Snapper Hunt

May 4th, 2014

What Lies Beneath Every Pond and Lake?

Count your fingers, count your toes; if you’re diving, check your nose!  Peer deeply through the murky darkness into the mucky bottom of every pond, lake and favorite watering hole, and you’ll find a large, humorless, 35-to-60 pound snapping turtle … waiting.

Aggressive Male 35-Pound Snapping Turtle (Chelydra serpentina)

Every encounter with a snapping turtle is memorable; the bigger the turtle, the more memorable the event.  We were fortunate to find this pleasant critter cruising the bottom of a flooded SouthCoast bog on Saturday morning.  Water magnifies objects and creatures.  So, Don Lewis discounted the enormity of the image Sue Wieber Nourse spotted as he readied the net to bring the creature ashore for closer examination.

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Snapper!

The video speaks eloquently for itself.  And it poignantly reminds us to be careful for what we wish; after all, we may get it.

Rufus the Turtle Dog Exclaims:  “That’s no turtle.”

When Don lugged this large snapper on shore, Rufus the Turtle Dog examined it closely with furrowed brows.  She looked up at Don with thought bubbles projecting, “That’s no turtle.”

Rufus the Turtle Dog:  “That’s a dinosaur … and it’s all yours!”

She stood up, walked away from the creature and formed more thought bubbles that said, “That’s a dinosaur, and it’s all yours!”

Sizing and Perspective for Male Snapping Turtle

The Turtle Journal team has a full complement of scientific devices for documenting field discoveries.  In the case of a very large, angry, and aggressive snapping turtle, we eschew those delicate instruments in favor of more durable, if less precise measuring methods.  For weight, we use the reliable “back stress test.”  We lift the turtle with the 10-foot net, allowing the full strain to focus on the small of the back.  Yep, 35 pounds.  For shell length, we prefer not to hold a measuring tape above the critter’s gaping jaws.  Instead, our sneaker gently laid across its carapace provides the best reading:  really big.

Male Snapping Turtle Ventral Side and Plastron

The 10-foot net pole also allows us to examine, from a healthy distance, the turtle’s plastron and tail, offering a good indicator of its gender.  As we have noted in earlier posts, the smallish plastron of the snapper does not provide adequate protection for all its vulnerable parts; a factor that Turtle Journal believes contributes significantly to its aggressive behavior.

Male Snapper Tail (with Leech on Left Rear Leg)

Nothing says ancient, dinosaur-like creature more eloquently than a snapper’s tail.  You may note that this specimen sports a leech on its left rear leg (see image above).  It’s difficult to describe how challenging it was for us to remove the leech from the snapper’s limb without the snapper removing portions of our limbs.  Still, a reptile’s “gratelessness” is one of the attributes for which we admire them.  No one accused a snapping turtle of bonding with its human rescuer, unless munching is a form of bonding.

Male Snapping Turtle Heading Back Home

After suffering the ignominy of this encounter with humans, the snapper said his fond (sic) adieu and headed back to the depth of his bog.  If you’re looking for an example of determination, you may wish to review the video one more time.

What Lies Beneath … Once Again?

As the snapper plunged into the water and disappeared into the murk, we got one last glimpse of him submerging, “through a glass darkly.”  Bringing us full circle, the question lingered in the air, “What DOES lie beneath these murky waters?”

First Eastern Box Turtle of 2014 Season

May 2nd, 2014

Male Eastern Box Turtle (Terrapene carolina carolina)

The Turtle Journal team found our first Eastern box turtle (Terrapene carolina carolina) of the 2014 season at noon on Thursday, May 1st, in an upland woods on Outer Cape Cod.  As pictured above peering through the partially closed hinged plastron, the turtle’s bright red eyes confirm his masculine gender.

Eastern Box Turtle #1110 in Wellfleet Woodlands

We had committed to search a wooded upland property off Old Kings Highway in Wellfleet for Eastern box turtles.  As we well know, this spring has been especially chilly and box turtles have remained inactive, lingering in hibernacula, and delaying the timing for this sweep.  Because  the forecast promised temperatures in the upper 50s accompanied by torrential rain, the Turtle Journal team selected Thursday as the first viable opportunity to find box turtles on the site.  And so we did.

