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42 Cards in this Set
- Front
- Back
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what phylum do insects fall under
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arthropoda
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What does the name mean (arthropoda) ?
what are the five things these animals generally have? |
jointed foot
1. bilateral (left/right symmetry) 2. segmented body 3. hard exoskeleton 4. jointed legs 5. many pairs of limbs |
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hardness of the exoskeleton is a function of what two things?
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proteins and/or minerals + the extremely compound chitin
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what is chitin
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a carbohydrate
a polymer of N-ACETYLGLUCOSAMINE |
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describe entomology
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is the science concerned with insects
*and often other terrestrial arthropods because there is no one else who cares |
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you know its an insect if :
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-body divided into 3 major TAGMATA
- 3 pairs of walking legs -adults have wings |
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insects are unique in ..
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wings
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are spiders insects
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NO
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once exoskeleton has hardened..
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insects don't grow anymore
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what characterizes bugs?
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their long beck
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flowers fix____;
_____eat _____; and ____eat _____. |
flower fix carbon
caterpillars eat plants and ants eat caterpillars |
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insects = __%
arthropods = __% invertebrates = __% vertebrates = __% animals =__% |
52 insects
arthropods 53 72 invertebrates vertebrates 1% 73 animals |
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"an inordinate fondness for beetles"
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British biologist J.B.S. Haldane
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Probably more that ___ of the worlds species are insects and more that ___ are arthropods
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50
60 |
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some groups have been neglected, and are probably a larger proportion of biodiversity than current numbers indicate eg______
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arachnids
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in particular the ___are little known, because they are so small
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the mites
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there are approx ____insects alive today
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~1x10^19
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roughly how many insects have been formally described and named ?
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10^6
*the number is uncertain because there is no central database and because some species have accidentally been give MORE THAN ONE name * it is still very east to find an undescribed species, particularly in tropical regions and/or among very small specimens |
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what is the name of the insect your instructor named?
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chrysomya greenbergi
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you don't need to explore an exotic location if the speices is __
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microscopic
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what is one of the reasons why there are so many insects?
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small size allow greater niche diversity
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____dominate every terrestrial tropic level above plants
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insects
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herbivores
what are the examples of major players? |
caterpillars and aphids
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a particular kind of herbivore is a pollenator example :
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many bees and moths
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carnivores
example : |
mosquitoes and ants
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name a particular kind of carnivore
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parasitoid
these don't have common names |
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what are three examples of decomposers
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carrion maggots
dung beetles termites |
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pests mainly do four things>>>
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eat valuable plants
cause medical/veterinary problems eat/infest stored products attack structures or natural fibers |
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insects may eat ____of crops grown for human consumption
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20%
example cabbage white butterfly |
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crop damage is mainly a direct result of ____, but it can also be a result of an _____.
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insect feeding
insect borne disease |
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why is there a panic about florida citrus industry
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in part because of greening disease transmitted by an insect
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in the case of greening disease the pathogen has been there for a long time,but the insect ____is new to the area
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the vector
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insects that attack humans and domestic animals also cause direct damage and spread disease, but the biggest problem is ___
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disease
*these are examples of the most dangerous vector taxa. a tick |
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a tick is actually an ___
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arachnid
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malaria, transmitted by ____ mosquitoes, kills an average of 1 person / 12 seconds. perhaps 500 million are infected
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ANOPHELES
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How has malaria influenced human evolution?
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sickled red blood cell
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3 things we should be grateful for beneficial insects
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ecosystems would collapse w.out them
pollination of fruits and vegetables miscellaneous: including aesthetic appeal, food value, and medicinal value |
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mosquitoes are an important food for ____
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wildlife
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gullan and cranston use termites to illustrate the concept of _____. like ants they can be a huge component of any terrestrial ecosystem
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keystone species
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an example of a major domesticated insect
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honeybee apis mellifera
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what is the 2nd most important domesticated insect
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silkworm bombyx mori
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can silk moths survive in the wild
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no silk moths are completely domestic they cannot survive in the wild
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