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Thread: Some animals that Photosynthesize . ..

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    BigBella's Avatar
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    Some animals that Photosynthesize . ..

    Here are a few of my miscellaneous underwater photographs (mostly shot at about 20 meters or so), depicting some animals -- those various anemones seen below -- which actually "photosynthesize a bit," due to algae which live symbiotically in their tissues. So, here we have animals who masquerade -- to a slight degree -- as plants. Sound familiar? The largest anemones, Tealia, can actually capture and eat fish, and are about the diameter of a dinner plate.

    There is absolutely no excuse for the octopus shot. But who here doesn't really like an octopus, huh?

    Tealia with Sponges


    Tealia


    Corynactis


    Seacape "C" (Carmel, CA)


    Two-Spotted Octopus (Santa Cruz Island, CA)
    “Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."

    -- Galileo "Biff" Galilei

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    Whats it to ya? Finch's Avatar
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    Ah, all are very beautiful.

    Though I would argue that it is the algae that is the only one photosynthesizing.
    that makes no logic

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    BigBella's Avatar
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    Quote Originally Posted by Finch View Post
    Ah, all are very beautiful.

    Though I would argue that it is the algae that is the only one photosynthesizing.
    Well, you could further argue that your mitochondria (inextricably intertwined within us and once thought to have been symbionts themselves) -- and not you -- are producing your chemical energy, if you wish to go that far . . .

    The anemones do obtain a fair percentage of their caloric intake from the algae's photosynthesis; and while the animals don't photosynthesize directly -- studies have shown that, when their symbiotic algae was "starved" for light, it also adversely affected the anemones as well. They actually lost weight more rapidly than they would have otherwise . . .
    “Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."

    -- Galileo "Biff" Galilei

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    Aklys joossa's Avatar
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    Ahh... the joys of Endosymbiotic Theory....


    Great pictures!!
    -Joel from Southern California


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    Whats it to ya? Finch's Avatar
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    Quote Originally Posted by BigBella View Post
    Well, you could further argue that your mitochondria (inextricably intertwined within us and once thought to have been symbionts themselves) -- and not you -- are producing your chemical energy, if you wish to go that far . . .

    The anemones do obtain a fair percentage of their caloric intake from the algae's photosynthesis; and while the animals don't photosynthesize directly -- studies have shown that, when their symbiotic algae was "starved" for light, it also adversely affected the anemones as well. They actually lost weight more rapidly than they would have otherwise . . .
    But it is not the same, as mitochondria is no longer a distinct and independent organism. Many of its genes have migrated to our own nucleus, so they are is in a way the algae for these animals are not,
    that makes no logic

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    BigBella's Avatar
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    Quote Originally Posted by joossa View Post
    Ahh... the joys of Endosymbiotic Theory....


    Great pictures!!
    Thanks. I am a biologist myself, but get a few groups of scientists together, and you may as well be arguing theology when it comes to theory and precedence . . .

    How many mitochondria fit on the head of a pin?
    “Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."

    -- Galileo "Biff" Galilei

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    BigBella's Avatar
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    Quote Originally Posted by Finch View Post
    But it is not the same, as mitochondria is no longer a distinct and independent organism. Many of its genes have migrated to our own nucleus, so they are is in a way the algae for these animals are not,
    It is not the same but it is analogous. The anemones will not survive without the presence of the algae for long (many line their gastrodermal -- digestive -- tract); and how the algae is acquired is still a bone of contention, and it is possibly going down the same route as ancient mitochondria once did (if you subscribe to that). Perhaps plants don't photosynthesize either; their chloroplasts do. No, wait weren't they once simply cyanobacteria . . .

    It's all a matter of when you take that picture in evolutionary time, at which point the mitochondria is no longer a visitor but a squatter. When does that acquisition become a permanent feature or an organelle?


    I recall answering someone's question about photosynthesis last year and I gave an abbreviated answer (so as not to usher up the international masturbatory gesture), and was called on it. My only desire, than as now, was not to be mind-numbingly boring and argue the number of angels on heads of pins . . .
    “Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."

    -- Galileo "Biff" Galilei

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    sea bear returns! theyellowdart's Avatar
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    Very nice shots. Where were these taken? Somewhere in the Caribbean, or in the Pacific?
    Do these anemones contain the same zooxanthellae found in most corals?
    growlist

    Has anyone really been far even as decided to use even go want to do look more like?

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