Woodland Salamander Population Research :
Woodland Salamander Population Research
Ambystomatidae :
Ambystomatidae 1 genus
Ambystoma
30 species
Ambystoma jeffersonianum (Jefferson)
Ambystoma laterale (blue spotted)
Ambystoma maculatum (spotted)
Slide 9:
Blue-spotted salamander hybridizes with the Jefferson salamander
The hybrid is either
A. platineum
JJL
Or
A. tremblayi
JLL
Slide 10:
hybrid reproduces gynogenetically.
sperm from a host species is needed to activate the egg development but makes no genetic contribution (Spolsky 1992)
Therefore, the hybrid species are dependent upon one of the parental species
Slide 11:
However, additional hybrid forms such as
triploid males
tetraploid and diploid females
have been found
indicating that some offspring retain genetic material from two parents
As a result, the Jefferson complex is listed as a “species of greatest conservation need” by the New York DEC
Study :
Study Mark and Recapture study
Toe-clipping
Slide 13:
Excised tissue
Used to get a more clear representation of the population genetics
BUT… :
BUT…
No IACUC!!! :
No IACUC!!! (Institutional Animal Care and Use Committee)
References :
References http://www.mass.gov/dfwele/dfw/nhesp/species_info/nhfacts/ambystoma_jeffersonianum.pdf
http://www.discoverlife.org/20/q