100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
5.0 Aquatic & Mosquito Exam Questions and Answers 100% SOLVED $10.99   Add to cart

Exam (elaborations)

5.0 Aquatic & Mosquito Exam Questions and Answers 100% SOLVED

 18 views  0 purchase
  • Course
  • 5.0 Aquatic & Mosquito
  • Institution
  • 5.0 Aquatic & Mosquito

List the roles plants play in a healthy aquatic ecosystem. - ANSWER--producing oxygen -preventing shoreline erosion -lessening excess nutrients during growing season -stabilizing lake bottom -providing food and habitat for fish, waterfowl, and other aquatic animals List ways that excessive ...

[Show more]

Preview 4 out of 45  pages

  • May 29, 2024
  • 45
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • 5.0 Aquatic & Mosquito
  • 5.0 Aquatic & Mosquito
avatar-seller
IMORA
5.0 Aquatic & Mosquito Exam Questions
and Answers 100% SOLVED

List the roles plants play in a healthy aquatic ecosystem. - ANSWER--producing oxygen

-preventing shoreline erosion

-lessening excess nutrients during growing season

-stabilizing lake bottom

-providing food and habitat for fish, waterfowl, and other aquatic animals



List ways that excessive plant growth can adversely affect the ecology and uses of a
water body. - ANSWER--harm ecology of aquatic ecosystem

-curtail or prevent recreational water uses (e.g. fishing, boating, swimming)

-impart tastes or odors to drinking water

-hamper water treatment operations

-adversely affect aesthetics, resort trade, and waterfront property values

-produce toxins that harm animals drinking the water



Describe the general growth habits of, means of dispersal and potential problems
caused by: Emergent aquatic plants - ANSWER--*growth habits*: rooted in shallow
water, most growth above water

-*means of dispersal*: underground root systems

-*potential problems*: very dense and may exclude recreational pursuits like boating,
fishing, and swimming. Purple loosestrife is an example of a problem species.



Describe the general growth habits of, means of dispersal and potential problems
caused by: Submergent aquatic plants (both pondweeds and plants with whorled
leaves) - ANSWER--*growth habits*: grow mostly under water surface, pondweeds
sometimes have floating leaves in addition to their submerged leaves; whorled-leaf
plants grow underwater with whorled leaf attachments

-*means of dispersal*: pondweeds have extensive root systems, runners, and can also
reproduce from seeds; plants with whorled leaves can disperse when uprooted by
breaking free and getting moved by the wind

,-*potential problems*: most pondweeds not nuisance except for curlyleaf pondweed and
sometimes sago pondweed; whorled leaf plants can uproot and break free easily and
drift with wind to clutter shoreline; Eurasian watermilfoil is an aggressive non-native that
can affect habitat and restrict recreation. Raking is required to remove these clutters.



Describe the general growth habits of, means of dispersal and potential problems
caused by: Free-floating and rooted floating-leaved aquatic plants - ANSWER--*growth
habits*: occur on water surface and can be free-floating or rooted with large floating
leaves

-*means of dispersal*: free floating plants are easily windblown. rooted ones not so
much

-*potential problems*: free-floating plants accumulate on shorelines and are difficult to
control in large waterbodies; rooted plants are rarely a nuisance.



Describe the general growth habits of, means of dispersal and potential problems
caused by: Free-floating, filamentous, and "rooted" algae - ANSWER--*growth habits*:
found free-floating (planktonic) or attached to submerged surfaces (filamentous or
"rooted").

-*means of dispersal*: multiply rapidly in warm weather;

-*potential problems*: free-floating algae responsible for many nuisance algal blooms
(release toxin, low DO, blue-green algae); removing rooted algae can allow worse
species to come in so don't mess with them.



List the advantages and disadvantages of chemical control of aquatic plants and algae -
ANSWER-*Advantages*:

-offer longer-lasting control than some mechanical methods

-less physical labor

-ultimately cost less

-important tool for specific nuisance plants/algae such as Eurasian watermilfoil and
purple loosestrife

*Disadvantages*:

-restrictions on water use

-oxygen depletion and fish kills

-sudden nutrient release into water can lead to other plant or algae problems

,-risk to people and nontarget organisms



Describe the beneficial roles of Wisconsin's fish populations. - ANSWER--maintain
balanced communities by feeding on aquatic plants, insects, and other fish & provide a
food source for natural predators

-fishing for food/sport is popular in WI and ddepends on healthy populations

-fish farms and hatcheries raise fish for food, feed, fertilizer, bait, and to release



List 5 types of situations in which fish control may be warranted - ANSWER--eliminating
undesirable or competing fish from fish rearing ponds

-removing exotic and other undesirable species from a waterbody

-thinning stunted fish to bring a population into balance

-eliminating fish from a hatchery water supply to prevent a potential reservoir of
disease-causing organisms

-treating fish spawning sites to prevent overpopulation of an individual species



Explain why post-treatment management can be important in the long-term success of a
pesticide treatment project. - ANSWER--because when fish populations are lowered,
density-dependent population growth allows the population to rebound if not managed
post-treatment



Know the Law: Who do you need to get approval from to conduct any chemical
treatment for fish control? - ANSWER-WI DNR Aquatic Plant Management Program



List the 2 main reasons why mosquito control may be warranted. - ANSWER--nuisance

-disease



Describe the 4 stages of the mosquito life cycle, including the main structural features of
each - ANSWER--*egg*: laid in water, hatch in ~3 days, some laid on dry land and
hatch when flooded

-*larva*: "wiggler", 4 instars with molting in between each, filterers, air tube to breath
from surface

, -*pupa*: comma shaped, non-feeding, lasts a few days, contain respiratory trumpets,
"tumblers"

-*adult*: 1 pair wings, elongated probiscis, pair of antennae, males have bushy
antennae while females have short and sparse antennae



List the types of info you need about a mosquito species before you can develop an
effective program to control it. - ANSWER--the types and locations of breeding sites

-# of generations per year

-host preference of the females (what animals they prefer to get blood from)

-seasonal population levels and how rainfall affects them

-their flight range

-common resting areas

-whether the species can transmit pathogens that may be present in your area

-whether the mosquitoes carry pathogens that are present in wildlife populations



Describe the habits of Aedes triseriatus, Aedes vexans, and Culex pipiens species of
mosquitoes. - ANSWER--*Aedes triseriatus*: tree-hole mosquito; breeds in old tires, tin
cans, barrels, tree holes and stumps; several generations per year; main vector of La
Crosse encephalitis

-*Aedes vexans*: most common pest species in state from late spring-late fall; "inland
floodwater mosquito"; larvae in roadside puddles, woodland pools, temporary pools,
and river bottoms; continuous breeding in wet years; survives winter and dry periods in
egg stage; adults migrate 15-20 miles or more from breeding sites and can live for 3-4
weeks; eggs dormant for up to 5 years before flooding prompts hatching

-*Culex pipiens*: breed in temporary or permanent pools that are high in OM like ditches
or sewage lagoons; females lay eggs in rafts and eggs hatch quickly; responsible for St.
Louis encephalitis and West Nile Virus.

-Both Aedes triseriatus and Culex pipiens breed in "backyard sites" like bird baths,
ponds, tree holes, buckets, tires, and rain barrels.



List the 3 main mosquito-transmitted diseases that occur in WI and know the mosquito
vector for each. - ANSWER--*La Crosse Encephalitis*: Aedes triseriatus

-*West Nile Virus*: Culex pipiens

-*Dog Heartworm*: Aedes vexans

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller IMORA. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

62890 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.99
  • (0)
  Add to cart