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Seasonal prevalence of antibodies to Leptospira interrogans in Antillean manatees from a landlocked lake in Tabasco, Mexico.
J Wildl Dis. 2014 Jul; 50(3):505-11.JW

Abstract

Factors that alter the dynamics of ecologic systems can influence transmission of infectious diseases and may lead to decreases in natural populations. Leptospirosis is a cosmopolitan disease of zoonotic importance that affects most mammals. At the southern Gulf of Mexico, Antillean manatees (Trichechus manatus manatus) inhabit highly variable environments, with extended floods during the rainy season and drought conditions during the dry season that affect food availability and the thermal environment for manatees. We tested for changes in prevalence and titers of antibodies to 12 serovars of Leptospira interrogans in manatees between dry and rainy seasons. We determined titers for L. interrogans through microscopic agglutination tests (MAT) from 10 manatees, six during the dry season (DS), and six during the rainy season (RS) in Laguna de las Ilusiones, a landlocked lake hosting a population of about 20 manatees. All individuals were antibody positive (titers ≥ 100) to at least one serovar. The serovars bataviae, bratislava, canicola, and icterohaemorrhagiae had overall prevalences ≥ 50%; bataviae, bratislava, and canicola had prevalences ≥ 50% during both seasons. Serovars icterohaemorrhagiae and pyrogenes had prevalences ≥ 50% during DS and pomona, tarassovi, wolfii, and autumnalis during RS. Significant differences in prevalence between seasons were found for pomona, tarassovi, and autumnalis. Titers of tarassovi, wolfii, autumnalis, and bataviae were significantly higher during RS. There was a high prevalence of L. interrogans during the RS independent of high availability of plant foods, coinciding with the epizootiology of the bacteria that are endemic to tropical regions. Another factor possibly influencing prevalence is high anthropogenic pressure at the lake, causing an increase in potential sources of infection. Because of possible cross-reaction in MAT, further research is needed on the molecular discrimination of serovars in animals in the lake.

Authors+Show Affiliations

1 División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Km. 0.5 Carretera Villahermosa-Cárdenas, entronque a Bosques de Saloya, Villahermosa, Tabasco, 86039, México.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24779468

Citation

Aragón-Martínez, Arianna, et al. "Seasonal Prevalence of Antibodies to Leptospira Interrogans in Antillean Manatees From a Landlocked Lake in Tabasco, Mexico." Journal of Wildlife Diseases, vol. 50, no. 3, 2014, pp. 505-11.
Aragón-Martínez A, Olivera-Gómez LD, Jiménez-Domínguez D. Seasonal prevalence of antibodies to Leptospira interrogans in Antillean manatees from a landlocked lake in Tabasco, Mexico. J Wildl Dis. 2014;50(3):505-11.
Aragón-Martínez, A., Olivera-Gómez, L. D., & Jiménez-Domínguez, D. (2014). Seasonal prevalence of antibodies to Leptospira interrogans in Antillean manatees from a landlocked lake in Tabasco, Mexico. Journal of Wildlife Diseases, 50(3), 505-11. https://doi.org/10.7589/2013-05-102
Aragón-Martínez A, Olivera-Gómez LD, Jiménez-Domínguez D. Seasonal Prevalence of Antibodies to Leptospira Interrogans in Antillean Manatees From a Landlocked Lake in Tabasco, Mexico. J Wildl Dis. 2014;50(3):505-11. PubMed PMID: 24779468.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonal prevalence of antibodies to Leptospira interrogans in Antillean manatees from a landlocked lake in Tabasco, Mexico. AU - Aragón-Martínez,Arianna, AU - Olivera-Gómez,León D, AU - Jiménez-Domínguez,Darwin, Y1 - 2014/04/29/ PY - 2014/5/1/entrez PY - 2014/5/2/pubmed PY - 2015/3/3/medline KW - Antillean manatee KW - Leptospira KW - conservation KW - health KW - isolated population KW - reservoirs KW - serovars KW - zoonosis SP - 505 EP - 11 JF - Journal of wildlife diseases JO - J Wildl Dis VL - 50 IS - 3 N2 - Factors that alter the dynamics of ecologic systems can influence transmission of infectious diseases and may lead to decreases in natural populations. Leptospirosis is a cosmopolitan disease of zoonotic importance that affects most mammals. At the southern Gulf of Mexico, Antillean manatees (Trichechus manatus manatus) inhabit highly variable environments, with extended floods during the rainy season and drought conditions during the dry season that affect food availability and the thermal environment for manatees. We tested for changes in prevalence and titers of antibodies to 12 serovars of Leptospira interrogans in manatees between dry and rainy seasons. We determined titers for L. interrogans through microscopic agglutination tests (MAT) from 10 manatees, six during the dry season (DS), and six during the rainy season (RS) in Laguna de las Ilusiones, a landlocked lake hosting a population of about 20 manatees. All individuals were antibody positive (titers ≥ 100) to at least one serovar. The serovars bataviae, bratislava, canicola, and icterohaemorrhagiae had overall prevalences ≥ 50%; bataviae, bratislava, and canicola had prevalences ≥ 50% during both seasons. Serovars icterohaemorrhagiae and pyrogenes had prevalences ≥ 50% during DS and pomona, tarassovi, wolfii, and autumnalis during RS. Significant differences in prevalence between seasons were found for pomona, tarassovi, and autumnalis. Titers of tarassovi, wolfii, autumnalis, and bataviae were significantly higher during RS. There was a high prevalence of L. interrogans during the RS independent of high availability of plant foods, coinciding with the epizootiology of the bacteria that are endemic to tropical regions. Another factor possibly influencing prevalence is high anthropogenic pressure at the lake, causing an increase in potential sources of infection. Because of possible cross-reaction in MAT, further research is needed on the molecular discrimination of serovars in animals in the lake. SN - 1943-3700 UR - https://www.unboundmedicine.com/medline/citation/24779468/Seasonal_prevalence_of_antibodies_to_Leptospira_interrogans_in_Antillean_manatees_from_a_landlocked_lake_in_Tabasco_Mexico_ L2 - http://www.jwildlifedis.org/doi/10.7589/2013-05-102?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -