Dataset Information

Distinct distribution of Dicrocoelium dendriticum and D. chinensis in Iwate Prefecture, Japan, and a new final host record for D. chinensis.

ABSTRACT: This study dealt with the morphological and molecular identification of Dicrocoelium flukes obtained from Japanese serow (Capricornis crispus) and sika deer (Cervus nippon centralis) in the twelve districts of Iwate Prefecture, Japan. Dicrocoelium dendriticum and D. chinensis were exclusively detected in the western, and coastal and eastern areas of Iwate Prefecture, respectively. This geographically distinct occurrence of the two Dicrocoelium species would be associated with the distribution of the final hosts, sika deer for D. chinensis and Japanese serow for D. dendriticum. This study also reports that Capricornis crispus is a new final host of D. chinensis.

SUBMITTER: Ohtori M

PROVIDER: S-EPMC4221179 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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Distinct distribution of Dicrocoelium dendriticum and D. chinensis in Iwate Prefecture, Japan, and a new final host record for D. chinensis.

Ohtori Maiko M Aoki Mikiko M Itagaki Tadashi T

The Journal of veterinary medical science 20140707 10

This study dealt with the morphological and molecular identification of Dicrocoelium flukes obtained from Japanese serow (Capricornis crispus) and sika deer (Cervus nippon centralis) in the twelve districts of Iwate Prefecture, Japan. Dicrocoelium dendriticum and D. chinensis were exclusively detected in the western, and coastal and eastern areas of Iwate Prefecture, respectively. This geographically distinct occurrence of the two Dicrocoelium species would be associated with the distribution of ...[more]

PMID: 24998394

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Project description:Dirofilaria immitis is a mosquito-borne pathogen that is spreading worldwide, and the associated infection (i.e. dirofilariosis) is becoming a threat to animals and humans living in endemic areas. Little is known about the occurrence and risk of infection of D. immitis in pinnipeds. Here we report dirofilariosis by D. immitis in several pinniped species kept in captivity in Portugal.Animals were housed in an oceanographic park located in Algarve, southern Portugal, a geographical area endemic for canine dirofilariosis. To assess the occurrence of D. immitis, blood was collected from the park's resident pinniped population, which consisted of 16 animals (5 common seals Phoca vitulina, 2 grey seals Halichoerus grypus, 3 California sea lions Zalophus californianus and 6 South African fur seals Arctocephalus pusillus pusillus). Dirofilaria immitis nematodes were detected by real-time PCR and by the presence of circulating antigens. In addition, modified Knott's technique was performed to detect circulating microfilariae. Necropsies and histopathological examination of two animals which died during the study were also conducted.Out of the 16 pinnipeds housed at the park, seven (43.8%) were positive for D. immitis by real-time PCR (3 P. vitulina, 2 Z. californianus and 2 A. p. pusillus), two of which (P. vitulina) were also positive for the nematode's antigen. Additionally, D. immitis microfilariae were detected in one A. p. pusillus. Furthermore, several D. immitis specimens were retrieved from the right ventricle and pulmonary arteries at the necropsy of one P. vitulina and one A. p. pusillus.This study provides new epidemiological data on D. immitis infection in pinnipeds diagnosed through clinical, molecular and pathological findings. Additionally, the South African fur seal is herein reported as a new host for this zoonotic filarioid. The situation herein described could also occur in other parks located in areas where canine dirofilariosis is endemic. Active surveillance and preventive measures of dirofilariosis in pinnipeds on a local and global scale are therefore vital to improve the early diagnosis and control of dirofilariosis.

Dataset Information

Distinct distribution of Dicrocoelium dendriticum and D. chinensis in Iwate Prefecture, Japan, and a new final host record for D. chinensis.

Publications

Distinct distribution of Dicrocoelium dendriticum and D. chinensis in Iwate Prefecture, Japan, and a new final host record for D. chinensis.

Similar Datasets

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