Showing posts with label DNA. Show all posts
Showing posts with label DNA. Show all posts

Friday, February 2, 2024

Picking the wrong pony: wolves and people in Europe

 The Guardian has the story, within the larger story of controversy about wolves, and endangered species.

A wolf killed the EU president’s precious pony - then the fight to catch the predator began. After being hunted to near extinction, wolves have returned to Europe. But when one killed Ursula von der Leyen’s family pony, it ignited a high-stakes battle. Are the animals’ days numbered? by Patrick Barkham

A wolf killed a pony at night...

"Unluckily for the wolf, and perhaps for the entire wolf population of western Europe, Dolly was a cherished family pet belonging to the president of the European Commission, Ursula von der Leyen, one of the most powerful people in the EU. Last September, a year after Dolly’s death, von der Leyen announced plans that to some wolf-defenders looked like revenge: the commission wants to reduce the wolf’s legal protection.


"Action had already been taken against Dolly’s killer. DNA evidence harvested from the pony’s carcass revealed that the wolf was an individual known as GW950m. This mature male wolf, which heads a pack (a wolf family usually numbering eight to 10) living around the von der Leyen residence, appears to have developed a taste for livestock. DNA tests on other carcasses implicates him in the deaths of about 70 sheep, horses, cattle and goats. Experts believe younger pack members might have copied his hunting methods. Because GW950m was now classified as a “problem wolf”, a permit was issued to allow hunters to shoot him legally (wolves can only be killed under exceptional circumstances, according to EU law). It was the seventh such licence to be issued in Lower Saxony, a state the size of Denmark with a thriving population of at least 500 wolves...

"Against the odds, more than a year after the licence to kill was first issued, GW950m remains at large, living quietly on a diet of mostly deer in forests east of Hanover.

...

"Wolves have adapted swiftly and surely to human-dominated landscapes. But people are struggling to adjust to the wolves. The concentration of packs, von der Leyen declared when announcing the commission’s review of wolf protection laws, “has become a real danger for livestock and potentially also for humans”. In December, the commission proposed to reduce the wolf’s status under the Bern Convention from “strictly protected” to “protected” in order to introduce “further flexibility” – potentially enabling wolves to be hunted and populations reduced across the EU.... “Wolves are a subject that might change elections,” says one German conservationist.

....

"The wolf’s revival in western Europe is actually an interesting accumulation of accidents. Before its return, EU member states including Germany pushed to ensure that this disappearing species was given the highest protection under the EU’s habitats directive in 1992. When the cold war ended, many eastern European farms were abandoned, meaning that Russian populations found it easier to pad westwards. When the wolf reached Germany, it found hiding places on disused military bases – and, initially, sympathy.

“If wolves had returned 50 years ago, they wouldn’t have stood a chance, because our view of nature was very different to today,” says Kenny Kenner, a wolf expert who collects sightings and DNA data on wolves for the Lower Saxony government, and leads walks to educate people about this fascinating, complicated animal. “We see ourselves as part of nature and, much more importantly, as dependent on nature. This led to the possibility that a species as difficult for us as the wolf could come back.”

Sunday, June 11, 2023

Digital data yields suspect in Idaho murders (NYT)

 The NYT has the story of how a wide ranging search of a large variety of digital data  led to an arrest of a suspect (whose trial hasn't yet begun):

Inside the Hunt for the Idaho Killer,” by Mike Baker, New York Times, June 10, 2023

"“Online shopping, car sales, carrying a cellphone, drives along city streets and amateur genealogy all played roles in an investigation that was solved, in the end, as much through technology as traditional sleuthing.

...

"A week after the killings, records show, investigators were on the lookout for a certain type of vehicle: Nissan Sentras from the model years 2019 to 2023. Quietly, they ran down details on thousands of such vehicles, including the owners’ addresses, license plate numbers and the color of each sedan.

"But further scrutiny of the video footage produced more clarity, and on Nov. 25 the police in Moscow asked law enforcement agencies to look for a different type of car with a similar shape: white Hyundai Elantras from the model years 2011 to 2013.

"Just across the state border, at Washington State University, campus police officers began looking through their records for Elantras registered there. 

...

"The hunt broadened as investigators vacuumed up more records and data. They had already sought cellphone data for all phones that pinged cell towers within a half-mile of the victims’ house from 3 a.m. to 5 a.m., according to search warrant filings. 

...

"after getting back data on [one of the victim]’s account on the Tinder dating app, detectives asked for details on 19 specific account-holders, including their locations, credit card information and any “private images, pictures or videos” associated with the accounts.

...

"Investigators were also working with a key piece of evidence: a Ka-Bar knife sheath, branded with a U.S. Marine Corps logo, that had been found next to two of the victims. They initially began looking for local stores that may have sold the weapon, and then fanned out.

