Evidence map›Paper›PMID 34718632›Full record

ArticleThe Journal of heredity2021

Facultative Parthenogenesis in California Condors.

Oliver A Ryder, Steven Thomas, Jessica Martin Judson, Michael N Romanov, Sugandha Dandekar, Jeanette C Papp, Lindsay C Sidak-Loftis, Kelli Walker, Ilse H Stalis, Michael Mace and 2 more

Erratum issuedOpen access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in The Journal of heredity, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
4.0field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 28 citations in OpenAlex.

  1. Review
  2. Article
  3. Reproductive Sciences to the Rescue of Wild Animal Species.Advances in experimental medicine and biology · 2026
    Review
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  15. Some sexual consequences of being a plant.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 5 institutions in 3 countries.

Oliver A RyderConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.ORCID 0000-0003-2427-763X
Steven ThomasConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.
Jessica Martin JudsonConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.ORCID 0000-0002-0137-654X
Michael N RomanovConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.ORCID 0000-0003-3584-4644
Sugandha DandekarHuman Genetics Department, GenoSeq Core, University of California, Los Angeles, CA 90095, USA.
Jeanette C PappHuman Genetics Department, GenoSeq Core, University of California, Los Angeles, CA 90095, USA.
Lindsay C Sidak-LoftisConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.
Kelli WalkerOregon Zoo, Portland, OR 97221, USA.
Ilse H StalisDisease Investigations, San Diego Zoo Wildlife Alliance, San Diego, CA 92101, USA.
Michael MaceSan Diego Zoo Wildlife Alliance, San Diego, CA 92101, USA.
Cynthia C SteinerConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.
Leona G ChemnickConservation Genetics, Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.
San Diego Zoo Institute for Conservation Research · USZoological Society of San Diego · USUniversity of California, Los Angeles · USOregon Zoo · USUniversity of Kent · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parthenogenesis is a relatively rare event in birds, documented in unfertilized eggs from columbid, galliform, and passerine females with no access to males. In the critically endangered California condor, parentage analysis conducted utilizing polymorphic microsatellite loci has identified two instances of parthenogenetic development from the eggs of two females in the captive breeding program, each continuously housed with a reproductively capable male with whom they had produced offspring. Paternal genetic contribution to the two chicks was excluded. Both parthenotes possessed the expected male ZZ sex chromosomes and were homozygous for all evaluated markers inherited from their dams. These findings represent the first molecular marker-based identification of facultative parthenogenesis in an avian species, notably of females in regular contact with fertile males, and add to the phylogenetic breadth of vertebrate taxa documented to have reproduced via asexual reproduction.

Indexed as

FertilityParthenogenesisFemaleHomozygoteHumansMalePhylogenyCalifornia condorconservation geneticsparthenogenesis

Identifiers

PMID34718632
PMCPMC8683835
OpenAlexW3209503508

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.