The effects of red tide (Karenia brevis) on reflex impairment and mortality of sublegal Florida stone crabs, Menippe mercenaria
| Autor: | Vincent J. Lovko, Philip M. Gravinese, Michael S. Henry, Talib Clemente, Cody Cole, Stephanie M. Kronstadt, Richard H. Pierce, Patricia Blum |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Brachyura Harmful Algal Bloom Red tide Stone crabs Zoology Aquatic Science Oceanography 010603 evolutionary biology 01 natural sciences Algal bloom Reflex Animals West coast Menippe mercenaria Mercenaria biology 010604 marine biology & hydrobiology General Medicine biology.organism_classification Pollution Dinoflagellida Florida Marine Toxins Karenia brevis Environmental Monitoring |
| Zdroj: | Marine Environmental Research. 137:145-148 |
| ISSN: | 0141-1136 |
| Popis: | The Florida stone crab, Menippe mercenaria, is a major commercial fishery that occurs primarily along Florida's west coast, where harmful algal blooms of Karenia brevis frequently develop. To determine sublethal and lethal effects of K. brevis on M. mercenaria, we exposed sublegal stone crabs to three seawater treatments in laboratory conditions: no K. brevis (control), a low-toxin K. brevis strain (Wilson LT), and a toxic K. brevis (New Pass strain). Total food consumed, reflex impairment and survivorship of each crab was monitored throughout the nine-day experiment. Crabs in the toxic treatment consumed 67% less food. The probability of an individual losing a reflex significantly increased with time (days), and there was a 42% decrease in survivorship in the toxic treatment. This is the first study to demonstrate negative effects of K. brevis on the stone crab, presenting the critical need of further investigation to fully understand how red tide may impact sustainability of the fishery. |
| Databáze: | OpenAIRE |
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