REEF Lionfish Expeditions Lead to New Information

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Pterois volitans AKA lionfish. Photo by Tom DeMayo
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August Blackbeard's Lionfish Project.
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Hesperis dissection by Everton Joseph (College of the Bahamas), Tim Schwab (Nassau Guardian) and Marcian Tucker (College of the Bahamas)
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Juvenile lionfish. Photo by Tom DeMayo

Working with leading scientists, REEF's lionfish field work is paying off in valuable information needed to address this key issue. Information from the five Bahamas projects conducted thus far this year is being used to help determine the range and extent of the lionfish invasion, as well as to address key questions on age/ growth, reproduction, genetics, parasites and habitat preference.

To date, more than 400 fish have been collected and shipped to the NOAA research lab in Beaufort NC and more than 500 sightings have been documented in the Bahamas. Data on length, plumage and stomach content have been gathered in the field, and samples for genetics and age/growth studies have been shipped to researchers.  REEF has worked in close partnership with the College of the Bahamas, researchers at UNCW, and Salisbury University, and local dive operators Bruce Purdy and Stuart Cove in gathering and analyzing the data.

Interesting data to date include:

  • Average size:188mm
  • Most species: Pterois volitans (though there are some Pterois miles present also)
  • Stomach content: about 70 % fish and 30 % crustacean with the most prevalent prey families including basslets, gobies and shrimp. Also found in stomachs: whole crab, whole sand diver, jawfish with eggs still in its mouth, and juvenile grouper (including Nassau)
  • Genetics: It appears that there were at least 11 females involved in the original founding population. This number is up from previous indications of four fish.
  • Reproduction: Fish are reproducing year-round with age at reproduction as young as 1-2 years.
  • Habitat preference: Lionfish have been found in almost all habitat types including artificial sites, canals, deep reefs, shallow reefs, small ledges and sand bottom.
  • Parasites: Compared to native fish, lionfish have almost no parasites, leaving more energy and time for growth and reproduction.
  • Growth: Lionfish appear to grow faster than similar sized native fish species like the graysby and the red hind.

REEF Remembers Chile Ridley

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Just before the holidays, REEF was saddened to learn of the passing of long-time volunteer and friend, Chile Ridley of Bonaire. Our thoughts are with his family and friends, especially his wife, Linda. The following article by Buddy Stockwell was published in the Caribbean Compass.

"On December 16, 2007 , the Cruising Community, the Island of Bonaire, and Mother Earth all lost one of their most wonderful, talented, and trusted friends. Edward Alton Ridley, known to all as " Chile" Ridley, took his own life at the age of 58. Chile was born in Valentine, Texas, and had battled the disease of depression all of his life. He is survived by his wife, Linda Ridley of Marfa, Texas . The Ridley's began their Cruising life aboard their Valiant 42 "Natural Selection" by departing Galveston in 1998 and sailing to St. Petersburg, Florida , where their new Valiant was part of the 1998 boat show. Thereafter, they cruised down the Eastern Caribbean , finally arriving in Bonaire five years later on Valentine's Day of 2003. As avid SCUBA divers, both Chile and Linda instantly fell in love with Bonaire and remained there as residents living aboard "Natural Selection." Chile was Manager of Bonaire's Capture Photo and also worked as a Dive Master. Most important, he was an indispensable volunteer for environmental organizations such as REEF, STINAPA and the Bonaire Seaturtle Conservation Project. Chile completed 300 Level 5 surveys for REEF, collected hundreds of amazing underwater images on film, and completed almost 2,000 dives. Chile's "True Grit" Texas spirit, fine character, and exceptional skills combined to make him an unflagging Champion of the environment like no other. Loved by all, Chile was not just a gentleman but a gentle man, always willing to lend a hand and always the first to volunteer. He will be missed by all who knew him, including all of the beautiful sea creatures of Bonaire that he loved so well and fought so hard to protect. The family asks that in lieu of cards or flowers, donations should be made in his name to support the Sea Turtle Conservation Project by visiting https://www.supportbonaire.org or to www.REEF.org for the fish survey projects."