"A request to Amazon sought the order histories of account holders who had purchased such knives. A follow-up request to eBay focused on a series of specific users, seeking their purchase histories. Some had connections to the area — including one in Idaho and two in Washington State...

...

"Forensic teams had examined the knife sheath and found DNA that did not belong to any of the inhabitants of the house. They ran the sample through the F.B.I.’s database, which contains millions of DNA profiles of past criminal offenders, but according to three people briefed on the case, they did not get a match.

"At that point, investigators decided to try genetic genealogy, a method that until now has been used primarily to solve cold cases, not active murder investigations.

...

"F.B.I. personnel ...{spent] days building out a family tree that began with a distant relative.

"By the morning of Dec. 19, records show, investigators had a name: Bryan Kohberger. He had a white Elantra. He was a student at a university eight miles from the murder scene.

...

"On Dec. 23, investigators sought and received Mr. Kohberger’s cellphone records. The results added more to their suspicions: His phone was moving around in the early morning hours of Nov. 13, but was disconnected from cell networks — perhaps turned off — in the two hours around when the killings occurred.

"Four days later, agents in Pennsylvania managed to retrieve some trash from Mr. Kohberger’s family residence, sending the material to the Idaho State Police forensic lab. Checking it against their original DNA profile, the lab was able to reach a game-changing conclusion: The DNA in the trash belonged to a close relative of whoever had left DNA on the knife sheath.

"Mr. Kohberger was arrested on Dec. 30."


Monday, December 30, 2019

Some kinds of privacy may be gone forever

Lots of family secrets are revealed by DNA analysis, and it may no longer be possible to keep those secrets.  That is part of the argument made by Dr. Julia Creet, in an interview published at Bill of Health under the title "The End of Privacy?"


Dr. Julia Creet: I made the statement that any idea we had about privacy is over in response to a number of troubling trends in genetic genealogy. DTC genetic tests have revealed long-held family secrets, biological parents and siblings of adoptees, and the identities of sperm and egg donors. In each case, the question of the right of the searcher trumped the rights of those who wanted their privacy protected. In a few cases, sperm donors have sued for invasion of privacy. What these cases show is that even if we think we are protected by the privacy provisions of donor agreements or closed adoptions, genetic tests can leap over those privacy barriers. Many genealogists have declared that there will be no more family secrets in the future. So, family privacy is a thing of the past, which may or may not be a good thing. On a larger scale, law enforcement use of DTC genetic testing databases has demonstrated that data uploaded for one purpose can be used in the future for a completely unanticipated purpose. Without the ability to predict future uses of this information, we cannot put a privacy policy in place that will anticipate all the unforeseen future uses. I think the most telling cases in the last few weeks are the recent warrant that allowed law enforcement access to the GEDmatch database even though most users had opted out of having their results included in searches, and the rather frightening report for Peter Ney about the ease of malware intrusions on genetic genealogy databases.

Saturday, September 7, 2019

DNA tests are revealing medical misconduct in early sperm donation

The NY Times has the story, summarizing many recently discovered cases in which fertility doctors used their own sperm in place of other sperm donors:

Their Mothers Chose Donor Sperm. The Doctors Used Their Own.
Scores of people born through artificial insemination have learned from DNA tests that their biological fathers were the doctors who performed the procedure.

"With the advent of widespread consumer DNA testing, instances in which fertility specialists decades ago secretly used their own sperm for artificial insemination have begun to surface with some regularity. Three states have now passed laws criminalizing this conduct, including Texas, which now defines it as a form of sexual assault.

"Dr. Jody Madeira, a law professor at Indiana University, is following more than 20 cases in the United States and abroad. They have occurred in a dozen states, including Connecticut, Vermont, Idaho, Utah and Nevada, she said, as well as in England, South Africa, Germany and the Netherlands."
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There's an old saying that good judgement comes from experience, and experience comes from bad judgement.  The same thing might be said about well regulated markets...

Thursday, April 4, 2019

A new repugnant use of DNA information--'clarifying' Who is a Jew

The Jerusalem Post has the story:
CHIEF RABBINATE ADMITS USING DNA TESTS TO HELP DETERMINE JEWISH STATUS
Orthodox organizations denounce the use of DNA testing as contrary to Jewish law

"Chief Rabbi David Lau has admitted for the first time that the Chief Rabbinate and the state Rabbinical Courts use DNA testing in certain circumstances to help determine whether a person is Jewish.

The admission is likely to generate outrage among mainstream religious-Zionist and Modern Orthodox groups, given that Jewish law does not recognize the validity of DNA testing to prove Jewishness."