Monthly Archives: September 2016
Invert Trivia: What group of invertebrate species shares these three distinctive features? 1) A body with five-part symmetry; 2) an internal skeleton made of calcium carbonate; and 3) a water vascular system of fluid-filled vessels that manifests to the outer surface as structures called tube feet. Stumped? Here’s a few more clues. This group of species are entirely marine, and they lack a head, heart, brain and eyes. They have separate sexes but it’s generally impossible to tell them apart based on their outward appearance. And, they can regenerate body parts.
These awesome creatures can only be echinoderms. In Greek, echino means spiny, and derma refers to skin, and these spiny-skinned creatures comprise sea urchins, sea cucumbers, feather stars, sea stars, and brittle stars. Echinoderms have an ancient lineage that dates back at least 600 million years. Today, at least 6,500 species are recognized within six living classes which are highlighted below.
Spotted seatrout are a sought after fish species for both recreational and commercial fishermen in Florida. They are distributed along the Atlantic and Gulf Coasts from Cape Cod, Massachusetts to southern Florida and throughout the Gulf of Mexico to Carmen Island in the Lower Gulf of Campeche, Mexico. They are most common along the Gulf coast from the west coast of Florida to Texas.
Spotted seatrout are unique in that that their entire life is estuary dependent and they rarely migrate far from the estuaries where they were spawned. They can tolerate wide salinities and may be found in waters ranging from fresh to hyper saline.
In southwest Florida, spotted seatrout are generally found associated with vegetated areas, such as seagrass beds and mangroves, and in close proximity to deep areas for seeking refuge from extreme temperatures. In the northern Gulf where seagrass is sparse, spotted seatrout are found in and adjacent to marshes, over sand, mud, shell reefs, and around oil platforms.
Two recent deaths in Florida have raised concern about the saltwater-dwelling bacterium, Vibrio vulnificus. MOST HEALTHY INDIVIDUALS ARE NOT AT RISK FOR V. vulnificus INFECTION, however, to ensure that your time on the water is safe and enjoyable, be aware of your risk and take steps to minimize becoming infected.
What are Vibrio?
The name Vibrio refers to a large and diverse group of marine bacteria. Most members are harmless, however, some strains produce harmful toxins and are capable of causing a disease known as “vibriosis.”
When and where are Vibrio found?