Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease )...

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Means of distinguishing Anopheles males and females (n.b. only females bite and transmit disease) and identification of some important vector species

Transcript of Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease )...

Page 1: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Means of distinguishing Anopheles males and females (n.b. only females bite and transmit disease) and

identification of some important vector species

Page 2: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Head of female Anopheles; note not very bushy antennae; long palps with white bands;

proboscis & compound eye.

Page 3: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Head of male Anopheles: note bushy antennae and palps with knobs

Page 4: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Anopheles gambiae; note slightly spotted legs, palps with long white apex and narrow sub-apical white band.

Page 5: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Anopheles funestus; note unspotted legs and dark body; apical and sub-apical white bands equal in length; second

most important vector in Africa; morphologically very similar to An.minimus which is one of the important vectors in S.E.Asia

Page 6: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Anopheles dirus; note white “knees” on hind legs; major malaria vector in forests of South East Asia

Page 7: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Anopheles culicifacies; note that unlike most Anopheles it does not stand with its tail in the air; includes the main rural

malaria vectors in India and Sri Lanka.

Page 8: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Anopheles stephensi: note spotted legs like An.gambiae but sub-apical white band on palps is quite long and breeding

habitat is tanks and wells in Indian sub-continent

Page 9: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

An.albimanus and An.darlingi (sub-genus Nysorryhnchus) both have white hind “feet” but differ in details of wing veins. An.albimanus is main vector in Central America and western

South America, An.darlingi main vector in north eastern South America

Page 10: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

An.maculipennis complex of sub-genus Anopheles from temperate zone with no bands on front edge of wing unlike tropical species; spots at junctions of wing veins. These were formally vectors of P.vivax

in Europe

Page 11: Means of distinguishing Anopheles males and females ( n.b. only females bite and transmit disease ) and identification of some important vector species.

Anopheles plumbeus

Note: no spots on wings, black body; bites humans and breeds in water in tree holes in London. Susceptible to infection with Plasmodium falciparum