Test 2 Review

Question 1

Schooling Fishes-

Mechanism

Answer 1

Lateral Line System and Vision

Question 2

Schooling Fishes-

Advantages

Answer 2

Many Eyes Hypothesis->Avoid Predators 
Hydroynamics (Vortices Formation)
Confuse Predators 
Mater Selection 
Resource Aquisition (Long distance migration/habitat selection)

Question 3

Schooling Fishes-

Disadvantages

Answer 3

Conspicuous Nature of School

Sharing food sources

Question 4

Schooling Fishes-
polarized state, what does that mean?
unpolarized state?

Answer 4

Polarized = all going in same direction

Unpolarized=not same direction

Question 5

Schooling Fishes-

Difference between shoaling and schooling

Answer 5

Schooling is swimming in the same coordinated manner

Shoaling is group of fish together for social reasons

Question 6

Schooling Fishes-

How does school stay synchronized?

Answer 6

few individuals in pocket (3-5) change and miliseconds later the rest of the group follows suit

Question 7

Schooling Fishes-

opthomoter reaction is?

Answer 7

When fish are placed in a jar were alternating black and white stripes rotate. When inside this jar, fish will move at the same speed as moving stripes essentially ‘stopping’ the movement to the fish

Question 8

Schooling Fishes-

facultive schooling is?

Answer 8

schooling for a reason

Question 9

Schooling Fishes-

obligate schooling is?

Answer 9

fish will always school

Question 10

Schooling Fishes-

mucous?

Answer 10

mucous is thought to aid in hydrodynamics of school

Question 11

Why Raven’s Share-

juvenile ravens are?

Answer 11

6 months to 2/4 years

Question 12

Why Raven’s Share-

Mechanism

Answer 12

Yelling

Yelling increases as a function of hunger

Question 13

Why Raven’s Share-

A begging call does?

Answer 13

A begging call lowers adult aggression

Question 14

Why Raven’s Share-

How many juveniles does it take to overrun a dominate adult?

Answer 14

over 9

Question 15

Dispersal of Male ground squirrels-

What is the weight that the ground squirrels must reach to leave nest?

Answer 15

125 grams

Question 16

Dispersal of Male ground squirrels-

in 300 ground squirrels, how many dispersed?

Answer 16

92% by first hibernation

Question 17

Dispersal of Male ground squirrels-

How many of the females treated with testosterone dispersed?

Answer 17

75%

Question 18

Dispersal of Male ground squirrels-

When do ground squirrels begin to leave the neonatal nest?

Answer 18

~2months

Question 19

Dispersal of Male ground squirrels-

What is the definition of dispersal?

Answer 19

complete and permanent emigration from an indivduals home range

Question 20

Infanticide in Primates-

Parity?

Answer 20

1x per year/2x with infanticide

Question 21

Infanticide in Primates-

Fecundity?

Answer 21

1 per episode

Question 22

Infanticide in Primates-

Gestation?

Answer 22

200 days

Question 23

Infanticide in Primates-

Interbirth period?

Answer 23

15 months

Question 24

Infanticide in Primates-

How soon after loss of infant does female copulate again?

Answer 24

23 to 80 days

Question 25

Infanticide in Primates-

In 1999 study, how many cases was the killer the father?

Answer 25

16/16 (with DNA) the killer was not the father

Question 26

Infanticide in Primates-

How many infanticides resulted in another birth shortly after?

Answer 26

4 out of 5

Question 27

Infanticide in Primates-

How long was the dominate male reign?

Answer 27

~27 months