scholarly journals Population dynamics of threatened elkhorn coral in the northern Florida Keys, USA

2012 ◽  
Vol 19 (2) ◽  
pp. 157-169 ◽  
Author(s):  
T Vardi ◽  
DE Williams ◽  
SA Sandin
Keyword(s):  
Population Dynamics ◽  
Florida Keys

scholarly journals Commercial sponge fishery impacts on the population dynamics of sponges in the Florida Keys, FL (USA)

2017 ◽  
Vol 190 ◽  
pp. 113-121 ◽  
Author(s):  
Mark J. Butler ◽  
Donald C. Behringer ◽  
Marla M. Valentine
Keyword(s):  
Population Dynamics ◽  
Florida Keys

Extracellular filaments in the perineurium of the florida lobster, Panulirus argus

1987 ◽  
Vol 45 ◽  
pp. 784-785
Author(s):  
Roy J. Baerwald ◽  
Lura C. Williamson
Keyword(s):  
Blood Brain Barrier ◽  
Glial Cells ◽  
Tannic Acid ◽  
Nerve Cord ◽  
Ventral Nerve Cord ◽  
Florida Keys ◽  
Panulirus Argus ◽  
Brain Barrier ◽  
Cacodylate Buffer ◽  
Nerve Cords

In arthropods the perineurium surrounds the neuropile, consists of modified glial cells, and is the morphological basis for the blood-brain barrier. The perineurium is surrounded by an acellular neural lamella, sometimes containing scattered collagen-like fibrils. This perineurial-neural lamellar complex is thought to occur ubiquitously throughout the arthropods. This report describes a SEM and TEM study of the sheath surrounding the ventral nerve cord of Panulirus argus.Juvenile P. argus were collected from the Florida Keys and maintained in marine aquaria. Nerve cords were fixed for TEM in Karnovsky's fixative and saturated tannic acid in 0.1 M Na-cacodylate buffer, pH = 7.4; post-fixed in 1.0% OsO4 in the same buffer; dehydrated through a graded series of ethanols; embedded in Epon-Araldite; and examined in a Philips 200 TEM. Nerve cords were fixed for SEM in a similar manner except that tannic acid was not used.

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