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Aduriz A, Lanthier I, Lair S, Vergneau-Grosset C. EVALUATION OF MORTALITY CAUSES AND PREVALENCE OF RENAL LESIONS IN ZOO-HOUSED CHAMELEONS: 2011-2022. J Zoo Wildl Med 2024; 55:381-392. [PMID: 38875194 DOI: 10.1638/2023-0023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2024] [Indexed: 06/16/2024] Open
Abstract
Of the 202 species of Chamaeleonidae, 38.6% are globally threatened. Currently, nearly a thousand individual chameleons from 36 different species are kept in zoological institutions worldwide. The objectives of this study were to assess the main mortality causes of chameleons in zoological institutions, the prevalence of renal lesions at necropsy, and the environmental factors associated with renal lesions. An online survey was sent to 245 zoological institutions worldwide to collect information about species and sex distribution, necropsy results, and husbandry parameters. Necropsy reports of the last 10 yr were requested from participating institutions (n = 65) when available. Mortality causes were classified into three categories (open diagnosis, infectious, and noninfectious), and noninfectious causes were further subdivided into seven categories (renal, reproductive, myoarthroskeletal, digestive, ophthalmologic, denutrition/multisystemic, and neoplastic). The prevalence of renal lesions was recorded. Multiple linear regression models were used with the prevalence of renal diseases as the dependent variable, and exhibit minimum and maximum hygrometry; exhibit highest and coolest temperature; as well as minimum, mean, and maximum hygrometry of the geographical area as independent variables, combining all chameleon species with similar environmental requirements. Results were obtained for 14 species (n = 412 individuals). The main mortality causes were infectious (46.8%), noninfectious renal (11.4%), and noninfectious reproductive (10.7%) diseases, with all cases of fatal reproductive diseases reported in females. Of the individuals that underwent renal histopathology, 41.7% displayed renal lesions. There was a tendency towards higher renal lesion prevalence in zoos located in areas with lower mean hygrometry (P = 0.05). Further research studies about infectious, renal, and reproductive diseases of Chamaeleonidae are warranted.
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Affiliation(s)
- Amélie Aduriz
- Faculté de médecine vétérinaire, Département des sciences cliniques, Université de Montréal, Saint-Hyacinthe, QC, J2S 2M2 Canada
| | - Isabelle Lanthier
- Département de pathologie et microbiologie, Université de Montréal, Saint-Hyacinthe, QC, J2S 2M2 Canada
| | - Stéphane Lair
- Faculté de médecine vétérinaire, Département des sciences cliniques, Université de Montréal, Saint-Hyacinthe, QC, J2S 2M2 Canada
| | - Claire Vergneau-Grosset
- Faculté de médecine vétérinaire, Département des sciences cliniques, Université de Montréal, Saint-Hyacinthe, QC, J2S 2M2 Canada,
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Itoh M, Matsumoto N, Hagino K, Sawayama N, Kuwayama M, Yamada K, Toyotome T. Nationwide Survey about the Occurrence of Aspergillosis in Captive Penguins in Zoos and Aquariums in Japan. Animals (Basel) 2023; 13:1913. [PMID: 37370423 DOI: 10.3390/ani13121913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
We surveyed the facilities that were members of the Japan Association of Zoos and Aquariums to clarify the incidence of aspergillosis, which is a major cause of death in captive penguins, and to discern effective preventive measures. Responses were obtained for 2910 penguins in 64 facilities; 73 penguins (2.5%) in 35 facilities had died from aspergillosis during the past 5 years from April 2016 to March 2021. Answers to questions about the rearing environment indicated that aspergillosis occurred significantly more often in facilities where penguins were reared outdoors, were in contact with soil, or were moved outside of the rearing enclosure. Answers to questions about their dead penguins indicated that 76% may have been at individual risk (e.g., young age, old age, molting period, and breeding season) and 54% were thought to be reared in uncomfortable environments (e.g., high temperature, high humidity). Aspergillosis may occur when individual risk factors and uncomfortable environmental factors are added to the risk factors of exposure to Aspergillus, such as the presence of soil. These conditions must be recognized as risk factors for aspergillosis, and appropriate preventive measures, such as avoiding penguin contact with the soil where Aspergillus is expected to be present, can minimize aspergillosis-related deaths.
