Archive for the ‘Turtles’ Category

Two Tragic Turtle Accidents on Lieutenant Island

Sunday, July 5th, 2009

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Location Where Two Threatened Turtles Were Run Over

For a conservation researcher, the death of a single mature female in a threatened population is painful.  The needless crushing of two nesting females within 50 feet and 50 minutes of each other by Lieutenant Island drivers on Friday morning ranks beyond tragic.  It is devastating to the affected species and it doesn’t say anything postive about the effecting species, either.

[Editor’s note:  Yes, we do have photographs of these animals to document the scene and their condition, but we are not posting them to our web site because they would offend … and anger … readers.  They are available for state and local authorities at their request.  The images of the scene that you will see below avoid showing the animals themselves.]

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Scene of First Turtle Incident

The first turtle was run over by a driver that continued on his way, then was moved to the side of the road by a bystander who assumed she was dead.  Her carapace was split open with blood oozing every where; yet she clung tenaciously to life.

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Scene of Second Turtle Incident

While the Turtle Journal team sped her to Wildcare in Eastham for emergency treatment, a second female turtle was crushed to death at nearly the same spot.  According to witnesses, a commercial fuel truck making a delivery to a cottage on the second island ran over her on its way out.  She was crushed so badly that the center line of her carapace split open and eggs squirted across the road.  Fully encased first clutch eggs that she was about to lay, as well as unfertilized eggs for her second clutch which she would have laid in another 17 days, were scattered across the roadway.  An island visitor sobbed as we removed the carcass and harvested the eggs.  Even the thought that we would try to save her DNA by incubating and protecting six potentially viable eggs we salvaged did little to abate the tears.

How Much Damage?

Due to high egg depredation and huge mortality of the few hatchlings that emerge, it can take a mature female two to four decades of continuous nesting just to reproduce a replacement for herself.  Turtle reproductive strategies grind exceedingly slow, which makes it so difficult to restore populations declining under the pressure of human influence.  The loss of breeding females, that are not plagued by a biological clock to limit productivity as they advance in years, and that actually produce more viable hatchlings as they age and grow; the loss of these female terrapins to the population is simply tragic and unsustainable.  Two other female nesters were killed on Indian Neck roads on the other side of Blackfish Creekd, another road fatality was found today near the dike on Chequessett Neck Road, and at least one other was squashed while on a nesting run in Eastham.  This year has proven a bad season for nesting terrapins.  Reports have been filed for eight or nine diamondback terrapins run over on the Outer Cape, mostly in Wellfleet, so far this nesting season … with the second clutch nesting runs yet to commence!

Mitigating Damage

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Don Lewis of Turtle Journal and Lela Lamed of WildCare

The first turtle is being treated at Wildcare where they will attempt to save her, and at the very least, to harvest her eggs for incubation.  When we examined her at the scene, she still had function and response in each limb.  The crack to the carapace did not extend across the vertebral.  So, we are hopeful, but realistic.  Such damage takes months and months to repair … if ever.

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Six Potentially Viable Eggs from Lieutenant Island Road Kill

Sue Wieber Nourse of the Turtle Journal team harvested six potentially viable eggs from the dead terrapin.  She carefully encased them in a sealed, cushioned and moist container for transport to a safe incubation site on the other side of the island.  Don dug a turtle nest at the appropriate sand depth and optimal location for incubation at  Turtle Point, then capped this mini-nest with a predator excluder.  Sue and Don will watch it carefully through the summer with the expectation that we will find hatchlings emerging from these eggs around Labor Day Weekend.  Watch TurtleJournal.com for “the rest of the story.”

Good News?

Yes, when you’re in the field with Turtle Journal, there’s always good news to balance the bad.  At the scene of these two terrible accidents, Sue collected several other female terrapins on nesting runs amidst the July 4th weekend traffic.  We moved them to a much safer location before more damage could be done.

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Young Female Terrapin on Her First Nesting Run

One of these ladies was a young turtle that came out of Wellfleet Bay for the very first time to deposit her eggs.  While our 30 year longitudinal study has allowed us to identify first time nesters, this one was the first such first time nester that we found en route to her nest.  We took precise weights and measurements to tease as much scientific data as possible about this rare event.  Then, when we moved her to a safer location out of the press of vehicular traffic, she immediately began to dig her nest and lay her eggs right in front of us.  We videographed and photo-documented the entire event, and we were able to acquire even more data on her eggs and on her body weight after she laid them.   Because we don’t want to draw tonight’s post out too long, we will save the rest of this upbeat story for the next posting.  Stay tuned!

Happy Fourth of July 2009

Friday, July 3rd, 2009

Fireworks in the Fog — Marion, Massachusetts

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Cape Cod Times and CapeCast: Red-Tummy Turtle Rehab @ National Marine Life Center

Tuesday, June 16th, 2009

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CapeCast: Red-tummy turtle rehab

Today on CapeCast: The National Marine Life Center in Buzzards Bay has become a nursey for a half-dozen endangered Northern red-bellied cooters. Watch them wiggle and wow.
 
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Photo by Paul Blackmore of the Cape Cod Times

Endangered turtles get a head start

By
 

BUZZARDS BAY — Out in the wild, tiny northern red-bellied cooters would most certainly be lunch for skunks and raccoons.

But six turtles with fire-colored tummies were more eaters than entrees yesterday as they devoured shreds of lettuce like termites tearing through wood.

The undersized bunch arrived at the National Marine Life Center in Buzzards Bay two weeks ago with the goal of getting fatter — or at least big enough to be safely released back into their natural freshwater habitat.

In Massachusetts, northern red-bellied cooters are native only to Plymouth County — at least 250 miles north of where most of the species resides in mid-Atlantic states.

The species is endangered in Massachusetts and classified as threatened on a federal level, said Don Lewis, the center’s chief operating officer.

Nearly 100 percent of northern red-bellied cooters that hatch in the wild are eaten by predators such as skunks, raccoons, herons and bullfrogs, according to the U.S. Fish and Wildlife Service Web site. Those dire survival numbers prompted federal and Bay State wildlife officials to set up a “head-starting” program for the turtles.

“They are pretty rare everywhere we look,” Lewis said. “That’s why we protect them, that’s why we give them a head start and that’s why we’re trying to reverse the decline in populations.”

Research biologists find red-bellied cooter nests and protect them with screens. When hatchlings start to emerge from a nest, biologists remove half of them and take them to marine rehabilitation centers where they are fed and kept warm for about eight months. They are then released to pond and river habitats. Red-bellied cooters that get a head start have a high rate of survival, according to the wildlife service.

Lewis said the center’s cooters, which were born in October, are healthy and will be released when they are “hockey-puck size,” likely within a month.

Puppy Love Comes to a Cape Cod Marsh

Sunday, May 31st, 2009

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Boy (Dog) Meets Girl (Turtle)

This tragic story has been told a million times in books, plays and movies.  From Homer’s tale of Helen and Paris set in Troy nearly 3000 years ago, to Shakespeare’s impetuous Italian teens “Romeo and Juliet” penned in 1597, and Bernstein’s musical update relocated to New York City with Tony and Maria in the 1957 “West Side Story,” these cross-cultural romances rarely find a happy conclusion.  And so it was in the salt marsh of Chipman’s Cove one bright spring day when boy from the upland Canine Clan met girl from the brackish Reptile Family.  From the first you knew nothing good would come of it.

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First Fateful Meeting of Boy and Girl

As the Turtle Journal team censused diamondback terrapins in their mating aggregation on the Outer Cape, along came an energetic canine boy to experience his first encounter with turtles.  You could see his fascination from the first, as he strained on his leash to investigate these wonderful creatures with that exotic “Eau du Marsh Parfum.”  He couldn’t restrain himself as he danced about to the rhythmic cadence of Jets and Sharks.

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Love Blossoms

It was love at first sight.  He couldn’t take his eyes (or nose) off her as she strained in the bucket to flee his native uplands and escape to her more familiar lowland estuary home.  The tragic ending came quickly as boy tried to express his devotion with a sniff and a kiss, and girl rejected his advance with a nip on the nose.  Sadly, it was doomed from the start and could never have worked.  They came from two different worlds that only met on a spring high tide.

On a happier postscript, boy returned to the marsh a week later, perhaps to refresh memories of his puppy love.  Older and wiser, he inspected the new set of bucket girls from afar.  I could have sworn that he rubbed his paw across his nose as he waved goodbye to the new ladies of the bay.

Piping Plovers, Pilot Whales and Fiddlers on the Flats

Tuesday, May 26th, 2009

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Piping Plover on Outer Cape Cod

A beautiful spring day offered the Turtle Journal team an opportunity for exploration on the Outer Cape on Memorial Day 2009.  In the mating aggregation in Chipman’s Cove, we captured eleven terrapins with waders and hand nets to supplement our spring census.  Four were recaptures from previous years; seven were first timers; several were new recruits just entering sub-adult status.

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Plover Incubating Eggs in Predator Exclosure

With time to spend while waiting for the holiday traffic jam to unsnarl along the Mid Cape Highway, we explored other natural, coastal venues and found some wonderful discoveries.  We ran into a nesting plover on a special barrier beach that is protected by volunteers from Mass Audubon’s Wellfleet Bay Wildlife Sanctuary.  This exquisite, tiny creature that we shot through a telephoto lens rested on four eggs inside a roped off area with an inner predator excluder cage. 

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Four Camouflaged Piping Plover Eggs

Neither the four camouflaged eggs nor the piping plover itself were easy to distinguish from the beach and gravel backdrop. 

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Piping Plover

While the area seems well protected from humans and mammalian predators, the greatest concern in this location is the tremendous tidal forces that affect barrier beaches in Wellfleet Bay.  With a 15 foot range from highest high to lowest low tides, an inopportune southwesterly blow that augments an astronomic tide could produce catastrophic results for these tiny, federally protected birds. 

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Former Salt Marsh Reclaimed by Cape Cod Bay

On the west shore of Lieutenant Island where the Turtle Journal team found five pilot whale bone skeletons this last winter (see Discovery of Historic Pilot Whale Bones Hints at Cape Cod’s Past and Cape Cod Times “CapeCast: Pilot Whale Graveyard”), we explored a peaty area of former salt marsh that had been reclaimed by Cape Cod Bay over the centuries.  This spot is seaward by 50 to 100 feet from the line where the pilot whale skeletons became exposed by storms and tides this winter.  We had been watching a spot to the top left of this peat field in the photo above because we had discovered some rough hewn wood in March that we thought may indicate historic human activity.

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Pilot Whale Bone Exposed by Tidal Erosion

A piece of pilot whale bone had become exposed in the proximate area of the rough hewn wood that has disappeared.  No other pieces of the skeleton have become exposed and we did not probe beneath the peat during this outing.

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Explosed Pilot Whale Bone

In much worse condition that the bones we had discovered in the winter, the bone fragmented easily to the touch.

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Thousands upon Thousands of Male Fiddler Crabs

No springtime trip to Lieutenant Island and the Outer Cape could be satisfying without a spending a few moments with the fiddlers of the flats.  Male fiddler crabs sport enormous claws, some left-handed, some right-handed, that they use to attract females.  Inspecting this one small, barren salt marsh area off Turtle Point, you can count thousands upon thousands upon thousands of male crabs dotted across the landscape like snowflakes, guarding the opening to their underground burrows and waving their huge fiddles into the air to grab the attention of any female crab bold enough to stroll throught he gauntlet. 

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Males Waving Their Fiddles for Female Attention

A glorious weekend of discovery at the cusp of another great research season on the Outer Cape.