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Work TM, Dagenais J, Stacy BA, Ladner JT, Lorch JM, Balazs GH, Barquero-Calvo E, Berlowski-Zier BM, Breeden R, Corrales-Gómez N, Gonzalez-Barrientos R, Harris HS, Hernández-Mora G, Herrera-Ulloa Á, Hesami S, Jones TT, Morales JA, Norton TM, Rameyer RA, Taylor DR, Waltzek TB. A novel host-adapted strain of Salmonella Typhimurium causes renal disease in olive ridley turtles (Lepidochelys olivacea) in the Pacific. Sci Rep 2019; 9:9313. [PMID: 31249336 PMCID: PMC6597722 DOI: 10.1038/s41598-019-45752-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/14/2019] [Indexed: 01/01/2023] Open
Abstract
Salmonella spp. are frequently shed by wildlife including turtles, but S. enterica subsp. enterica serovar Typhimurium or lesions associated with Salmonella are rare in turtles. Between 1996 and 2016, we necropsied 127 apparently healthy pelagic olive ridley turtles (Lepidochelys olivacea) that died from drowning bycatch in fisheries and 44 live or freshly dead stranded turtles from the west coast of North and Central America and Hawaii. Seven percent (9/127) of pelagic and 47% (21/44) of stranded turtles had renal granulomas associated with S. Typhimurium. Stranded animals were 12 times more likely than pelagic animals to have Salmonella-induced nephritis suggesting that Salmonella may have been a contributing cause of stranding. S. Typhimurium was the only Salmonella serovar detected in L. olivacea, and phylogenetic analysis from whole genome sequencing showed that the isolates from L. olivacea formed a single clade distinct from other S. Typhimurium. Molecular clock analysis revealed that this novel clade may have originated as recently as a few decades ago. The phylogenetic lineage leading to this group is enriched for non-synonymous changes within the genomic area of Salmonella pathogenicity island 1 suggesting that these genes are important for host adaptation.
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Affiliation(s)
- Thierry M Work
- US Geological Survey, National Wildlife Health Center, Honolulu Field Station, Honolulu, Hawaii, 96850, United States of America.
| | - Julie Dagenais
- US Geological Survey, National Wildlife Health Center, Honolulu Field Station, Honolulu, Hawaii, 96850, United States of America
| | - Brian A Stacy
- NOAA Fisheries, Office of Protected Resources, University of Florida, Gainesville, Florida, 32603, United States of America
| | - Jason T Ladner
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, Arizona, 86011, United States of America
| | - Jeffrey M Lorch
- US Geological Survey, National Wildlife Health Center, Madison, Wisconsin, 53711, United States of America
| | - George H Balazs
- Golden Honu Services of Oceania, Honolulu, Hawaii, 96825, United States of America
| | - Elías Barquero-Calvo
- Escuela de Medicina Veterinaria (EMV), Universidad Nacional Costa Rica, Heredia, 3000, Costa Rica
| | - Brenda M Berlowski-Zier
- US Geological Survey, National Wildlife Health Center, Madison, Wisconsin, 53711, United States of America
| | - Renee Breeden
- US Geological Survey, National Wildlife Health Center, Honolulu Field Station, Honolulu, Hawaii, 96850, United States of America
| | | | - Rocio Gonzalez-Barrientos
- Pathology Area National Service of Animal Health (SENASA), Ministry of Agriculture and Livestock, Heredia, 3000, Costa Rica
| | - Heather S Harris
- NOAA Fisheries West Coast Region, Morro Bay, California, United States of America
| | - Gabriela Hernández-Mora
- Pathology Area National Service of Animal Health (SENASA), Ministry of Agriculture and Livestock, Heredia, 3000, Costa Rica
| | - Ángel Herrera-Ulloa
- Bacteriology Area, National Service of Animal Health (SENASA), Ministry of Agriculture and Livestock, Heredia, 3000, Costa Rica
| | - Shoreh Hesami
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, 32603, United States of America
| | - T Todd Jones
- NOAA Fisheries, Pacific Islands Fisheries Science Center, Honolulu, Hawaii, 96818, United States of America
| | - Juan Alberto Morales
- Escuela de Medicina Veterinaria (EMV), Universidad Nacional Costa Rica, Heredia, 3000, Costa Rica
| | - Terry M Norton
- Georgia Sea Turtle Center/Jekyll Island Authority, Jekyll Island, Georgia, 31527, United States of America
| | - Robert A Rameyer
- US Geological Survey, National Wildlife Health Center, Honolulu Field Station, Honolulu, Hawaii, 96850, United States of America
| | - Daniel R Taylor
- US Geological Survey, National Wildlife Health Center, Madison, Wisconsin, 53711, United States of America
| | - Thomas B Waltzek
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, 32603, United States of America
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Carvajal-Oses MDM, Chacón-Guzmán J, Herrera-Ulloa Á. Optimización en la producción de la microalga marina Nannochloropsis oculata en un fotobiorreactor tubular helicoidal. ACTA ACUST UNITED AC 2018. [DOI: 10.18845/tm.v31i2.3629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
La producción de microalgas ha tomado importancia en los últimos años, debido a sus diversos usos en la producción de biocombustibles, alimentación tanto humana como animal, y en biorremediación; es por ello que la optimización de las tecnologías destinadas a su producción resultan necesarias. En el presente trabajo se implementó y comparó un fotobiorreactor tubular helicoidal con un sistema abierto tradicional para la producción de Nannochloropsis oculata en el Parque Marino del Pacífico, Puntarenas, Costa Rica. En la construcción del fotobiorreactor se utilizó 100 metros de manguera transparente de 1” con un volumen total de 55 L, una estructura cilíndrica metálica (diámetro 0,67 m y 1,90 m de altura), un colector (0,12 m diámetro y 1,25 m de altura) de 15 L de volumen, un desgasificador para eliminar los excedentes de oxígeno, se instaló un aireador para la mezcla del medio de cultivo y finalmente se colocaron ocho lámparas de 32 W alrededor de la estructura metálica. Mientras que el sistema abierto estaba conformado por tanques de fibra de vidrio de 2 m3 de volumen y una manguera para la aireación. Se obtuvo como resultado que con el fotobiorreactor tubular se logró aumentar la densidad algal de 7,5 a 134x 106 cel/mL, la microalga logró permanecer en este sistema hasta 20 días mientras que con el sistema abierto común solamente de 4 a 5 días, redujo el área requerida para la producción de la microalga en un 91% y al reducir las horas hombre necesarias para su funcionamiento logró reducir en un 18% los costos económicos.
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