Re: more on the cowries

Re: more on the cowries

Author: 
Creswell,Roger Leroy
?That's really pretty disturbing. Since cowries and fighting conch are gastropods, they do not filter phytoplankton in the water as do bivalves..so unlikely from a toxic microalgae...and cowries are carnivores and fighting conch are herbivore/detritivores, so it's very unlikely they were "poisoned" from consumption of similar food items.

To me, the most likely scenario would be hypoxia - low dissolved oxygen- that could be caused by a high "biological oxygen demand" as bacteria decompose any dead phytoplankton in the water (perhaps that's the yellow color you're seeing in the water)...as the bacteria multiply their respiration can rapidly consume what dissolved [...]

Add new comment

Very Limited WYSIWYG

  • Allowed HTML tags: <em> <strong><h1><p><br>
  • Lines and paragraphs break automatically.

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.