SYM: death, thin and weak… humans get ulcer at site of entry..
fever and chills. Indirect);Yersiniosis (birds, mammals, humans..
. stressed animals. Cannot be distinguished from Tularemia… from contaminated food/water);Salmonellosis (small birds stressed conditions.
depressed, ot flying, exposed. direct with feces);Avian Cholera (chickens, turkeys, ducks, geese, raptors. direct. green diharrea);Brucellosis (infects humans. bison, elk, caribou, and many domestic.);Tuberculosis (mammalian) (most mammals, direct, cough up blood, fatigue, etc)
-Aspergillosis (common in birds and ducks, fungus ball in lungs, no symptoms to coughing of blood);-Ringworm (any mammal, similar to mange.
.. loss of hair, dry grey rusty skin.
Botulism (mainly ducks, some medium sized birds. paralysis.. interferes with transmission of impulses from nerves to skeletal muscles.
transmission is environmental. produced by bacteria);Lead Poisoning (ingestion of lead shot pellets… waterfowl for grit..
loss of appetite, weakness, weight loss, green diarrhea, death)
Sarcoptic MangeTick Infestation
Definitions of Disease, Parasite, Bacteria, Virus
Disease:a disorder or structure/function not directly related to a physical injury;Parasite:an organism that lives in or on a host at the host’s expense Bacteria:a member of a large group of unicellular microorganisms that have cell walls but lack organelles and organized nucleus Virus:an infective agent composed of genetic material and a protein coat
Define: Fungus, toxin, proximate cause, ultimate cause
Fungus: a group of spore producing organisms that feed on organic matter. Lack chlorophyll. Toxin: a poison or venom of plant or animal origin Proximate Cause:closest to, or immediately responsible for cause Ultimate Cause: the “real” reason
enzootic vs epizootic
enzootic is constantly present in population at low levels, therfore low mortalityepizootic occurs at greater than normal rates (outbreaks)… higher mortality
Def of occurrence/prevalence/incidence/epidemiology/susceptibility/virulence/transmission/reservoir/vector
occurrence: pattern of disease in time and spaceprevalence: proportion infected at given time/placeincidence: # of new cases per unit time at a placeepidemiology: study of disease in a populationsusceptibility: genetic or decreased immunityvirulence: speed and severity of symptoms once infectedtransmission: spread from infectious to susceptiblereservoir: hosts that sustain agent of diseasevector: organism that transfers a disease
can be transferred from animals to humans-70% of human diseases have a wildlife component
-deer and elk-concern for farmed cervids-group known as TSE-fatal-similar to mad cow disease-caused by modified protein (prion)-accumulate and cause tiny holes in brain (sponge)-transmission unclear (animal to animal, also maternal, contaminated feed/water) SIGNS-excessive salivation-lethargy-poor coordination-trembling-‘waste’ away-drooping ears and head *Is a federally reportable disease
Wildlife Disease Classification
MACROPARASITES(tape worms, extoparasites)Infectious (live on or in animal)-Contagious (sarcoptic mange, trichinella)-Non-Contagious (intermediate hosts) MICROPARASITES (viruses, bacteria, fungal)InfectiousContagious: rabies, avian choleraNon-Contagious: Aspergillosis Non-Infectious (disease lives in external environment)-toxins/poisons
Lungworm Cycle in BHS
Cause: Protostrongylus stilesi/Pasteurella spp.
Adult Lungworm in Lungs Eggs hatch in lungs and young larvae move to ar passages Larvae are coughed up and swallowed Larvae pass through digestive tract and expelled in feces Snals (intermediate host) Infected snals ingested during sheep feeding Circulatory or lymphatic system Back to top
Order of deer stomach
RumenReticulumOmasumAbomasum (true stomach.. HCl)
Body Condition Indices
Femur/Jaw Marrow-marrow fat reserves are some of the last reerves used by animals. Cream coloured marow would indicate high levels of fitness, while red jelly like would indicate lowl evels of fitness. Kidney/Fat weight ratioKFI= (weight fat/weight kidney) * 100 Back fat Depth Mesenteric Fat
Captured animals are subjected to stress than can have adverse effects on their physilogical condition. Death can sometimes occurMuscles may be damaged if too much lactic acid builds up. Do this: 1)Animals should be captured and handled in ways to minimize stress2)Animals shouls not be confined to tight spaces or bound3)Blindfolds should be used to calm animals4)Keep animals cool5)Avoid making excesive noise6)move animals in corrals slowly and gently7)Work quickly, thereby limiting handling time
Snap trapsUsed to capture small mammals in situations where live-capture is not required (pop index, species composition, experimental removals). Baited /w peanut butter or oatmeal.
Conibear traps (furbearers … weasels, marten, fishers… set in wooden cubby with bait at back of box)
Cage and box traps
Can be used to capture small to medium size mammals and birds.
