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Con Bio > Lect 1 > Flashcards

Lect 1 Flashcards

1
Q

Rosie wolf snail

-native

A
  • Native to the SE US and introduced into Hawaii

- The snails in Hawaii were naive to these sorts of predators

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2
Q

Rats and cats

A
  • Have the caused the extinction of birds

- mostly on islands

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3
Q

There are reduced populations of other things through competition

Example

A

Zebra mussels

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4
Q

There are reduced populations of other things through competition

  • zebra mussels
  • live
A

-Live in freshwater where other few mussels live
-They will even grow on top of things
-Native to Asia
-Well into the Mississippi Watershed, Eerie Watershed
Its not yet established in the susquehanna watershed

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5
Q

There are reduced populations of other things through competition

  • zebra mussels
  • what they do
A
  • They reproduce so quickly so they take over the place where other mussels grow
  • Cost the US millions of dollars
  • They eat all the food before other things even have a chance to get to it
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6
Q

There are reduced populations of other things through competition

  • zebra mussels
  • good
A

The good is that they filter the water

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7
Q

There are reduced populations of other things through competition

  • zebra mussels
  • bad
A

The bad is that you don’t get many other mussels

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8
Q

There are reduced populations of other things through competition

  • zebra mussels
  • to detect them
A

To detect Zebra mussels you take a water sample and look for zebra mussel DNA using barcoding
When you introduce them they can breed with the native species

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9
Q

Our mallard ducks (genus is anas) are super aggressive.

-species

A

Anas is a huge genus that has alot of species. The boundaries between species are not very strong so they hybridize all the time

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10
Q

Our mallard ducks (genus is anas)

-problem

A
  • The problem is we have taken them to places.

- took them to new Zealand.

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11
Q

Mallard ducks

-genetic swamping

A
  • Genetic swamping is when you keep back crossing to the point where the distinction between the two species is gone.
  • The female hybrids almost always reproduce with mallards. So now the population is largely 75% mallard. Those females will now mate with mallards again making it approximately 82%. You get to the point where its 99.9999%
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12
Q

Human health and invasions

Two examples

A

1 Aedes japonicus
Invasive mosquito

2 Ades egypticus
Mosquito

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13
Q

Ades egypticus

Mosquito

A
  • Primary vector for malaria
  • –It is the most competent mosquito to carry malaria
  • It is here
  • To be a competent vector means you can carry it and be a good definitive host
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14
Q

primary culprits for malaria:

A

Vivax, falciparum, plasmodium

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15
Q

Aedes japonicus

Invasive mosquito

A
  • Asian tiger mosquito is the albo pictus
  • Vectors for the really nasty flavy viruses

Family of viruses that cause alot of diseases
Yellow fever, west vile, triple E
-They come out during the day and night

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16
Q

Smallpox

A
  • Endemic to Europe and Asia
  • We broke it over to north america
  • They died bc they were naive to smallpox
17
Q

Ecosystem effects of invasive species

One example is

A

The coastal salt marsh did not exist on the west coast

18
Q

Ecosystem effects of invasive species

-two ex

A

1 Genus Spartina

2 nutria

19
Q

Genus Spartina

A
  • Its a grass

- On the west coast there was none of it, so they created humdreds of acres pf it on the west coast

20
Q

Nutria

A
  • In Louisiana people trapped muskrats and back in the day fur was popular. So populatiom in louisianna went down
  • The meckelhenny family made tobasco.
  • They took nutria from south america and introduced it to louisianna
21
Q

Nutria have big orange teeth

A
  • They were introduced/released into louisianna and they caused beach erosion and wetland loss
  • They ate the plants that held the soil
  • They removed the plants and all the sediments got washed away, so now everything just sinks
  • They make burrows
  • New orleans passed an ordinance that you can shoot nutria from your veichle
22
Q

Rosie Wolf Snail

-what they do

A
  • They eat other snails
  • They devastated the incredibly species rich snails of Hawaii
  • Its wiped out an entire genus with 21 species in Hawaii

Con Bio (13 decks)

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