Announcement, Courtesy
The Center for North American Herpetology, December 12, 2014
Lawrence, Kansas http://www.cnah.org
Cole,
Charles J., Harry L. Taylor, Diana P. Baumann, and Peter Baumann. 2014.
Neaves' Whiptail Lizard: The first known tetraploid parthenogenetic
tetrapod (Reptilia: Squamata: Teiidae). Brevoria, No. 539.
Full paper found at
Abstract:
The first known tetraploid amniote that reproduces through
parthenogenetic cloning by individual females is named and described.
The species originated through hybridization between Aspidoscelis
exsanguis (triploid parthenogen) X Aspidoscelis inornata (diploid
bisexual or gonochoristic species) in the laboratory. We compared
multivariate morphological variation between two lineages that arose
from separate F1 hybrid zygotes in one clutch and among several
generations in those lineages. The tetraploid species is also compared
with its ancestral taxa, with two hybrids of A. exsanguis X A. inornata
that were found in nature at two localities that are 100 km apart in
southern New Mexico, and with three laboratory hybrid males. This will
facilitate identification of field-caught tetraploids in the future.
Holotype.
MCZ R-192219 (5 SIMR 8093), a cloned adult female of the F2 laboratory
reared generation that also cloned herself at the SIMR. She hatched on
August 13, 2008, and her mother was MCZ R-192209 (=SIMR 4919).
Etymology.
The specific epithet, a noun in the genitive singular case, honors Dr.
William B. Neaves, who was awarded a Ph.D. at Harvard University. Dr.
Neaves’ graduate studies on unisexual whiptail lizards (Neaves and
Gerald, 1968, 1969; Neaves, 1969, 1971) provided important early
insights into the molecular genetics, origins, and speciation of
parthenogens through hybridization, as well as the origin of a
tetraploid hybrid lizard of A. exsanguis X A. inornata that he
discovered in the field in Alamogordo, Otero County, New Mexico, which
was the inspiration for the present laboratory hybridization project
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