arrangement in which one object of a pair is behind the other.
terminal segment on limb of Arthropoda.
the living, syncytial external layer on the body of Platyhelminthes and Acanthocephala.
long, thin, flexible structure capable of controlled movement.
organ that produces spermatozoa.
a type of metacercaria of Strigeiformes in which there is a thick, tight fitting cyst wall.
mid-body region of Arthropoda from which limbs emerge.
three-host tick:
a tick in which the larva, nymph, and adult take their blood meals on three different host individuals, requiring that they drop off a host and seek a new host after each blood meal.
the limb segment of Arthropoda from which the tarsus arises.
tick paralysis:
paralysis in the vertebrate host caused by toxins secreted during feeding by females of some ticks; occasionally fatal due to paralysis of respiratory system.
transmammary transmission:
transmission of a parasite from mother to offspring via milk.
transovarian transmission:
transmission of a parasite from a female to her eggs.
transplacental transmission:
transmission of a parasite from a mother's bloodstream to her fetus via the placenta.
trench fever:
a rickettsial disease transmitted by lice characterized by cycles of diminishing intensity of fever, headache and muscular pain.
tribocytic organ:
a glandular organ posterior to the acetabulum of Strigeoidea, that secretes proteolytic enzymes which digest host tissues.
a non-reproductive, feeding stage of Protozoa.
general term for main body region excluding appendages.
a form of Trypanosomatidae with the flagellum arising posterior to the nucleus, and possessing an undulating membrane.
a bacterial disease of northern regions transmitted by various Arthropoda, characterized by an ulcer at the site of inoculation that may develop into a septicemia.
two-host tick:
a tick in which the larva and nymph, take their blood meal on one host, then the nymph drops off and molts; the adult seeks a new host from which to take a blood meal.
a group of rickettsial diseases transmitted by fleas or lice, generally characterized by rash, fever, and involvement of kidneys and nervous system.