Search found 170 matches

by Robert Hansen
April 26th, 2012, 11:11 am
Forum: The Forum
Topic: Ensatina: eschscholtzii, klauberi, or hybrid/integrade
Replies: 2
Views: 1048

Re: Ensatina: eschscholtzii, klauberi, or hybrid/integrade

Hybrid. Congrats on finding one!
by Robert Hansen
March 29th, 2012, 7:01 pm
Forum: The Forum
Topic: Afternoon in the Coast Range
Replies: 12
Views: 1478

Re: Afternoon in the Coast Range

Fieldnotes wrote:Could the Slender Salamander be Batrachoseps gavilanensis.
So far everything from western Merced Co. has been attenuatus.
by Robert Hansen
March 23rd, 2012, 8:10 pm
Forum: Herpetoculture Forum
Topic: Rio Fuertes hatching!
Replies: 32
Views: 5752

Re: Rio Fuertes hatching!

Are they able to breathe fire yet? Way cool critters...congrats.
by Robert Hansen
March 15th, 2012, 8:32 pm
Forum: The Forum
Topic: Herp Relocation?
Replies: 16
Views: 2680

Re: Herp Relocation?

Kent is spot-on...not legal. Nor is it advisable from a biological standpoint. Presumably, the "receiving" habitat already contains XX amount of kingsnakes, gophersnakes, etc. that available resources (prey, refugia) can support. So, even if this was legal, it's a bad idea. However, I commend you fo...
by Robert Hansen
March 14th, 2012, 5:14 pm
Forum: The Forum
Topic: Locality question
Replies: 3
Views: 682

Re: Locality question

Yep, only herp recorded on Alcatraz is the California Slender Salamander (Batrachoseps attenuatus). Genetic work shows this population to have been introduced by humans from nearby Angel Island, probably along with soil brought in to construct the prison.
by Robert Hansen
March 7th, 2012, 6:26 am
Forum: The Forum
Topic: Amateur question
Replies: 6
Views: 947

Re: Amateur question

I appreciate this. Thanks for the knowledge haha. I think I might fall in the overlap area. Where are you located? Snakes that are morphologically helleri extend as far north as the Lebec/Gorman/Frazier Park area in southern Kern Co., while snakes occurring north of there (at least those I've seen ...
by Robert Hansen
March 2nd, 2012, 2:02 pm
Forum: Reading Room
Topic: Herp Review question
Replies: 2
Views: 2071

Re: Herp Review question

Corey: HR is published quarterly and is mailed together with the Journal of Herpetology . The exact timing varies, but generally the issue is done by the middle to latter part of the month. For the March issue, page proofs were sent to most authors yesterday, so you can expect to see the issue out t...
by Robert Hansen
March 2nd, 2012, 1:14 pm
Forum: The Forum
Topic: New Pub on Southern California/Baja Batrachoseps
Replies: 1
Views: 454

New Pub on Southern California/Baja Batrachoseps

Here's the latest word on southern California and Baja California Batrachoseps . Íñigo Martínez-Solano, Anny Peralta-García, Elizabeth L. Jockusch, David B. Wake, Ella Vázquez-Domínguez, Gabriela Parra-Olea. 2012. Molecular systematics of Batrachoseps (Caudata, Plethodontidae) in southern California...
by Robert Hansen
March 1st, 2012, 12:45 am
Forum: The Forum
Topic: Can someone identify this salamander?
Replies: 6
Views: 793

Re: Can someone identify this salamander?

A. tigrinum is introduced to the wastewater treatment ponds in Tehachapi. Metamorphs emerge in numbers on rainy nights and are suddenly noticed by residents. The local newspaper ran an article on them a few years ago.

