Illustrated Life Cycle of Echinostoma

Författare/Upphovsman:

en:Centers for Disease Control and Prevention

Kreditera:

Global Health - Division of Parasitic Diseases and Malaria, part of the Centers for Disease Control and Prevention (CDC). https://www.cdc.gov/dpdx/echinostomiasis/index.html

Kort länk:

https://sewiki.info/b/c3f13

Källa:

Wikimedia Commons

Upplösning:

582 x 435 Pixel (59015 Bytes)

Beskrivning:

(1) Unembryonated Echinostoma eggs in the faeces of an infected host become embryonated in water (2). Larval development begins and miracidia hatch from the egg. Miracidia penetrate an intermediate snail host (3). Asexual reproduction of the parasite occurs in the snail (4). Cercariae emerge from the snail and infect a second intermediate host (5). A definitive host, such as a bird or human, consumes an infected intermediate host (6) and becomes infected. The parasite excysts in the intestine of the definitive host (7) and the adult worms mature in the small intestine (8).

Licens:

Public domain

Licenskommentaren:

This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.