Yesterday, I added a new species to the Blue Jay Barrens
salamander list. Marbled Salamander, Ambystoma opacum, is a species that I
read about and was fascinated by while I was in the fifth grade. After decades of waiting, this is my first
ever wild encounter with this species.
Like other Ambystomas, Marbled Salamanders utilize temporary
pools as egg laying sites. The thing
that sets this species apart though, is the fact that it breeds in the fall and
places eggs in the pool while the site is still dry. Eggs hatch when winter rains fill the
pools. This gives the Marbled Salamander
larvae a head start and slight advantage over those species that place their
eggs in the pool later in the season.
Marbled Salamander larvae can sometimes be serious predators of smaller
salamander larvae and frog tadpoles.
The black and white coloring of this animal is quite
striking. Thick rain clouds cast a decidedly gloomy pall over the forest floor,
but this bright little salamander glowed as if carrying an inner light. If the
coloration is intended as a type of camouflage, it was certainly falling short
of the mark on this day.
It’s certainly exciting to have this species is a local
resident. I hope to encounter many more of its kind in the years to come.
Neat salamander. Never heard of it before, but a striking appearance. Haven't ever heard of it in Ontario.
ReplyDeleteHi, Stew. Marbled Salamander makes it to the south shore of Lake Erie, but goes no further north.
DeleteI'm sure the coloration of this salamander is a warning to predators that it is toxic. It's not meant to be camouflage.
ReplyDeleteThanks, Mark. That makes sense.
Delete