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Article Abstract
In the course of a histopathological survey performed to discover the cause of mass mortality of the striped clam Chamelea gallina in the Balearic Islands (Spain, Mediterranean Sea), we detected a Marteilia-like parasite in 3 clams. Molecular methods were applied to identify the parasite. DNA extracted from a paraffin block was used to carry out a PCR assay for Marteilia refringens detection based on a rDNA sequence of the parasite (the intergenic spacer of ribosomal genes, IGS). The nucleotide sequence of the IGS amplified fragment and the positive signal obtained by in situ hybridisation analysis with a M. refringens-specific probe allowed us to confirm the presence of this parasite in the digestive gland tissue of C. gallina.
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Article Synopsis
- The European flat oyster's population has drastically declined due to two parasites, leading to stock collapse and loss of natural beds.
- Research has focused on understanding immune responses to these parasites and developing genetic programs to enhance parasite resistance.
- A newly completed chromosome-level genome assembly provides insights into the oyster's genetic makeup and is crucial for ongoing studies in breeding, aquaculture, and restoration of natural habitats.