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First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity
To date, all captive breeding of the dusky gopher frog, Lithobates sevosus, a federally listed endangered species, has been accomplished using in vitro fertilization (IVF). Here, we describe multievent and highly fecund captive reproduction of dusky gopher frogs driven solely by natural environmenta...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9543472/ https://www.ncbi.nlm.nih.gov/pubmed/35037313 http://dx.doi.org/10.1002/zoo.21672 |
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author | Reichling, Steven B. Cantrell, Jessica Roznik, Elizabeth A. Bogisich, Allison Poo, Sinlan |
author_facet | Reichling, Steven B. Cantrell, Jessica Roznik, Elizabeth A. Bogisich, Allison Poo, Sinlan |
author_sort | Reichling, Steven B. |
collection | PubMed |
description | To date, all captive breeding of the dusky gopher frog, Lithobates sevosus, a federally listed endangered species, has been accomplished using in vitro fertilization (IVF). Here, we describe multievent and highly fecund captive reproduction of dusky gopher frogs driven solely by natural environmental factors. Six pairs of L. sevosus were kept in a 3.7 × 4.4 m(2) outdoor enclosure designed to resemble their natural breeding habitat, which included a pool and three artificial burrows. Modifications to the enclosure that simulated temperatures and conditions within their natural range during winter were added in October and removed in late February. Following a warm, rainy period, five egg masses were laid between March 5 and 11, 2020. The number of oocytes per egg mass was 2300 ± 409 (range = 1341–3565), with the total across all five egg masses being 11,501. Of these oocytes, the hatching rate was 68.58 ± 10.05% (range = 37.53%–95.59%), with a total of 7887 successful hatchlings overall. Clutch sizes were similar to those in the wild and greater than those typically produced using IVF; thus, natural breeding can substantially increase the number of frogs available for reintroduction programs. Although assisted reproductive technologies such as IVF will continue to be useful for ensuring the success of strategic genetic pairings of captive L. sevosus, the new tool of nonassisted reproduction in specifically designed outdoor enclosures is an important advancement for the conservation and recovery of this endangered species. |
format | Online Article Text |
id | pubmed-9543472 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-95434722022-10-14 First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity Reichling, Steven B. Cantrell, Jessica Roznik, Elizabeth A. Bogisich, Allison Poo, Sinlan Zoo Biol Husbandry Reports To date, all captive breeding of the dusky gopher frog, Lithobates sevosus, a federally listed endangered species, has been accomplished using in vitro fertilization (IVF). Here, we describe multievent and highly fecund captive reproduction of dusky gopher frogs driven solely by natural environmental factors. Six pairs of L. sevosus were kept in a 3.7 × 4.4 m(2) outdoor enclosure designed to resemble their natural breeding habitat, which included a pool and three artificial burrows. Modifications to the enclosure that simulated temperatures and conditions within their natural range during winter were added in October and removed in late February. Following a warm, rainy period, five egg masses were laid between March 5 and 11, 2020. The number of oocytes per egg mass was 2300 ± 409 (range = 1341–3565), with the total across all five egg masses being 11,501. Of these oocytes, the hatching rate was 68.58 ± 10.05% (range = 37.53%–95.59%), with a total of 7887 successful hatchlings overall. Clutch sizes were similar to those in the wild and greater than those typically produced using IVF; thus, natural breeding can substantially increase the number of frogs available for reintroduction programs. Although assisted reproductive technologies such as IVF will continue to be useful for ensuring the success of strategic genetic pairings of captive L. sevosus, the new tool of nonassisted reproduction in specifically designed outdoor enclosures is an important advancement for the conservation and recovery of this endangered species. John Wiley and Sons Inc. 2022-01-17 2022 /pmc/articles/PMC9543472/ /pubmed/35037313 http://dx.doi.org/10.1002/zoo.21672 Text en © 2022 The Authors. Zoo Biology published by Wiley Periodicals LLC. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Husbandry Reports Reichling, Steven B. Cantrell, Jessica Roznik, Elizabeth A. Bogisich, Allison Poo, Sinlan First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity |
title | First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity |
title_full | First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity |
title_fullStr | First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity |
title_full_unstemmed | First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity |
title_short | First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity |
title_sort | first natural breeding of the endangered dusky gopher frog (lithobates sevosus) in captivity |
topic | Husbandry Reports |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9543472/ https://www.ncbi.nlm.nih.gov/pubmed/35037313 http://dx.doi.org/10.1002/zoo.21672 |
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