Feminine Condors Have Offspring With out Males



Feminine Condors Have Offspring With out Males

Written by Conor Gearin

That is BirdNote.

    [California Condor wing flaps, ML 163903, 0:06-0:08]

California Condors are critically endangered. In 1982, there have been solely 22 left. Luckily, a captive breeding program set the species on the trail to restoration, and a whole lot of untamed condors now soar all through the southwest U.S.

However when biologists reviewed the household tree of the condor breeding program, they uncovered a giant shock.

[California Condor call, ML 163901, 0:15-0:16]

The scientists discovered two chicks with DNA that linked them completely to their moms however didn’t match a single male within the system. The chicks had two similar copies for each gene examined. Usually, a chick has one gene copy from the mom and one from the daddy.

This implies the chicks arose from egg cells by no means fertilized by sperm from a male – though their moms had been housed with fertile males. You can say it’s an immaculate condor-ception.

    [California Condor call, ML 163901]
This phenomenon known as parthenogenesis [PAR-then-oh-JEN-eh-sis]. It’s typical in some reptiles and infrequently seen in domesticated chickens and turkeys after they lack entry to mates. However these condors are the primary case of parthenogenesis in a wild chook species the place the females had entry to fertile males.

For condors, which practically went extinct, the power to have chicks with out a mate could possibly be a useful survival talent. 

    [California Condor wing flaps, ML 163903, 0:06-0:08]

For BirdNote, I’m Michael Stein.


Senior Producer: John Kessler
Content material Director: Allison Wilson
Producer: Mark Bramhill
Affiliate Producer: Ellen Blackstone
Managing Producer: Conor Gearin
Bird sounds supplied by The Macaulay Library of Pure Sounds on the Cornell Lab of Ornithology, Ithaca, New York. California Condor ML 163903 and ML 163901 recorded by V. Gerwe. 
BirdNote’s theme was composed and performed by Nancy Rumbel and John Kessler.
© 2022 BirdNote   March 2022        Narrator: ​​Michael Stein

ID# CACO-03-2022-03-18        CACO-01

Reference: https://educational.oup.com/jhered/advance-article/doi/10.1093/jhered/esab…


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