QSB Riley
QSB Riley kdorfman Wed, 01/11/2012 - 21:02QSB lab syllabus
QSB lab syllabus kdorfman Mon, 02/06/2012 - 14:43LABORATORY SCHEDULE
- 01/24 01/26 0 No laboratory
- 01/31 02/02 1 Welcome to the resistome
- 02/07 02/09 2 Welcome to the resistome
- 02/14 02/16 3 Welcome to the resistome
- 02/21 02/23 4 The ecology of pond scum
- 02/28 03/01 5 The ecology of pond scum
- 03/06 03/08 6 The physics of physiology
- 03/13 03/15 7 Electrical beings: muscle physiology
- 03/20 03/22 0 No labs – spring break
- 03/27 03/29 8 Electrical beings: muscle physiology
- 04/03 04/05 9 Electrical beings: muscle physiology
- 04/10 04/12 10 Behavioral ecology: niche partitioning in birds
- 04/17 04/19 11 Behavioral ecology: niche partitioning in birds (FIELD WORK – NO LAB SESSIONS)
- 04/24 04/26 12 Behavioral ecology: niche partitioning in birds
2018 Biocube
2018 Biocube kdorfman Wed, 03/21/2018 - 13:53Biocubes: Exploring Biodiversity
Aluminum tubes (8601) @ $0.55 from (speak to David):
K & S Precision Metals
6911 W 59th Street
Chicago, IL 60638
773-586-8503
2022 QSB
2022 QSB kdorfman Fri, 01/07/2022 - 16:13Tu Th mornings
Peg Riley
2024 QSB
2024 QSB kdorfman Wed, 02/21/2024 - 18:43Antibiotic Resistance Prep Materials
Week | Dates | materials |
---|---|---|
1 | 3/5 & 3/7 | E.coli from Peg |
S. epidermidis from Peg | ||
beads | ||
waste beakers | ||
pipetmen & tips | ||
antibiotic disks (>= 80 of >= 6 antibiotics) | ||
forceps | ||
ethanol spray bottles | ||
kimwipes | ||
parafilm | ||
scissors | ||
sandwich bags | ||
gloves | ||
LB plates (>= 1 per student) | ||
MC plates (>= 1 per student) | ||
37C incubator | ||
2 | 3/12 & 3/14 | rulers |
LB (14 per pair) | ||
MC (8 per pair) | ||
beads | ||
waste buckets | ||
pipetmen & tips | ||
spatulas | ||
sterile tubes of 9 mL "DM" 14 per pair | ||
50 mL sterile "DM" | ||
50 mL conical (1 per student) | ||
ethanol spray bottles | ||
digital scales, weigh boats | ||
vortex | ||
kimwipes | ||
parafilm | ||
scissors | ||
E coli (from Peg) | ||
37C incubator | ||
3 | 3/26 & 3/28 | 5 LB/ person |
antibiotic discs (5 per person of 6 types) | ||
swabs | ||
beads | ||
waste beakers | ||
markers | ||
forceps | ||
parafilm & scissors | ||
rulers | ||
gloves | ||
E. coli (from Peg) | ||
37C incubator | ||
4 | 4/2 & 4/4 | no materials |
Antibiotic Resistance
Antibiotic Resistance kdorfman Wed, 01/11/2012 - 21:05Antibiotic Disks 2023
Antibiotic Disks 2023 kdorfman Tue, 01/03/2023 - 19:35antibiotic | full | partial | exp |
---|---|---|---|
Ampicillin | none | minimal | 2023 |
Ceftazidime | 10 | 2 | 2023/10/31 |
Chloramphenacol | 9 | 2 | 2025/10/31 |
Doxycycline | 9 | 2 | 2024/10/31 |
Erythromycin | 9 | 1 | 2025/10/31 |
Kanamycin | 10 | 1 | 2025/10/31 |
Neomycin | 9 | 1 | 2025/10/31 |
Novobiocin | none | 1 | 2023/03/31 |
Penicillin | 7 | 3 | 2023/09/30 |
Streptomycin | 19 | 0 | 2026/08/31 |
Tetracycline | 3 | 2 | 2024/04/30 |
Trimethoprim | 2 | 0 | 2022 |
Vancomycin | 9 | 0 | 2025/02/08 |
Resistance 2012
Resistance 2012 kdorfman Thu, 01/17/2013 - 18:39Resistance 1
Resistance 1 kdorfman Wed, 01/11/2012 - 22:061/31/12 and 2/2/12
