Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>)
Polar bears (<i>Ursus maritimus</i>) face a number of challenges that threaten the survival of the species. Captive breeding represents one essential facet of species conservation, but aspects of the polar bear’s reproductive physiology, such as follicle maturation, coitus-induced ovulat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Life |
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| Online Access: | https://www.mdpi.com/2075-1729/14/1/105 |
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| author | Ellison D. Aldrich Dean A. Hendrickson Todd L. Schmitt Hendrik H. Nollens Gisele Montano Karen J. Steinman Justine K. O’Brien Todd R. Robeck |
| author_facet | Ellison D. Aldrich Dean A. Hendrickson Todd L. Schmitt Hendrik H. Nollens Gisele Montano Karen J. Steinman Justine K. O’Brien Todd R. Robeck |
| author_sort | Ellison D. Aldrich |
| collection | DOAJ |
| description | Polar bears (<i>Ursus maritimus</i>) face a number of challenges that threaten the survival of the species. Captive breeding represents one essential facet of species conservation, but aspects of the polar bear’s reproductive physiology, such as follicle maturation, coitus-induced ovulation, and pseudopregnancy, are poorly characterized and present challenges for enhancing natural reproductive success and the application of advanced reproductive techniques. Due to the absence of a reliable transrectal or transabdominal ultrasound method for ovarian examination in the species, the ovaries of two adult female polar bears were examined laparoscopically to evaluate the feasibility of surgical access to the ovaries, oviduct, and uterus. The minimally invasive procedure was easily and rapidly performed in both bears and all procedures. Direct visual assessment of the ovary was possible after dissection of a fatty bursal sac, which completely enclosed the ovaries. In the second bear, laparoscopic manipulation of the ovary to draw it closer to the body wall enabled transcutaneous ultrasound. Laparoscopy may be a valuable tool to aid in the application of advanced reproductive technologies in polar bears. |
| first_indexed | 2024-03-08T10:44:39Z |
| format | Article |
| id | doaj.art-bf26ab09168848349e185a781f5389df |
| institution | Directory Open Access Journal |
| issn | 2075-1729 |
| language | English |
| last_indexed | 2024-03-08T10:44:39Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Life |
| spelling | doaj.art-bf26ab09168848349e185a781f5389df2024-01-26T17:21:02ZengMDPI AGLife2075-17292024-01-0114110510.3390/life14010105Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>)Ellison D. Aldrich0Dean A. Hendrickson1Todd L. Schmitt2Hendrik H. Nollens3Gisele Montano4Karen J. Steinman5Justine K. O’Brien6Todd R. Robeck7School of Veterinary Sciences, Massy University, Palmerston North 4442, New ZealandCollege of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80521, USASeaWorld of California, 500 Sea World Drive, San Diego, CA 92109, USASand Diego Zoo Wildlife Alliance, 15500 San Pasqual Valley Road, Escondido, CA 92027, USASpecies Preservation Laboratory, SeaWorld Parks and Entertainment Corporation, 2595 Ingraham Road, San Diego, CA 92109, USASpecies Preservation Laboratory, SeaWorld Parks and Entertainment Corporation, 2595 Ingraham Road, San Diego, CA 92109, USATaronga Conservation Society Australia, Mosman, NSW 2088, AustraliaSpecies Preservation Laboratory, SeaWorld Parks and Entertainment Corporation, 2595 Ingraham Road, San Diego, CA 92109, USAPolar bears (<i>Ursus maritimus</i>) face a number of challenges that threaten the survival of the species. Captive breeding represents one essential facet of species conservation, but aspects of the polar bear’s reproductive physiology, such as follicle maturation, coitus-induced ovulation, and pseudopregnancy, are poorly characterized and present challenges for enhancing natural reproductive success and the application of advanced reproductive techniques. Due to the absence of a reliable transrectal or transabdominal ultrasound method for ovarian examination in the species, the ovaries of two adult female polar bears were examined laparoscopically to evaluate the feasibility of surgical access to the ovaries, oviduct, and uterus. The minimally invasive procedure was easily and rapidly performed in both bears and all procedures. Direct visual assessment of the ovary was possible after dissection of a fatty bursal sac, which completely enclosed the ovaries. In the second bear, laparoscopic manipulation of the ovary to draw it closer to the body wall enabled transcutaneous ultrasound. Laparoscopy may be a valuable tool to aid in the application of advanced reproductive technologies in polar bears.https://www.mdpi.com/2075-1729/14/1/105polar bearlaparoscopyovaryultrasoundreproduction |
| spellingShingle | Ellison D. Aldrich Dean A. Hendrickson Todd L. Schmitt Hendrik H. Nollens Gisele Montano Karen J. Steinman Justine K. O’Brien Todd R. Robeck Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>) Life polar bear laparoscopy ovary ultrasound reproduction |
| title | Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>) |
| title_full | Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>) |
| title_fullStr | Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>) |
| title_full_unstemmed | Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>) |
| title_short | Laparoscopic Evaluation of the Reproductive Tract in Two Female Polar Bears (Three Procedures) (<i>Ursus maritimus</i>) |
| title_sort | laparoscopic evaluation of the reproductive tract in two female polar bears three procedures i ursus maritimus i |
| topic | polar bear laparoscopy ovary ultrasound reproduction |
| url | https://www.mdpi.com/2075-1729/14/1/105 |
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