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First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique

Reproduction is key to species survival, and reproductive physiology represents a high priority investigative area for conservation biology, as it provides a basic understanding of critical life-history traits, information that is helpful for the establishment of management strategies. Here, we gene...

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Autores principales: Candeias, Ísis Zanini das, da Motta Lima, Caio Filipe, Lemos, Frederico Gemesio, Spercoski, Katherinne Maria, de Oliveira, Claudio Alvarenga, Songsasen, Nucharin, de Barros Vaz Guimarães, Marcelo Alcindo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7210712/
https://www.ncbi.nlm.nih.gov/pubmed/32411373
http://dx.doi.org/10.1093/conphys/coaa039
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author Candeias, Ísis Zanini das
da Motta Lima, Caio Filipe
Lemos, Frederico Gemesio
Spercoski, Katherinne Maria
de Oliveira, Claudio Alvarenga
Songsasen, Nucharin
de Barros Vaz Guimarães, Marcelo Alcindo
author_facet Candeias, Ísis Zanini das
da Motta Lima, Caio Filipe
Lemos, Frederico Gemesio
Spercoski, Katherinne Maria
de Oliveira, Claudio Alvarenga
Songsasen, Nucharin
de Barros Vaz Guimarães, Marcelo Alcindo
author_sort Candeias, Ísis Zanini das
collection PubMed
description Reproduction is key to species survival, and reproductive physiology represents a high priority investigative area for conservation biology, as it provides a basic understanding of critical life-history traits, information that is helpful for the establishment of management strategies. Here, we generated knowledge about the reproductive endocrinology of the hoary fox (Lycalopex vetulus), a small canid (2.5–4 kg) endemic to open areas of the Brazilian Cerrado and listed in the Brazilian National List of Endangered species. Specifically, we utilized non-invasive hormone monitoring methods to assess oestrogen and progestagen metabolites from eight female hoary foxes housed in five zoological institutions in the state of São Paulo—Brazil. We observed the elevations of oestrogen and progestagen metabolites between July and September in six of the eight females. No significant evidence of ovarian activity was observed during other months. Two females, who shared the same enclosure, did not show a pattern of reproductive cyclicity. Based on these characteristics, we concluded that captive hoary foxes are seasonal monoestric, with the beginning of the oestrus cycle occurring mainly in July followed by 2 months of the luteal phase when conception does not occur. We suggest the dosage of faecal metabolites of estradiol and progesterone could be used to differentiate the reproductive period from a non-reproductive period in Lycalopex vetulus females, providing relevant information about their reproductive biology that may contribute to species conservation and management strategies, such as increased ex situ reproductive success.
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spelling pubmed-72107122020-05-14 First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique Candeias, Ísis Zanini das da Motta Lima, Caio Filipe Lemos, Frederico Gemesio Spercoski, Katherinne Maria de Oliveira, Claudio Alvarenga Songsasen, Nucharin de Barros Vaz Guimarães, Marcelo Alcindo Conserv Physiol Research Article Reproduction is key to species survival, and reproductive physiology represents a high priority investigative area for conservation biology, as it provides a basic understanding of critical life-history traits, information that is helpful for the establishment of management strategies. Here, we generated knowledge about the reproductive endocrinology of the hoary fox (Lycalopex vetulus), a small canid (2.5–4 kg) endemic to open areas of the Brazilian Cerrado and listed in the Brazilian National List of Endangered species. Specifically, we utilized non-invasive hormone monitoring methods to assess oestrogen and progestagen metabolites from eight female hoary foxes housed in five zoological institutions in the state of São Paulo—Brazil. We observed the elevations of oestrogen and progestagen metabolites between July and September in six of the eight females. No significant evidence of ovarian activity was observed during other months. Two females, who shared the same enclosure, did not show a pattern of reproductive cyclicity. Based on these characteristics, we concluded that captive hoary foxes are seasonal monoestric, with the beginning of the oestrus cycle occurring mainly in July followed by 2 months of the luteal phase when conception does not occur. We suggest the dosage of faecal metabolites of estradiol and progesterone could be used to differentiate the reproductive period from a non-reproductive period in Lycalopex vetulus females, providing relevant information about their reproductive biology that may contribute to species conservation and management strategies, such as increased ex situ reproductive success. Oxford University Press 2020-05-08 /pmc/articles/PMC7210712/ /pubmed/32411373 http://dx.doi.org/10.1093/conphys/coaa039 Text en © The Author(s) 2020. Published by Oxford University Press and the Society for Experimental Biology. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Candeias, Ísis Zanini das
da Motta Lima, Caio Filipe
Lemos, Frederico Gemesio
Spercoski, Katherinne Maria
de Oliveira, Claudio Alvarenga
Songsasen, Nucharin
de Barros Vaz Guimarães, Marcelo Alcindo
First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
title First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
title_full First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
title_fullStr First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
title_full_unstemmed First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
title_short First assessment of hoary fox (Lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
title_sort first assessment of hoary fox (lycalopex vetulus) seasonal ovarian cyclicity by non-invasive hormonal monitoring technique
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7210712/
https://www.ncbi.nlm.nih.gov/pubmed/32411373
http://dx.doi.org/10.1093/conphys/coaa039
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