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Litomosoides pardinasi n. sp. (Nematoda, Onchocercidae) from two species of cricetid rodents in northern Patagonia, Argentina

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Abstract

Seventy-seven cricetid rodents, corresponding to six different species, deposited at the Mammal Collection at Centro Nacional Patagónico, Puerto Madryn, Chubut, were examined for parasites. Litomosoides pardinasi n. sp. is described parasitizing the pleural and abdominal cavities of Phyllotis xanthopygus (Phyllotini) and the abdominal cavity of Oligoryzomys longicaudatus (Oryzomynii) in the northern Patagonia, Argentina. The new species is included in the carinii group, characterized by the presence of a right spicule with a dorsal heel and a terminal cap well cuticularized; left spicule composed with a handle longer or as long as the blade, and the blade constituted by a cuticularized distal filament. Litomosoides pardinasi n. sp. possesses a buccal capsule tubular with an anterior enlargement, and a smooth cavity; four labial and two dorsal cephalic papillae; vulva posterior to the esophagus–intestinal junction; male tail with three to five pairs of symmetric postcloacal papillae; female tail slender; vagina globular and small. This is the first record for a filarioid in a Phyllotini rodent and the southernmost record of any filarioid species worldwide.

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Acknowledgement

We thank Ulyses Pardiñas from CENPAT–CONICET for collecting and identifying the rodents, and loaning us the specimens for dissection. We also thank Maria Cristina Estivariz from CEPAVE for the drawings, and Sergio Seipke for his text revisions (English) which helped improve this manuscript. This study represents part of the PhD thesis of JN. This work was funded by CONICET. JN and GTN are members of CONICET.

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Authors and Affiliations

  1. CEPAVE Centro de Estudios Parasitológicos y de Vectores, CCT La Plata, CONICET- UNLP, Calle 2 # 584 La Plata 1900, Buenos Aires, Argentina

    Juliana Notarnicola & Graciela T. Navone

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  1. Juliana Notarnicola
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  2. Graciela T. Navone
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Correspondence to Juliana Notarnicola.

Appendix

Appendix

List of the host species parasitized with L. pardinasi n. sp., localities, and number of collection.

P. xanthopygus CNP 1941 male (UP 389), vouchers parasites CHMLP 6071; CNP 1942 female (UP 390), vouchers parasites CHMLP 6072 and CHMLP 6073; CNP 1943 male (UP 392), vouchers parasites CHMLP 6074 from Estancia Yuncón, Piedra del Aguila, Neuquén, Argentina (40°20′42″S; 70°07′52″W). P. xanthopygus CNP 1944 female (UP 400), vouchers parasites CHMLP 6075; CNP 1945 female (UP 408), vouchers parasites CHMLP 6076; CNP 1946 female (UP 409), vouchers parasites CHMLP 6077; CNP 1947 male (UP 416), vouchers parasites CHMLP 6078; CNP 1948 female (UP 417), vouchers parasites CHMLP 6079; CNP 1949 male (UP 422), vouchers parasites CHMLP 6080; CNP 1950 female (UP 424), vouchers parasites CHMLP 6081 from Cerrito Piñón, Estancia Collón Curá, Neuquén, Argentina (40°14′57″S; 70°37′54″W). P. xanthopygus CNP 1951 female (UP 425), CHMLP 6067 to 6070 from Las Coloradas, Neuquén, Argentina (39°33′18″S; 70°34′47″W).

O. longicaudatus CNP 1952 male (UP 450), voucher parasites CHMLP 6082, Route 40 and Río Neuquén right margin 300 m downstream from the bridge, Chos Malal, Neuquén, Argentina (37°24′50″S; 70°13′41″W).

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Notarnicola, J., Navone, G.T. Litomosoides pardinasi n. sp. (Nematoda, Onchocercidae) from two species of cricetid rodents in northern Patagonia, Argentina. Parasitol Res 108, 187–194 (2011). https://doi.org/10.1007/s00436-010-2051-3

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