New England Online Data Entry Teased Apart from TWA

REEF will separate our online dataentry interface for New England region from the tropical western Atlantic (TWA) where it currently resides, in the coming month.  Just in time for the Great Annual Fish Count, for more information, please contact gafc@reef.org or call 305-852-0030. We hope that this will facilitate an increase in the New England region survey efforts starting this summer.  In the next few weeks, login at http://www.reef.org/dataentry/login.php and you will be able to select New England for uploading New England fish surveys.  There are a few New England members who are willing to assist and guide those REEF members who are interested in participating in New England surveys.

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REEF in the Northwest

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Janna Nichols presented the REEF Invasive Tunicate Program at the Puget Sound Georgia Basin conference.
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Visit REEF's booth at the NW Dive Expo, April 25 & 26th.
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A recent REEF ID class in Redondo Beach, WA, part of a series of training workshops being held in the Pacific region.

REEF staff and volunteers are attending several events in the Northwest this winter and spring to spread the word about the Volunteer Survey Project. These include scientific conferences and dive shows. REEF volunteer and instructor, Janna Nichols, represented REEF at the Puget Sound Georgia Basin (PSGB) Ecosystem Conference last month in Seattle, Washington. Over 1,000 scientists, decision-makers and others attended the PSGB and the overall conference theme was to share knowledge and commit to action to protect the region's marine environment. Janna presented posters on two of REEF's important programs in the Pacific Northwest, tracking the presence and spread of invasive tunicates and the long-term monitoring of sub-tidal fish and invertebrates in the Olympic Coast National Marine Sanctuary.

If you weren't able to attend the PSGB Conference, REEF is participating in two upcoming events in Washington. The first is a workshop organized by the Centers for Ocean Sciences Education Excellence (COSEE) and others, "Exploring the Spectrum of Citizen Science". The workshop is being held April 10-11 at Fort Wordon State Park and will bring together many citizen science practitioners to discuss what make successful programs. Later that month, come visit the REEF booth at the Northwest Dive and Travel Expo in Tacoma, April 25 & 26th. REEF volunteers and Director of Science, Dr. Christy Pattengill-Semmens, will be at the booth to spread the word about REEF. We'll have survey materials and guide books on hand and will be presenting a seminar, "REEF: Diving That Counts" on Saturday afternoon at 2pm. See you there!

The REEF Pacific Region, which includes California through British Columbia, continues to be one of our most active areas. This is thanks to funding support from several West Coast foundations as well as partnerships with some great organizations. REEF survey and identification training opportunities abound, long-term monitoring projects in several National Marine Sanctuaries continue, the number of REEF Expert surveyors is increasing, and REEF data and projects are being presented at conferences and used by scientists and agencies. REEF greatly appreciates the continued support of several West Coast funders, including The Russell Family Foundation and the Sustainable Path Foundation, as well as our dedicated volunteers for making this continued success possible. If you are in the Pacific Northwest, check out the REEF PNW Critter Watchers webpage, which connects area REEF surveyors for training and surveying opportunities.

News Tidbits

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  • Check Out the REEF Store! It's your one stop shop for all of your REEF Gear, ID Books and REEF Survey Supplies. Just added - "Not On My Reef" Lionfish Invasion Research T-shirts.
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  • Remember REEF in Your Year-End Giving We need your help to continue REEF's important marine conservation work. Please donate during our Fall campaign using our secure online donation form, by mailing a check to REEF HQ, PO Box 246, Key Largo, FL 33037, or call the office at 305-852-0030. Every amount helps and donations are 100% tax-deductable. Donations of $250 or more will receive a limited edition signed print of a South Pacific coral reef by Paul Humann.  Our secure online donation form is https://www.reef.org/contribute
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  • Holiday Open House at REEF HQ  If you will be in the South Florida area next week, please join us at REEF Headquarters in Key Largo (MM 98.3) for our Holiday Open House on December 8 from 6 - 8 PM. Ned and Anna DeLoach will be on-hand to sign books and talk fish, and our Gift Shop has lots of unique holiday gifts. Call REEF HQ at 305-852-0030 or email reefhq@reef.org to find out more information
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  • Become a Fan of REEF on Facebook. The REEF Facebook Page gives you the latest information about REEF's programs and events, our marine conservation work, and see exclusive content and stories. It's also a great place for our members to post pictures, fish stories and whatever is on their mind.
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