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Animals of the Ecocolumns

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					Animals of the Ecocolumns
Isopods
  Iso is Greek for "similar or equal." Pod
means "foot." Put them together and you
have the isopod, an organism that has an
   equal number of feet or legs on both
sides with all legs similar to one another.
Isopods have 14 legs that all function the
                   same..
              Adult Males and Females
 On the underside, females have leaf-like growths at
    base of some legs. These brood pouches hold
     developing eggs and embryos. The first two
  appendages on the male abdomen are modified as
             elongated copulatory organs.
            Immatures (different stages)
 The immature isopod molts four or five times. They
look like adults except for size, proportion, color and
                 sexual development.
                   Natural History
                         Food
Isopods are detrivores or scavengers feeding on dead
  or decaying plants or animals. Some may eat live
                         plants.
                        Habitat
 Isopods breathe with gills, so they are restricted to
areas with high humidity, under rocks or logs, in leaf
                 litter or in crevices.
Crickets
                 EARS ON KNEES?
    Crickets have a special eardrum for hearing,
    but it's not where you'd expect. If you look
  closely at the front leg right below the elbow,
     you will see a small pale spot that is the
   eardrum. It is not well known how precise a
cricket's hearing is, but you can imagine that it's
  good enough to hear the song of a potential
                        mate.

				
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posted:8/25/2011
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