
Loggerhead Shrike -Shriked- Iguana Skull by Jeff Martineau, on Flickr
I didn't always have the time to take photos, but here is a sample of what was encountered out there. Some photos from my DSLR and some from my cell phone.
Barry M. Goldwater Dunes - Yuma County, AZ by Jeff Martineau, on Flickr
20180719_085956 by Jeff Martineau, on Flickr
Flat-Tailed Horned Lizards (Phrynosoma mcallii)
For the most part, although we had to manipulate and process each lizard for the study, I tried to take as many in-situ shots of these guys as possible. Their behavior is so interesting.
20180530_060236 by Jeff Martineau, on Flickr
20180606_100418 by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-3 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-6 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 7-6-18-6 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 7-3-18 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ-3 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ-4 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 6-21-18-5 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ (In-situ) May 2018-11 by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-9 by Jeff Martineau, on Flickr
Phrynosoma mccalli - Yuma County, AZ (In-situ) May 2018-4 by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma mcallii - Yuma County, AZ 7-6-18-3 by Jeff Martineau, on Flickr
Goode's Horned Lizard (Phrynosoma geoodei)
This species was also another extremeley common Phrynosoma species out on the range. It wasn't uncommon by any means for them to overlap, but usually certain plots had more of one species than the other.
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Phrynosoma goodei - Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Sidewinder (Crotalus cerastes laterorepens
Crotalus cerastes laterorepens - Yuma County, AZ by Jeff Martineau, on Flickr
Crotalus cerastes laterorepens - Yuma County, AZ by Jeff Martineau, on Flickr
Crotalus cerastes - Yuma County, AZ (In-situ) by Jeff Martineau, on Flickr
Crotalus cerastes laterorepens, Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Sidewinder (Crotalus cerastes laterorepens) - Yuma County, AZ by Jeff Martineau, on Flickr
Long-nosed Leopard Lizard (Gambelia wislizenii
Gambelia wislizenii - Yuma County, AZ by Jeff Martineau, on Flickr
This was an interesting observation - When we were hiking to plots in the dark hours of the morning, we occasionally found them perched up sleeping in creosote bushes.
Gambelia wislizenii nocturnal behavior (in-situ) - Yuma County, AZ by Jeff Martineau, on Flickr
Long-nosed Leopard Lizard (Gambelia wislizenii) - Yuma County, AZ_-2 by Jeff Martineau, on Flickr
Gambelia wislizenii - Yuma County, AZ by Jeff Martineau, on Flickr
Desert Iguana (Dipsosaurus dorsalis)
Dipsosaurus dorsalis - Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Shovelnose Snake (Chionactis occipitalis annulata)
Chionactis occipitalis annulata - Yuma County, AZ by Jeff Martineau, on Flickr
Colorado Desert Shovelnose Snake (Chionactis occipitalis annulata) - Yuma County, AZ by Jeff Martineau, on Flickr
Chionactis occipitalis annulata - Yuma County, AZ-2 by Jeff Martineau, on Flickr
20180808_062623 by Jeff Martineau, on Flickr
20180813_060725 by Jeff Martineau, on Flickr
Yuma Fringetoe Lizard (Uma rufopunctata)
Uma rufopunctata - Yuma County, AZ by Jeff Martineau, on Flickr
20180609_064844 by Jeff Martineau, on Flickr
Long-tailed Brush Lizard (Urosaurus graciousus
Urosaurus graciousus - Yuma County, AZ 7-6-18 by Jeff Martineau, on Flickr
Spotted Leafnose Snake (Phyllorhynchus decurtatus)
Phyllorhynchus decurtatus - Yuma County, AZ by Jeff Martineau, on Flickr
Banded Gecko (coleonyx variegatus)
20180731_045024 by Jeff Martineau, on Flickr
Predation
Something we saw on occasion was predation from Loggerhead Shrikes. There were a couple razor wire and barbed wire fences on the range that were frequently used by the birds.
Shriked FTHL by Jeff Martineau, on Flickr
Shriked Chionactis by Jeff Martineau, on Flickr
Shriked Gecko by Jeff Martineau, on Flickr
Loggerhead Shrike -Shriked- Iguana Skull by Jeff Martineau, on Flickr