10.5061/DRYAD.24CC7
Peacock, Mary M.
University of Nevada Reno
Hekkala, Evon R.
Fordham University
Kirchoff, Veronica S.
University of Nevada Reno
Heki, Lisa G.
United States Fish and Wildlife Service
Data from: Return of a giant: DNA from archival museum samples helps to
identify a unique cutthroat trout lineage formerly thought to be extinct
Dryad
dataset
2017
Oncorhynchus clarkii henshawi
Bayesian clustering analysis
20th and 21st centuries
Museum specimens
2017-10-16T13:23:21Z
2017-10-16T13:23:21Z
en
https://doi.org/10.1098/rsos.171253
68495 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Currently one small, native population of the culturally and ecologically
important Lahontan cutthroat trout (Oncorhynchus clarkii henshawi, LCT,
Federally listed) remains in the Truckee River watershed of northwestern
Nevada and northeastern California. The majority of populations in this
watershed were extirpated in the 1940’s due to invasive species,
overharvest, anthropogenic water consumption and changing precipitation
regimes. In 1977, a population of cutthroat trout discovered in the Pilot
Peak Mountains in the Bonneville basin of Utah, was putatively identified
as the extirpated LCT lacustrine lineage native to Pyramid Lake in the
Truckee River basin based upon morphological and meristic characters. Our
phylogenetic and Bayesian genotype clustering analyses of museum specimens
collected from the large lakes (1872-1913) and contemporary samples
collected from populations throughout the extant range provide evidence in
support of a genetically distinct Truckee River basin origin for this
population. Analysis of museum samples alone identified three distinct
genotype clusters and historical connectivity among water bodies within
the Truckee River basin. Baseline data from museum collections indicate
that the extant Pilot Peak strain represents a remnant of the extirpated
lacustrine lineage. Given the limitations on high quality data when
working with a sparse number of preserved museum samples, we acknowledge
that, in the end, this may be a more complicated story. However, the
paucity of remnant populations in the Truckee River watershed in
combination with data on the distribution of morphological, meristic and
genetic data for Lahontan cutthroat trout, suggest that recovery
strategies, particularly in the large lacustrine habitats should consider
this lineage as an important part of the genetic legacy of this species.
LCTALLPops&Museumdatagenotype data for 6 microsatellite loci
Nevada