Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallAncient spotted bat DNA gives scientists a genetic record they can compare with modern and museum samples. A 2015 Colorado Plateau conference abstract describes 118 samples, including two bat mummies dated to 2,084 and 1,336 years before present. The summary does not report enough results to show exactly how those specimens change estimates of today’s population.
What ancient bat samples can reveal
The spotted bat, Euderma maculatum, can be studied across both time and geography. DNA from old specimens adds historical evidence to comparisons with recently collected and museum material. In principle, those comparisons can help researchers investigate genetic diversity and population history—questions that samples collected only today cannot answer on their own.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
Bats (Wild Guide) | $34.95 | Buy on Amazon |
That is what the Colorado Plateau study’s design makes possible; it is not, by itself, proof of a specific population increase, decline, or shift. The available conference summary does not provide full results or detailed population estimates.
What the Colorado Plateau study reports
The 2015 conference abstract, “Two thousand years on the Colorado Plateau: Spotted bat genetic diversity revealed by contemporary, historical, and ancient DNA,” describes 118 samples drawn from recent collections, museum specimens, and mummies. It reports analysis of mitochondrial control-region markers. Two mummy specimens were dated to 2,084 and 1,336 years before present. Read the conference abstract record.
Recommended Free Tools
#1 Best Overall
- Used Book in Good Condition
Those ages refer to the two specimens—not to the age of the species or an entire bat population. The summary also does not fully specify the geographic sampling design, so the sample count should not be read as a complete census of spotted bats across the region.
What the ages and sample types mean
| Evidence | What the summary establishes | What it does not establish |
|---|---|---|
| Recent collections | Included among the 118 samples in the Colorado Plateau study | The complete collection locations and sampling design |
| Museum specimens | Included among the 118 samples | A full breakdown of specimen ages or sample counts by source |
| Mummy specimens | Two are reported, dated to 2,084 and 1,336 years before present | A precise present-day population change or its direction |
| Genetic marker | Mitochondrial control region | Detailed results, estimates, or significance tests in the available summary |
Comparing genetic material across these sources can extend the time span available for studying diversity and history. But the abstract’s sample and method description is not a substitute for the complete results: it does not show precisely how the mummy DNA affects present-day population estimates.
A separate study offers broader historical context
A 2023 range-wide study examined the spotted bat’s historical biogeography using ecological niche models and mitochondrial DNA. Its ecological niche model supported Mexico as much of the species’ Pleistocene-era range. Haplotype patterns and Bayesian Skyline plots were consistent with population expansion from the southwestern United States during the Holocene. The demographic analysis included 27 E. maculatum individuals. Read the 2023 PLOS ONE study.
This is a separate study, not a result derived from the Colorado Plateau mummy samples. Its authors also reported that phylogenies differed among methods, preventing a precise account of colonization history. The findings therefore provide regional historical context, not a definitive reconstruction of every step in the spotted bat’s range expansion.
What can be concluded about today’s population?
The ancient specimens show that researchers can bring genetic evidence from much earlier periods into comparisons with modern and historical material. That makes a longer-term study of spotted bat diversity and population history possible. The available 2015 summary, however, does not establish a particular change in current population size, structure, or trend. Such a claim would require results beyond the sample and method details reported there.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
