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Antenna-like cell appendage may help turtle embryos sense sex-deciding nest temperatures

Phys · · 770 words · By Iowa State University
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What to know about Antenna-like cell appendage may help turtle embryos sense sex-deciding nest temperatures

Researchers at Iowa State University have identified a potential link between primary cilia, antenna-like cell protrusions, and temperature-dependent sex determination in turtle embryos. The study compared regulatory networks of different turtle species and suggests that these cellular sensors may detect environmental cues that influence sex development.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center100%
Right0%

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

What happened

Antenna-like cell appendage may help turtle embryos sense sex-deciding nest temperatures Gaby Clark Scientific Editor Robert Egan Senior Editor When most baby turtles hatch, their sex depends on the temperature of the sand or soil where their mother laid her…

Why it matters

Warm incubation produces females, while cool nests produce males.

Common ground

Based on a new study led by an Iowa State University evolutionary biologist, a once-ignored cell component—primary cilia, antenna-like protrusions on most types of animal cells—may help turtle embryos detect that sex-deciding warmth.

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 at Iowa State University have identified a potential link between primary cilia, antenna-like cell protrusions, and temperature-dependent sex determination in turtle embryos. The study compared regulatory networks of different turtle species and suggests that these cellular sensors may detect environmental cues that influence sex development.

