Bonamia exitiosa (Haplosporidia) observed infecting the European flat oyster Ostrea edulis cultured on the Spanish Mediterranean coast

被引:24
作者
Carrasco, N. [1 ]
Villalba, A. [2 ]
Andree, K. B. [1 ]
Engelsma, M. Y. [3 ]
Lacuesta, B. [1 ]
Ramilo, A. [2 ]
Gairin, I. [1 ]
Furones, M. D. [1 ]
机构
[1] IRTA St Carles de la Rapita & Catalonias Aquacult, San Carlos de la Rapita 43540, Spain
[2] Ctr Invest Marinas, Vilanova De Arousa 36620, Spain
[3] Cent Vet Inst Wageningen UR, Lab Fish & Shellfish Dis, NL-8200 AB Lelystad, Netherlands
关键词
Bonamia spp; Bonamia exitiosa; Oyster parasite; Ostrea edulis; Marteilia refringens; PROTOZOAN PARASITE; CRASSOSTREA-GIGAS; MYTILUS-GALLOPROVINCIALIS; MARTEILIA-REFRINGENS; PACIFIC OYSTER; SPAIN; DIAGNOSIS; PARAMYXEA; DYNAMICS; SEQUENCE;
D O I
10.1016/j.jip.2012.03.015
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Bonamia exitiosa and Bonamia ostreae are parasites that reproduce within the haemocytes of several oyster species. In Europe, the host species is the flat oyster Ostrea edulis. The parasite B. ostreae has been responsible for mortalities since the late 1970s throughout the European Atlantic coast. B. exitiosa was first detected, in 2007, on this continent in flat oysters cultured in Galicia (NW Spain). Since then, the parasite has also been detected in France, Italy and the United Kingdom. The bays of the Ebro Delta in the south of Catalonia represent the main bivalve culture area in the Mediterranean coast of Spain. Previous information from the area includes reports of several flat oyster pathogens, including the notifiable parasite Marteilia refringens. However, the status with regard to Bonamia parasites was uncertain. In the present study, a Bonamia parasite was observed in flat oysters cultured in the Alfacs Bay of the Ebro Delta by histology and real-time PCR. PCR-RFLP and sequencing suggested the presence of B. exitiosa. Finally, phylogenetic analyses of the studied Bonamia isolates corroborated B. exitiosa infection. M. refringens was also observed in the same oyster batch, and co-infection with both parasites was also detected. This is the first detection of B. exitiosa, in Catalonia and the Spanish Mediterranean coast. The impact of the parasite on the Mediterranean flat oyster activity needs to be urgently addressed. (c) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码:307 / 313
页数:7
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