Archive for the ‘Wild Animals’ Category

Spotted Salamanders: From Eggs to Larvae

Thursday, April 22nd, 2010

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Spotted Salamander Larva in Protective Sac

Since torrential spring rains on March 20th and 21st, Turtle Journal has been observing and documenting the development of spotted salamander (Ambystoma maculatum) eggs within an abandoned cranberry bog in Marion on the SouthCoast of Massachusetts.  For earlier reports, see Spotted Salamander Eggs Mature in Abandoned SouthCoast Cranberry Bog, Portrait of a Spotted Salamander and “Slithering Salamanders, Turtleman! Why Did the Spotted Salamander Cross the Road?”  Within the last few days, larvae have progressed quickly to nearly release state within their individual protective sacs.

Development of Spotted Salamander Eggs and Larvae

Combining original Turtle Journal footage with material from Yale University in 1920, the video clip above documents the development phases of spotted salamander eggs.  Still images below were taken within the last 24 hours and show the current state of salamander larvae development on the SouthCoast of Massachusetts as of April 22nd.  A few of the larvae were spotted free-swimming in vernal pools adjacent to an abandoned cranberry bog in Marion.

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 Spotted Salamander Egg Mass in SouthCoast Vernal Pool

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 Spotted Salamanders Develop in Individual Sacs

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Individual Sac Holds Developing Spotted Salamander

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Spotted Salamander Larva Develops Gills and Stabilizers

Spotted Salamander Eggs Mature in Abandoned SouthCoast Cranberry Bog

Friday, April 16th, 2010

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Maturing Spotted Salamander Egg Sacs

Turtle Journal returned to an abandoned SouthCoast cranberry bog today to check on spotted salamander egg sacs that were deposited and fertilized during the torrential rains of late March.  See “Slithering Salamanders, Turtleman! Why Did the Spotted Salamander Cross the Road?” and Portrait of a Spotted Salamander.  The water level has dropped sufficiently to expose many of the sacs in suspended branches.

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Spotted Salamander in Late March Mating Aggregation

The (yellow) spotted salamander pictured above was discovered by the Turtle Journal team in a mating aggregation during a nighttime storm in late March.

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Close Up of Spotted Salamander Eggs Shortly after Deposition

These mating aggregations became filled with floating, slightly submerged, jello-like sacs the size of bulging Italian egg plants, each of which might contain a hundred or more individual eggs.  The photograph above was taken in the dark of night, which accounts for its lack of sharpness, but illustrates what individual eggs resemble shortly after deposition.

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Spotted Salamander Egg Sac Nearly Three Weeks Later

Now, we are nearly three weeks after spring rains and the mating aggregation.  The egg sacs are maturing as are the eggs within them.

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Close Up of Maturing Spotted Salamander Eggs

This close-up photograph taken today, April 17th, shows the changes that have occurred with the eggs since deposition and fertilization in late March.

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Spotted Salamander from March Mating Aggregation

Perhaps, with a little luck, we’ll soon see the next generation of spotted salamanders, some of which may become like this splendid specimen we encountered in the dark, spring rains of late March.

Egg Hunt: Who Needs Bunnies When You Have Swans?

Sunday, April 4th, 2010

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Pair of Mute Swans (Cygnus olor) in Marion’s Spragues Cove

A pair of mute swans (Cygnus olor) have taken possession of the Spragues Cove pools and have built a nest on an artificial island separating the second and third pools.

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Mute Swan Leaves Nest on Artificial Island

As we explored the cove and its pools on Saturday, we spotted one of the swans taking a break from sitting on the nest. 

Mute Swan Nest in Spragues Cove 

We carefully investigated the nest while the swans foraged out of sight, careful not to contaminate the nest with human touch and scent. 

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Mute Swan Egg with Quarter for Sizing

Who needs an Easter bunny when you have a pair of swans to provide an oversized egg for the basket.  Unfortunately, we suspected the swans would not have accepted the egg back into the nest with chartreuse coloring.  So, we carefully disguised our presence before the pair returned to incubate the nest.  We watched closely to ensure that the swans accepted the egg and we returned again today, Sunday, to check again.  The pair continue to take turns incubating the egg.  Hopefully soon Turtle Journal will be able to document the newest member of the swan family for our readers.

