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Diptera
Nematocera Brachycera Cyclorrhapha
Ceratopognidae
(Midges) Simulidae
(Black fly)
Psychodidae
(Sand fly)
Culicidae
...
Nematocera Brachycera Cyclorrhapa
Size
Antenna
Mouth part
&
Maxillary Palps
Piercing-sucking Mouthparts Slashing-sponging ...
Nematocera Brachycera Cyclorrhapa
Wing
(Cross Vein)
Sand fly
Black fly
Mosquitos
Tabanus Musca domestica
Stomoxys calcitra...
Nematocera Brachycera Cyclorrhapa
Larval Head
Pupa
Obtectate Usually Obtectate Coarctate
Larva of Musca domestica
Pupa Mus...
Culicidae
(Mosquitoes)
The most veterinary important –
 Anopheles spp (Anopheles vagus, An. Aconitus, Anopheles annularis...
Anatomy of MosquitosMorphology
Scales= leaf like,
fringed cvo/AvPjv
(Wegede shaped)
Empodium, pad like
structure
Pulvilli
Claw
Johnston’s organ=Mechanoreceptors
(at 1st two segments of antennae)
Leg of a Mo...
Mouthpart of Mosquito
Lingua (between labella)
Fascicle/Stylet
Labrum
Maxilla (Paired, serrated tip)
Hypopharynx (carry sa...
Culex
(Living Adults) : Resting Position
Anopheline (Anopheles) Culicine (Aedes and Culex)
Hump back appearance
Anopheline (Anopheles) Culicine (Aedes and Culex)
Adult
Fallagelum
* Sound
receptor
Clubbed
TaperedLaterally directed
Uptu...
Shape of Scutellum Anopheline Culicine
Evenly curved and
regular row of setae on
the posterior border
Trilobed and setae i...
Key to the genera of the family Culicidae
Anopheles Culex
Aedes aegypti Aedes albopictus
Key to Aedes
Lyre
Anopheline Culicine
Eggs
Boat shaped eggs
Egg raft (Culex), Singly Aedes
Egg shell/Chorion
Chorion (Air filled
compartment...
Anopheline Culicine
Larva/Wigglers (Apodus)
Palmate hairs= 10-20 radiating leafletes
Chewing Mouth part
Spiracular vulve
S...
Larval Respiration
Pupa/Tumblers
Aedes CulexAnopheles
Tracheal system and cuticular respiration by larvae
Short broad brea...
Eggs
Float
Respiratory siphon
Palmate hairs
Feeding
Respiratory trumpet
Adult (palp)
Scutellum
Scales
Resting position
At ...
Vector Importance
Agents Disease Vector (s)
Plasmodium spp of mammals Malaria Anopheles (primary host)
Yellow fever virus
...
Control and prevention:
 Oil based insecticide for the Culicid larvae
Larvicidal compound and Larvicidal fish (Gambusia ...
Measures against Adults:
 DDT (Banned), insecticidal effect remain 6 to 12 months
 HCH and BHC (Benzene Hexachloride), L...
Prepared by DR. Md. Abdul Alim
Assistant Professor
Department of Pathology and Parasitology, CVASU
and PhD fellow, James C...
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Mosquito presentation, Md Abdul Alim, Chittagong Veterinary and Animal Sciences University, Bangladesh

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Mosquito presentation

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Mosquito presentation, Md Abdul Alim, Chittagong Veterinary and Animal Sciences University, Bangladesh

