BIOL191L Lab 10 | Populations Biology I

note : μm is represented by um, does not include density calculations

group of individuals of the same species in a defined area

Population

includes “all” organisms in a defined area

Community

per capita rate of increase per unit time, instantaneous rate of change of population size per individual

define r (open population)

intrinsic rate of increase

define r (closed population)

r = b - d

equation for r

instantaneous birth rates

define b in “r = b - d”

instantaneous death rates

define d in “r = b - d”

carrying capacity

what does K represent

The maximum level that can be sustained by an environment

Carrying Capacity

Protein from fish, Predators aid in agricultural pest management, Social interactions allow populations of diseases to form and spread

Value of Population to Humans

Live and die quickly, Small, Simple

Microorganism properties that make them good for experimental procedures

Paramecium caudatum

250-300um, slipper shape

Paramecium caudatum (size, shape)

Paramecium bursaria

100-150um, rotund shape, Zoochlorella

Paramecium bursaria (size, shape, algal cell name)

Spirostomum ambiguum

very long 2-3mm, club-shaped ciliate unlike any others

Spirostomum ambiguum (size, shape)

Blepharisma lateritium

pink, 175um long, pear shaped

Blepharisma lateritium (color, size, shape)

Didinium nasutum

predator, swims in a wide spiraling fashion, variable, barrel shaped, two girdles of cilia, oral groove, discharges toxin containing trichocysts

Didinium nasutum (behavior, size, shape, distinctive features)

Interloper, Rotifer

small ciliates or flagellates 750um long, multicellular about 1000 cells, attaches to the bottom by a foot/swims/crawls like an inch-worm, Philodina

Interlopers, Rotifers (size, cellularity, behavior, genus)