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Long-distance bat migration runs on fatty acids, challenging limits of mammal metabolism

Phys · · 829 words · By Forschungsverbund Berlin e V
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What to know about Long-distance bat migration runs on fatty acids, challenging limits of mammal metabolism

Researchers from the Leibniz Institute for Zoo and Wildlife Research and Helmholtz Munich found that Nathusius' pipistrelles utilize fatty acid oxidation to sustain long-distance migration. The study, published in the FASEB Journal, indicates that these bats have a metabolic capacity for burning fats during intense activity that differs from most other mammals.

Propaganda risk 0%
Claims checked 11
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Long-distance bat migration runs on fatty acids, challenging limits of mammal metabolism Lisa Lock Scientific Editor Robert Egan Associate Editor Bats are the only mammals that can actively fly, enabling many species to perform seasonal migrations.

Why it matters

In migratory birds, remaining airborne for many hours is supported by burning fatty acids, something most mammals are incapable of.

Common ground

Scientists at the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) and Helmholtz Munich have now demonstrated that fatty acid oxidation plays a key role in the metabolism of some bats.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the Leibniz Institute for Zoo and Wildlife Research and Helmholtz Munich found that Nathusius' pipistrelles utilize fatty acid oxidation to sustain long-distance migration. The study, published in the FASEB Journal, indicates that these bats have a metabolic capacity for burning fats during intense activity that differs from most other mammals.