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Affiliation(s)
- Megumi Itoh
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Hokkaido, Japan
| | - Naoya Matsumoto
- Noboribetsu Marine Park Nixe, Noboribetsu 059-0492, Hokkaido, Japan
- School of Veterinary Medicine, Azabu University, Sagamihara 252-5201, Kanagawa, Japan
| | - Kyogo Hagino
- Noboribetsu Marine Park Nixe, Noboribetsu 059-0492, Hokkaido, Japan
| | - Nanako Sawayama
- Noboribetsu Marine Park Nixe, Noboribetsu 059-0492, Hokkaido, Japan
| | - Miki Kuwayama
- Noboribetsu Marine Park Nixe, Noboribetsu 059-0492, Hokkaido, Japan
| | - Kazutaka Yamada
- School of Veterinary Medicine, Azabu University, Sagamihara 252-5201, Kanagawa, Japan
| | - Takahito Toyotome
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Hokkaido, Japan
- Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Hokkaido, Japan
- Medical Mycology Research Center, Chiba University, Chiba 260-8673, Chiba, Japan
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Thorel M, Mateos-Hernandez L, Mulot B, Azzouni MN, Hodžić A, Gaillot H, Ruel Y, Desoubeaux G, Delaye JB, Obregon D, Wu-Chuang A, de la Fuente J, Bermúdez-Humarán LG, Risco-Castillo V, Leclerc A, Cabezas-Cruz A. Assessment of the Safety and Efficacy of an Oral Probiotic-Based Vaccine Against Aspergillus Infection in Captive-Bred Humboldt Penguins ( Spheniscus humboldti). Front Immunol 2022; 13:897223. [PMID: 35634323 PMCID: PMC9137413 DOI: 10.3389/fimmu.2022.897223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Aspergillosis is a fungal infection caused mainly by Aspergillus fumigatus that often results in respiratory disease in birds. Aspergillosis is a major cause of morbidity and mortality in captive-bred penguin species. Currently, there is no registered vaccine to prevent aspergillosis. Recent research demonstrated that oral administration of gram-negative bacteria expressing high levels of galactose-α-1,3-galactose (α-Gal) modulates anti-α-Gal immunity and protects turkeys from clinical aspergillosis caused by experimental A. fumigatus infection. The role of anti-α-Gal immunity in penguins has not been studied. Here, we tested the distribution of α-1,3-galactosyltransferase (α1,3GT) genes in the fecal microbiome of Humboldt penguins (Spheniscus humboldti). The occurrence of natural anti-α-Gal antibodies (Abs) in sera and eggs of healthy Humboldt penguins was also assessed. A trial was then conducted to test whether oral administration of Escherichia coli Nissle, expressing high α-Gal levels, modulates anti-α-Gal immunity in a colony of Humboldt penguins. Animals in the vaccination and placebo groups were evaluated before the trial and followed for one year for aspergillosis detection using a diagnostic panel including computed tomography scans, capillary zone electrophoresis, 3-hydroxybutyrate levels, and anti-A. fumigatus Abs. Anti-α-Gal Abs were detected in sera (IgM and IgY) and eggs (IgY) of healthy penguins. Microbiota analysis and functional predictions revealed the presence of α1,3GT genes in the microbiota of Humboldt penguins and other penguin species. A strong decrease in anti-α-Gal IgM levels was observed in all animals in the placebo group three months after vaccination protocol. This decrease was not observed in E. coli Nissle-treated penguins. After the vaccination protocol, we found a positive correlation between anti-E. coli IgY and anti-α-Gal IgY in the E. coli Nissle group, suggesting a correlation between the presence of the bacteria and these Abs. During the study period, three penguins exhibited respiratory signs consistent with aspergillosis. Two were from the placebo group whose symptoms resolved with specific treatments, while a single vaccinated individual developed fatal respiratory aspergillosis eight months after the trial. We conclude that E. coli Nissle represents a safe potential probiotic with a protective effect against aspergillosis in Humboldt penguins that deserves to be further explored for therapeutic uses in these animals.
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Affiliation(s)
- Milan Thorel
- ZooParc de Beauval and Beauval Nature, Saint-Aignan-sur-Cher, France
| | - Lourdes Mateos-Hernandez
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Baptiste Mulot
- ZooParc de Beauval and Beauval Nature, Saint-Aignan-sur-Cher, France
| | - Mouna Naila Azzouni
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Adnan Hodžić
- Department of Pathobiology, Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Hugues Gaillot
- ADVETIA Veterinary Hospital Center, Vélizy-Villacoublay, France
| | - Yannick Ruel
- ADVETIA Veterinary Hospital Center, Vélizy-Villacoublay, France
| | - Guillaume Desoubeaux
- CHU de Tours, Service de Parasitologie, Mycologie, Médecine Tropicale, Tours, France
- Université de Tours, Inserm U1100 – Centre d’Etude des Pathologies Respiratoires, Faculté de Médecine, Tours, France
| | - Jean-Baptiste Delaye
- CHU de Tours, Pôle de Biologie médicale, Laboratoire de Médecine Nucléaire In Vitro – Centre Régional de Dépistage Néonatal, Tours, France
| | - Dasiel Obregon
- School of Environmental Sciences, University of Guelph, Guelph, ON, Canada
| | - Alejandra Wu-Chuang
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - José de la Fuente
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ciudad Real, Spain
- Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, United States
| | | | - Veronica Risco-Castillo
- EA 7380 Dynamyc, UPEC, USC, ANSES, Ecole nationale vétérinaire d’Alfort, Université Paris-Est, Maisons-Alfort, France
| | - Antoine Leclerc
- ZooParc de Beauval and Beauval Nature, Saint-Aignan-sur-Cher, France
| | - Alejandro Cabezas-Cruz
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, Maisons-Alfort, France
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