Economic Value
These animals form matrilineal groups, exhibit alloparenting, and are poached for their ivory tusks
elephants
This critically endangered animal occurs only in the Gulf of California and is in decline due bycatch in illegal gill nets
vaquita
The number of individuals per unit of space is the
density
This highly inbred animals was subject to a successful genetic restoration effort
Florida panther
The efficiency of energy transfer at each trophic level is approximately:
10%
These gentle animals are poached at the rate of 10,000 per year for their scales and as food
pangolin
This species relies on eucalyptus for food and habitat and is in decline due to low genetic diversity, disease, and climate change-associated increases in fires.
koala
The pattern of population growth that declines with increasing density is:
logistic growth
These co-parenting birds raise one chick every two years
albatross
Species that exert strong effects on the communities they inhabit are:
keystone species
Many species in this animal group have declined due to overfishing for its fins
sharks
This animal is in decline due loss of its sea ice habitat as a result of climate change with excess travel to find prey result in starvation in some individuals.
polar bear
Density dependent factors that affect logistic growth include:
Females of this species have 24–72-hour estrus once per year and offspring do not open their eyes for 6-8 weeks after birth
Giant panda
Predator and prey interactions that result in changes to multiple trophic levels are known as
trophic cascades
Overhunted for their horn, a new approach is to inject radioactive isotope in their horns to discourage poaching
rhinos
Despite overhunting of this species because of its propensity to kill livestock, efforts are in place to extend corridors that will allow this species to be able to roam over larger areas.
jaguar
Fragmented populations that are still connected through corridors such that gene flow still occurs is called:
a metapopulation
Known for their strong parenting bond, during first two years, the young rely completely on the mother for food and are carried everywhere
orangutan
The effect of white nose syndrome on bats is:
starvation
This species has declined due to logging of its old growth forest habitat
Northern spotted owl
These animals are learning to prefer human food and have begun group raiding of crops at night
chimpanzees
The number of individuals a habitat can support is the:
carrying capacity
Populations of this animal with low genetic diversity are being decimated by a virally spread cancer
Tasmanian devil
An example of a mutualism between two species is:
sharks and remoras, plants and bees, clownfish and sea anemone, cattle and cattle egret