Cheers,

BH
by Robert Hansen
February 23rd, 2012, 4:38 pm
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

Re: New Salamanders for California

Brian Hubbs wrote:That 2nd link didn't work...
Weird that they killed the old link. So, here's a new one:

http://ifile.it/f6y4hxc
by Robert Hansen
February 23rd, 2012, 1:27 pm
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

Re: New Salamanders for California

Don't get too hung up on morphological variation in these guys, as it might or might not track evolutionary history. Frankly, it can be maddening for all of us that not only do so many species look a lot like each other (attenuatus, nigriventris, gregarius, luciae, gavilanensis, minor, incognitus),...
by Robert Hansen
February 21st, 2012, 10:50 am
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

Re: New Salamanders for California

2. Baldwin Hills, E La Cienaga Blvd., Hahn Recreation Area (Los Angeles Co.) That's very interesting. I haven't found blackbellies there myself, but I have found quite a few blackbellies just south of there (especially on the PV peninsula) that looked quite "odd" to me. I wouldn't be surprised at a...
by Robert Hansen
February 17th, 2012, 11:48 am
Forum: The Forum
Topic: Masticophis flagellum in Santa Cruz county, CA.?
Replies: 22
Views: 2451

Re: Masticophis flagellum in Santa Cruz county, CA.?

Robert, I never would have guessed that they could be found at Zayante. That's quite the range extension. If Jeff said it was there --- it's time to redraw the range maps. I will try to confirm that I have such a record, and if so, ask Jeff to weigh in on potential for flagellum habitat within Sant...
by Robert Hansen
February 17th, 2012, 11:14 am
Forum: The Forum
Topic: Masticophis flagellum in Santa Cruz county, CA.?
Replies: 22
Views: 2451

Re: Masticophis flagellum in Santa Cruz county, CA.?

I am not at my computer that contains a large database of records, but if my recall is accurate, I know of one DOR found on Zayante Creek Road, and I believe the report stems from Jeff Boundy (who does frequent this site on occasion). Jeff, of course, is an expert, and if the record is his, it is fu...
by Robert Hansen
February 16th, 2012, 10:50 pm
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

Re: New Salamanders for California

That's awesome Robert. I hope lots of people are reading the whole article and seeing how much the understanding of slender relationships in the Kern River area is being defined. Breckenridge slenders being considered the same species as the original relictus but pulled out along with that apparent...
by Robert Hansen
February 16th, 2012, 10:10 pm
Forum: The Forum
Topic: Juvie Thamnophis ID needed
Replies: 5
Views: 1001

Re: Juvie Thamnophis ID needed

T. elegans terrestris
by Robert Hansen
February 11th, 2012, 10:19 pm
Forum: The Forum
Topic: Where most field guides fail..
Replies: 15
Views: 2306

Re: Where most field guides fail..

Lampropeltis triangulum (aka "milksnake/s") will eventually be partitioned into multiple species; L. elapsoides has already been split off, and it's just a matter of time until research currently underway gets published and blows up the rest of the group into X number of species...4, 5, 6 or more??...
by Robert Hansen
February 9th, 2012, 9:25 pm
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

Re: New Salamanders for California

Mike Waters wrote:Does this mean that the fairviews are bramei now?
yes sir!
by Robert Hansen
February 9th, 2012, 8:14 pm
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

Re: New Salamanders for California

Wrong link...full article can be found here.

http://ifile.it/vie74al
by Robert Hansen
February 9th, 2012, 8:00 pm
Forum: The Forum
Topic: New Salamanders for California
Replies: 16
Views: 2206

New Salamanders for California

For fans of gummy lizards... Zootaxa 3190: 1–30 (10 Feb. 2012) Morphological and molecular diversification of slender salamanders (Caudata: Plethodontidae: Batrachoseps ) in the southern Sierra Nevada of California with descriptions of two new species ELIZABETH L. JOCKUSCH (USA), IÑIGO MARTÍNEZ-SOLA...
by Robert Hansen
February 5th, 2012, 9:47 am
Forum: The Forum
Topic: How the Dodgers destroyed kingsnakes in L.A.-a true story
Replies: 63
Views: 4805

Re: How the Dodgers destroyed kingsnakes in L.A.-a true stor

Brian:

Thanks for the interesting history lesson and powerful images. Wow.

