RESUMEN
Morphological and molecular evidence suggest that specimens formerly described as Lacunovermis sp. from Nacella (Patinigera) spp. (Patellogastropoda: Patellidae) belong to a new species of Gymnophalloides Fujita, 1925 . Based on the new information, they are identified as Gymnophalloides nacellae n. sp. The new species differs from Gymnophalloides tokiensis, Gymnophalloides seoi , and Gymnophalloides heardi mainly through the presence of a group of papillae located on the ventral surface between oral and ventral suckers. A detailed morphological study revealed the lack of pars prostatica, a character previously reported in G. seoi , which is why it was formerly placed in the Gymnophallinae. Molecular information proved that G. nacellae is close to G. seoi , being nestled together with Parvatrema representatives. This molecular information, along with the absence of pars prostatica, allows these 2 genera to be placed in Parvatrematinae. An amended diagnosis of Gymnophalloides is provided. Histological sections of mantle epithelium of the limpet show metacercariae attached by their oral and ventral suckers in a similar manner to G. seoi in its host, the oyster Crassostrea gigas . Tissue reaction includes cells of outer mantle epithelium being stretched by sucker attachment, hemocyte infiltration of connective tissue between mantle epitheliums, and abnormal calcareous deposition on the inner surface of the shell.
Asunto(s)
Gastrópodos/parasitología , Trematodos/clasificación , Animales , ADN de Helmintos/química , ADN de Helmintos/aislamiento & purificación , ADN Ribosómico/química , ADN Espaciador Ribosómico/química , Microscopía Electrónica de Rastreo , Datos de Secuencia Molecular , Filogenia , Reacción en Cadena de la Polimerasa , ARN Ribosómico 18S/genética , ARN Ribosómico 5.8S/genética , Trematodos/genética , Trematodos/aislamiento & purificación , Trematodos/ultraestructuraRESUMEN
Excavations at two sites dating from 2000 BC-1900 AD in southeastern areas of the Republic of Korea, revealed the remains of several structures. Examination of the contents suspected privies revealed the presence of eggs from 5 kinds of parasite: Ascaris, Trichuris, Clonorchis, and two species of unknown trematodes. Clonorchis sinensis eggs were found in a soil dating from around AD 668-935. This is the first record of C. sinensis eggs in archaeological materials in the Republic of Korea.
Asunto(s)
Arqueología , Helmintos/aislamiento & purificación , Recuento de Huevos de Parásitos , Suelo/parasitología , Animales , Ascaris lumbricoides/aislamiento & purificación , Clonorchis sinensis/aislamiento & purificación , Corea (Geográfico) , Trichuris/aislamiento & purificaciónRESUMEN
Excavations at two sites dating from 2000 BC-1900 AD in southeastern areas of the Republic of Korea, revealed the remains of several structures. Examination of the contents suspected privies revealed the presence of eggs from 5 kinds of parasite: Ascaris, Trichuris, Clonorchis, and two species of unknown trematodes. Clonorchis sinensis eggs were found in a soil dating from around AD 668-935. This is the first record of C. sinensis eggs in archaeological materials in the Republic of Korea