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Section 4
Food Habits
83
Nutrition
Undergraduate 3
04/11/2015

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Cards

Term
What do polyphages eat?
Definition
a wide variety of different foods/species

(not necessarily omnivores)
Term
What do monophages eat?
Definition
only one kind of food or food species
Term
What do planktonivores eat? Spongivores? Crustacivores?
Definition
plankton
sponges
crustaceans
Term
What is the term for animals who eat ants and termites?
Definition
myrmecophages
Term
What is the term for animals who eat mussels, clams, oysters etc?
Definition
molluscivores
Term
What is the term for animals who eat blood?
Definition
sanquivores
Term
True or False

Piscivores often undergo seasonal changes in fat composition
Definition
true
Term
What plant matter do grazers typically eat?
Definition
non-woody plants at ground level

grass, some forbs
Term
What plant matter do browsers typically eat?
Definition
material from woody plants above ground level

leaves, buds, shoots, twigs
Term
Are goats & caribou browsers or grazers?
Definition
intermediate, they do some of both
Term
Concentrate selectors are equivalent to (browsers/grazers)
Definition
browsers
Term
Roughage or bulk feeders are equivalent to (browsers/grazers)
Definition
grazers
Term
The reticulorumen of roughage/grass feeders is ____ larger than that of concentrate selectors
Definition
50-60%
Term
What type of plant material do concentrate selectors eat?
Definition
easily digestible, highly nutritious, low fibre
Term
True or False

Concentrate selectors choose high fiber plant material
Definition
false
Term
What is the term for herbivores who eat leaves?
Definition
folivores
Term
What is the term for herbivores who eat fungi?
Definition
mycophages
Term
What is the term for herbivores who eat lichen?
Definition
lichenophages
Term
True or False

Succulent fruit is often low in calcium
Definition
true
Term
Why do frugivores often feed insects to their young?
Definition
the succulent fruit they eat is low in calcium, so they obtain Ca from insects to support skeletal growth
Term
Why are large frugivores rare in northern climates?
Definition
fruit is often seasonal, cannot find adequate amounts to support a large animal in the off-season
Term
True or False

The Eastern gray squirrel is a frugivore
Definition
true
Term
What is the term for herbivores who eat seeds & grain?
Definition
granivores
Term
What nutrient(s) is/are low in a nectarivore's diet?
Definition
protein & calcium
Term
A frugivore's diet is typically (low/high) in Vit C
Definition
high
Term
What is the term for herbivores who eat pollen?
Definition
pollenophages
Term
What nutrient is pollen especially rich in?
Definition
protein
Term
Do obligate nectarivores eat insects?
Definition
no
Term
What is the term for herbivores who eat gums & exudates?
Definition
gumivores
Term
What species discussed eats only nectar & pollen?
Definition
honey possum
Term
When do diurnal animals eat? What are some advantages/disadvantages?
Definition
during the day

-can see food easily
-can be seen by predators
Term
When do nocturnal animals eat? What are some advantages/disadvantages?
Definition
during the night

-concealed from predators, cooler in desert
-cannot see food easily
Term
What is the term for animals who eat at dawn & dusk?
Definition
crepuscular
Term
Black animals absorb ___% of light while white animals absorb ___%
Definition
90
50
Term
Give 2 examples of animals from the order monotremata who eat only animal food
Definition
echidna
platypus
Term
Give an example of animals from the order tubulidentata who eat only animal food
Definition
aardvark
Term
Give an example of animals from the order pholidota who eat only animal food
Definition
pangolins
Term
Give an example of animals from the order macroscelidea who eat only animal food
Definition
elephant shrews
Term
Which mammalian orders eat only animal food? (4)
Definition
Monotremata
Tubulidentata
Pholidota
Macroscelidea
Term
Which mammalian orders eat only plant material? (5)
Definition
Lagomorpha
Perissodactyla
Proboscidea
Sirenia
Hyracoidea
Term
Give an example animal belonging to each of the following orders:

Lagomorpha
Perissodactyla
Proboscidea
Sirenia
Hyracoidea
Definition
Lagomorpha - rabbits, hares
Perissodactyla - horses, rhinos, tapirs
Proboscidea - elephants
Sirenia - manatees, dugongs
Hyracoidea - hyraxes
Term
True or False

Red foxes & grey foxes are obligate carnivores
Definition
False

They eat a substantial amount of plant material
Term
What nutrient requirements force felidae to be obligate carnivores?
Definition
Vitamin A, taurine, arachidonic acid
Term
What type of 'eater' are members of the Solenodontidae family?
Definition
ombivores
Term
What type of 'eater' are members of the Tenrecidae family?
Definition
carnivores
Term
What type of 'eater' are members of the Chrysochloridae family?
Definition
carnivores
Term
True or False

All animals in the order carnivora are carnivores
Definition
False
Term
Some species of the order insectivora are obligate insectivores
Definition
False

