A New Species ofSpiruraBlanchard, 1849 (Nematoda: Spiruridae) Parasite ofHeliosciurus gambianusandXerus erythropus(Rodentia: Sciuridae) in Senegal

Abstract

A new species of Spirura is described from the stomach of Heliosciurus gambianus and Xerus erythropus (Sciuridae). Considering the number of preanal papillae of males, Babero (1973 ) and Giannetto and Canestri Trotti (1995) proposed the subdivision of the genus into 2 groups; those with 4 pairs of preanal papillae (25 species) and with more than 4 pairs of preanal papillae (4 species). Spirura mounporti n. sp. belongs to the second, with 5 pairs of preanal papillae, and differs from Spirura infundibuliformis (McLeod, 1933) Anderson et al., 1993 , Spirura zapi ( Erickson, 1938 ) Chabaud et al., 1965 , Spirura leiperi Gupta and Trivedi, 1985, and Spirura michiganensis Sandground, 1935 in the number of pairs of pre-cloacal papillae. The new species further differs from other species of the genus in having 21 caudal papillae, in the ratio of spicules:body length, and in its morpho-anatomical characters.

Redescription of Spirura guianensis (Nematoda: Spiruridae) from a rare South American Gracile Opossum

“…The evolutionary study of the Spirura genus shows that the most primitive forms are those parasites that infect primates and that the appearance of parasites in marsupials is a later adaptive process (Quentin and Krishnasamy, 1975). Only three species of Spirura have so far been described with the aid of SEM: the Spirura dentata parasite of the mongoose in Spain (Alvarez et al, 1995); Spirura mounporti recovered from African rodents (Diouf et al, 2013); and Spirura mexicana, the first species of this genus described from bats in the New World (Peralta-Rodríguez et al, 2012). This is the sixth study of Spirura guianensis that infect marsupials and the third study of Brazilian marsupials.…”

Spirura carajaensis n. sp. (Nematoda: Spiruridae), parasite of Proechimys roberti Thomas 1901 (Rodentia: Echimyidae) from Brazilian Amazon

“…According to Quetin and Krishnasamy (1975), the genus Spirura is divided into two groups. The first group comprises more primitive species that have 8 -12 pairs of pre-cloacal papillae, with the exemption of S. mounporti (Diouf et al, 2013), which has five pairs of pre-cloacal papillae. The second group is considered more evolved and has approximately 20 species, which have four pairs of pre-cloacal papillae.…”