BH
by Robert Hansen
February 4th, 2012, 6:13 pm
Forum: The Forum
Topic: It's official - I get to look for Shasta Batrachoseps
Replies: 11
Views: 809

Re: It's official - I get to look for Shasta Batrachoseps

Michael:

I checked with Iñigo and he did not personally examine the USNM specimens. While I have little doubt that they are attenuatus—kind of by geographic default—having live stuff from there will be important. And you might find some new spots, too. Good hunting!

BH
by Robert Hansen
February 1st, 2012, 10:20 pm
Forum: The Forum
Topic: Possible techniques for combating pythons in the glades
Replies: 16
Views: 2261

Re: Possible techniques for combating pythons in the glades

Fieldnotes wrote:Just tell people that Python meat is an aphrodisiac… worked well to eradicate other species like sea turtles and rhinos.
I think Will is onto something here...I can envision the marketing campaign: "Watch your python spring to life!" :lol:
by Robert Hansen
January 30th, 2012, 6:21 am
Forum: The Forum
Topic: Shasta County Field Report - Jan 28
Replies: 11
Views: 1285

Re: Shasta County Field Report - Jan 28

Michael: Some nice finds. I would be surprised if the USNM specimens are not correctly ID'd to genus, but it's certainly worth checking. Have you seen the 2007 paper (Martinez-Solano et al.) that details molecular variation in the species? If not, I can email you a pdf. Cheers, BH That's true, ever...
by Robert Hansen
January 29th, 2012, 10:58 pm
Forum: The Forum
Topic: Shasta County Field Report - Jan 28
Replies: 11
Views: 1285

Re: Shasta County Field Report - Jan 28

Michael:

Some nice finds. I would be surprised if the USNM specimens are not correctly ID'd to genus, but it's certainly worth checking. Have you seen the 2007 paper (Martinez-Solano et al.) that details molecular variation in the species? If not, I can email you a pdf.

Cheers,

BH
by Robert Hansen
January 19th, 2012, 10:18 pm
Forum: Board Line
Topic: Protecting yourself when out in the field. Way out!!!
Replies: 220
Views: 69849

Re: Protecting yourself when out in the field. Way out!!!

Aaron wrote:I carry an old Spanish sword.
And with those bear-proof chaps, you are an interesting sight :)
by Robert Hansen
January 15th, 2012, 9:26 pm
Forum: The Forum
Topic: Hmm...possible San Mateo calking range extension? Hubbs?
Replies: 67
Views: 5962

Re: Hmm...possible San Mateo calking range extension? Hubbs?

Per Mr. Vabbley: "This king is around 20 years old and thats estimated by her size, it could have eaten hundreds of SFGS in its long life."

He must be really good to determine the snake's age like that :)
by Robert Hansen
January 15th, 2012, 9:17 pm
Forum: The Forum
Topic: Blacktail Rattlesnakes- King of Rattlesnake Sympatry
Replies: 52
Views: 11122

Re: Blacktail Rattlesnakes- King of Rattlesnake Sympatry

All: Thanks for the photos-they are awesome. But I am curious about the title "King of Sympatry" My question is, how do they do it? How do the differentiate themselves from all the other species they are sympatric with? Answers are greatly appreciated. Robert I think Rich or Brendan can answer this...
by Robert Hansen
January 11th, 2012, 8:27 pm
Forum: The Forum
Topic: Blacktail Rattlesnakes- King of Rattlesnake Sympatry
Replies: 52
Views: 11122

Re: Blacktail Rattlesnakes- King of Rattlesnake Sympatry

Amazing pics of amazing snakes. Here are some nigrescens from both eastern and western Mexico, starting with San Luis Potosí (vic. Armadillo de los Infantes). http://www.fototime.com/7DB444C7E834DF3/orig.jpg Photographed in situ on a rock cut at night in Nuevo León (vic. Aramberri) http://www.fototi...
by Robert Hansen
January 11th, 2012, 7:44 pm
Forum: The Forum
Topic: New snake hunting gear: laser zapper!
Replies: 28
Views: 4697

Re: New snake hunting gear: laser zapper!