open_in_new Read the original article: https://phys.org/news/2026-05-distance-migration-fatty-acids-limits.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 11 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 6
help Insufficient Evidence 2
check_circle Corroborated 2
schedule Pending 1
info
Claim 1: “the scientists observed significantly higher levels of phosphatidylethanolamines with unsaturated fatty acids, as well as several phosphatidylcholines, in the bats sampled during the migration period compared to bats that had not yet migrated.”
SINGLE SOURCE
The provided evidence for this claim consists only of general dictionary definitions of 'migrating' and a Wikipedia page on human migration; there is no scientific evidence provided regarding phosphatidylethanolamines in bats.
travel_explore
web search NEUTRAL — Human migration is the movement of people from one place to another, [1] with intentions of settling, permanently or temporarily, at a new location (geographic region). The movement often occurs over …
https://en.wikipedia.org/wiki/Human_migration
travel_explore
web search NEUTRAL — MIGRATING definition: 1. present participle of migrate 2. When an animal migrates, it travels to a different place…. Learn more.
https://dictionary.cambridge.org/dictionary/english/migratin…
travel_explore
web search NEUTRAL — Define migrating. migrating synonyms, migrating pronunciation, migrating translation, English dictionary definition of migrating. v. mi·grat·ed , mi·grat·ing , mi·grates v. intr. mi·grat·ed , mi·grat·…
https://www.thefreedictionary.com/migrating
info
Claim 2: “The bats studied were captured at the Engure and Pape ornithological research stations in Latvia.”
SINGLE SOURCE
One source confirms the existence of the Pape Ornithological Station in Latvia, but the specific detail that the study bats were captured at both Engure and Pape is not corroborated by multiple independent sources in the provided text.
travel_explore
web search NEUTRAL — A small village that has a rather large net. The Pape Ornithological Station has been active since the 1960s, and its most extravagant feature is its Rybachy-type trap. This trap is a funnel net, abou…
https://ecosystemsinthesky.com/blog/pape-ornithological-stat…
travel_explore
web search NEUTRAL — Latvia is a country in the Baltic region of Northern Europe. It is one of the three Baltic states, along with Estonia to the north and Lithuania to the south.
https://fatbirder.com/world-birding/europe/republic-of-latvi…
travel_explore
web search NEUTRAL — D By the mid-1650s, even the first-year students at Trinity College were able to identify the plants and flowers around Cambridge, as they were being taught (unofficially - none of this was part of th…
https://www.ieltsreading.info/blog/john-ray-and-the-study-of…
help
Claim 3: “Nathusius' pipistrelles migrate seasonally over several thousand kilometers between their summer habitats in north-eastern Europe and their winter habitats in western and southern Europe”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the specific migration routes or distances of Nathusius' pipistrelles.
schedule
Claim 4: “bats hibernate for several months in their winter quarters, something birds cannot do.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
info
Claim 5: “Like all mammals, bats cannot synthesize polyunsaturated fatty acids themselves and must derive them through their diet.”
SINGLE SOURCE
The claim that bats and other mammals cannot synthesize polyunsaturated fatty acids is explicitly stated in one of the web search results.
travel_explore
web search NEUTRAL — May 27, 2026 · Like all mammals, bats cannot synthesize polyunsaturated fatty acids themselves and must derive them through their diet. During the ...
https://phys.org/news/2026-05-distance-migration-fatty-acids…
travel_explore
web search NEUTRAL — Jul 16, 2010 · Although fat is the most energy-dense metabolic fuel, the insolubility of its component fatty acids makes them difficult to transport to working ...
https://academic.oup.com/icb/article/50/3/336/621080
travel_explore
web search NEUTRAL — Apr 13, 2026 · (1) For fat stores, the observed changes include the proportion of unsaturated fatty acids either remaining the same or increasing during ...
https://journals.biologists.com/jeb/article/229/7/jeb251497/…
check_circle
Claim 6: “Bats are the only mammals that can actively fly”
CORROBORATED
Multiple independent sources, including Wikipedia and health/nature sites, confirm that bats are the only mammals capable of true/active flight.
travel_explore
web search NEUTRAL — A number of animals are capable of aerial locomotion, either by active flight, by passive gliding or, in rare occasions, by kiting/ballooning.The majority of flying and glide animals are terrestrial, …
https://en.wikipedia.org/wiki/Flying_and_gliding_animals
travel_explore
web search NEUTRAL — The maternity colonies of the little brown myotis can number up to 1,000 bats. Over 20 million bats live in the Bracken Cave in Texas and eat over 250 tons of insects every night. Bats can eat about a…
https://www.naturallynorthidaho.com/2013/08/bats-only-mammal…
travel_explore
web search NEUTRAL — The New Mexico Department of Health mentions: “Bats are the only mammals capable of true flight.How Do Bats See in the Dark and How it Helps them Fly? Most species of bats are nocturnal which means th…
https://www.jagranjosh.com/general-knowledge/which-mammal-ca…
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Claim 7: “fatty acid oxidation is particularly important during migration in Nathusius' pipistrelles”
CORROBORATED
Two separate web search results specifically link fatty acid oxidation to the migration of Nathusius' pipistrelles.
travel_explore
web search NEUTRAL — May 27, 2026 · "Our findings show how Nathusius' pipistrelles gear up their metabolism for the long migration to their winter roosts by burning fatty acids," ...
https://phys.org/news/2026-05-distance-migration-fatty-acids…
travel_explore
web search NEUTRAL — Apr 14, 2026 · Here, we conducted untargeted metabolomics to reveal the oxidative fuels used by wild caught Nathusius' pipistrelles. We investigated polar ...
https://faseb.onlinelibrary.wiley.com/doi/pdf/10.1096/fj.202…
travel_explore
web search NEUTRAL — Jan 9, 2025 · As a migratory bat species, common noctules are particularly affected by the expansion of wind energy production in Europe, because their flight ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC11711310/
info
Claim 8: “When bats are in flight for longer periods, for example, levels of acyl carnitines in the blood are elevated by around 70%.”
SINGLE SOURCE
The specific figure of 70% increase in acyl carnitines is mentioned in one source. Other provided results for this claim are dictionary definitions of the word 'long' and are irrelevant.
menu_book
wikipedia NEUTRAL — Duration may refer to: The amount of time elapsed between two events Duration of action, how long a drug produces its effects Duration (finance) – the weighted average time until the various cash flo…
https://en.wikipedia.org/wiki/Duration
menu_book
wikipedia NEUTRAL — This is a list of long-duration energy storage or LDES technologies which are energy storage systems designed to discharge electricity for multiple hours to days or longer. These systems are used to s…
https://en.wikipedia.org/wiki/List_of_long-duration_energy_s…
menu_book
wikipedia NEUTRAL — NASA's Long Duration Exposure Facility, or LDEF (pronounced "eldef"), was a cylindrical facility designed to provide long-term experimental data on the outer space environment and its effects on space…
https://en.wikipedia.org/wiki/Long_Duration_Exposure_Facilit…
+ 3 more evidence sources
info
Claim 9: “The findings have been published in the FASEB Journal.”
SINGLE SOURCE
While the search results discuss the study's findings, the specific mention of the 'FASEB Journal' as the publication venue is not explicitly corroborated across multiple independent sources in the provided evidence, though it appears in the context of the study's summary.
travel_explore
web search NEUTRAL — Data were collected from 16 individuals that flew at constant speeds for 30 minutes in a wind tunnel at Lund University, and a further 47 individuals captured during their nightly flights in the wild.…
https://phys.org/news/2026-05-distance-migration-fatty-acids…
travel_explore
web search NEUTRAL — This biochemistry video tutorial focuses on lipids. It discusses the basic structure and functions of lipids such as fatty acids, triglycerides, phospholipi...
https://www.youtube.com/watch?v=7dmoH5dAvpY
travel_explore
web search NEUTRAL — Blood metabolites linked to fatty acid transport increased during longer flight, and the clearest differences involved unsaturated fatty acids rather than saturated ones.
https://www.linkedin.com/posts/phys-org_long-distance-bat-mi…
info
Claim 10: “Scientists at the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) and Helmholtz Munich have now demonstrated that fatty acid oxidation plays a key role in the metabolism of some bats.”
SINGLE SOURCE
The claim is mentioned in one specific web search result discussing bat migration and fatty acid oxidation, but other results are unrelated (cardiovascular outcomes or hyenas).
travel_explore
web search NEUTRAL — Analysis of the metabolites provided clear evidence of the significant role played by fatty acid oxidation during migration. When bats are in flight for longer periods, for example, levels of acyl car…
https://phys.org/news/2026-05-distance-migration-fatty-acids…
travel_explore
web search NEUTRAL — Effect of omega-3 fatty acids on cardiovascular outcomes...
https://www.thelancet.com/journals/eclinm/article/PIIS2589-5…
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web search NEUTRAL — If the new study revealed more “fuel of evolution” than anticipated, it also revealed noticeable differences between species. Spotted hyenas, it turned out, have the most “fuel” of all 15 species stud…
https://www.eurekalert.org/news-releases/953928
help
Claim 11: “During the migration season, Nathusius' pipistrelles feed primarily on aquatic or riparian insects.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the diet of Nathusius' pipistrelles during migration.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.