Commercially-made traps are available for mammals of mouse, squirrel, or racoon size. Baited cage traps are used to capture ducks and other birds. Large cage traps known as Clover traps are successfully used to capture deer, sheep, and goats. Culvert traps (large cage on wheels towed by vehicle) are used to capture bears, particularly problem bears with are acclimated to human-made structures. National Live Trap: one end opensHavahart Trap: two ends open..
can see through other sideBarrel/culver trap cylinder with sliding guillotine door
Essentially a large cage trap for capturing several large ungulates at once (elk, sheep, pronghorn). The gate is usualy designed to be closed by a concealed observer from a distance (electrical or radio signal). Once the animals learn to make regular use of the bait in the corral, a one-way gate can be installed which allows the animals to enter but not leave.
for bears, the leg-holding Aldrich snare is often used. Leg snares have been used to live capture lynx and coyotes. Neck snares with closure stoppers can be used to live capture mammals.
A net suspended over a bait station on poles.
The net is dropped on the animals by a remote control which releases electromagnetic couplings or detonates blating-caps to sever the ropes. Drop nets are primarily used for mountain sheep, but also work for deer.
Used to carry and inject drugs into animals.Syringe to blow and dart guns. Cap-Chur Syringes: 2.5″ = 3cc4″ = 7cc7/5″ = 15ccc Syringe: most basic delivery system.
Requires close proximity. Do not inject into major blood vessel. Jab Stick: syrince attached to a pole aand used to inject an animal caught in a trap. Blow Guns: little bruising. Dart self injects.
Close range. (Blow guns are restricted weapons in can) Bow and Arrow: similar to blow guns. Increased distance. Tranquilliser gun: Propels a dart containing the drug (propelled by powder charge, compresed air, or CO2). Injected by second powder charge.
Animals must be within 75m. Helicopters commonly used. Can serioulsy injure or kill an animal if dart does not hit major muscle mass. Rarely used on animals smaller than deer. Baits: drug treated baits are used to capture waterfowl and other birds.
No control over dosage rate.
Ketamine and Rompun-Central nervous system anaesthetic and tranquilizer which are mixed together to immobilize wild mammals.-Reasonably cheap and easy to obtain, safe to use-Induction time is 5 mins but recover is long (2-4 hours) Etorphine HydrochlorideCNS anaesthetic. 5 min induction time, and antidote is used to reverse effects.
Underdose can result in a prolonged state of excitation and death due to stress (myopathy).Extremely dangerous to humans (prick of needle cause death) TelazolA new, not widely tested but seemingly great drug.1)more predictable in effects..
induction and recovery are not variable2)Shorter induction time which reduces stress3)Telazol has a very wide safety margin for dosage. A mild overdose has little effect on period of anaesthesia.4)Very seldom causes congvulsions5)Does not affect thermoregulatory ability of animal6)Demonstrated to have an extremely low mortality rate7)5 times more potent that Ketamine/Rompus.
Large animals done with single dart. Has been widely used on wolves and lynx
1)Movements (season migration or daily)2)Habitat Use3)Home range or territory size4)Activity patterns5)Social behaviour (degree of association between marked individuals)6)Mortality rate
Must try to have it less than 10% of animal’s body weight1)attachment (can be collars, harnesses for bids, implants for small neck/hear, eartags for bear cups and ungulates, adhesive for birds/whales/etc, stomach for fish)2)potting (hard resin that secures components together)3)electrical ciruitry (emits signal)4)antenna (amplifies strength of signal)5)battery (powers transmitter);Special features:1)mortality sensor2)activity collar3)heartbeat4)Drug injecting by remote control
Components:1)Receiver (black box that detect signal)2)Coaxial cable (connects receiver to antenna)3)Headphones (connected to receiver an helps to eliminate external noise)4)Antenna (detect signal strength and direction;Strongest signal is peak while weakest is null
Receiver Placement and Options
1)Ground Mobile (hand held or truck mounted. Uses triangulation method;2)Ground towers (above trees… reduces signal bounce);3)Fixed wing aircraft (directional antennae mounted on each strut point to either side. Can switch from wing to wing.
High cost and low precision.;4)Helicopter – better but very high cost;4)Satellite. Only for large, far-ranging species (polar bears, whales) very very expensive, accuracy to one km.
;;OPTIONS1)scanner- scans through pre-programmed frequencies and user stops when signal is heard2)Signal meter – electronically meters the direction of strongest signal
Gain: receivers scanning powerVolume: used to detect signal width range (high vol is wide range)
Homing-Tracker moves in the direction of the signals;Triangulation-Where two signal directions cross, indicates the location of the transmitter.
Aldrich Leg Snare
Thickness of galvanized steel depends on black bear or griz-dig depression, avoid capturing on toes or up leg… want to get on wrist-way more dangerous with grizzlies
Stephenson Box Trap…
big heavy baited wooden trapClover: lighter and more portable version;Net gunning (helicopter)… quick.. don’t need to use drugs “alpine rodeo”