But is it effective against the Leviathan?
by Robert Hansen
January 11th, 2012, 6:26 pm
Forum: The Forum
Topic: New snake hunting gear: laser zapper!
Replies: 28
Views: 4697

Re: New snake hunting gear: laser zapper!

You couldn't wait until April 1st?
by Robert Hansen
January 11th, 2012, 6:09 pm
Forum: The Forum
Topic: Madera County survey 2012
Replies: 17
Views: 1643

Re: Madera County survey 2012

Brian Hubbs wrote:Uh, that's...nice...Bob...but they don't have shells, ... :lol:
Not yet anyway :)
by Robert Hansen
January 11th, 2012, 8:46 am
Forum: The Forum
Topic: Madera County survey 2012
Replies: 17
Views: 1643

Re: Madera County survey 2012

Aren't there several 'hard to find' slenders in that general vicinity? jim There is a single species of Batrachoseps ( gregarius ) in Madera Co. To the north in Mariposa Co. is the southern range limit for B. diabolicus (Hell Hollow slender salamander), and in the next county south (Fresno Co.) one...
by Robert Hansen
January 10th, 2012, 10:28 pm
Forum: The Forum
Topic: Madera County survey 2012
Replies: 17
Views: 1643

Re: Madera County survey 2012

Toss in a gophersnake and nor pac.. there's the spring survey. Meaning that that is, in your opinion, all there is to find in Madera County? Madera County has been pretty well sampled over the years. All of the typical Sierran species are present, but Arboreal Salamanders reach their southern range...
by Robert Hansen
December 17th, 2011, 5:27 am
Forum: The Forum
Topic: USGS Desert Tortoise Project: Part 5
Replies: 31
Views: 13005

Re: USGS Desert Tortoise Project: Part 5

Truly an outstanding post. Being so thoroughly immersed in a place for so long seems to have paid off for you (and us, your readers). You've left us with much to ponder and appreciate.

Cheers,

BH
by Robert Hansen
December 13th, 2011, 8:49 am
Forum: The Forum
Topic: Kern County - diverse in the database
Replies: 22
Views: 2525

Re: Kern County - diverse in the database

Lots of cool Pit pics. I agree that you've got either a two or three-way zone of intergradation here. I've found annectens -type snakes on Tejon Ranch just E of Lebec, with typical catenifer all along the northern flank of the Tehachapis. No surprise that you'd pick up deserticola influence on the ...
by Robert Hansen
December 12th, 2011, 7:50 pm
Forum: The Forum
Topic: Kern County - diverse in the database
Replies: 22
Views: 2525

Re: Kern County - diverse in the database

Now that's cool. Will Breckenridge or anything else be published along with it?

yes :)
by Robert Hansen
December 12th, 2011, 6:47 pm
Forum: The Forum
Topic: Kern County - diverse in the database
Replies: 22
Views: 2525

Re: Kern County - diverse in the database

Lots of cool Pit pics. I agree that you've got either a two or three-way zone of intergradation here. I've found annectens -type snakes on Tejon Ranch just E of Lebec, with typical catenifer all along the northern flank of the Tehachapis. No surprise that you'd pick up deserticola influence on the s...
by Robert Hansen
December 12th, 2011, 6:41 pm
Forum: The Forum
Topic: Kern County - diverse in the database
Replies: 22
Views: 2525

Re: Kern County - diverse in the database

My fairviews are in the DB as relictus. Awesome - I just see that now. You're the only one that has any in the database. Most Fairviews are probably in Tulare County, like the ones you found, but I think they would creep into Kern County just a little as well, which is why I included them in this p...
by Robert Hansen
November 28th, 2011, 9:47 pm
Forum: Reading Room
Topic: "Venomous" Bites from Non-Venomous Snakes, Critical Analysis
Replies: 16
Views: 7913

Re: "Venomous" Bites from Non-Venomous Snakes, Critical Anal

Just a heads up to anyone contemplating a purchase of this book. Although this is a nice hard-bound book with a color cover, ALL of the internal figures/photos, etc. are in black & white I just want to clarify that your comments pertain to the colubrid-bite-book that prompted this thread, and NOT t...
by Robert Hansen
November 28th, 2011, 6:13 am
Forum: The Forum
Topic: RFI - Ecuadorian Herps Book
Replies: 3
Views: 1152

