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Dr. PARVISH PANDYA’s presentation
“Mouth-parts ofInsects”
A presentation compiled from various sources by
Dr. PARVISH PANDYA,Zoology Dept. Bhavan’s College, Andheri.
Dr. PARVISH PANDYA’s presentation
Sites from which presentations have been downloaded and later editted. I am indeed thankful to them for their kindness and support :http://esg-www.mit.edu:8001/esgbio/cb/org/organelles.htmlhttp://faculty.pnc.edu/jcamp/parasit/parasit.htmlhttp://www.amnh.org/rose/hope/creatinghope/http://www.biology.eku.edu/SCHUSTER/bio%20141/POWERPOINT%20NOTES/Intro%20to%20Protozoa_files/fullscreen.htmhttp://www.biosci.ohio-state.edu/~zoology/eeob405/http://www.tulane.edu/~wiser/protozoology/pwpt/http://www.iep.water.ca.gov/suisun/photos/wildlife.htmlhttp://www.uta.edu/biology/marshall/2343/http://www.uta.edu/biology/faculty/faculty.htmlhttp://www.okc.cc.ok.us/biologylabs/Documents/Zoology/PowerPoint.htmhttp://bio.fsu.edu/http://www.aw-bc.com/http://www.nhm.org/http://www.geo.cornell.edu/eas/education/course/descr/EAS302/presentations/
It is very easy to find mistakes in these presentations…..I request you to kindly rectify them and supply me the modifications needed at [email protected] a lot and have fun in teaching & learning Zoology….
Dr. PARVISH PANDYA’s presentation
Insect Mouthparts
Dr. PARVISH PANDYA’s presentation
animal
Insects utilize nearly every organic substance
plant
solid liquid
Dr. PARVISH PANDYA’s presentation
Head
Important external features:1) Antennae -- contain chemical, olfactory, tactile, and auditory receptors. Can also sense vibrations.2) Compound eyes (vision/movement/color) and dorsal ocelli (light detection). Many insects perceive ultraviolet, blue-green and red wavelengths.3) Specialized mouth parts – food gathering, defense.
Dr. PARVISH PANDYA’s presentation
Basic Structures of Insect Mouthparts
• One labrum – upper lip
• Two mandibles - jaws
• Two maxillae – saw-like
• One labium – lower lip
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
1. Chewing Mouthparts
• The “classic” design• Cockroaches, grasshoppers, beetles, etc.• Chewing lice, order Mallophaga• Many immatures, including nymphs and
larvae
Dr. PARVISH PANDYA’s presentation
BEETLES
2 general types:1) mandibulate: specialized for biting off and chewing food
(most nymphs)2) haustellate: specially adapted for piercing and sucking
(e.g. mosquitoes and dipterans).
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
Food sa
liva
Dr. PARVISH PANDYA’s presentation
2. Rasping - sucking
• Thrips
• Left mandible, • two maxillary stylets
Dr. PARVISH PANDYA’s presentation
Gladiolus thrips
Lily bulb thrips
Banded thrips
Heterothrips salicis
Large-legged thrips
Greenhouse thrips
Pear thrips
Dr. PARVISH PANDYA’s presentation
3. Piercing-Sucking Mouthparts
• Hemiptera and Homoptera (true bugs)
• Sheath-like labium, four piercing stylets (2 mandibles, 2 maxillae)
Dr. PARVISH PANDYA’s presentation
• piercing-sucking mouthparts• extraoral digestion• salivary glands• plant necrosis, animal stunning and poisoning• stylets – piercing and grooved
BUG BEAKS
Dr. PARVISH PANDYA’s presentation
Both Hemipteransfeed on blood
Triatomine bug,Rhodnius
Bedbug, Cimex
Dr. PARVISH PANDYA’s presentation
4. Diptera: Mosquito subtype• Six stylets enter host
skin (two mandibles, two maxillae, labrum, and hypopharynx
• Labium acts as protective sheath and folds back as styletsenter skin
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
4.Diptera: Sponging muscoid fly subtype
• House fly, face fly
• Labellum with labrum-epipharynxand hypopharynxform food canal
Dr. PARVISH PANDYA’s presentation
FLIES
Order Diptera
Dr. PARVISH PANDYA’s presentation
doohickies
(that's a scientific word meaning "I can't rememberwhat they are called")
orAn unnamed gadget
Dr. PARVISH PANDYA’s presentation
• Haustellumpenetrates skin; labrum and hypopharynx form food and salivary canals
• Louse flies (Diptera)
• Hippoboscidae -includes sheep ked
4. Diptera: Louse fly subtype
Dr. PARVISH PANDYA’s presentation
• Ventral stylet(perhaps labium) is principal piercing organ. Intermediatestylet (perhaps hypopharynx) and dorsal stylet (perhaps fused maxillae) penetrate skin
• Sucking lice
5. Lice: piercing-sucking
Dr. PARVISH PANDYA’s presentationProboscis (galae of maxillae) forms food canal
6. Siphoning: Lepidoptera
Dr. PARVISH PANDYA’s presentation
Lepidoptera
Dr. PARVISH PANDYA’s presentation
Dr. PARVISH PANDYA’s presentation
7. Chewing-siphoning: Hymenoptera
Mandibles for chewing and labial glossa for siphoning. Example: honey bee
Dr. PARVISH PANDYA’s presentation
Hymenoptera
Dr. PARVISH PANDYA’s presentation
Non-insect : Ticks and mites
• Chelicerae cut skin
Dr. PARVISH PANDYA’s presentation
Tick head
Blood Pool
Dr. PARVISH PANDYA’s presentation
chelicera
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