Publications by authors named "J Tena-Medialdea"
Article Synopsis
- - The Mediterranean mollusc has experienced population declines due to a significant mortality event linked to a parasite, but some localized populations have shown resilience possibly because of their specific environmental conditions.
- - Researchers developed a molecular multiplex PCR method to accurately identify species and detect hybrids, using species-specific primers targeting the Internal Transcribed Spacer (ITS) regions of selected bivalves.
- - The study analyzed samples from various Mediterranean areas, confirming species differentiation through DNA amplification and sequencing, thereby demonstrating the importance of molecular tools in conserving biodiversity and managing hybridization.
Article Synopsis
- Female S. canicula (a type of shark) is abundant, resilient to fishing, and could be a good candidate for monitoring environmental pollution due to its behavior and distribution.
- A study analyzed levels of lead (Pb), cadmium (Cd), and copper (Cu) in their muscle tissue using microwave-assisted extraction and atomic absorption spectrometry, focusing on samples from Alicante, Spain, collected from November 2019 to November 2020.
- The study found higher concentrations of Pb and Cd during warmer months and identified specific times and locations where contaminant levels were significant, indicating the necessity for future research on these variations.
Article Synopsis
- * A study conducted on 27 P. nobilis individuals from both natural populations and captivity revealed differences in their immune competence, showing that hemolymph from captive animals had a significantly lower Total Hemocyte Count (THC) compared to those from the wild.
- * Flow cytometry and ultrastructure analysis indicated that captive pen shells exhibited impaired phagocytosis abilities against pathogens, likely caused by PnPV infection disrupting the hemocyte cyt
Article Synopsis
- There has been significant mass mortality of noble pen shell in various Mediterranean regions over the past seven years linked to a picornavirus that affects immune cells.
- A study analyzed specimens from Spain and Italy using electron microscopy and sequencing to identify the virus and understand its impact on the immune cells.
- Results showed the virus's presence in 100% of the samples, leading to lower total hemocyte counts and indicating severe immune dysfunction and viral replication in affected animals.
The fan mussel is currently on the brink of extinction due to a multifactorial disease mainly caused to the highly pathogenic parasite , meaning that the selection pressure outweighs the adaptive potential of the species. Hopefully, rare individuals have been observed somehow resistant to the parasite, stretching the need to identify the traits underlying this better fitness. Among the candidate to explore at first intention are fast-evolving immune genes, of which toll-like receptor (TLR).
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