Fish Physiology
Chambers of the fish heart consist of
one atrium and one ventricle
Buoyancy is enhanced by
oil content of the liver
The effect of reduced genetic diversity on the decline of the Florida panther was due to
inbreeding
What are ecosystem services?
Benefits humans receive from nature for free
The efficiency of energy transfer at each trophic level is approximately
10%
Respiration/gas exchange occurs through
countercurrent exchange across gills when fish swallows water
Reproduction is by
internal fertilization and viviparity or oviparity
The major issue responsible for the decline of the jaguar was due to
retaliation for killing livestock
Two ways in which the theories of ecological economics differ from those of classical economics:
Include all external costs, questions assumption of constant growth
Species that exert strong effects on the communities they inhabit are
keystone species
Osmoregulation occurs via
chloride cells on gills, excretion of concentrated or dilute urine
The Ampullae of Lorenzini function as
an electrosensory system
The marine mammal that has declined as a result of bycatch in illegal gill nets in the Gulf of California is
the vaquita
Investment in carbon mitigation projects and selling the credit is:
Carbon trading
Predator and prey interactions that result in changes to multiple trophic levels are known as
trophic cascades
Agnathans are
fish lacking jaws and include the hagfish and lamprey
Two members of this group with individual unique external patterns are
whale sharks and spotted eagle rays
The major factor resulting in the decline of koalas is
climate change
Cancelling foreign debt in exchange for the preservation of conservation lands is:
Debt for nature swaps
The effect of white nose syndrome on bats is:
starvation
Lobe-finned fish have
bone development in the pectoral and pelvic fins include the coelacanth and lungfishes
Proteins are metabolized to
urea
The common factor resulting in the decline of the northern spotted owl and orangutan is
cutting of forest habitat
Travel to places to support habitat conservation is known as:
Ecotourism
An example of a mutualism between two species is:
sharks and remoras, plants and bees