郑州大学：蚊子的生命循环（PPT讲稿）Life Cycle of a Mosquito

Mosquitoes

Mosquitoes

More than 3000 species of mosquitoes have been described on a world-wide basis. Scientists group species by genus on the basis of the physical characteristics they share. The 3000 mosquito species found in the world are divided among 28 different genera. The genus Aedes contains some of the worst pests. Many members of the genus Anopheles have the ability to transmit human malaria

• More than 3000 species of mosquitoes have been described on a world-wide basis. Scientists group species by genus on the basis of the physical characteristics they share. The 3000 mosquito species found in the world are divided among 28 different genera. The genus Aedes contains some of the worst pests. Many members of the genus Anopheles have the ability to transmit human malaria

There are three genera of medical mportance Culex Aedes Anopheles

• There are three genera of medical importance: • Culex • Aedes • Anopheles

Morphology Body: small, fragile, 3-6mm long 2. Distinguishing of sexes 1) Antenna: plumose in male, pilose in female °2)Palp 3) External genitalia 3. Mouthparts, piercing and sucking type Proboscis and 6 needles

Morphology • 1. Body: small, fragile, 3-6mm long • 2. Distinguishing of sexes: • 1) Antenna: plumose in male, pilose • in female • 2) Palp • 3) External genitalia 3. Mouthparts, piercing and sucking type. Proboscis and 6 needles

Egg Elongate elipsoid, about 2 mm ° Anopheles egg,,The eggs have distinct lateral floats

Egg • Elongate elipsoid, about ½ mm. • Anopheles egg, The eggs have distinct lateral floats

Anopheles sp egg with tuberculated surface and a distinct float in the center ° Anopheles eggs.,with a larva emerging. The eggs have distinct lateral floats which easily differentiates them from culicine eggs

• Anopheles sp egg with tuberculated surface and a distinct float in the center. • Anopheles eggs, with a larva emerging. The eggs have distinct lateral floats which easily differentiates them from culicine eggs

edes egg · Laid singly in or near water

Aedes Egg • Laid singly in or near water

Larva(wigglers) a newly emerged anopheles(1st instar larva)

Larva (wigglers) • A newly emerged anopheles (1st instar larva)

Pupa · Like a. divided into cephalothorax and abdomen It moves actively but takes no more food

Pupa • Like a “,” divided into cephalothorax and abdomen. It moves actively but takes no more food

Morphological difference of three genera

Morphological difference of three genera