Brevetoxin exposure in sea turtles in south Texas (USA) during Karenia brevis red tide
| Autor: | Brian A. Stacy, Zhihong Wang, Jennifer Shelby Walker, Leanne J. Flewelling, Donna J. Shaver, Margaret H Broadwater |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Harmful Algal Bloom Red tide Zoology 010501 environmental sciences Aquatic Science 01 natural sciences Algal bloom Brevetoxin Animals Head and neck Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Intestinal contents Green sea turtle biology 010604 marine biology & hydrobiology Oxocins Mycotoxicosis biology.organism_classification Texas Turtles Fishery Sea turtle Dinoflagellida Marine Toxins Karenia brevis |
| Zdroj: | Diseases of Aquatic Organisms. 127:145-150 |
| ISSN: | 1616-1580 0177-5103 |
| Popis: | Five green (Chelonia mydas) and 11 Kemp's ridley (Lepidochelys kempii) sea turtles found dead, or that died soon after stranding, on the southern Texas (USA) coast during 2 Karenia brevis blooms (October 2015, September-October 2016) were tested for exposure to brevetoxins (PbTx). Tissues (liver, kidney) and digesta (stomach and intestinal contents) were analyzed by ELISA. Three green turtles found alive during the 2015 event and 2 Kemp's ridley turtles found alive during the 2016 event exhibited signs of PbTx exposure, including lethargy and/or convulsions of the head and neck. PbTx were detected in 1 or more tissues or digesta in all 16 stranded turtles. Detected PbTx concentrations ranged from 2 to >2000 ng g-1. Necropsy examination and results of PbTx analysis indicated that 10 of the Kemp's ridleys and 2 of the green turtles died from brevetoxicosis via ingestion. This is the first documentation of sea turtle mortality in Texas attributed to brevetoxicosis. |
| Databáze: | OpenAIRE |
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