-
BEETLES
Human health problems caused by beetles include
- skin, eye, ear, and nose irritations; respiratory allergies; and
- minor gastrointestinal discomfort.
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BEETLES
The greatest human discomfort associated with beetles
is caused by vesicating species that secrete irritating chemicals when the insects are
handled or accidentally contact human skin or sense organs.
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BEETLES
Blister beetles, false blister beetles, some rove beetles, and some
darkling beetles have these irritants in their
irritants in their secretions, hemolymph, or body parts.
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BEETLES
Larvae of larder beetles are covered with
hairs that can act as skin or respiratory allergens.
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BEETLES
Invasion of body tissues by beetle larvae is called C_
canthariasis,
-
BEETLES
whereas invasion of such tissues by adult beetles is called
s_
scarabiasis.
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BEETLES
Most clinical cases involve enteric canthariasis that results from the
ingestion of _
- ingestion of foodstuffs infested with beetles or the accidental
- ingestion of infested materials by children.
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BEETLES
Dermestid larvae, such as those of Trogoderma glabrum and
T. ornatum, have been associated with enteric canthariasis
in infants who showed signs of extreme
digestive discomfort, which in one case was the result of ulcerative colitis.
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BEETLES
Larvae were recovered from the
stools of these patients and from the dry cereal they ingested.
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BEETLES
Small beetles in various families have been known to fly or crawl into
fly or crawl into human eyes and ears.
-
BEETLES
BLANK AND BLANK are most often affected by inhalational allergies, because most of the
beetle species involved occur in large numbers in stored products.
Agricultural and research workers
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BEETLES
Dermestid beetles (Trogoderma angustum), tenebrionids (Tenebrio molitor and Tribolium spp.), and
grain weevils (Sitophilus granarius) have been incriminated in many cases of
respiratory distress, such as asthma.
-
BEETLES
Beetles serve as intermediate hosts for more than 50
- parasitic worms, including tapeworms (Cestoda), flukes
- (Trematoda), roundworms (Nematoda), and thorny-headed
- worms (Acanthocephala) (Hall, 1929; Cheng, 1973).
-
BEETLES
Only a few species, such as the rodent tapeworms
Hymenolepis nana and H. diminuta, and the Macracanthorhynchus
species of acanthocephalan parasites, occasionally infest BLANK
children.
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BEETLES
Many beetles, such as scarabs, silphids, and dermestids,
that feed on
dung and carrion
-
BEETLES
have the potential to be mechanical vectors of pathogens, such as the bacilli that
can cause BLANK AND BLANK
salmonellosis and anthrax.
-
DERMESTID BEETLES
Larvae of larder beetles, or pantry beetles (Fig. 9.8), are
covered with BLANK AND BLANK that may cause
allergic reactions in the form of pruritic, papulovesicular skin lesions.
barbed and spearlike setae
-
DERMESTID BEETLES
Dermestid larvae often are found living in INTERIOR AREAS
- household furnishings, such as carpets, rugs, and upholstery or stored clothing of individuals suffering from these
- reactions.
-
DERMESTID BEETLES
Dermestid larvae and adults are known to have crawled into
crawled into human ears, causing itching and pain.
-
BLISTER BEETLES
contain the terpene cantharidin, which can cause
skin irritations.
-
BLISTER BEETLES
People usually develop
blisters within 24 h of contacting the secretions of these beetles or the body fluids from crushed
-
BLISTER BEETLES
Cantharidin is present in the hemolymph and in the clear, yellow secretion that is exuded at the INSECT BODY PARTS
joints of the legs of these beetles by reflex bleeding.
-
BLISTER BEETLES
ANIMALS are repelled by the fluid.
Reptiles and some predaceous insects
-
BLISTER BEETLES
Although cantharidin is irritating to humans, the chemical acts as a
meloid courtship stimulant that is secreted by male accessory glands and passed to the female during copulation.
-
BLISTER BEETLES
BLANK - being the only source of cantharidin, generally have the highest concentrations of the chemical
males
-
BLISTER BEETLES
Cantharidin is poisonous to humans and other animals when ingested and may cause BLANK AND BLANK
ingested and may cause kidney damage and death.
-
BLISTER BEETLES
Blister beetles are found often on
flowers or foliage where the beetles feed on pollen and other plant tissues and where they are near the nests of solitary bees that serve as hosts for the larvae of many species.
-
BLISTER BEETLES
Most people who develop blister beetle lesions are
agricultural workers or soldiers on maneuvers in areas where the beetles are common.
-
BLISTER BEETLES
Retention of cantharidin ANIMAL AND ANIMAL
that prey on meloids may lead to human poisoning when
these predators are used as human food.
FROGS AND BIRDS
-
BLISTER BEETLES
Humans have also developed signs of cantharidin poisoning following the ingestion of cooked
wild geese (Eisner et al., 1990).
-
FALSE BLISTER BEETLES
False blister beetles in the genera Oxycopis (Fig. 9.4),Oxacis, and Alloxacis are known to cause
vesicular or bullous dermatitis
-
FALSE BLISTER BEETLES
are attracted to
flowers where they feed on pollen.
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