Lionfish Thrive in the Mediterranean Amid Climate Change
A study led by researchers from Istanbul University along the coasts of Fethiye and Kas in southwestern Türkiye, published in the Journal of Fish Biology, offers an in-depth evaluation of the lionfish’s reproductive behavior and growth patterns.
The investigation analyzed 605 specimens, including 277 males, 302 females, and 26 individuals whose sex could not be determined.
Samples were collected using small-scale trammel nets, with extra specimens gathered by spear-fishing divers during summer months. The fish were sourced from depths ranging between 20-70 meters (65-230 feet), while laboratory assessments concentrated on seasonal fluctuations in the gonadosomatic index, hepatosomatic index, and condition factor.
Results indicated that female lionfish exhibit peak spawning activity from June to November, and that reproductively active individuals demonstrate "spawning potential from March through November."
The researchers highlighted that the species’ increased reproductive capability during warmer months plays a crucial role in its swift proliferation across the Mediterranean.
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