- 6 tubes of freshly growing E. coli BZB1011 in LB (one on each set of desks) from Peg's lab
- 6 tubes with 20 mL sterile LB (one on each set of desks)
- ~150 Sterile swabs (one beaker full per set of desks) (= 2 100-packs, sterilized)
- 12 Pipetteman and tips (1 per 2 students) (for 10 to 100 µL volumes)
- ~125 MacConkey plates (about 4 per student with extras available) @ 25 mL/plate = 3125 mL (@ 50 g/L = 62.5 g)
- 24 black markers
- shelf in an incubator
- shelf in a refrigerator
- camera to photograph plates (or students use iphones)
- scale for weighing 25 grams
- weigh boats
- vortexes
Have on hand for student use outside of class hours:
- Scales, weigh boats and vortexes
- 500 sterile capped tubes with 25 mL LB – need about 10/student
- pipetman and 100 µL tips – need about 10 tips per student
- BZB1011 for use as positive control – stored in refrigerator
- 500 MacConkey plates – need about 10 per student
- 500 sterile swabs – need about 10 per student
E. coli BZB1011
E. coli BZB1011 kdorfman Wed, 01/11/2012 - 22:17Get from Peg
Grow in LB
LB
LB kdorfman Mon, 01/16/2012 - 19:35Luria-Bertani broth (Miller)
LB broth (Fisher BP1426500) 500 g
25 g/L
= 20 g/800 mL (in a 1 L bottle)
Autoclave on liquid cycle 45 min
= 87.5 g/3.5L (in a 4 L flask)
Autoclave on liquid cycle 80 min
Aliquot 25 mL/tube 500 tubes (= 12.5 L)
MacConkey plates
MacConkey plates kdorfman Wed, 01/11/2012 - 22:17MacConkey Agar Fisher 212122 (Difco)
to distinguish Lac+ and Lac- bacterial strains.
50 g/L
Total plates needed =~625
in 2 L flasks
flasks | Total vol (L) | max # plates |
---|---|---|
1 | 1.75 | 70 |
2 | 3.5 | 140 |
3 | 5.25 | 210 |
4 | 7 | 280 |
5 | 8.75 | 350 |
6 | 10.5 | 420 |
7 | 12.25 | 490 |
8 | 14 | 540 |
- 2-L flasks, each with:
- 87.5 g MacConkey dry mix
- 1.75 L distilled water
- magnetic stir bar
- Stir to mix.
- Cover loosely with foil
- Pack Pour-Boy tubing in foil to go in same cycle if it's not already sterile
- Autoclave 55 min, liquid cycle
- Cool till handle-able on stir plate
- Dispense 25 mL per plate with Pour-Boy, stacking 10 tall.
in 4 L flasks
- 4 L flasks, each with
- 175 g MacConkey dry mix
- 3.5 L distilled water
- magnetic stir bar
- Stir to mix.
- Cover loosely with foil
- Pack Pour-Boy tubing in foil to go in same cycle if it's not already sterile
- Autoclave 75 min, liquid cycle
- Cool till handle-able on stir plate
- Dispense 25 mL per plate with Pour-Boy, stacking 10 tall
flasks | total vol (L) | max # plates |
---|---|---|
1 | 3.5 | 140 |
2 | 7 | 280 |
3 | 10.5 | 420 |
4 | 14 | 560 |
Mueller-Hinton agar
Mueller-Hinton agar kdorfman Fri, 01/20/2012 - 22:3990922 Mueller Hinton Broth 2 from Sigma
22 grams per liter, consisting of:
- Casein acid hydrolysate 17.5
- Beef extract 3.0
- Starch 1.5
Final pH 7.3 +/- 0.2 at 25°C
Add 17 g agar per L
Make 3.5 L in a 4L flask: (yields up to 140 plates)
77 g broth mix
stir till dissolved. Leave stir bar in
59.5 g agar
autoclave 80 minutes
QSB antibiotics
QSB antibiotics kdorfman Thu, 01/12/2012 - 14:40From Peg's list (weight indicates how much should be on one disk.)
