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The thick algae on Lake Okeechobee has caused a State of Emergency, keeping the water behind the flood gates and stopping the spread down the rivers and eventually the coast.
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Florida's southwest coast experienced a flare-up of the toxic red tide algae this week, setting off concerns that it could continue to stick around for a while. Dead fish have washed up on beaches.
A prolonged absence of light or exposure to harmful chemicals may cause atrophy and absorption of the chloroplasts without otherwise harming the organism. A number of species exists where a chloroplast's absence was formerly marked with separate genera such as Astasia (colourless Euglena ) and Hyalophacus (colourless Phacus ).
Euglena reproduce asexually through binary fission, a form of cell division. Reproduction begins with the mitosis of the cell nucleus , followed by the division of the cell itself. Euglena divide longitudinally, beginning at the front end of the cell, with the duplication of flagellar processes, gullet and stigma.
This genetically distinct individual can then proliferate through binary fission. Some argue that this is not true reproduction but actually a form of growth. [ 4 ] Fission is often prompted in the autumn by a decrease in the abundance of food and follows sexual spawning in summer.
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Multiple fission at the cellular level occurs in many protists, e.g. sporozoans and algae. The nucleus of the parent cell divides several times by mitosis, producing several nuclei. The cytoplasm then separates, creating multiple daughter cells. [5] [6] [7] In apicomplexans, multiple fission, or schizogony appears either as merogony, sporogony ...