Peep Show at Turtle Journal Traveling Lightwave Carnival

Saturday, April 3rd, 2010

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Mating Pair of Spring Peepers (Pseudacris crucifer) 

Step right up, ladies and gentlemen.  Push forward, kiddies; press your nose flat against the dazzling, fantasmagorical glass window.  Never before in the history of humankind has a virtual Peep Show offered such eye-popping, extra-ordinary sights and ear-splitting, explosive sounds right here in the Turtle Journal Traveling Lightwave Carnival, a Nature extravaganza so big it has tent flap, magic carpet openings built into every single digital computer and high speed handheld device on Planet Earth.

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NO EXCEPTIONS … YOU MUST BE THIS TALL TO ENTER

Be warned and beware!  Once you enter the mysterical world of Turtle Journal, there’s no way out until you pass through the mouth of the Enormous Egress at the other end of the posting.

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Spring Peeper Pair from Outer Cape Cod Vernal Pool

Turtle Journal hiked a conservation trail in South Wellfleet Friday to search a series of vernal pools and swampy ponds where we have always found the very loudest and most cacophonous springtime serenades.  Even in bright sunshine, with temperatures dipping back into the 40s, only a few, isolated peepers screeched for amorous attention.  Luckily for us, Sue Wieber Nourse spotted a fast moving critter zigzagging through the mucky leaf matter at the bottom of a quickly evaporaping vernal pool.  Lo and behold, we discovered a mating pair of secretive spring peepers (Pseudacris crucifer).

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Spring Peeper Pair — Not Even a Handful

Truth to tell, and we always try to tell the truth unless it gets in the way of a good story; we didn’t notice the pairing until we examined it up close and personal.  This twosome had so closely embraced that they moved like one with the female providing all the locomotive power as illustrated in the following video clip.

Spring Peeper Mating Pair on Outer Cape Cod

Notice how tightly the two peepers are bound together and how powerfully the female springs forward with the male clinging to her back for dear life. 

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Female Spring Peeper

Spring Peepers are small “chorus” frogs whose mating calls we recognize each March as the beginning of spring serenade in wetlands across the Great White North.   They are brown colored with a darker “X” on their back (dorsal side) which yields the Latin species name crucifer (cross bearer).

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Spring Peepers in Conubial Bliss

Females are a bit larger than the males as illustrated in our pair pictured above.  Unsurprisingly, it is the male of the species that makes the loud, raucous mating calls that we recognize as the peeper chorus each spring.  “Won’t someone love me?” they screech at the top of their lungs.

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CAUTION:  Click Here to Enter the Mouth of the Enormous Egress

Portrait of a Spotted Salamander

Wednesday, March 31st, 2010

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(Yellow) Spotted Salamander (Ambystoma maculatum)

Well, I guess it depends on your point of view.  From our viewpoint, these spotted salamanders are really cool critters.  So secretive in these parts that you rarely find them except during their annual spring norturnal mating orgy in the absolute worst of weather conditions, the improbabilty of encountering spotted salamanders definitely enhances the value of the moment.  With the series of snapshots in this posting, we present a portrait of a spotted salamander.  Note that each picture is hyperlinked to a larger sized image when clicked.

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Spotted Salamander Body

Quite a handsome specimen.  Check out the four digits on the front limbs and five on the back.  Also, note the two parallel rows of yellow spots along the length of the salamander’s body.

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Spotted Salamander

A real cutey as this critter mugs for the camera.  Every couple of minutes, the salamander slurps its tongue in and out faster than the photographer can click the camera.

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Spotted Salamander Profile

Augmenting the exquisite yellow dots painted in a parallel series along its dorsal surface, these salamanders have constellations of smaller blue-gray spots along their sides, under their chins and on their ventral surfaces.

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A Face That Only a Mother and Turtle Journal Could Love

We don’t know about this salamander’s mother, but we do know that Turtle Journal thinks this critter has quite a compelling portrait.

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Spotted Salamander: Up Close and Personal

Who could resist that enigmatic amphibian smile?