Calculate concentration from volume needed per disk (25 uL)
Make 35 mL of each (because the filter syringe only holds that much)
See recipes in stock solutions.
Make 35 mL each, make 48 0.7 mL aliquots
Antibiotic | ug/disk | mg/mL | category | solubility | Fisher # |
---|---|---|---|---|---|
Ampicillin | 10 | 0.4 | beta-lactam | 50 mg/mL in 1 M NH4OH | |
Erythromycin | 15 | 0.6 | macrolide | 50 mg/mL in EtOH | ICN19452901 1g $33.68 |
tetracycline | 30 | 1.2 | tetracycline | 10 mg/mL in water | |
cipro | 5 | 0.2 | quinolone | 30 mg/mL in water | |
Kanamycin | 30 | 1.2 | Aminoglycoside | 50 mg/mL in water |
cipro solubility http://www.inspiralis.com/go/antibiotics.php 30 mg/mL in water
ampicillin solubility 50MG/ML IN 1M AMMONIUM HYDROXIDE http://www.sigmaaldrich.com/catalog/DataSheetPage.do?brandKey=SIGMA&sym… ampicillin sodium salt is soluble 50 mg/mL in water http://www.bioxys.com/i_gentaur/ampicillin_sodium.htm
erythromycin solubility 50MG/ML IN ETHANOL http://www.sigmaaldrich.com/catalog/DataSheetPage.do?brandKey=SIGMA&sym…
Kanamycin 50 mg/mL in water
Tetracycline 10 mg/mL
The HCl forms are more water soluble
Not using Spring 2012
Antibiotic | ug/disk | mg/mL | category | Fisher # |
---|---|---|---|---|
Amikacin | 30 | BP2643250 250 mg $28 | ||
Cefazolin | 30 | NC9863037 1g/10mL $17 | ||
gentamicin | 10 | ICN1676045 10mg/mL 10 mL $29 | ||
ticarcillin | 7 | 50-121-7983 1 g $45 | ||
trimethoprim | 5 | ICN19552701 1 g $34 | ||
tobramycin | 10 | 50-146-785 100 mg $56 |
Media Tally
Media Tally kdorfman Tue, 02/28/2012 - 14:22Medium | started with (approx) | left over | actually used |
---|---|---|---|
LB 25 mL in 50-mL tube | 500 | 489 | 11 |
LB 20 mL in 125 mL flask | 14 | 14 | 0 |
MacConkey plates | 650 | 162 | 488 |
MH plates | 560 | 325 | 235 |
Soy-Trypticase plates | 32 | 0 | 32 |
Antibiotic | started with | left over | actually used |
---|---|---|---|
amp | 48 | 26 | 22 |
cipro | 48 | 27 | 21 |
erythro | 48 | 34 | 14 |
Kan | 48 | 31 | 17 |
Tetra | 48 | 30 | 18 |
resistance supplies
resistance supplies kdorfman Thu, 01/19/2012 - 15:54Fisher cotton-tipped applicators 23-400-101 (come in 100-count autoclave bags.)
Fisher 43-400-102 plain wood applicators for colony picking
Fisher 11-312A solid glass beads 3mm for spreading liquid on plates
Krackeler 10-231039 Blank discs 1/4" dia. 6 vials of 50 $23.76
Resistance 2013
Resistance 2013 kdorfman Thu, 01/17/2013 - 18:43Antibiotics 2013
Antibiotics 2013 kdorfman Mon, 01/28/2013 - 19:48(weight indicates how much should be on one disk.)
Calculate concentration from volume needed per disk (25 uL)
Make 35 mL of each (because the filter syringe only holds that much)
See recipes in stock solutions.
