Thursday, April 12, 2007


ANIMALS.


Bush Cricket
Grasshopper, Melamoplus Differentials

Interesting Behaviors:
Grashoppers may feed on many types of plants but some may be very fussy and feed on grass or selected species of plants.
Courtship of grasshoppers are melodious! To attract its mate, each grasshopper composes its individual song, produced by rubbing their lower back legs to create either a chirping or a clicking sound (known as stridulation). Females seem more shy and sing more softly than males, this is one way to differentiate their gender and now you know why there are always all the clicking sounds at night when walking past a field :) After mating some male species of grasshoppers may die and some females die after laying the eggs.


Golden Web Spider, Nephila Maculata

The colour of the spider's big web gave the
spider its common name, its web measuring
about 3 feet in diameter. The females of the
Golden Orb spiders reach an imposing 45mm
(nearly 2 inches) body length but they are
basically harmless. Commonly encountered
in the Wet Tropics, the Golden Orb Spiders
can also be seen around buildings.


Giant African Snail, Achatina Fulica

Snails move by alternating body contractions
with stretching, with a proverbially low speed.
They produce mucusin order to aid locomotion
by reducing friction. The mucus also reduces
the snail's risk of injury. Snails range greatly in

size. The largest land snail is the Ghana Tiger
Snail , which can measure up to 30 cm. Giant
Apple snail, is the largest freshwater snail,
with a diameter of up to 15 cm with a mass
of 600g.






















Butterfly





Ants

Ants use their antenae not only for touch, but
also for their sense of smell. Adult ants cannot
chew and swallow solid food. Instead they
swallow the juice which they squeeze from
pieces of food. Ants are clean and tidy insects.

Some worker ants are given the job of taking
the rubbish from the nest and putting it outside
in a special rubbish dump! Each colony of ants
has its own smell. In this way, intruders can
be recognized immediately
.







Garden Slug

Slugs do have a hidden shell that is located
under the mantle of its body.As burrowers
and surface feeders, the garden slugs
attack both leaf and root crops. Typically
they attack at ground level, severing the
stems of young beans or marrow plants
for example. They will also climb up and
attack the heads of cauliflowers and many
other plants or burrow down to eat the
roots of turnips or beetroot. It is a major
pest of potatoes attacking both tubers and
foliage and has been known to penetrate
the soil to as much as a yard's depth so
nothing is safe from this slug.







Spiders


Several different types of silk may be used in web construction, including a "sticky" capture silk, or with "fluffy" capture silk, depending on the type of spider. Webs may be in a vertical plane (most orb webs), a horizontal plane (sheet webs), or at any angle in between. Most commonly found in the sheet-web spider families, some webs will have loose, irregular tangles of silk above them. These tangled obstacle courses serve to disorient and knock down flying insects, making them more vulnerable to being trapped on the web below. They may also help to protect the spider from predators.

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