More than 35 years later, Bdellovibrio biology is undergoing a revival owing to the original, pioneering genetics work of Thomashow and colleagues (13), which has been followed up by genome sequencing and the development of new gene inactivation methods to study the function of these bacteria (32, 42, 60).
They also have five pairs of eyes. The Freshwater Leech is a parasite that feeds on the blood of fish, frogs, turtles, and mammals. It should not be confused with other leeches, most of which prey only on insects, snails, and small creatures.
A. Jelly-like masses of eggs are called frog's spawn. Here's how frog spawn happens: A female frog lays eggs under water, usually in the spring. She may lay as many as 20,000 eggs. The male frog climbs on her back and fertilizes the eggs as they are laid.epending on the species, it can take a few weeks to a year or more for the tadpoles to grow up. frogs who live in dry places where rains are seasonal have to grow up quickly because the tadpoles will die if their temporary ponds dry up first. Copyright 1997-2015 Journey North.