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BI488- Invertebrate Conservation > Week 3 > Flashcards

Flashcards in Week 3 Deck (21)
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1
Q

what are the bases of the food web

A

photosynthetic algae and cyanobacteria

2
Q

photosynthetic algae and cyanobacteria are also commonly called ________

A

phytoplankton

3
Q

what resists phytoplankton from sinking

A

horms, spines and setae are used to increase surface area

4
Q

what are zooplankton

A

wide variety of planktonic organisms that live in lakes, ponds and rivers

5
Q

zooplankton are an important food for what organisms

A

young of year fish- larval stage

6
Q

T or F: planktonic animals can be found in almost all animal phyla

A

T

7
Q

what are the three major groups of zooplankton

A

rotifers, cladocera and copepoda

8
Q

what are some characteristics of rotifers

A

mostly sessile, omnivorous, filter feeding with corona

9
Q

what is a corona

A

rotifer feeder, looks like a crown

10
Q

what are some characteristics of cladocera

A

bivalve carapace (can split into two), swin using large second antennae, filter phytoplanktom, rostrum at front of the body

11
Q

T or F: cladocera reproduce in large number

A

T, hold eggs in their back pouch

12
Q

what are the two major groups of copepoda and how can you distinguish the two

A

Cyclopoids: first antenna much shorter than the body
Clanoids: first antenna about as long as body

13
Q

define invasive species

A

species introduced to regions outside their historic native range

14
Q

what are the filters in terms of invasive species

A

biogeographic, physiological (chemical and physical), and biotic (competitors and predator)

15
Q

Invasive species are a major threat in what area of the world

A

freshwater lakes

16
Q

what is the most common invasion vector

A

ships!!!!!!

17
Q

In the paper by Carpenter and Zanden, what was the goal of the paper

A

to highlight how invasive species and ecosystem services are often not appreciated

18
Q

In the paper by Carpenter and Zanden, where did it takeplace?

A

Lake mendota

19
Q

In the paper by Carpenter and Zanden, what was the invasice species

A

spiny water flea, bythotrephes

20
Q

In the paper by Carpenter and Zanden, how was water clarity measured

A

secchi depth

21
Q

In the paper by Carpenter and Zanden, what season was it most affected?

A

fall