Jumping Out of My Skin

By: Ania Lewis ~ Ms. Vu - PAP Biology - Period 4th

Grasshopper Integumentary System

Objectives

  • We will explore the internal and external parts of an arthropod

  • We will cover the organs and other parts of the arthropod

  • We will learn the functions and locations of these organs

  • We will study the structure and functions of arthropods

Background Information

  • The grasshopper’s scientific name is Melanoplus differentialis

  • Grasshopers live in meadows, grasslands, and other open areas

  • Preyed on by birds, snakes, rodents

  • Eat leafy plant material

  • Taxonomy

      • Kingdom: Animalia

      • Phylum: Arthropoda

      • Class: Insecta

      • Order: Orthoptera

      • Family: Acrididae

      • Genus: Melanoplus

      • Species: differentialis

  • Evolution

      • Strong jaws to grab and chew foods

      • Feelers around their mouth taste food

      • Hind legs allow grasshopper to jump high and long when in danger

      • Weak eyesight, depends on antennae

      • Antennae can detect moisture, identify food, and sense chemicals in the air

  • Human Impact/ Influence

      • Grasshopper Plagues - agricultural pests that destroy crops and farmlands

      • Source of food especially in many eastern cultures (nutritious and delicious)

      • Grasshopper waste and body decomposition fertilize the soil

      • Grasshoppers are used in medical research such as the nervous system

      • Grasshoppers are a food source for birds that humans hunt

Integumentary System

  • Organs: Exoskeleton, segmentation,

    • Exoskeleton-

      • protects the insect

      • provides support

      • acts as a barrier against water loss

      • made of chitin

      • calcium carbonate also plays a part in helping the exoskeleton be harder and stronger

    • Segmentation-

      • Segmentation is required in order for the insect to have easier, flexible movement

      • Divides the body into numerous sections – 3 in grasshoppers

        • Head, thorax, abdomen

          • Head

            • Contains mouth, eyes, and antennae

          • Thorax

            • Consists of the prothorax, mesothorax, and metathorax

          • Abdomen

            • Contains cerci, a pair of jointed appendages

        • Each segment contains a pair of legs

      • Segmentation follows a longitudinal axis of radial symmetry

Extra Information

  • Grasshoppers have wings and antennae

  • Grasshoppers have a ventral nerve cord

  • Their hearts are located on the dorsal side of their body

  • Grasshoppers have a tracheal respiratory organ

  • The name of their excretory organ is Malpighian tubules

  • Grasshoppers have an open circulatory system