Approach for Hemolymph Collection and Biochemical Profiling of Invasive Callinectes sapidus: Methodology and...

Area of Science:

• Marine Biology
• Invasive Species Research
• Crustacean Physiology

Background:

• The blue crab (Callinectes sapidus) is an invasive species in the Mediterranean Sea, causing ecological and economic harm.
• Understanding the physiology of invasive species is crucial for managing their spread and impact.

Purpose of the Study:

• To establish a standardized protocol for hemolymph collection and biochemical analysis in male blue crabs.
• To provide baseline physiological data for blue crabs in the northern Adriatic Sea.

Main Methods:

• A standardized protocol was developed and validated for hemolymph collection.
• Key biochemical variables were analyzed, including glucose, electrolytes, enzymes, and proteins.
• Preliminary validation confirmed analyte recovery, stability, and linearity, with no interference from hemolymph pigmentation.

Main Results:

• Biochemical profiles showed considerable individual variability, reflecting natural heterogeneity in a field-collected cohort.
• Overall results indicated consistent euryhalinity and a generally good physiological status in the sampled blue crabs.
• The developed protocol proved reliable for analyzing hemolymph despite pigmentation.

Conclusions:

• Standardized hemolymph analysis protocols are essential for accurate physiological assessment of blue crabs.
• This study provides valuable physiological data contributing to the understanding of blue crab invasive success.
• The findings support ongoing efforts to monitor and manage invasive blue crab populations.