Veterinary Entomology And Protozoology Laboratory Activity 1 PDF

Veterinary Entomology and Protozoology Laboratory VPARA 3 200 Lab Dr. Michael Deither T. Agdippa Insect Morphology Exercise 1 External Anatomy Cockroach External Anatomy Head Mouth parts Labrum- fl a t t e n e d terminal sclerite of the...

Veterinary Entomology and Protozoology Laboratory VPARA 3 200 Lab Dr. Michael Deither T. Agdippa Insect Morphology Exercise 1 External Anatomy Cockroach External Anatomy Head Mouth parts Labrum- fl a t t e n e d terminal sclerite of the dorsal side of head capsule Mandible-Thick, hard and triangular appendages beneath the labrum First Maxillae- Located on each side of the mouth next to mandibles  Mouth parts Labium- fused second maxillae that covers the mouth from the ventral side Hypopharynx- a small, cylindrical mouthpart, sand witched between fi r s t m a x i l l a e a n d covered by labrum and labium on dorsal and ventral sides respectively Compound Eye Mosaic Vision Simple Eye/Ocelli Leg of Cockroach Prothoracic Mesothoracic Metathoracic Leg of Cockroach Coxa- it attaches the leg to the thorax Trochanter- acts like a knee Femur and Tibia- resemble thigh and shin bones Tarsus- these are segmented, act like an ankle and foot Posterior Abdominal Segments A. male dorsal view B. male ventral view C. female dorsal view D. female ventral view Digestive System Nervous System Sensory Structures Thigmoreceptors: They are receptors of touch. Olfactory receptors: They receive various smells. Gustatory receptors: They are for sense of taste. Thermoreceptors- detect changes in temperature, present on the pads between the first four tarsals. Auditory receptors- for hearing, present on the anal cerci respond to air or earth-borne vibrations. Circulatory System Blood vascular system is open and lacunar type Respiratory System Consist of a network of trachea Open through 10 pairs of small holes called spiracles Excretory System Excretion is performed by Malphigian tubules Each tubule is lined by glandular and ciliated cells. They absorb nitrogenous waste products and convert them into uric acid which is excreted out through the hindgut. Reproductive System-Male sexes are separate, dioecious testes are located in the abdominal segments 4, 5, and 6 All sperms of a seminal vesicle are glued together into a large bundle called spermatophore. Reproductive System-Female Consist of ovaries, vagina, genital chamber, spermathecae, colleterial glands and female ganopophysis Ovaries are located in the abdominal segments 2 to 6. Each ovary consists of eight ovarioles Ootheca of cockroach contains sixteen fertilized eggs. Ootheca of cockroach is formed of a protein secreted by colleterial glands. ootheca END Reference: https://biology4isc.weebly.com/morphology-and- anatomy-of-cockroach.html Things to bring next meeting... Dissecting kit Styrofoam Pin Pencil Coloring materials Cockroach (Dubia roach) 2 each group Trash bag