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      Dujardinascaris helicina (Nematoda: Ascarididae) parásito de Crocodylus acutus (Reptilia: Crocodylidae) en Puerto Vallarta, Jalisco, México Translated title: Dujardinascaris helicina (Nematoda: Ascarididae), parasite of Crocodylus acutus (Reptilia: Crocodylidae) in Puerto Vallarta, Jalisco, Mexico

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          Abstract

          Resumen: El cocodrilo de río (Crocodylus acutus, Cuvier, 1807) es una especie protegida en México. En este trabajo se han estudiado los contenidos obtenidos por medio de lavados gástricos a 53 C. acutus, en las áreas del estero el Salado, estero Boca Negra-Boca de Tomates y en la UMA Reptilario Cipactli, ubicadas en Puerto Vallarta, Jalisco, México, con el fin de conocer la helmintofauna de la especie. Se identificó solamente al nemátodo, Dujardinascaris helicina (Molin, 1860). La mayor prevalencia fue del 74% y la abundancia 3.17 en el área del estero Boca Negra-Boca de Tomates; y la menor prevalencia fue del 12%, con una abundancia de 0.76 en los ejemplares en la UMA Reptilario Cipactli. Suponemos que esta diferencia se debe principalmente al tipo de alimento suministrado a los cocodrilos en cautiverio. En esta investigación se registra por primera vez a D. helicina como parásito de C. acutus en la región.

          Translated abstract

          Abstract: The river crocodile (Crocodylus acutus, Cuvier, 1807) is a protected species in Mexico. In this work the stomach contents obtained through gastric lavage of 53 C. acutus from the estuarine systems “El Salado”, “Boca Negra-Boca de Tomates” and from the “UMA (Unidad de Manejo y Conservación de Vida Silvestre” for its meaning in Spanish) Reptilario Cipactli” located in Puerto Vallarta, Jalisco, Mexico were collected to study the helminth fauna of the species. Only Dujardinascaris helicina (Molin, 1860) was identified. The highest prevalence occurred in “Boca Negra-Boca de Tomates” with 74% and an abundance of 3.17, and the lowest in “UMA Reptilario Cipactli” with 12% and an abundance of 0.76. The dissimilarity is assumed to be caused primarily by the different feeding habits between wildlife and captivity raised crocodiles. During this investigation D. helicina is registered for the first time as a parasite for C. acutus in the region.

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          A life-saving maneuver to prevent food-choking.

          H Heimlich (1975)
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            Some helminth parasites from Morelet's crocodile, Crocodylus moreletii, from Yucatan, Mexico.

            An examination of three specimens of the Morelet's crocodile, Crocodylus moreletii Duméril et Bibron, from the Lagoon of Celestún, Yucatan, Mexico revealed the presence of the following eight helminth species: Acanthostomum americanum (Pérez Vigueras, 1956), Pelaezia loossi (Pérez Vigueras, 1956), Telorchis sp. juv., Pseudoneodiplostomum groschafti sp. n. (all trematodes), Dujardinascaris helicina (Molin, 1860), Contracaecum sp. Type 2 larvae, Micropleura sp. and Paratrichosoma recurvum (Solger, 1877) (all nematodes). Pseudoneodiplostomum groschafti sp. n. is established by indication based on the description of specimens from Crocodylus rhombifer from Cuba, given by Groschaft and Barus (1970). Acanthostomum acuti Caballero et Brennes, 1959 is considered a synonym of A. americanum. A. americanum and D. helicina are recorded for the first time from Mexico and Micropleura sp. is the first American representative of the genus recorded outside South America. Findings of A. americanum, Telorchis sp., P. groschafti, D. helicina and Micropleura sp. in C. moreletii represent new host records. Some observations on the early development of D. helicina are provided. All species, except for P. recurvum, are briefly described and illustrated and some problems concerning their morphology, taxonomy and geographical distribution are discussed.
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              Gastric nematodes of the Paraguayan caiman, Caiman yacare (Alligatoridae).

              Examination of the stomach contents of 115 Caiman yacare Daudin, 1802, from Paraguay revealed the presence of the nematodes Brevimulticaecum baylisi (Travassos, 1933), Brevimulticaecum stekhoveni (Baylis, 1947), Contracaecum sp. of Railliet and Henry, 1912, Dujardinascaris paulista (Travassos, 1933), Eustrongylides sp. of Jagerskiold, 1909, Micropleura vazi Travassos, 1933, and Ortleppascaris alata (Baylis, 1947). Nematode prevalence was 28%; greatest species prevalence (14%) was found for B. baylisi. Greatest mean intensity, 25.4, was for Contracaecum sp. All occurrences are new host and distribution records.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rmbiodiv
                Revista mexicana de biodiversidad
                Rev. Mex. Biodiv.
                Instituto de Biología (México, DF, Mexico )
                1870-3453
                2007-8706
                September 2016
                : 87
                : 3
                : 1010-1014
                Affiliations
                [2] San Patricio orgnameUniversidad Nacional Autónoma de México orgdiv1Instituto de Biología Mexico
                [1] Puerto Vallarta orgnameUniversidad de Guadalajara orgdiv1Centro Universitario de la Costa orgdiv2Departamento de Ciencias Biológicas Mexico
                Article
                S1870-34532016000301010
                10.1016/j.rmb.2016.07.017
                ce0c37b0-f9b3-4d54-9622-b3e91fae921b

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 22 September 2015
                : 19 May 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 21, Pages: 5
                Product

                SciELO Mexico


                Prevalence,Nematode,Nemátodo,Prevalencia
                Prevalence, Nematode, Nemátodo, Prevalencia

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