Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Ecology of Mammals > Ch. 22 - Mating > Flashcards

Ch. 22 - Mating Flashcards

1
Q

This produces traits that impact the ability to acquire a mate

A

Sexual selection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the two types of sexual selection?

A

Intersexual and intrasexual selection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In this type of sexual selection, both sexes are involved

A

Intersexual selection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In intersexual selection, this is selected for by a female

A

Specific trait in a male

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Intersexual selection is more common in this group of animals

A

Birds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are three examples of traits selected for in intersexual selection?

A

Body size, coloration, antler size/shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do intersexual selection traits indicate in males?

A

Male condition (sometimes immunological condition)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

This species became extinct due to extreme sexual selection

A

Irish elk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

In this type of sexual selection, only one sex is involved

A

Intrasexual selection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Intrasexual selection usually involves this type of competition

A

Male-male competition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Intrasexual selection is very common in this group of mammals

A

Ungulates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are four mammal groups that use intrasexual selection?

A

Bovids, cervids, primates, pinnipeds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In intrasexual selection, when do solitary males congregate?

A

During the rut

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are three physical characteristics that have developed for success in intrasexual selection?

A

Horns, antlers, canines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

This is the cost of parental behavior increasing the offspring’s chances of survival

A

Parental investment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Parental investment is primarily by this parent

A

Adult female

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are two examples of adult female parental investment?

A

Gestation and lactation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What percent of males provide parental investment and care?

A

10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What type of young usually receive male parental investment?

A

Altricial young

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are three mammal groups that commonly have male parental investment?

A

Carnivores, rodents, primates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

This is the energy expanded and risk taken during breeding and raising young

A

Reproductive effort

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

This form of reproductive effort happens in regular intervals

A

Iteroparity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

This type of reproductive effort happens in a single effort

A

Semelparity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Do mammals usually use iteroparity or semelparity?

A

Iteroparity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What is an example of a semelparous mammal?
Brown antechinus
26
Do r-strategists have long lifespans?
No
27
Do r-strategists have high reproductive capacity?
Yes
28
Do r-strategists have rapid development?
Yes
29
Do r-strategists have large body sizes?
No
30
Do r-strategists use minimal parental care?
Yes
31
Do r-strategists have low numbers of offspring?
No
32
Are r-strategists poor colonizers?
No
33
Do r-strategists experience population boom and bust cycles?
Yes
34
Are r-strategist populations density dependent?
No
35
Do k-strategists have slow growth rates?
Yes
36
Do k-strategists have large body sizes?
Yes
37
Do k-strategists have low postnatal care?
No
38
Do k-strategists have higher numbers of offspring?
No
39
Do k-strategists have short lifespans?
No
40
Are k-strategists usually specialists?
Yes
41
Are k-strategist populations density dependent?
Yes
42
What are two types of specializations of k-strategists?
Niche and nutrition specializations
43
In k-strategists, population numbers stay near this
Carrying capacity (k)
44
Do r-strategist populations ever approach carrying capacity?
No
45
This mating strategy is rare in mammals
Monogamy
46
About what percent of mammals are monogamous?
<5%
47
What are two mammal groups that tend to be monogamous?
Primates and canids
48
Do monogamous mammals tend to have extensive male postnatal care?
Yes
49
What are three types of postnatal care given by monogamous males?
Feeding, defence, socialization
50
What are two hormones involved in monogamous mating strategies?
Oxytocin and vasopressin
51
Oxytocin and vasopressin contribute to these three behaviors in monogamous mating
Long-term pair bonding; Nest and mate defense; Aggression against intruders
52
This reproductive strategy involves mating with multiple partners
Polygamy
53
In this type of reproductive strategy, one male monopolizes multiple females
Polygyny
54
What are three mammal groups that use polygyny?
Ungulates, seals, walruses
55
In this reproductive strategy, females mate with more than one male
Polyandry
56
Is polyandry common in mammals?
No
57
What is an example of a mammal that uses polyandry?
Deer mice
58
This type of young has the ability to move, forage and flee shortly after birth
Precocial young
59
Do precocial young have short infancies?
No
60
Do precocial young have slower postnatal growth?
Yes
61
What group of mammals commonly has precocial young?
Ungulates
62
This type of young is helpless and unable to protect themselves, feed, or flee at birth
Altricial young
63
Do altricial young grow and mature rapidly?
Yes
64
Most mammals have this type of young
Altricial young
65

Ecology of Mammals (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions