Posts Tagged ‘terrapin’

Tiny Hatchling Beats Cold Front by a Nose

Wednesday, October 22nd, 2008

Three Gram Second-Chance Terrapin Hatchling

“There’s always one more.”  That’s the motto of the Paludal Posse, our terrapin research and conservation team on Outer Cape Cod.  There’s always one more nest to find, one more nest to hatch, one more turtle in the nest, one more hatchling to emerge, one more turtle to save.  In short, there’s always one more.  And so it was proven again this weekend as we prepared our last batch of terrapin hatchlings for release on Tuesday, a promised mild October day.

Terrapin Hatchling and Second-Chance Egg from Nest 996

Sue counted 20 second-chance hatchlings soaking in 70F water to prepare for their sprint to freedom.  Second-chance hatchlings?  What the heck are second-chance hatchlings?  As we harvest emerging nests that have mostly hatched and other nests that have been exposed by predators, we often find a couple of unhatched eggs left behind.  Most of these eggs are in good shape and need only a couple days more incubation.  A few, though, look pretty sad; dimpled, dented, dehydrated, discolored, and so on.  These eggs wouldn’t make it in the wild.  Still, we prefer to give every turtle egg a chance even if it has only a small probability of survival.  So, these long-shot eggs go into our mystical, magical second-chance bucket, filled wtih clean, moist natal sand and warmed first naturally in our sun room until early October and then under a heat lamp in our lab until successfully hatched or all hope is exhausted.  We always have Halloween hatchlings, usually have Thanksgiving babies and occasionally find a pair of cute dark eyes staring up at us on Christmas morning.  (ASIDE:  Can there be a more powerful holiday message?) 

So, as Sue collected the 20 lucky babies for their trip back into the wild, she scanned the second-chance bucket and yelled in exclamation, “We’ve got another one!”  To which I sagely replied, “Yep.  There’s always one more.”

Perfect October Day for Second-Chance Hatchling Release

We made it to Turtle Point on Lieutenant Island while the weather held; 63F, gentle breeze and warming sunshine.  But a careful look at the clouds streaming above reminded us that a storm front approached. 

2nd Chance Hatchling and 20 Siblings Released at Turtle Point

The sand at Turtle Point had baked through the morning and reflected warmth as we sat down to release our 21 charges.  Placing them in a single bunch near the wrack line on the downward sloping dune, we watched as they scattered in random directions and power bursts.  Soon they had all disappeared into the nursery surroundings, some into upland vegetation, others into downland wrack and Spartina salt marsh, and still others burrowed into the warm dune sand.

Last Sailboat Dances with Northeast Blow in Blackfish Creek

Within an hour the weather had closed in.  The cold front arrived with gusts whistling across the narrow Outer Cape peninsula from the North Atlantic.  Clouds massed and grayed; white caps appeared; and we were doused in cold droplets whether from rain or briny spray we couldn’t tell.

“There’s Always One More” Egg in Second-Chance Bucket

Back in our warm, comfortable lab office Tuesday evening we inventoried our terrapin assets.  Tanks empty and ready.  Second-chance bucket filled with potential.  And our hopes high for one more miracle.

Confronting Maggot Infestation in Wareham Turtle Garden

Saturday, September 13th, 2008

As we described earlier in the post, “Rescuing Live Hatchlings from Maggot Infested Nests,” fly maggots devastate threatened diamondback terrapin nests on the Outer Cape.  They devour tiny, vulnerable hatchlings as they break their eggshells in the secret darkness of their hidden underground nests.  When we encounter a nest infested with maggots, and after we suppress our disgust and repulsion, we aggressively excavate the egg chamber in order to save as many hatchlings as we can.

Terrapin Egg Completely Consumed by Fly Maggots

This Thursday we checked on a nest laid late last June in a new turtle garden off Broadmarsh River in Wareham, 60 miles from nests on the Outer Cape and on the other side of the Cape Cod Canal.  Still, once we penetrated the egg chamber the sand resembled an Indiana Jones movie scene with maggots playing the role of snakes.  “Maggots,” exclaims the Turtle Guy.  “Why does it have to be maggots?”

Maggots in Motion

We ignore the stench and dig quickly through the slithering sand to rescue eight live hatchlings among the devoured remains of eggs and embryos of seven might-have-been siblings. 

Eight Saved, Seven Depredated by Maggots

The rescued hatchlings appeared lethargic as though traumatized by the experience.  But after an overnight stay in clean, moist soil, and a leisurely bath in warm fresh water, they were eager for release into the wild.  That is, turtle eager which isn’t quite the same thing as mammal eager.

Hatchling Strolls through Wareham Turtle Garden

The background of the previous video clip shows the exquisite nesting habitat that was created by private homeowners abutting the nursery salt marsh of Wareham’s Broadmarsh River off Buzzards Bay.  At their own initiative and their own expense, the homeowners petitioned the Town of Wareham Conservation Commission for permission to create a perfect nesting habitat along a beach front that had become sand starved over the years and had lost all upland nesting potential.  These generous homeowners ordered 20 tons of perfectly matched beach sand to make a large nesting site at least 10 inches deep for terrapins to place their clutches.  Within a couple of weeks of completing this turtle garden, the first female terrapin had scratched and dug her nest.  In total, six nests were deposited in the new sandy turtle garden … all of which were protected by predator excluders.  As these new babies mature, they too will return to this turtle garden, ensuring a whole new generation of diamondback terrapins in Broadmarsh River; all thanks to an exceptional family who are dedicated to restoring the Wareham coastal ecosystem for future generations.

Peek Inside the Egg Chamber

Tuesday, September 2nd, 2008

Like a clenched fist deep inside a carefully carved terrapin nest lies the egg chamber where the female has deposited her clutch 75 days earlier. When the clock chimes “emergence,” hatchlings squirm and wiggle their way free of their siblings to begin their dash for survival.  Today at noon the alarm rang for Nest 280 on the high dune of Turtle Point on Lieutenant Island.  Count noses, count eyes, count limbs as hatchlings get ready to sprint for freedom.

Hatchling Bunched Tightly in Egg Chamber

Neither Angst Nor Doubt

Sunday, August 31st, 2008

Tiny 1-inch, quarter ounce diamondback terrapin hatchlings emerge from the sands of the Outer Cape and scramble against seemingly insurmountable odds and a host of hungry, impatient predators to find cover in the surrounding marsh. Restrained by neither angst nor doubt, they exhibit the epitome of an indomitable spirit to achieve success in the face of impossible obstacles.

No Obstacle Stops Determined Terrapin Hatchlings

Two-Headed Diamondback Terrapin Hatchling

Thursday, August 28th, 2008

In late August, a two-headed terrapin hatchling emerged from a nest in Eastham on the Outer Cape. Except for two heads, of course, the shell appears normal with an enlarged, split nuchal on the carapace and an extra, middle gular scute on the plastron. The left head seems to control the left two limbs and the right head appears to control the right two limbs.

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Two-Headed Terrapin Hatchling from Eastham, MA