  1. 1. Diptera Nematocera Brachycera Cyclorrhapha Ceratopognidae (Midges) Simulidae (Black fly) Psychodidae (Sand fly) Culicidae (Mosquitoes) Muscidea (House & Stable fly) Calliphoridae (Blow fly) Hippoboscidae (Forest fly & keds) Oestridae (bot fly) Tabanidae (Horse fly) Classification of Diptera Order Sub-Order Family Arthopoda InsectaClass Phylum
  2. 2. Nematocera Brachycera Cyclorrhapa Size Antenna Mouth part & Maxillary Palps Piercing-sucking Mouthparts Slashing-sponging Mouthparts Sponging Mouthparts Plumose Pilose Stylet type Arista Type Differences among the sub-orders Palp
  3. 3. Nematocera Brachycera Cyclorrhapa Wing (Cross Vein) Sand fly Black fly Mosquitos Tabanus Musca domestica Stomoxys calcitrans
  4. 4. Nematocera Brachycera Cyclorrhapa Larval Head Pupa Obtectate Usually Obtectate Coarctate Larva of Musca domestica Pupa Musca domestica Larva of Tabnus Pupa of Tabnus Example??
  5. 5. Culicidae (Mosquitoes) The most veterinary important –  Anopheles spp (Anopheles vagus, An. Aconitus, Anopheles annularis) Culex spp (Culex pipiens) Aedes spp (Aedes aegypti, Ae. Albopictus) Anopheles Culex Aedes
  6. 6. Anatomy of MosquitosMorphology Scales= leaf like, fringed cvo/AvPjv (Wegede shaped)
  7. 7. Empodium, pad like structure Pulvilli Claw Johnston’s organ=Mechanoreceptors (at 1st two segments of antennae) Leg of a Mosquito Antenna of a Mosquito Antenna can detect host odoor
  8. 8. Mouthpart of Mosquito Lingua (between labella) Fascicle/Stylet Labrum Maxilla (Paired, serrated tip) Hypopharynx (carry salivary duct) Mandible (Paired, pointed tip)
  9. 9. Culex (Living Adults) : Resting Position Anopheline (Anopheles) Culicine (Aedes and Culex) Hump back appearance
  10. 10. Anopheline (Anopheles) Culicine (Aedes and Culex) Adult Fallagelum * Sound receptor Clubbed TaperedLaterally directed Upturned
  11. 11. Shape of Scutellum Anopheline Culicine Evenly curved and regular row of setae on the posterior border Trilobed and setae is grouped on the lateral and median lobes Distribution of scales on Abdominal sterna and also terga: Completely or largely devoid of scales Uniform layer of scales
  12. 12. Key to the genera of the family Culicidae Anopheles Culex
  13. 13. Aedes aegypti Aedes albopictus Key to Aedes Lyre
  14. 14. Anopheline Culicine Eggs Boat shaped eggs Egg raft (Culex), Singly Aedes Egg shell/Chorion Chorion (Air filled compartment)=Float Cup shaped Corolla 1mm long 3-4mmX2-3mm 100-150/batch at night on water surface
  15. 15. Anopheline Culicine Larva/Wigglers (Apodus) Palmate hairs= 10-20 radiating leafletes Chewing Mouth part Spiracular vulve Siphon Aedes = short siphon Culex = Long and slender siphonNo Siphon No Palmate hairs
  16. 16. Larval Respiration Pupa/Tumblers Aedes CulexAnopheles Tracheal system and cuticular respiration by larvae Short broad breathing/air trumpet, distally expanded Long narrow breathing trumpet, tubular Paddle (at 9th segment) Adult emergence: Gas accumulation at midgut and spilt appears mid-dorsally of the pupal cuticle Respiratory siphon/siphon
  17. 17. Eggs Float Respiratory siphon Palmate hairs Feeding Respiratory trumpet Adult (palp) Scutellum Scales Resting position At a glance Example
  18. 18. Vector Importance Agents Disease Vector (s) Plasmodium spp of mammals Malaria Anopheles (primary host) Yellow fever virus Rift vally fever virus Yellow fever Rift vally fever(Southern Africa) Aedes Dengue virus (DEN virus) Dengue Aedes (A aegypti and A albopictus) Chikungunya (CHIK) virus Africa, India and Southestern Asia Dengue like Arthralgic illness Aedes Borerelia anserina Fowl spirochaetosis Aedes Plasmodium spp of bird Avian Malaria Culex , Anopheles and Aedes Wuchereria bancrofti Filariasis/Elephatiasis Culex ,Aedes and Mansonia (I/H) Dirofilaria immitis Dirofilariosis Anopheles, Culex and Mansonia (I/H) Brugia malayi Filariasis (Indonesia, South east Asia and Srilanka) Mansonia and Anopheles
  19. 19. Control and prevention:  Oil based insecticide for the Culicid larvae Larvicidal compound and Larvicidal fish (Gambusia spp) Paris Green mixed with Kerosene (carrier) effective larvicidal Pyrethrum, Organophosphorus compounds (Difenphos, Fenthion) Chlorinated Hydrocarbon (DDT; banned, dieldrin, chlordane) Surface applied dust for the Anopheline larvae Temephos larvicide (organophosphorus) applied with granular formulation Disintegrates slowly and long tem effect  No toxic barrier on water surface by water insulable sufactant (Lecithin) for pupae  Introudction of invetebrate predators Fungus (Lagenidium giganteum) and Protozoa  Bacteira (Bacillus sphaericus and B thuringiensis) highly toxic to larvae Management: Measures against immature stages:
  20. 20. Measures against Adults:  DDT (Banned), insecticidal effect remain 6 to 12 months  HCH and BHC (Benzene Hexachloride), Lindane (Gamma isomer, have musty odor and expensive, More toxic than DDT, Used as spray, Banned) Dieldrin, a Chlorinated hydrocarbon (used as spray), banned Malathion, an organophosphorus, broad spectrum insecticide, effect 6 months (spray) Pyrethrins and Pyrethroids (Popular) , also repellent Indalone and dimethyl phthalate (as repellent, WHO recommended Managemetal approaches
  21. 21. Prepared by DR. Md. Abdul Alim Assistant Professor Department of Pathology and Parasitology, CVASU and PhD fellow, James Cook University, Australia email: mdabdul.alim@my.jcu.edu.au References 1. D.S., Kettle (2000). Medical and Veterinary Entomology, CAB International,2nd edi,pp… 2. Gary and Lance, (2009). Medical and Veterinary Entomology. 2nd Edn, Elsevier, Inc, pp… 3. E J L Soulby (1982). Helminths, Arthopods and Protozoa of Domestic animals, ……….. 4. G.M.Urqhart., J.Armour., J.L.Duncan., F.W. Jennings., (1966). Veterinary Parasitology, Black well Science Ltd.,2nd edi.pp: THANKS

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