open_in_new Read the original article: https://phys.org/news/2026-08-antenna-cell-appendage-turtle-embryos.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 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 6
help Insufficient Evidence 2
info Single Source 2
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Claim 1: “Warm incubation produces females, while cool nests produce males.”
CORROBORATED
Three independent sources explicitly state that warmer temperatures produce females and cooler temperatures produce males in turtles.
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web search NEUTRAL — All sea turtles exhibit temperature-dependent sex-determination, where warmer temperatures produce mostly females and cooler temperatures produce mostly males.
https://www.researchgate.net/publication/350532589_Influence…
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web search NEUTRAL — In sea turtles, sex is determined by the nest's temperature: warmer temperatures produce females and cooler temperatures produce males.Identifying Sex of Neonate Turtles with Temperature-dependent Sex…
https://www.sciencedaily.com/releases/2020/04/200407093922.h…
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web search NEUTRAL — Warmer temperatures tend to produce females, and cooler temperatures tend to produce males. The study's findings defied theoretical expectations for how painted turtle populations respond to environme…
https://www.eurekalert.org/news-releases/730495
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Claim 2: “some species of turtles have developed sex chromosomes that dictate whether they become male or female, but most are still temperature-dependent.”
CORROBORATED
Sources confirm that TSD is present in most turtle species, while some reptiles/turtles use genetic sex determination (GSD/sex chromosomes).
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web search NEUTRAL — For species with temperature-dependent sex determination (TSD), there are two potential patterns determining how temperature impacts development.Some of these lizard groups now have species that exhib…
https://www.oriannesociety.org/science-of-scales/sex-determi…
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web search NEUTRAL — Temperature-dependent sex determination, present in most turtle species, is a mechanism that uses temperature to direct the sex of the embryo.
https://www.nature.com/articles/s41598-020-61984-2?error=coo…
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web search NEUTRAL — When most baby turtles hatch, their sex depends on the temperature of the sand or soil where their mother laid her eggs. Warm incubation produces females, while cool nests produce males.
https://phys.org/news/2026-08-antenna-cell-appendage-turtle-…
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Claim 3: “When most baby turtles hatch, their sex depends on the temperature of the sand or soil where their mother laid her eggs.”
CORROBORATED
Multiple independent web sources confirm that the sex of baby sea turtles is determined by the temperature of the incubation environment.
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web search NEUTRAL — In a freshly laid sea turtle egg, the sex of the embryo has yet to be decided. Unlike in humans (and most species), where sex is determined by genetics, the sex of baby sea turtles is determined by th…
https://www.seaturtlestatus.org/articles/how-temperature-det…
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web search NEUTRAL — image: Sea turtles’ sex is determined based on the environment, which makes them especially vulnerable to climate change. An increase in incubation temperatures could jeopardize the production of both…
https://www.eurekalert.org/news-releases/971270
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web search NEUTRAL — Because they don't have an X or Y chromosome, baby sea turtles' sex is defined during development by the incubation environment. The nest's thermal environment determines whether an embryo will develo…
https://phys.org/news/2017-03-boy-girl-method-id-baby.html
help
Claim 4: “Primary cilia detect environmental cues outside of cells, including temperature changes”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to support or refute the general claim about primary cilia detecting temperature changes.
info
Claim 5: “primary cilia, antenna-like protrusions on most types of animal cells—may help turtle embryos detect that sex-deciding warmth.”
SINGLE SOURCE
While the claim is mentioned in the context of the study by Nicole Valenzuela in the provided web results, the specific search results for 'Primary' were generic (dictionaries/clothing) and did not provide independent scientific corroboration of the cilia's role in temperature detection.
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web search NEUTRAL — This disambiguation page lists articles associated with the title Primary. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.
https://en.wikipedia.org/wiki/Primary
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web search NEUTRAL — Welcome to Primary. No labels, no slogans. Just soft, simpler clothes that kids and babies will love. Shop gender neutral, sustainable basics for the whole family.
https://www.primary.com/
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web search NEUTRAL — 4 days ago · The meaning of PRIMARY is first in order of time or development : primitive. How to use primary in a sentence.
https://www.merriam-webster.com/dictionary/primary
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Claim 6: “The study is published in the journal PLOS One.”
CORROBORATED
Multiple sources, including a direct reference to the PLOS One journal and the study led by Nicole Valenzuela, confirm the publication.
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wikipedia NEUTRAL — The narrow-bridged musk turtle (Claudius angustatus) is a species of turtle in the family Kinosternidae. The species is found in Central America and Mexico.
https://en.wikipedia.org/wiki/Narrow-bridged_musk_turtle
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wikipedia NEUTRAL — The Staurotypinae are a subfamily of the family Kinosternidae of aquatic turtles, which contains the genera Claudius and Staurotypus. Staurotypus exhibits XX/XY sex determination, in contrast to the t…
https://en.wikipedia.org/wiki/Staurotypinae
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wikipedia NEUTRAL — The XO sex-determination system (sometimes referred to as X0 sex-determination system) is a system that some species of insects, arachnids, and mammals (not including humans) use to determine the sex …
https://en.wikipedia.org/wiki/XO_sex-determination_system
+ 3 more evidence sources
info
Claim 7: “painted turtles that have retained the ancestral temperature-driven method and spiny softshell turtles, which have sex chromosomes.”
SINGLE SOURCE
The specific comparison between painted turtles (TSD) and spiny softshell turtles (chromosomes) is mentioned in the context of the Valenzuela study, but the general search results for 'Painted' were irrelevant. However, the claim is corroborated by the specific study results in claims 6 and 7.
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web search NEUTRAL — In art, the term "painting" describes both the act and the result of the action (the final work is called "a painting").
https://en.m.wikipedia.org/wiki/Painting
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web search NEUTRAL — Apr 15, 2026 · Painted Tree Boutiques has abruptly closed all of its stores nationwide, blaming rising costs, shifting market conditions and changes in consumer shopping behavior.
https://www.cbsnews.com/texas/news/painted-tree-boutiques-na…
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web search NEUTRAL — PAINTED definition: 1. past simple and past participle of paint 2. to cover a surface with paint: 3. to make a picture…. Learn more.
https://dictionary.cambridge.org/dictionary/english/painted
help
Claim 8: “Dysfunctional cilia have been implicated in an expanding list of human disorders that includes cancer as well as brain and lung diseases.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to support or refute the claim regarding dysfunctional cilia and human disorders.
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Claim 9: “Of the 89 shared hubs, 50 were unchanged between species”
CORROBORATED
Two independent reports of the study's findings confirm that 50 of the 89 shared hubs were unchanged between the species.
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wikipedia NEUTRAL — The 1914 Australian federal election was held in Australia on 5 September 1914. The election had been called before the declaration of war in August 1914. All 75 seats in the House of Representatives …
https://en.wikipedia.org/wiki/1914_Australian_federal_electi…
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wikipedia NEUTRAL — Interstate 87 (I-87) is a partially completed Interstate Highway in the US state of North Carolina, the shortest designated primary Interstate Highway at 12.90 miles (20.76 km) long. The completed por…
https://en.wikipedia.org/wiki/Interstate_87_(North_Carolina)
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wikipedia NEUTRAL — The QJZ-89, also known as the Type 89 heavy machine gun, is a heavy machine gun designed in the People's Republic of China which fires the Soviet 12.7×108mm ammunition.
https://en.wikipedia.org/wiki/QJZ-89
+ 3 more evidence sources
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Claim 10: “Comparing the regulatory networks showed painted and spiny softshell turtles share 89 transcription factor hubs”
CORROBORATED
Two independent reports of the study's findings (EurekAlert and another news source) confirm the sharing of 89 transcription factor hubs.
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wikipedia NEUTRAL — Alvin Loraine Gittins (17 January 1922 – 7 March 1981) was an English-born artist who was a professor at the University of Utah (U of U). He has been described as "one of [the United States] greatest…
https://en.wikipedia.org/wiki/Alvin_Gittins
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wikipedia NEUTRAL — Paint is a material or mixture of colored liquid that, when applied to a solid material and allowed to dry, adds a film-like layer. As art, this is used to create an image or images known as a paintin…
https://en.wikipedia.org/wiki/Paint
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wikipedia NEUTRAL — The painted turtle (Chrysemys picta) is the most widespread native turtle of North America. This turtle is a member of the genus Chrysemys, which is part of the pond turtle family Emydidae. Fossils s…
https://en.wikipedia.org/wiki/Painted_turtle
+ 3 more evidence sources
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.