Don Lewis Discovers Eastern Box Turtle #1110

As we swept these woodlands, we looked for box turtle “forms,” which are shallow depressions covered by grass, leaves and debris.  We sometimes call these forms “garages” because box turtles “park” themselves inside.  Eastern Box Turtle #1110 had left its most recent form and was lazing in the warm rain, rehydrating after a long, hard winter brumation.  His domed bright yellow shell seemed quite gaudy in contrast to the surrounding pine needles, oak leaves and winter grass.

Sue Wieber Nourse Examines Male Eastern Box Turtle #1110

The turtle proved shy and “boxed” himself up tightly with his hinged plastron.  Still, we could easily identify his gender based on the concavity in his abdominal scutes and confirmed later by his bright red eyes.

Male Eastern Box Turtle #1110 Carapace (Top Shell)

Male Eastern Box Turtle #1110 Plastron (Bottom Shell)

Male Eastern Box Turtle #1110’s carapace (top shell) measured 14.9 centimeters (5.9 inches) long and 12.3 centimeters (4.8 inches) wide.  He weighed 571 grams (1.26 pounds).  His girth (bottom to top) measured 6.8 centimeters (2.7 inches) at the hinge.  This hinged plastron provides a survival edge for box turtles when confronting a predator.  The anterior (front) and posterior (back) sections of the plastron swing on the hinge to close up like a sealed box … giving this turtle its common name.

Juvenile “Blue Bloods” Emerge

April 29th, 2014

Sue Wieber Nourse Examines Two Juvenile Horseshoe Crabs

Juvenile horseshoe crabs rocked Outer Cape salt marsh creeks during the April 28th flood tide.  Turtle Journal celebrates the emergence of these true “blue bloods” each spring.  We have been checking for their awakening since late March, but this year’s cold spring temperatures have prolonged their winter slumber.  (See Salt Marsh Awakening: Juvenile Horseshoe Crabs Active on Outer Cape, April 18th, 2013 and Mid-March Emergence of Juvenile Horseshoe Crabs, March 19th, 2012.)

Two Juvenile Horseshoe Crabs (Limulus polyphemus)

Admittedly, the horseshoe crabs we discovered this morning were a bit sluggish in today’s chilly water temperatures, under cloudy skies and with a stiff northeast ocean breeze.  Today’s specimens ranged in weight from a little over 1/2 ounce (17 grams) to 4 1/3 ounces (122 grams).  The horseshoe crab’s exoskeleton (shell) does not expand.  To grow, horseshoe crabs molt, as many as five times in the first year, three in the second, two in the third, and once a year thereafter until maturity is achieved.  It takes sixteen and seventeen molts respectively over a period of nine to eleven years for a male and female horseshoe crab to reach maturity.

Tiny 1/2 Ounce Juvenile Horseshoe Crab (Limulus polyphemus)

Ventral View of Juvenile Horseshoe Crab (Limulus polyphemus)

Measuring Tiny Juvenile Horseshoe Crab (Limulus polyphemus)

The tiniest horseshoe crab measured less than 2 1/4 inches (~ 6 centimeters) long (minus its tail/telson).  As you may know, horseshoe crabs are the true “blue bloods” of the animal kingdom with blood composed of copper rather than iron.  This limulus blood yields a unique and powerful gram-negative bacterial detector that saves human lives.  Horseshoe crabs have also been extremely valuable in the research of vision with both compound and simple eyes, as well as facilitating many other scientific and medical breakthroughs.

Larger (4 1/3 Ounce) Juvenile Horseshoe Crab

Ventral View of 4 1/3 Ounce Juvenile Horseshoe Crab

The largest juvenile horseshoe crab we encountered this morning measured about three times the length of the smallest and hit the scales at 4 1/3 ounces.  The ventral (bottom) view of this juvenile horseshoe crab clearly shows the five walking legs on each side, the forward feeding pincers (Chelicerae), and the rear book gills.   The telson (tail spine) is pointed directly at the camera.

