return to main index

  mobile - desktop
follow us on facebook follow us on twitter follow us on YouTube link to us on LinkedIn
Zoo Med Turtle Dock  
click here for Nature Zone
Mice, Rats, Rabbits, Chicks, Quail
Available Now at RodentPro.com!
Locate a business by name: click to list your business
search the classifieds. buy an account
events by zip code list an event
Search the forums             Search in:
News & Events: Herp Photo of the Day: Corn Snake . . . . . . . . . .  Herp Photo of the Day: Boa . . . . . . . . . .  All Maryland Reptile Show - July 10, 2021 . . . . . . . . . .  York County Reptile Show - July 11, 2021 . . . . . . . . . .  Richmond Reptile Expo - July 17, 2021 . . . . . . . . . .  Western Maryland Reptile Show - July 24, 2021 . . . . . . . . . .  East Coast Reptile Super Expo - July 24, 2021 . . . . . . . . . .  Hamburg Reptile Show - Aug. 07, 2021 . . . . . . . . . .  All Maryland Reptile Show - Aug. 14, 2021 . . . . . . . . . .  Hampton Roads Exotic Pet Expo - Aug. 21-22, 2021 . . . . . . . . . .  Northern Virginia Reptile Show - Aug. 28, 2021 . . . . . . . . . .  All Maryland Reptile Show - Sept. 11, 2021 . . . . . . . . . . 

full banner - advertise here .50¢/1000 views
Turtles & Tortoises for sale online
pool banner - $50 year

here is my theory

[ Login ] [ User Prefs ] [ Search Forums ] [ Back to Main Page ] [ Back to Box Turtles ] [ Reply To This Message ]
[ Register to Post ]

Posted by: jscrick at Sun Jul 25 12:20:22 2010  [ Report Abuse ] [ Email Message ] [ Show All Posts by jscrick ]  
   

After a great deal of thought, this is what I came up with:

It is a combination of several factors.

1) Box Turtles are homers for sure, but that doesn't mean their home range isn't rather large. I'm going to say, that they are seasonally migrational, much the same as has been proven with several Rattlesnake species. With the proliferation of roadways and the increased frequency of vehicles traveling those roads, Box Turtle mortality has been high for several decades. Lets not forget the habitat destruction/modification driving them out and causing them to move and cross roadways, as well.

2) I'd have to say, in conjunction to the range limiting factors, that DDT or some other long term cumulative pesticide/toxin has resulted in multiple years of breeding failure.

3) If an ordinary Box Turtle has an ordinary lifespan of 40 years, with a reproductive life of 32 to 35 years and breedings are at a high probability of failure, the results would be negative population growth until extinction.

4) As population densities decline over time, adults are required to travel greater distances in order to find a mate, and in so doing the probability of vehicular homicide becomes more likely. Amounts to a population death spiral.

Has anyone studied pesticide/toxins in Box Turtle tissue?

jsc
-----
"As hard as I've tried, just can't NOT do this"
John Crickmer


   

[ Reply To This Message ] [ Subscribe to this Thread ] [ Show Entire Thread ]


<< Previous Message:  Where are the Ornates? - jscrick, Tue Jul 6 10:06:28 2010