Make 35 mL each, make 48 0.7 mL aliquots
Antibiotic | ug/disk | mg/mL | category | solubility | Fisher # |
---|---|---|---|---|---|
Ampicillin | 10 | 0.4 | beta-lactam | 50 mg/mL in 1 M NH4OH | |
tetracycline | 30 | 1.2 | tetracycline | 10 mg/mL in water | |
cipro | 5 | 0.2 | quinolone | 30 mg/mL in water | |
Kanamycin | 30 | 1.2 | Aminoglycoside | 50 mg/mL in water |
cipro solubility http://www.inspiralis.com/go/antibiotics.php 30 mg/mL in water
ampicillin solubility 50MG/ML IN 1M AMMONIUM HYDROXIDE http://www.sigmaaldrich.com/catalog/DataSheetPage.do?brandKey=SIGMA&sym… ampicillin sodium salt is soluble 50 mg/mL in water http://www.bioxys.com/i_gentaur/ampicillin_sodium.htm
Kanamycin 50 mg/mL in water
Tetracycline 10 mg/mL
The HCl forms are more water soluble
Plate Tally 2013
Plate Tally 2013 kdorfman Mon, 02/04/2013 - 15:03type | poured | remaining | used |
---|---|---|---|
LB | 222 | 145 | 77 |
McC | 1006 | 280 | 726 |
M-H | 1150 |
Resistance 1 - 2013
Resistance 1 - 2013 kdorfman Thu, 01/17/2013 - 18:52Jan 29 & 31, 2013
200 LB plates
200 MacConkey plates
200 sterile swabs
Biohazard waste beaker at each table
Resistance 2 2013
Resistance 2 2013 kdorfman Mon, 02/04/2013 - 15:0120 MacConkey plates per student
sterile swabs
gloves
spray ethanol
markers
Resistance 3 2013
Resistance 3 2013 kdorfman Mon, 02/04/2013 - 15:1426 Mueller Hinton plates
sterile swabs
26 1-mL aliquots physiological saline
0.9% NaCl (=0.9 g/100 mL = 9 g/L)
sterile sticks
parafilm
markers
gloves
micropipettors & tips
vortex
antibiotic solutions in freezer
sterile disks
sterile forceps
rulers
microtube racks
Resistance 2015
Resistance 2015 kdorfman Fri, 01/16/2015 - 18:22Change antibody concentrations so 10 uL contains the correct number of mg.
Antibiotic | ug/disk | mg/mL | category | solubility | Fisher # |
---|---|---|---|---|---|
Ampicillin | 10 | 1 | beta-lactam | 50 mg/mL in 1 M NH4OH | |
Erythro | 15 | 1.5 | macrolide | 50 mg/mL in EtOH | |
tetracycline | 30 | 3 | tetracycline | 10 mg/mL in water | |
cipro | 5 | 0.5 | quinolone | 30 mg/mL in water | |
Kanamycin | 30 | 3 | Aminoglycoside | 50 mg/mL in water | |
Doxycyline * | 30 | tetracycline | 50 mg/mL in water |
*One group wants 1.2 mg/mL for project
Resistance 2018
Resistance 2018 kdorfman Mon, 01/15/2018 - 20:41225 100mm MacConkey plates + amphotericin (10 ug/mL)
135 100 mm MacConkey plates+ amphotericin (10 ug/mL) + tetracycline(3 ug/mL)
135 100 mm MacConkey plates + amphotericin (10 ug/mL) + tetracycline (30 ug/mL)
Bird Labs
Bird Labs kdorfman Mon, 01/16/2012 - 15:08Buy Birdseed:
- 2 25 pound bags of black oil sunflower seeds @ $11.95 (2011)
- 1 25 pound bag of thistle seed (NYJER seed) @ $23.49
Amherst Farmer's Supply
April 10: bird lab up at student dorm
April 17: students collect data in field
April 24: bird lab analyses in ISB
Mussel Labs
Mussel Labs kdorfman Mon, 01/16/2012 - 15:052012 mussel labs schedule
2012 mussel labs schedule kdorfman Tue, 03/12/2013 - 14:13week of Feb 28
2/29 (9 am): practice using iworx
Try ordering small (~1-2 L) dispensers, one for artificial sea water and one for artificial pond water
week of March 5
run through with mussels
order 12 mussels 2/28 for delivery Friday 3/1
get marine mussels from grocery store. Make sea water with salt from Patek lab (34 g/L). ADD SALT TO FULL VOLUME OF WATER to avoid precipitating salts.
