Using reproductive technologies to assess the development of secondary sexual characteristics, ovarian senescence and hermaphroditism in the endangered mountain yellow-legged frog Rana muscosa

Anurans can display a host of intriguing sexual syndromes, including hermaphroditism and sex reversal. Using a multifaceted approach for diagnosing and characterising hermaphroditism in the endangered anuran species Rana mucosa , we tracked changes in female reproductive status using hormone monitor...

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Published inReproduction fertility and development Vol. 33
Main Authors Jacobs, Leah E, Hammond, Talisin T, Gaffney, Patricia M, Curtis, Michelle J, Shier, Debra M, Durrant, Barbara S, Righton, Alison, Williams, Candace L, Calatayud, Natalie E
Format Journal Article
LanguageEnglish
Published Australia 01.06.2021
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Abstract Anurans can display a host of intriguing sexual syndromes, including hermaphroditism and sex reversal. Using a multifaceted approach for diagnosing and characterising hermaphroditism in the endangered anuran species Rana mucosa , we tracked changes in female reproductive status using hormone monitoring, ultrasound examinations, individual life history, fertilisation records and post-mortem findings. Seven individuals originally sexed as females developed secondary male sexual characteristics, behaviour and hormone profiles and, in some cases, had testicular tissue despite having previously laid eggs. Our results suggest that reproductive technologies can shed light on life history patterns and reproductive anomalies that may affect endangered anuran survival.
AbstractList Anurans can display a host of intriguing sexual syndromes, including hermaphroditism and sex reversal. Using a multifaceted approach for diagnosing and characterising hermaphroditism in the endangered anuran species Rana mucosa , we tracked changes in female reproductive status using hormone monitoring, ultrasound examinations, individual life history, fertilisation records and post-mortem findings. Seven individuals originally sexed as females developed secondary male sexual characteristics, behaviour and hormone profiles and, in some cases, had testicular tissue despite having previously laid eggs. Our results suggest that reproductive technologies can shed light on life history patterns and reproductive anomalies that may affect endangered anuran survival.
Author Gaffney, Patricia M
Durrant, Barbara S
Williams, Candace L
Shier, Debra M
Curtis, Michelle J
Jacobs, Leah E
Hammond, Talisin T
Righton, Alison
Calatayud, Natalie E
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  organization: San Diego Zoo Wildlife Alliance, Beckman Center for Conservation Research, 15600 San Pasqual Valley Road, Escondido, CA 92025, USA; and Corresponding author
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  givenname: Talisin T
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  surname: Righton
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  organization: Omaha's Henry Doorly Zoo and Aquarium, 3701 S 10th Street Omaha, NE 68107, USA
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  givenname: Candace L
  surname: Williams
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  organization: San Diego Zoo Wildlife Alliance, Beckman Center for Conservation Research, 15600 San Pasqual Valley Road, Escondido, CA 92025, USA
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  givenname: Natalie E
  surname: Calatayud
  fullname: Calatayud, Natalie E
  organization: San Diego Zoo Wildlife Alliance, Beckman Center for Conservation Research, 15600 San Pasqual Valley Road, Escondido, CA 92025, USA; and Conservation Science Network, 24 Thomas Street, Mayfield, NSW 2304, Australia
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Title Using reproductive technologies to assess the development of secondary sexual characteristics, ovarian senescence and hermaphroditism in the endangered mountain yellow-legged frog Rana muscosa
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