Male Competition
The Wood Frog (Rana sylvatica) is another early spring breeding amphibian common to our region. These explosive breeders utilize vernal pools, just like spotted salamanders, and their breeding activities are squeezed into just a few days. As the frogs enter the pools, males will take up their positions floating at the surface of the pool croaking their characteristic call. While they are calling, they will often joust with one another, especially if a female is nearby. These two males had a bit of a tousle, but both went on to call in another spot ready for females to come their way. Elyse...
Read MoreUnderwater World
While these little white puffs may look like little air pockets escaping from underwater volcanoes they are actually little spermatophores, or sperm packets produced by male spotted salamanders (Ambystoma maculatum), scattered across a vernal pool floor. As females arrive and enter ephemeral pools (sometimes up to a week after the males), males go into a frenzy. Typically the ratio of males to females in the pools is very skewed, with many males to every one female. This fuels some pretty intense male to male competition and very interesting sexual selection. Males surround females and nudge...
Read MoreSpring Migrations Have Begun!
So I’ve got a bit of a funny story for you and it goes a little something like this: last Thursday night, as we suspected, warm overnight rains began to draw spotted salamanders (Ambystoma maculatum), spring peepers (Pseudacris crucifer), and other amphibians out from their winter refuges. They began their journeys to nearby vernal pools, but some of them took detours in the process. My husband Tyler and I were house and pet sitting for my parents while they were on vacation. Behind their home is a series of ponds that make up a beautiful wetland system, and vernal pools are abundant...
Read MoreCould Tonight be the Night?!
Tonight’s conditions are looking promising for amphibian migrations to begin as overnight temperatures will be above 40°F and rain is on it’s way. While humans don’t like to be out much during rainy nights, salamanders and frogs use these evenings to migrate in mass to their vernal breeding pools. With that said, be on the lookout for these special species whether you are hiking or driving and give them plenty of space as they make their way from their wooded hiding places to their watery breeding grounds.
Read MoreAmphibian Crossing
This Wednesday or Thursday, depending on your location in the Northeast, should bring temperatures well past 40 or even 50 with rainy conditions. Since it is late March it may be the first night of amphibian migration as these are ideal conditions for frogs, toads and salamanders to emerge from hibernation and start migrating to a nearby wetland at night! Please slow down for salamanders and frogs when you’re driving back roads near wetlands – even when they don’t get crushed by your tires, the slipstream generated underneath a vehicle when you’re moving more than 20-25 MPH will pick these...
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