中国福利彩票下载安装αpp LIFE SCIENCE OBSERVATIONS
Frog Development from Tadpole to Froglet to Adult
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American Bullfrog Metamorphosis: Tadpole to Frog
This page is devoted to bullfrog tadpole metamorphosis with photos of our bullfrogs at different stages of their development. Below are photos and descriptions of the three bullfrog tadpoles that we followed through metamorphosis.
from , and housed them in a 10-gallon aquarium. When the tadpoles arrived, they were all about the same size and very similar in appearance, so we named them all Tad.
For several months the tadpoles just grew bigger, but not at the same rate, so they ranged in size from very big Tads to teeny Tads. Here are pictures of our tadpoles before they began metamorphosis.
Top left: The tadpoles were shipped to us in Michigan during winter. They arrived in a large cardboard shipping box with a Styrofoam box inside and a heat pack. Top right and directly left: The tadpoles mouths are surrounded by little "whiskers" to help them suck up algae and nibble on plants in the tank.
Above left: Side view of American bullfrog tadpole.
and directly right: Although similar in size when shipped to us, the tadpoles grew at different rates.
American Bullfrog Metamorphosis
Since we received the tadpoles in December 2012, all have died. Four died as tadpoles and one jumped out of a small opening in the tank, after changing into a frog (we have since closed that opening). "Lumpy", our bullfrog superstar, only recently died, but lived to ripe old age of three years.
Below are the three tadpoles that we have tracked, or are tracking through metamorphosis: Biggie Tad, Lumpy & Tiny Tad. Biggie is the frog who died after jumping out of the tank.
Rear legs first appeared 5/17/13
Two days later rear legs larger and bend at knee 5/19/13
Rear legs well-developed 6/9/13
Tadpole has front legs and body begins to change shape 6/18/13
Tadpole looks like a frog with a tail 6/21/13
to reabsorb tail 6/23/13
Biggie Tad is a frog 6/25/13
Time Table for
BIGGIE TAD's Metamorphosis
- Tadpole ~ 9 months old before began metamorphosis.
- Began metamorphosis 5-17-13: Rear legs appeared.
- 23 days: Rear legs continued to grow.
- 32 days: Front legs appear and head begins to change shape.
- 35 days: Tadpole looks like frog with tail. Begins reabsorbing tail.
- 37 days: Froglet continues reabsorbing tail.
- 39 days: Metamorphosis complete.
Latest Tadpole News
Sad news today. Lumpy, the little bullfrog we raised from a tadpole 2 years ago, died of unknown causes today.
Thanks for showing us how cool frogs are!
> See Lumpy's Story
See Page 2 to meet our most famous bullfrog "Lumpy" and watch a tadpole video!!
The information on this page falls into four categories:
- Bullfrog tadpoles before metamorphosis.