March 6
iWorx introduction "Physics of physiology"
bring balances in from prep rooms
order 48 mussels for delivery Friday 3/8
March 13
mussel lab 1
Patrick gets mussels from grocery store - they work much better than FW mussels. Make artificial sea water from salt obtained from Patek lab.
March 27
mussel lab 2
order ? mussels for delivery Friday 3/30
April 3
mussel lab 3
Drugs
Drugs kdorfman Mon, 01/16/2012 - 15:07Needed for
March 13 & 15: mussel lab 1
March 27 & 29: mussel lab 2
April 3 & 5: mussel lab 3
Acetyl Choline (Fisher AC159170050 5 gr, $13.92)
Serotonin (Fisher A550328M050 50 mg, $34.32)
Acetylcholine
Acetylcholine kdorfman Thu, 02/23/2012 - 15:57Fisher AC159170050 5 gr, $13.92
MW = 181.7
Working concentration = 10^-4M = 0.01817 g/L
10 mL 100X stock
0.01817 g acetylcholine
10 mL ringers or seawater
12 mL 10X stock for students to make dilutions
1.2 mL 100X stock
Ringers or sea water to 12 mL
Aliquot 2 mL into 5 tubes
15 mL 1X working concentration
0.15 mL 100X stock
Ringers or sea water to 15 mL
aliquot 1 mL into 14 tubes
Serotonin
Serotonin kdorfman Thu, 02/23/2012 - 15:52(Fisher A550328M050 50 mg, $34.32)
MW = 212.68
soluble up to 100 mg/mL in water
Working Concentration = 10^-5M
X | M | mM | µM | mg/mL |
---|---|---|---|---|
1X | 10^-5 | 0.01 | 10 | 0.0021268 |
10X | 10^-4 | 0.1 | 100 | 0.021268 |
100X | 10^-3 | 1 | 1000 | 0.21268 |
1000X | 10^-2 | 10 | 2.1268 |
1.4 mL 1000X stock
=10 mM
3 mg (use the mg scale in 266A)
1.41 mL 1X ringers or sea water
12 mL 10X solution for students to make dilutions
0.12 mL 1000X stock
11.88 mL 1X Ringers or sea water
aliquot 2 mL into 5 tubes
15 mL 1X working concentration for student use
0.015 mL 1000x stock
15 mL Ringers or sea water
aliquot 1 mL into 14 tubes
Mussel saline
Mussel saline kdorfman Mon, 01/16/2012 - 15:06Mussel Ringers
from http://www.biolbull.org/cgi/reprint/181/1/175.pdf
- 5 mM NaCl
- 0.5 mM KCl
- 5 mM CaCl2
- 5 mM NaHCO3
- 5 mM Na2SO4
1X Ringers from 10X stock
100 mL 10X stock per L final volume
Ringers needed for
- diluting drugs
- keeping dissected mussels moist
10X Ringers from stock solutions
Stock solution | ci (M) | cf (M) | 50 | 75 | 100 | 200 | final vol (mL) |
---|---|---|---|---|---|---|---|
NaCl | 5 | 0.05 | 0.5 | 0.75 | 1 | 2 | mL |
KCl | 1 | 0.005 | 0.25 | 0.375 | 0.5 | 1 | mL |
CaCl2 | 1 | 0.05 | 2.5 | 3.75 | 5 | 10 | mL |
Na2SO4 | 1 | 0.05 | 2.5 | 3.75 | 5 | 10 | mL |
NaHCO3 1 | 1 | 0.05 | 2.5 | 3.75 | 5 | 10 | mL |
OR dry NaHCO3 | MW=84 | 0.05 | 2.1 | 3.15 | 4.2 | 8.4 | g |
pH 7.8
Filter sterilize (NaHCO3 may not be stable during autoclaving)
-
make fresh - it doesn't keep. ↩︎
Mussels 1
Mussels 1 kdorfman Tue, 03/12/2013 - 14:42Buy mussels from grocery store.
get two bags (they last well in the refrigerator)
Make artificial ocean
Mussels 2 & 3
Mussels 2 & 3 kdorfman Tue, 03/12/2013 - 14:44Check sea water supply
Make drugs
Pond Water
Pond Water kdorfman Thu, 03/01/2012 - 16:25Cichlid minerals
Cichlid minerals kdorfman Fri, 03/02/2012 - 15:43API Natural Trace
African Cichlid naturally derived trace minerals
Use 66 µL/L
Same for crayfish tank.
