Bio1152
Chapter
51
Animal Behavior
Animal
behavior
may have
("how") and
("why") causation.
Innate behaviors are
determined and include simple
movement
such as
, and
, an
oriented
movement toward or away from a stimulus.
A
action pattern (FAP) is triggered by an
external
stimulus. More complex behaviors such as
migration
may also be largely genetically
programmed.
Animals communicate by using
, behaviors that cause a change in another animal's behavior.
signals
include
that allow communication through
.
signals
control courtship behaviors of many insects and birds.
Some animals are capable of
communication via complex
movements.
occurs when behaviors are modified based on specific experiences.
Repeated exposure to the same stimulus may lead to loss of responsiveness to that stimulus in a
process
called
.
Many animals exhibit
during an early stage of development called the
(or critical)
period.
learning
takes place when animals associate one feature of their environment with another.
Mating
systems include
,
, and
.
In many species, females choose their mate in a process called
selection,
or
choice.
Males often
for females in a process called
selection that can
variation among males and involve
behavior.
social
behavior
can be explained by
fitness based on
selection.
The selective advantage of altruism can be quantified with
rule:
an individual can proliferate its
by helping offspring of close relatives.
Bio1152
Chapter
52
An Introduction to Ecology and the Biosphere
Ecology is the study of the interactions between
and the
environment,
including
both
(nonliving) and
(living)
components.
Biotic factors such as
,
, and other
interactions
among species can affect the distribution of organisms.
factors that affect the distribution of organisms include
sunlight,
,
wind,
water,
and
soil.
The angle of the sun changes due to the
of the
Earth,
leading to
climate changes every year.
Large bodies of
water
have a
effect on the climate of nearby terrestrial environments. Lakes experience
seasonal
in temperate regions.
Mountains
can block
winds and cast a rain
on the
side.
The biotic and abiotic factors determine the nature of broad associations, called
.
biomes are divided into
and
biomes based on
, and
stratified
into
by light penetration, temperature, and depth.
Lakes:
Wetlands:
Streams and rivers:
Estuaries:
Coral reefs:
Intertidal zones:
Oceanic pelagic zone:
Marine benthic zone:
Review:
Aquatic Biomes
biomes are largely determined by the
and the types of vegetation adapted to the
and
of an area.
Tropical forest:
Desert:
Savanna:
Chaparral:
Temperate grassland:
Coniferous forest:
Temperate broadleaf forest:
Tundra:
Review:
Terrestrial Biomes