Kingdom Animalia Parasites: Roundworms

Question 1

Ascaris lumbricoides

Answer 1

-Type of worm: Nematode/ Roundworm
-Mode of Transmission: ingest egg/ ova (in soil)
-Infective Stage: egg
-Hosts: Human
-Disease: Ascariasis
>over a billion people infected worldwide
>soil transmission parasite
-night soil: use fecal material for fertilization for crops

Question 2

Night soil

Answer 2

use fecal material for fertilization for crops

Question 3

Enterobius vermicularis

Answer 3

-Type of Worm: Nematode/ roundworm
-Mode of Transmission: ingest egg/ ova
-Infective Stage: egg
-Hosts: Human
-Disease: Enterobiasis
>pinworm; most common worm infection in U.S.

Question 4

Trichuris trichiura

Answer 4

-Type of worm: nematode/ roundworm
-Mode of Transmission: ingest egg/ ova
-Infective Stage: Egg
-Hosts: Human
-Disease: Trichuriasis
>whipworm; 700 million people infected worldwide
>soil transmission parasite

Question 5

Necator americanus

Answer 5

-Type of worm: nematode/ roundworm
-Mode of Transmission: Filariform larvae in soil, penetrates skin
-Infective stage: larvae
-Hosts: Human
-Disease: Hookworm Infection
>soil transmission parasite
>Second to Ascaris in infection rate

Question 6

Anisakis simplex

Answer 6

-Type of worm: nematode/ roundworm
-Mode of transmission: Eat uncooked infected fish
-Infective stage: L3 Larval stage
-Hosts: Definitive: marine mammal
Intermediate: human, fish, squid
-Disease: Anisakiasis
>larval worm attaches to the stomach, intestines and esophagus

Question 7

Trichinella spiralis

Answer 7

-Type of worm: nematode/ roundworm
-Mode of Transmission: Eat pork with encysted larvae, also in wild boar
-Infective stage: encysted larvae
-Hosts: Definitive: human
Intermediate: pig
-Disease: Trichinosis
>found in horses, bear, and wild boar

Question 8

Loa loa

Answer 8

-Type of worm: nematode/ roundworm
-Mode of transmission: bite of mango fly, aka- Chrysop fly
-Infective stage: Microfilariae
-Vector: Mango fly
-Hosts: Definitive: human
Intermediate: mango fly
-Disease: African eye worm

Question 9

Wuchereria bancrofti

Answer 9

-Type of worm: nematode/ roundowm
-Mode of transmission: mosquito bite
-Infective stage: Microfilariae
-Vector: mosquito
-Hosts: Definitive: human
Intermediate: mosquito
-Disease: Elephantiasis

Question 10

Onchocerca volvulus

Answer 10

-Type of worm: nematode/ roundworm
-Mode of transmission: bite of black fly
-Infective stage: microfilariae
-Vector: black fly
-Hosts: Definitive: human
Intermediate: black fly
-Disease: river blindness or onchocerciasis

Question 11

Dracunculus medinensis

Answer 11

-Type of worm: nematode/ roundworm
-Mode of transmission: drink water with cyclops (crustacean); water flea
-Infective stage: larvae
-Vector: cyclops
-Hosts: Definitive: human
Intermediate: cyclops
-Disease: Guinea worm
>has successfully been brought under control
>usually erupt out of a blister of a foot