Raggies from Bayworld released

Discussion in 'Diving, Collecting and Environmental Discussions' started by Steve Warren, 27 Jul 2011.

  1. Steve Warren

    Steve Warren

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  3. Nemos Janitor

    Nemos Janitor

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    WOW Steve. Great job :thumbup: you must be missing your babies and wondering as to their well being. Please keep us updated on their movements.
     
  4. KeeganP

    KeeganP

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    Wow cool stuff, why were they released?
     
  5. Jeann1

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    Love to see people helping to release back, and conserve our Oceans , Well Done!!!
     
  6. Steve Warren

    Steve Warren Thread Starter

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    We decommisioned the large Predator Tank along with most of the other live marine life diasplays at Bayworld.
     
  7. KeeganP

    KeeganP

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    Howcome? will it be converted for keeping other marine fish?
     
  8. Xereo

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    If u actually read the artical you would know :)
    They doing a Re-vamp
     
  9. KeeganP

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    :whistling: sorry my bad, only watched the video, :blush: Thanks
     
  10. Steve Warren

    Steve Warren Thread Starter

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    We are downscaling to 6 smaller tanks and a mangrove display. If we get a very large cash injection then we will be building a large modern aquarium again and bring dolphins and seals back.
     
  11. KeeganP

    KeeganP

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    :thumbup: Sounds awesome Steve, all the best of luck. Keep us updated.
     
  12. Steve Warren

    Steve Warren Thread Starter

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  13. Steve Warren

    Steve Warren Thread Starter

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  14. Nemos Janitor

    Nemos Janitor

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    Steve i am sure you are more anxious than us as to their whereabouts. Any indications from the tracking devices yet?
     
  15. Steve Warren

    Steve Warren Thread Starter

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    The information from the listening stations can only be gathered when they are replaced, the information is then downloaded ton a computer. I am not sure when we will be diving to replace the devices, they have batteries that enable them to collect data for several months.
     
  16. Nemos Janitor

    Nemos Janitor

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    OK, so data will only become available in a few weeks/months so the tracking devices are not satellite real time trackers. Sure there was a reason for not going real time trackers. We see on Nat Geo tracking devices for the GW but these devices only transmit on surfacing. Care to share thoughts on the various options.

    As far as Raggies are concerned, don't they start to migrate soon? Was the release timed accordingly?
     
  17. Steve Warren

    Steve Warren Thread Starter

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    There are raggies all year round, they do migrate for breeding and pupping, but will just slot into that when the time is right.
    Cost is the main reason for not satellite tagging, cost of the tag and daily cost of uploading data. The technical reasons will also be a factor. I must admit I am not that knowledgable on the various satellite tags or know if there are satellite tags that deliver data with constant submersion or not! I know with the sea turtles that we rehabilitate and tag, satellite tagging would be desirable, but too costly when we don't have a budget for rehabilitation of sea turtles. They get monel flipper tags which will only be seen most likely 12 to 15 years later on females coming up to nest.
     
    Last edited: 30 Jul 2011
  18. Nemos Janitor

    Nemos Janitor

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    Thanks for the info Steve. Very interesting stuff. We would be very interested to hear on the raggies movements when the data is downloaded. Please keep us updated.
     
  19. Nemos Janitor

    Nemos Janitor

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    @Steve Warren any info coming up to the anniversary as to the release of these raggies?
     
    Last edited by a moderator: 26 Nov 2015
  20. Steve Warren

    Steve Warren Thread Starter

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    Hi, I'm not at Bayworld anymore, but will ask and let you know if I hear anything.
     
  21. Steve Warren

    Steve Warren Thread Starter

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    Within 24 hours of being released the female was 24 kms away at St Croix, within another 3 days had travelled another 15 kms to off the Sundays River mouth and then to the Woody Cape area, her pattern followed those of wild raggy females, leaving Algoa Bay to travel northwards to KZN and returning back to Algoa Bay about 11 months after her release near St Croix Island. The male has not been recorded, but the males are likely to travel in deeper water where it would not be recorded. There is an article in Africa Geographic October? 2012.
     
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