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García-Vásquez A, Pinacho-Pinacho CD, Guzmán-Valdivieso I, Calixto-Rojas M, Rubio-Godoy M. Morpho-molecular characterization of Gyrodactylus parasites of farmed tilapia and their spillover to native fishes in Mexico. Sci Rep 2021; 11:13957. [PMID: 34230589 PMCID: PMC8260806 DOI: 10.1038/s41598-021-93472-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/25/2021] [Indexed: 11/30/2022] Open
Abstract
Translocation of fishes for aquaculture has resulted in the co-introduction of some of their parasites. African cichlid fishes, generically called “tilapias” have been introduced worldwide, along with their monogenean parasites. In a nation-wide survey, we characterised monogeneans of the genus Gyrodactylus infecting farmed “tilapia” throughout Mexico. We also collected native fishes around farms, to look for potential parasite spillover from cultured fishes. Monogeneans were identified taxonomically using morphological and molecular characters. Originally African, pathogenic Gyrodactylus cichlidarum was recorded in every farm surveyed, infecting different “tilapia” varieties, as well as three native cichlid fish species. Previously, we had shown that G. cichlidarum also infects native, non-cichlid fishes in Mexico. We also recorded that Gyrodactylus yacatli is widely distributed in Mexico, infecting cultured “tilapia” and native fishes; and present data indicating that this is a further translocated African parasite. A third, unidentified gyrodactylid infected farmed and native fishes in Chiapas, southern Mexico; we describe the new species as Gyrodactylus shinni n. sp., and provide evidence that this is a third monogenean translocated with African fish. The wide distribution of exotic parasites co-introduced with “tilapia” and their spillover to native fishes may have an important impact on the ichthyofauna in Mexico, one the world’s megadiverse countries.
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Affiliation(s)
- Adriana García-Vásquez
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Carretera antigua a Coatepec 351, 91073, Xalapa, Veracruz, Mexico
| | - Carlos Daniel Pinacho-Pinacho
- Investigador Cátedras CONACyT, Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Carretera antigua a Coatepec 351, 91073, Xalapa, Veracruz, Mexico
| | - Ismael Guzmán-Valdivieso
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Carretera antigua a Coatepec 351, 91073, Xalapa, Veracruz, Mexico
| | - Miguel Calixto-Rojas
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Carretera antigua a Coatepec 351, 91073, Xalapa, Veracruz, Mexico
| | - Miguel Rubio-Godoy
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Carretera antigua a Coatepec 351, 91073, Xalapa, Veracruz, Mexico.
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Caña-Bozada V, Llera-Herrera R, Fajer-Ávila EJ, Morales-Serna FN. Mitochondrial genome of Scutogyrus longicornis (Monogenea: Dactylogyridea), a parasite of Nile tilapia Oreochromis niloticus. Parasitol Int 2021; 81:102281. [PMID: 33401015 DOI: 10.1016/j.parint.2020.102281] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Víctor Caña-Bozada
- Centro de Investigación en Alimentación y Desarrollo, Unidad Mazatlán en Acuicultura y Manejo Ambiental, Mazatlán 82112, Sinaloa, Mexico.
| | - Raúl Llera-Herrera
- Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mazatlán 82040, Sinaloa, Mexico.
| | - Emma J Fajer-Ávila
- Centro de Investigación en Alimentación y Desarrollo, Unidad Mazatlán en Acuicultura y Manejo Ambiental, Mazatlán 82112, Sinaloa, Mexico.
| | - F Neptalí Morales-Serna
- Centro de Investigación en Alimentación y Desarrollo, Unidad Mazatlán en Acuicultura y Manejo Ambiental, Mazatlán 82112, Sinaloa, Mexico; Consejo Nacional de Ciencia y Tecnología (CONACYT), Ciudad de México, Mexico.
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Morales-Serna FN, Caña-Bozada VH, López-Moreno DG, Medina-Guerrero RM, Morales-Serna JA, Fajer-Ávila EJ. In vitro efficacy of two terpenes against ancyrocephalid monogeneans from Nile tilapia. J Parasit Dis 2019; 43:739-742. [PMID: 31749549 DOI: 10.1007/s12639-019-01150-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/11/2019] [Indexed: 12/01/2022] Open
Abstract
Terpenes are naturally produced compounds with a broad range of biological activities. Currently, there is limited information regarding the anthelminthic effect of terpenes against monogenean parasites of fish. The aim of this work was to evaluate the in vitro efficacy of two terpenes [α-terpinene and (+)-limonene oxide] against ancyrocephalid monogeneans found on farmed Nile tilapia (Oreochromis niloticus). (+)-Limonene oxide was more effective in killing these parasites than α-terpinene, with 86 and 90% mortality at concentrations of 36 and 55.4 mg/L, respectively, with a 5-h treatment. The estimated 5-h EC50 of (+)-limonene oxide was 4.8 mg/L. Even though this compound has the potential to be used as an anthelmintic compound in finfish aquaculture, before in vivo experiments are performed, additional studies are needed to find a more effective concentration, as well as to evaluate other terpenic compounds.
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Affiliation(s)
- Francisco N Morales-Serna
- 1CONACYT, Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Mazatlán en Acuicultura y Manejo Ambiental, 82112 Mazatlán, Sinaloa Mexico
| | - Víctor H Caña-Bozada
- 2Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Mazatlán en Acuicultura y Manejo Ambiental, 82112 Mazatlán, Sinaloa Mexico
| | - Dania G López-Moreno
- 2Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Mazatlán en Acuicultura y Manejo Ambiental, 82112 Mazatlán, Sinaloa Mexico
| | - Rosa M Medina-Guerrero
- 2Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Mazatlán en Acuicultura y Manejo Ambiental, 82112 Mazatlán, Sinaloa Mexico
| | - José A Morales-Serna
- 3Instituto de Química Aplicada, Universidad del Papaloapan, Tuxtepec, Oaxaca Mexico
| | - Emma J Fajer-Ávila
- 2Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad Mazatlán en Acuicultura y Manejo Ambiental, 82112 Mazatlán, Sinaloa Mexico
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Efficacy of silver nanoparticles against the adults and eggs of monogenean parasites of fish. Parasitol Res 2019; 118:1741-1749. [PMID: 31049694 DOI: 10.1007/s00436-019-06315-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 04/03/2019] [Indexed: 10/26/2022]
Abstract
Monogeneans are a diverse group of parasites that are commonly found on fish. Some monogenean species are highly pathogenic to cultured fish. The present study aimed to determine the in vitro anthelmintic effect of silver nanoparticles (AgNPs) against adults and eggs of monogeneans in freshwater using Cichlidogyrus spp. as a model organism. We tested two types of AgNPs with different synthesis methodologies and size diameters: ARGOVIT (35 nm) and UTSA (1-3 nm) nanoparticles. Damage to the parasite tegument was observed by scanning electron microscopy. UTSA AgNPs were more effective than ARGOVIT; in both cases, there was a concentration-dependent effect. A concentration of 36 μg/L UTSA AgNPs for 1 h was 100% effective against eggs and adult parasites, causing swelling, loss of corrugations, and disruption of the parasite's tegument. This is an interesting result considering that monogenean eggs are typically tolerant to antiparasite drugs and chemical agents. To the best of our knowledge, no previous reports have assessed the effect of AgNPs on any metazoan parasites of fish. Therefore, the present work provides a basis for future research on the control of fish parasite diseases.
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