Juvenile Horseshoe Crab (Limulus polyphemus)

Juvenile horseshoe crabs are delightful to watch as they plow through the sandy bottom of creek channels.  As adults, horseshoe crabs are Nature’s auto-tillers, constantly refreshing coastal tidal and inter-tidal flats.  Appearing as ancient as the earliest trilobites, horseshoe crabs stir awe in the Turtle Journal team.  Sadly, humans have harvested these valuable critters to the edge of extinction, extirpating them from one estuary after another, impoverishing our entire tidal and inter-tidal eco-systems, and driving shorebirds that survive epic migrations on nourishing horseshoe crab eggs to the brink, as well.  So, it is especially joyful each spring to find juvenile horseshoe crabs as we continue to hope for sanity to prevail among state and federal wildlife managers of this important foundational marine species.

Turtles “Spotlight” Buzzards Bay Earth Day Event

April 27th, 2014

Who’s Examining Whom? (Photo by TJ’s Sue Wieber Nourse)

On Saturday, April 26th, the Buzzards Bay Action Committee (BBAC) held an Earth Day event at the Fairhaven Senior Center on Huttleson Avenue (Route 6) in Fairhaven, Massachusetts.  Environmental, conservation and environmental groups from throughout all SouthCoast communities staffed tables packed with actionable information.  BBAC invited the Turtle Journal team to join the six hour event, and as illustrated by the photograph above, turtles “spotlighted” the day’s activities; spotted turtles, of course.

Adult Female (Top) and Male (Bottom) Spotted Turtles

This spring has been especially chilly.  With the exception of just a handful of diamondback terrapins, snapping turtles and painted turtles, only spotted turtles have been active in the wetlands of the SouthCoast.  We are very fortunate to have such gorgeous little reptiles as our earliest harbingers of spring.  It’s amazing they appear so small and delicate, yet are so hardy in the harsh spring climate.  We recently discovered this couple above at the Goldwitz Bog in a mating aggregation that has been severely degraded by debris dumped into bog channels over the last year ironically in a federally funded project to “improve” wildlife habitat.

Male Spotted Turtle (Clemmys guttata)

After spending the day meeting SouthCoast families and advocating for real wildlife habitat conservation, these handsome spotted turtles, like the adult male pictured above, headed back into wetlands mating aggregations to do their important part to advance the survival of SouthCoast turtles.

Spring Azure Butterfly at Grassi Bog

April 21st, 2014

Spring Azure Butterfly (Celastrina ladon) at Mass. SouthCoast Bog

Mid-afternoon today, April 21st, as we completed our survey of Grassi Bog on Massachusetts SouthCoast, Turtle Journal’s Sue Wieber Nourse spotted a small, bluish butterfly flittering near the wetlands edge.  Yes, we are turtle researchers, herpetologists or perhaps even turtlologists.  But when you spend your life in the field, you make all sorts of discoveries that are not limited by arbitrary boundaries and definitions.  The bounds of Turtle Journal’s interest encompass the entire scope of Nature.  So, yes; we were quite taken by this beautiful and delicate little creature.  (Click on images for enlargement.)

Spring Azure Butterfly (Celastrina ladon)

We snapped pictures of the butterfly as it alit on Don Lewis’ finger with our Pentax Optio W60 underwater camera with a special 1 cm macro lens.  With all the expensive cameras that Turtle Journal lugs around to capture the world of Nature, nothing has served us better for detailed closeup field photography.

Spring Azure Butterfly (Celastrina ladon)

Checking reference books on our return to Turtle Journal headquarters, we identified the critter as a Spring Azure Butterfly (Celastrina laden). According to Butterflies and Moths of North America, the upper side of males are blue.  Males are most active from mid-afternoon until dusk, the period when we found this specimen.

Spring Azure Butterfly (Celastrina ladon)

The habitat for the Spring Azure Butterfly is described as “openings and edges of deciduous woods, old fields, wooded freshwater marshes and swamps;” a perfect description of the long abandoned and flooded Grassi Bog.  Now that we have met this delicate butterfly, the Turtle Journal team will keep a sharp eye out for more specimens.