Re: RFI - Ecuadorian Herps Book

http://www.fototime.com/5B35FCA73167F98/standard.jpg Serpientes de Ecuador (in Spanish) is a large (ca. 7 x 10 in., 538 pages), hardcover book, complete with keys and mediocre but serviceable color photos. Lots of scientific detail. A reference book rather than something to travel with, but it migh...
by Robert Hansen
November 1st, 2011, 5:19 am
Forum: The Forum
Topic: An uncomfortable question
Replies: 66
Views: 4843

Re: An uncomfortable question

acetone (another chemical that would be difficult to obtain for most folks). You can purchase acetone at any home improvement or hardware store. Very common cleaning solution. Good to know! I only recall messing with it in 5-gallon drums in my old science teaching days, and assumed it was restricted.
by Robert Hansen
October 31st, 2011, 5:01 pm
Forum: The Forum
Topic: An uncomfortable question
Replies: 66
Views: 4843

Re: An uncomfortable question

John Simmons, in his wonderfully thorough book "Herpetological Collecting and Collections Management" (2002. SSAR Herp. Circular 31, 153 pp.) offers a laundry list of controlled substances for dispatching reptiles. However, he also mentions a method I'd not heard of before—placing the specimen in a ...
by Robert Hansen
October 24th, 2011, 5:58 pm
Forum: The Forum
Topic: Very strange!
Replies: 11
Views: 3208

Re: Very strange!

PM me if you'd like a pdf of the article upon which the news report was based, and I'll be happy to put you in touch with the authors as well. It's clear that parthenogenesis in snakes is not as rare as once thought, but nobody knows how common or how taxonomically widespread it might be.

Cheers,

BH
by Robert Hansen
October 21st, 2011, 2:39 pm
Forum: Herpetoculture Forum
Topic: Diet manipulation in incubation via scenting...any ideas?
Replies: 10
Views: 2447

Re: Diet manipulation in incubation via scenting...any ideas

Jon Coote suggested this in an article published in 2000 (you can download a pdf from here: http://www.sierraherps.com/bibliography), but did not follow up.
by Robert Hansen
October 3rd, 2011, 9:23 pm
Forum: Herpetoculture Forum
Topic: Inbreeding in herpetoculture
Replies: 45
Views: 13598

Re: Inbreeding in herpetoculture

Rick said: "In the wild, typically 90% or greater would die in the first season." This has always intrested me because studies I've heard quoted have shown poor surivorship for released animals. If there was a captive reintroduction program and 90% of the released animals died would it be considere...
by Robert Hansen
September 26th, 2011, 1:25 pm
Forum: The Forum
Topic: Striped, Hypo ringneck.
Replies: 27
Views: 2964

Re: Striped, Hypo ringneck.

Rick Staub wrote:Nice Dan. Can you cross that with a Regal to get some size on it. :)
I second Rick's plan :)
by Robert Hansen
September 26th, 2011, 1:21 pm
Forum: Board Line
Topic: In Memoriam
Replies: 23
Views: 7056

Re: In Memoriam

The obit that CNAH ran was crafted by Pianka himself and has been part of his university web page for years, with a disclaimer that its author was not yet dead. Apparently, somebody got hookwinked.

http://uts.cc.utexas.edu/~varanus/obit.html
by Robert Hansen
September 15th, 2011, 9:42 am
Forum: FHF Image Lab
Topic: Which photo do you like? (updated photo)
Replies: 13
Views: 3186

Re: Which photo do you like?

1 and 3 are superb images...congrats!
by Robert Hansen
September 11th, 2011, 7:17 am
Forum: The Forum
Topic: Need coordinates for scute found at Tejon Ranch last Sept.
Replies: 3
Views: 928

Re: Need coordinates for scute found at Tejon Ranch last Sep

Robert: Thanks for your help!