The effects of red tide (Karenia brevis) on reflex impairment and mortality of sublegal Florida stone crabs, Menippe mercenaria.
Mar Environ Res
; 137: 145-148, 2018 Jun.
Article
en En
| MEDLINE
| ID: mdl-29571587
ABSTRACT
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.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Dinoflagelados
/
Monitoreo del Ambiente
/
Braquiuros
/
Floraciones de Algas Nocivas
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Toxinas Marinas
Límite:
Animals
País/Región como asunto:
America do norte
Idioma:
En
Revista:
Mar Environ Res
Asunto de la revista:
BIOLOGIA
/
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2018
Tipo del documento:
Article