Tetrapetalonema (T.) panamensis (McCoy, 1936) comb. n. (Filarioidea: Onchocercidae) in Colombian Primates, with a Description of the Adults

Abstract

Microfilaria panamensis McCoy, 1936 was identified in the blood of Cebus apella, C. capucinus, C. albifrous, and Saguinus oedipus from various regions in Colombia. Adult worms, recovered from the subcutaneous connective tissues of C. apella and S. oedipus, were identified with this microfilaria and are described as Tetrapetalonema (T.) panamensis (McCoy, 1936) comb. n. This nematode is smaller configuration of the female tail and in the appearance of the spicules, and T. barbascalensis which differs in the placement of the vulva relative to the base of the esophagus and in the structure of the right spicule. The spicular ratio of T. panamensis (1.6 to 2.1) is lower than that of any other member of the subgenus (2.6 to 10.8). The host induced and/or geographic variation of microfilariae and adults of T. panamensis is discussed.

Filarial parasites from the black bear of Japan

“…The features, as seen in T. akitensis, have been reported in the following species: T. dunni, T. marmosetae, T. atelensis, T. obtusa, T. tamarinae and T. mystaxi (Faust, 1935;McCoy, 1936;Dunn and Lambrecht, 1963;Eberhard, 1978). They seem to be present also in T. interstitium and T. llewellyni in their original drawings (Price, 1962), while, they were not present in T. barbascalensis, T. parvum, T. saimiri and T. panamensis in thissu bgenus (Ess linger and Gardiner, 1974;McCoy ,1936;Esslinger, 1981Esslinger, , 1979.…”

“…On the other hand the microfilariae of the other members of the subgenus, which infected monkeys (Platyrhini) in Central or South America, possessed the terminal nucleus at the tail end, so far described in the respective original paper (Faust, 1935;McCoy, 1936;Dunn and Lambrecht, 1963;Nagaty, 1935;Eberhard, 1978;Esslinger and Gardiner, 1974;Esslinger, , 1979Esslinger, , 1981.…”

Review of the genus Mansonella Faust, 1929 sensu lato (Nematoda: Onchocercidae), with descriptions of a new subgenus and a new subspecies

“…However, the differences between the specimens from the two host species are significant, particularly the difference in length between their microfilariae measured in thick blood films, which are 204 (188-222) µm long in C. apella and 243 (231-260) µm long in S. oedipus. The data presented by Esslinger (1979) clearly indicate the presence of two distinct filarial species. The material restudied here originates from the sample collected from C. apella by Esslinger (1979).…”

“…Mansonella (T.) panamensis had originally been described from microfilariae only (McCoy 1936). In his description of the adults, Esslinger (1979) reported this parasite from a number of species of Cebus Erxleben and from Saguinus oedipus (Linnaeus) (Primates, Cebidae), in Colombia. He designated C. apella and S. oedipus as 'hypotype-hosts', listing the measurements of specimens from C. apella first, followed by those from S. oedipus in parentheses.…”

“…He designated C. apella and S. oedipus as 'hypotype-hosts', listing the measurements of specimens from C. apella first, followed by those from S. oedipus in parentheses. While Esslinger (1979) commented on a degree of variation in the size and shape of the adults of M. (T.) panamensis from the two hosts, he nevertheless considered them as cospecific. However, the differences between the specimens from the two host species are significant, particularly the difference in length between their microfilariae measured in thick blood films, which are 204 (188-222) µm long in C. apella and 243 (231-260) µm long in S. oedipus.…”