The St Lucia whiptail lizard <i>Cnemidophorus vanzoi</i>: A conservation dilemma?. Young, R., Fa, J., Ogrodowczyk, A., Morton, M., Lesmond, S., & Funk, S. ORYX, 40(3):358–361, Department of Forestry, Ministry of Agriculture, Forestry and Fisheries, Castries, St Lucia, 2006. abstract bibtex Uncertainties in species definitions can have important consequences for biodiversity conservation because taxonomic rank is used as a criterion to assess the conservation priorities of threatened organisms. The Vulnerable St Lucia whiptail lizard Cnemidophorus vanzoi, considered a single species, is the sole representative of its genus in the Caribbean region, found on Maria Major and Maria Minor islands off the coast of St Lucia. However, a recent study revealed significant morphological and phylogenetic differences between the two populations and recommended they should be managed as two separate entities. We surveyed the two populations and estimated them to comprise 1,985 and 29 individuals on Maria Major and Minor, respectively. The Maria Minor population is currently at a critically low level and consequently highly susceptible to demographic and genetic stochasticity and catastrophic events, in particular the colonization of invasive mammalian predators. If our goal is to conserve biodiversity and evolutionary potential we face a dilemma in formulating the optimum strategy for the management of these two threatened populations on the species boundary. We discuss some potential management options but also raise this issue for discussion in the conservation biology community. © 2006 FFI.
@ARTICLE{Young2006,
author = {Young, R.P. and Fa, J.E. and Ogrodowczyk, A. and Morton, M. and Lesmond,
S. and Funk, S.M.},
title = {The St Lucia whiptail lizard \textit{Cnemidophorus vanzoi}: A conservation
dilemma?},
journal = {ORYX},
year = {2006},
volume = {40},
pages = {358--361},
number = {3},
abstract = {Uncertainties in species definitions can have important consequences
for biodiversity conservation because taxonomic rank is used as a
criterion to assess the conservation priorities of threatened organisms.
The Vulnerable St Lucia whiptail lizard \textit{Cnemidophorus vanzoi},
considered a single species, is the sole representative of its genus
in the Caribbean region, found on Maria Major and Maria Minor islands
off the coast of St Lucia. However, a recent study revealed significant
morphological and phylogenetic differences between the two populations
and recommended they should be managed as two separate entities.
We surveyed the two populations and estimated them to comprise 1,985
and 29 individuals on Maria Major and Minor, respectively. The Maria
Minor population is currently at a critically low level and consequently
highly susceptible to demographic and genetic stochasticity and catastrophic
events, in particular the colonization of invasive mammalian predators.
If our goal is to conserve biodiversity and evolutionary potential
we face a dilemma in formulating the optimum strategy for the management
of these two threatened populations on the species boundary. We discuss
some potential management options but also raise this issue for discussion
in the conservation biology community. © 2006 FFI.},
address = {Department of Forestry, Ministry of Agriculture, Forestry and Fisheries,
Castries, St Lucia},
keywords = {Caribbean, Cnemidophorus vanzoi, Cryptic species, Distance sampling,
Islands, Speciation, St Lucia whiptail lizard, Translocation},
owner = {eric},
subdatabase = {distance},
timestamp = {2006.11.22}
}
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