None of the insectivora members eat strictly insects
Term
Which colour of flowers typically have readily accessible nectar?
Definition
white & yellow flowers
Term
What are secondary consumers?
Definition
omnivores & carnovires who eat herbivores
Term
What are tertiary consumers?
Definition
omnivores & carnivores who eat carnivores
Term
Which is the only mammal with a poisonous bite?
Definition
the slow loris
Term
What are some methods employed by herbivores to avoid predators?
Definition
-large groups are distracting
-camouflage / burrowing
-crepuscular & nocturnal feeding
-false-toxin coloration to deter predators
Term
What are the trophic feeding levels?
Definition
Producers
Primary Consumers
Secondary Consumes
Tertiary Consumers
Term
Are fungi producers?
Definition
no
Term
What chemical compound is essential for the autotrophic ability if green plants?
Definition
chlorophyll
Term
What percentage of food energy is stored in animal tissues?
Definition
5-20%
Term
What are the methods of determining food habits of wild animals?
Definition
1. Direct observation
2. Utilization techniques (enclosure/exclosure/cafeteria)
3. Digesta sampling (in-vivo or post-mortem)
4. Faecal analysis
5. Isotope studies
6. Adipose tissue composition
Term
Which method is least effective for studying food habits of aquatic species?

1. Direct observation
2. Utilization techniques (enclosure/exclosure/cafeteria)
3. Digesta sampling (in-vivo or post-mortem)
4. Faecal analysis
5. Isotope studies
6. Adipose tissue composition
Definition
faecal analysis
Term
Which would be least effective for studying food habits of crepuscular or nocturnal species?
Definition
direct observation
Term
How do you study food habits based on utilization in an enclosure?
Definition
1. survey vegetation in enclosure
2. let animals in for a period of time
4. survey vegetation after they have left
Term
What are the advantages/disadvantages of studying utilization in an enclosure?
Definition
Pro: can estimate which parts of the plant are being eaten, which species

Con: other species e.g. slugs, rabbits etc may also have eaten the plants
Term
What are advantages/disadvantages to studying utilization through the cafeteria method?
Definition
Pro: can see which foods are preferred out of what's offered, which parts are eaten

Con: not truly representative of what the animal might eat in the wild

animals may choose differently if the plant was growing, not already cut
Term
Which species digest material better, and why?

Owls vs hawks
Definition
Hawks because they tear pieces from their food rather than swallowing the prey whole
Term
What are the pros/cons of studying food habits through pellets?
Definition
Pro: more accurate than utilization techniques, non-invasive

Con: -food components poorly represented (only the non-digestible parts)
-some food components might be missing (egested exoskeletons are difficult to find)
Term
What are the cons of sampling digesta post-mortem from roadkill, hunters etc?
Definition
-don't know time of last meal or degree of digestion
-some food components are digested far more easily than others, poorly represented
Term
Which food components are likely to be under-represented when analyzing digesta post-mortem or through fecal analysis?
Definition
soft-bodied inverts & fungi
Term
What are some disadvantages of studying food habits through fecal analysis?
Definition
-unclear which species or gender produce the feces
-shape/size/consistency will vary with diet
-pH reflects lower end of the GIT
-parasites may be species specific
Term
Which carbon isotope is radioactive?
Definition
14 C
Term
Which carbon isotope is 1% stable?
Definition
13 C
Term
Isotopes of an element have different numbers of ____ in the atomic nucleus
Definition
neutrons
Term
Which responds more quickly to changes in diet, bones, tendons, fat or collagen? Why?
Definition
fat

higher turnover rate
Term
True or False

The fat tissue of ruminants & foregut fermenters reflects the fat in their diet
Definition
false
Term
True or False

Fats in the membranes of cells are indicative of the fat content of the diet
Definition
False
Term
How do the microbes in the rumen & foregut alter FA composition?
Definition
hydrogenate / saturate them
destroy MUFA & PUFA

-produce FAs with odd numbers of C
-produce branched chain FAs
Term
Is the hippo a foregut fermenter or a ruminant?
Definition
foregut fermenter
Term
Are fat depots surrounding the body core typically saturated or unsaturated?
Definition
saturated
Term
Will hibernating animals have more unsaturated fats or saturate fats in the their adipose tissue?
Definition
unsaturated
Term
In birds, the function of the teeth is replaced by the ...
Definition
gizzard
Term
In birds, the function of the stomach is replaced by the ...
Definition
crop (storage)
proventriculus (acid digestion)
gizzard (trituration)
Term
Give an example of an avian herbivore
Definition
emu, rhea, ostrich
Term
Give an example of a facultative carnivore, obligate carnivore, omnifore, frugivore and herbivore from the order carnivora
Definition
Fac Carnivore: wolf
Obl Carnivore: polar bear
Omnivore: grizzly bear
Frugivore: black bear
Herbivore: panda
Term
Give an example of am omnivore & carnivore from the order insectivora
Definition
Omnivore: solenodon, hedgehogs
Carnivore: tenrecs, golden mole
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