Digestive system Flashcards
System for maintenance of life
Digestive, Excretory, Circulatory, Respiratory system.
Systems for movement
Nervous and Muscular, Sensory organs
System for perpetuation
Reproductive
System for support and protection
Integumentary
System for Regulation of life processes
endocrine system
Regions of the alimentary canal
Foregut - stomodaeum
Midgut - Mesenteron
Hindgut - proctodaeum
Region of alimentary canal that is lined with spines or intima, hair or teeth
Foregut
muscle for fodd ingestion
pharynx
narrow tube leading to crop
esophagus
dilated
for food ingestion
crop
to grind particles of food
proventriculus
regulates passage of food from foregut to midgut
cardiac sphincter
parts of the foregut
pharynx
esophagus
crop
proventriculus
cardiac sphincter
parts of the midgut
gastric caeca
ventriculus
pyloric sphincter
boundary of foregut and midgut
gastric caeca
primary site for enzymatic digestion
lined with peritrophic membrane
ventriculus
a semipermeable membrane lining the midgut
have microvilli and made up of goblet cells
peritrophic membrane
increases the surface area for nutrient absorption
microvilli
boundary between the midgut and the hindgut
pyloric sphincter
peritrophic membrane is made up of
protein, chitin and mucopolysaccharide
are secretory and absorptive
midgut cells / goblet cells
cells involved in the production of ezymes and secretions
regenerative goblet cells
help pump out k from hemolymph
degenerative goblet cells
absorption takes place in the
midgut
diffusion form higher to lower concentration
passive absorption
energy is needed for the transport of nutrient from the lumen to the parts of the body
active absorption
midgut cells instead of lining the surface are ______
invaginated
subdivision in of the midgut where water absorption takes place
anterior midgut
subdivision of the midgut where concentration of food stuff takes place (acidic)
middle midgut
subdivision of the midgut where nutrient absorption takes place (alkaline digestion)
posterior midgut
demarkation between midgut and hindgut
pyloric sphincter
processes used by insects to obtain food
secure the food
gain access to or select the ingestible parts
transfer them into storage or processing part of the gut
structure involved in obtaining food
mouth parts
salivary system
food pumps
skeletal and muscular components
tube like proboscis for nectar feeding
siphoning
mouthparts for housefly
sponging type
mouthparts of bees
lapping
caddisflies
silknets
mosquitoes
cuticular filters
series of hydrolytic reactions that convert complex substances to simpler ones
digestion
proteins to aa
proteinase
carbs to sugars
carbohydrases
fats to glycerols
lipase
proteins that can catalyze reactions
enzymes
enzymes are produced in
salivary glands, gastric caeca and midgut cells
blood feeding species have
proteolytic enzymes
wood boring species have
cellulase
clear watery neutral fluid that is basically composed of AMYLASE AND INVERTASE (SUCRASE)
saliva
functions of saliva
moistening of food and mouthparts
sugar dissolving
depends in the food source
feeding habits
list of physiological adaptations
-feeding habits
-presence of microorganism in the gut
-cultivation of fungal gardens
-filter chamber
-stylet sheath or hardened saliva
-food storage
-extra intestinal digestion
-digestion of unusual food
-hematophagous insects
Present in cerambycid and tipulid for wood vegetable and bacteria
bacterial fermentation chamber
species that cultivates fungal gardens
ants, beetles, wood wasps and termites
uses insect feces and dead bodies for fungal gardens
primitive ant genera
use plant, leaf adn lfowers ofr fungal gardens
intermediate genera
uses fresh leaves and flower for fungal gardens
complex genera
fungus in the gardens produce _________ that consist of sterile hyphae with swollen terminal cells
bromatia (staphylae)
where does the virgin q ant held the pellet
infrabuccal pouch
aims to remove the fluid in the food as not to dilute the hemolymph and thus easily concentrate food for digestion
filter chamber
internal stores in the fat bodies
food storage
digests mucopolysaccharide in the connective tissue
hyaluronidase
insects that practice extra intestinal digestion
carnivorous heteropterans
plant sucking homopterans
silkworm
blowflies
saliva have pectinase and galacturonidase
plant sucking homopterans
enzyme that can digest middle lamella of plant cell wall
pectinase
enzyme in the midgut of silkworm that attack the silk
protease
blood suckers have ________ that is identified as __________
anticoagulants, plasminogen activator
processing of materials from the environment by organism, also refers to the type and quality of food.
nutrition
refers to the information on chemical composition of the different components of the food
nature
Types of insect food
food containing substances
food containing important chemical components
necessary to fullfil the nutritional requirements of insects
food containing substances
type of food to induce or attract feeding
food containing important chemical components
secondary plants substances
non-nutritional
necessary substances that the insect does not have the capacity to synthesize
nutritional (essential)
nutrients that can be manufactured by insects
nutrintional (non-essential)
3 basic rules of insect nutrition
rules of sameness
principle of nutrient proportionality
principle of cooperating supplements
refers to the suitable balance of different nutrients needed for normal development
principle of nutrient proportionality
refers to the substitute sources of nutrients
principle of cooperating supplements
general nutrient requirements of insects
proteins
carbohydrates
fats
vitamins
phospholipids
minerals
nucleic acid
sterols
needed for cell and enzyme production
proteins (amino acids)
needed to build tissues and enzymes
aa
excessive amount of protein in drosophila produce
melanotic tumors
deficiency affects growth development and reproduction
proteins
results of low protein in apis mellifera
brittle integument and general paralysis
effect of low protein in european corn borer
delayed molting or supernumerary molts
effect of low protein in drosophila
prevention of yolk synthesis
main energy source
carbhydrates
monomers of carbs
glucose and fructose
dimers of carbs
sucrose and trehalose
tri, tetra and penta mers of carbs
raffinose
polymers of carb
starch
glycogen
cellulose
needed for hormone production
fats and oils
building blocks for hormoneproduction
sterols
essential in metabolism, as constituents of enzyme system
vitamins
vitamins that acts as cofactors for enzymatic reactions
water soluble b vitamins (1,6,12)
b vitamins involved in carbohydrate metabolism
thiamine and riboflavin
b vitamins that acts as coenzyme in tryptophan metabolism
pyridoxine
vitamins responsible for the reproduction of predators and parasitoids
vitamin a and e
vitamin that accelerate growth for males
vitamin a
essential components in the synthesis of lipids inositol and choline
phospholipids
minerals for insects
na, k, mg, p04, cl
especial requirement for dipterans
nucleic acids
fulfills the sterols req of insects
important for cytoplasmic membrane
starting material for synthesis of ECDYSONE
cholesterols
food is used for
energy production
growth and development
reproduction
applied aspect of insect nutrition
insect control and mass production of insects
insects feeding on plants
phytophagous
insects feeding on other animals
zoophagous
insect feeding on non-living organic matter
saprophagous
insects feeding on cross categories
omnivorous