Calculations
for cichlids (as per bottle):
5 mL/gal x 0.264 gal/L = 0.132 mL/L = 132 µL/L
Divide in half for FW mussels and crayfish
66 µL/L
Water recipe
Water recipe kdorfman Fri, 03/02/2012 - 15:35Artificial Pond Water for Mussels
from http://www.biolbull.org/cgi/reprint/181/1/175.pdf
Use for partial water changes in mussel "aquaria"
Salt | 1X (mM) | 10X (mM) | 100X (mM) |
---|---|---|---|
CaCl2 | 0.4 | 4 | 40 |
KCl | 0.05 | 0.5 | 5 |
NaCl | 0.5 | 5 | 50 |
NaHCO3 | 0.2 | 2 | 20 |
pH 7
100 X from stock solutions
80 mL aliquots to dilute to 8 L in carboy.
3 boxes changed daily for 3 weeks
Stock solution | ci (M) | cf (M) | 80 | 800 | 1280 | 1600 | final vol (mL) |
---|---|---|---|---|---|---|---|
NaCl | 5 | 0.05 | 0.8 | 8 | 12.8 | 16 | mL |
KCl | 1 | 0.005 | 0.4 | 4 | 6.4 | 8 | mL |
CaCl2 | 1 | 0.04 | 3.2 | 32 | 51.2 | 64 | mL |
NaHCO3 1 | 1 | 0.02 | 1.6 | 16 | 25.6 | 32 | mL |
OR dry NaHCO3 | MW=84 | 0.02 | 0.134 | 1.344 | 2.15 | 2.688 | g |
pH 7
Filter sterilize (NaHCO3 may not be stable during autoclaving)
-
make fresh; NaHCO3 is only stable for a couple of weeks. OOPS CANNOT GET THIS MUCH INTO SOLUTION! ↩︎
Sea Water
Sea Water kdorfman Thu, 05/24/2012 - 16:16Make artificial sea water
Get salts from Patek lab.
PUT WATER IN FIRST!
Mix in 8L carboy.
iworx lab
iworx lab kdorfman Tue, 03/12/2013 - 14:11iWorx introduction "Physics of physiology"
bring balances in from prep rooms
set up
- power supply
- transducer with thread and hook
- ring stand
- clamp
- baggies for treats
- computer (best on the right, power supply, etc. on the left)
mussel equipment
mussel equipment kdorfman Tue, 03/13/2012 - 13:33Per pair:
- Dissecting pan
- Dissecting bowl with black wax at the bottom
- Ball of modeling clay
- Dissecting kit, containing:
- scissors
- 2 forceps
- 2 probes
- scalpel
- thread
- fine insect pin
Nature's Notebook 2017
Nature's Notebook 2017 kdorfman Thu, 03/30/2017 - 17:32I have reserved two vans for each of those days from 730am to noon. Amrita will be driving one van and I was hoping to find someone else to drive the other - Kate do you want to spend time on my farm looking at critters? Just a thought....I can always get my husband to drive the second van if he is free.
Students will be asked to dress appropriately to be out in the meadows and woods. We will drive them to my 90 acre farm - 4 miles from campus - and then they will spend their time learning how to observe nature while contributing to Nature's Notebook, an online phenology program for citizen scientists.
Equipment:
Binoculars - I am hoping that we can have one pair of binoculars per pair of students - which I guess means we need 12 or so. I recall that Sheila Patek ran a bird lab with binoculars - are those still available? I have two pair so if we are in a crunch for them, I can donate mine for those days.
Plastic coated identification sheets - for common birds, mammals, trees/flowers and butterflies. I bought a few sets last year - but we didn't have enough.
