1 - Superfamily Ascaridoidea (Order Ascaridida)

reproductive characteristics of nematodes (roundworms)

dioecious

female roundworms are able to do this phenomenon where it can fertilize its own eggs even without a male

parthenogenesis

presence of this feature in roundworms differentiate it from trematodes and cestodes, and because of this, what is the description of their body

body cavity

cylindrical, elongate, and unsegmented

T or F: the alae, papillae, vesicle, cordons, or leaf crowns of roundworms increases its virulence

FALSE: they are only cuticles or extended parts of it

what is present on the cephalic end of Ascaris suis

3 prominent lips

ID species: ID sex

Ascaris

Left = male; Right = female

differentiate male and female roundworms in terms of size and posterior end

Female - larger and with a STRAIGHT posterior end

Male - smaller and with coiled or curved posterior end if non-bursate, can have copulatory bursa (bursate)

families belonging to superfamily ascaridoidea under order ascaridida

Families:

Ascarididae, Toxocaridae, Anisakidae

how is family ascarididae transmitted

soil transmitted helminths via direct LC

DH and organ loc of Ascaris sius

small intestine - pigs

Ascaris suis is morphologically similar to what species

Ascaris lumbricoides

Ascaris suis is most prevalent in what stage of pigs or age of animals

fatteners (3-6 months old)

acquired immunity increases with age

infective stage of Ascaris suis

infective egg with L3 larva