return to main index

  mobile - desktop
follow us on facebook follow us on twitter follow us on YouTube link to us on LinkedIn
Southwestern Center for Herpetological Research  
Click here for LLL Reptile & Supply
This Space Available
3 months for $50.00
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: Bearded Dragon . . . . . . . . . .  Tinley Reflections: An open letter from Mom . . . . . . . . . .  Greater Cincinnati Herp Society Meeting - Apr 02, 2024 . . . . . . . . . .  Calusa Herp Society Meeting - Apr 04, 2024 . . . . . . . . . .  Southwestern Herp Society Meeting - Apr 06, 2024 . . . . . . . . . .  Hamburg Reptile Show - Apr. 13, 2024 . . . . . . . . . .  St. Louis Herpetological Society - Apr 14, 2024 . . . . . . . . . .  San Diego Herp Society Meeting - Apr 16, 2024 . . . . . . . . . .  Suncoast Herp Society Meeting - Apr 20, 2024 . . . . . . . . . .  DFW Herp Society Meeting - Apr 20, 2024 . . . . . . . . . .  Colorado Herp Society Meeting - Apr 20, 2024 . . . . . . . . . .  Chicago Herpetological Society Meeting - Apr 21, 2024 . . . . . . . . . . 
Southwestern Center for Herpetological Research
full banner - advertise here .50¢/1000 views
click here for Healthy Herp
pool banner - $50 year

RE: Rubber Boa and Rosy Boa

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

Posted by: RichardFHoyer at Fri May 30 11:37:23 2008  [ Report Abuse ] [ Email Message ] [ Show All Posts by RichardFHoyer ]  
   

CK,
Have you seen the following paper?

RF Hoyer
=================================================================

Molecular Ecology (2008) 17, 1918–1929 doi: 10.1111/j.1365-294X.2008.03725.x
© 2008 The Author
Journal compilation © 2008 Blackwell Publishing Ltd
Blackwell Publishing Ltd Good species despite massive hybridization: genetic
research on the contact zone between the water snakes
Nerodia sipedon and N. fasciata in the Carolinas, USA
K. MEBERT
Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA
Abstract
Genomic markers generated with the amplified fragment length polymorphism method
revealed extensive, panmictic-like hybridization along the narrow contact zone between
the water snakes Nerodia sipedon and Nerodia fasciata in the Carolinas, USA. However,
asymmetric distributions of diagnostic markers between both species and low frequencies
of backcrossed hybrids with a high value of interspecific mixture infer selection against
certain genotypes. This is consistent with a pronounced genetic and morphological preponderance
of N. fasciata characters in the hybrid zone. Despite massive hybridization within
the contact zone, the existence of nearly fixed genetic markers and the potential inferiority of
certain hybrid genotypes support the species status of the two taxa and corroborate known,
but nondiagnostic differences in morphology and ecology. This study stretches the
applicability of species concepts to cases, where the genetic compatibility between two
closely related species is very high, yet, they still evolve and persist as independent entities.
Keywords: AFLP, hybridization, incomplete speciation, Nerodia fasciata, Nerodia sipedon, snake
Received 11 March 2007; revision received 8 January 2008; accepted 24 January 2008


   

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


>> Next Message:  RE: Rubber Boa and Rosy Boa - CKing, Fri May 30 12:59:27 2008

<< Previous Message:  Rubber Boa and Rosy Boa - CKing, Wed May 28 18:49:56 2008