Lanfrediella amphicirrus gen. nov. sp. nov. Nematotaeniidae (Cestoda: Cyclophyllidea), a tapeworm parasite of Rhinella marina (Linnaeus, 1758) (Amphibia: Bufonidae).
The family Nematotaeniidae, tapeworms commonly found in the small intestines of amphibians and reptiles, includes 27 recognised species distributed among four genera: Bitegmen Jones, Cylindrotaenia Jewell, Distoichometra Dickey and Nematotaenia Lühe. The taxonomy of these cestodes is poorly defined, due in part to the difficulties of observing many anatomical traits. This study presents and describes a new genus and species of nematotaeniid parasite found in cane toads (Rhinella marina) from eastern Brazilian Amazonia. The cestodes were collected during the necropsy of 20 hosts captured in the urban area of Belém, Pará. The specimens were fixed and processed for light microscopy, scanning electron microscopy (SEM) and three-dimensional (3D) reconstruction. Samples were also collected for molecular analyses. The specimens presented a cylindrical body, two testes and paruterine organs. However, they could not be allocated to any of the four existing nematotaeniid genera due to the presence of two each of dorsal compact medullary testes, cirri, cirrus pouches, genital pores, ovaries and vitelline glands per mature segment. Lanfrediella amphicirrus gen. nov. sp. nov. is the first nematotaeniid studied using Historesin analysis, SEM and 3D reconstruction, and it is the second taxon for which molecular data have been deposited in GenBank.
Laboratório de Biologia Celular e Helmintologia Profa. Dra. Reinalda Marisa Lanfred, Universidade Federal do Pará, Av. Augusto Correa s/n, 66075-900 Belém, PA, Brasil.
Francisco Tiago de Vasconcelos
FT
Melo
Elane Guerreiro
EG
Giese
Adriano Penha
AP
Furtado
Maurílio José
MJ
Soares
Evonnildo Costa
EC
Gonçalves
Antonio Carlos Rosário
AC
Vallinoto
Jeannie Nascimento dos
JN
Santos
D000818:Animals; D001938:Brazil; D002025:Bufonidae / Q000469:parasitology*; D002589:Cestoda / Q000033:anatomy & histology / Q000145:classification* / Q000648:ultrastructure; D005260:Female; D021621:Imaging, Three-Dimensional; D008297:Male; D008855:Microscopy, Electron, Scanning