We need 8 of each of these: butterflies Guide to common and Exotic butterflies in New England birds Massachusetts Birds Waterford Press trees and flowers New England Trees and Wildflowers
Clipboards with storage. I have found the perfect clipboard that will also hold the plastic field guides and their papers and pens - we will need about 12 of these:
https://www.google.com/webhp?sourceid=chrome-instant&rlz=1C5CHFA_enUS68…
Protist Labs
Protist Labs kdorfman Fri, 02/03/2012 - 16:262014 Protist Diversity
2014 Protist Diversity kdorfman Wed, 01/01/2014 - 18:41Chaos
Chaos kdorfman Sat, 02/04/2012 - 15:43Chaos cultivation
Chaos cultivation kdorfman Sat, 02/04/2012 - 16:59Carolina cultivation
Carolina cultivation kdorfman Thu, 02/16/2012 - 14:36Amoebae from Carolina:
131324 Chaos (Pelomyxa) carolinensis, Living $7.30
Order 12 dishes, 1 per group
Culture includes P. multimicronucleatum and other much smaller organisms, as well as the occasional rotifer.
Try washing, as per Tan:
Transfer individual amoebae with sterile transfer pipette to culture dish with Chaos saline
Leave at 22C in the dark overnight
Next day, they don't look any better (floating, not attached, few pseudopodia)
Feed them anyway.
No improvement.
Better to leave them in the Carolina dish.
Tan Chaos
Tan Chaos kdorfman Thu, 02/16/2012 - 14:27See protocol on Chaos main page
Maintenance
- Use culture-treated dishes
- keep in Chaos saline at 22-24C in the dark
- Every 2-3 days
- count
- change medium
- feed
- Split every 2-3 weeks, or when the debris becomes detrimental
Feeding
- 7-day old Paramecium multimicronucleatum cultures at late log phase or early stationary phase (Fok and Allen, 1979).
- Remove growth medium:
- Filter cultures through a 3-piece glass filter funnel (Whatman)
http://www.whatman.com/GlassMicrofiberAccessories.aspx 1950-007 Filter Funnel, 3-piece, 70 mm, 115 ml reservoir 1/pk Fisher 09-877-3 $223.58
lined with a layer of GF/A glass microfibre filter (Whatman) 7.0cm dia. 1820-070
Fisher 09-874-16A Pack of 100 for $48.50
Wash and concentrate Paramecia in Chaos saline
- concentrate by allowing the medium to be filtered through
- collect concentrated Paramecium suspension in a beaker
Estimate Paramecium concentration
- 10 10uL drops
- count # Paramecium in each
- average x 100 = cells/mL
Feed 36 ± 3 Paramecia per amoeba.
Changing the medium
- Tilt the dish, let amoebae settle to the bottom
- Suck out the old medium
- Carefully squirt fresh medium onto the dish surface
- Repeat 2 or 3 times
- Check the culture
- Fast growing and healthy cultures have little cell debris (dead amoebae, cell fragments) and usually few or no lingering Paramecium left from the previous feeding.
- slow-growing or sick cultures have more cell debris and a large number of Paramecium left from the previous feeding.
Chaos saline
Chaos saline kdorfman Sat, 02/04/2012 - 16:06Chaos inorganic medium from stock solutions
salt | mM |
---|---|
CaCl2.2H2O | 0.5 |
MgSO4.6H2O | 0.05 |
K2HPO4 | 0.16 |
KH2PO4 | 0.11 |
Autoclave
Keep amoebae at 22 - 24C, in the dark.
Each pair of students needs ~60 mL sterile saline
- 10 mL initial Paramecium culture in culture flask
- 50 mL to set up further cultures for experiments
Paramecia
Paramecia kdorfman Sat, 02/04/2012 - 17:00Culturing Paramecium multimicronucleatum to feed Chaos
Carolina 130871 Paramecium multimicronucleatum Demoslide Set $13.50
Make medium from Carolina concentrate 132350 Liquid Protozoan Nutrient Concentrate, Culture Medium, Makes 1 gal, 100 mL $11.00
1 mL LPNC, 9 mL sterile water, 1 sterile wheat seed in a 25 mm2 vented culture flask.
1 mL P. m. culture.
20C in the dark.
Check concentration.
- 10 10µL drops of culture
- on a clean (wipe it first!) slide
- count with dissecting scope and side illumination.
Initial concentration ~40/mL
Plot growth.
Scale up.
P. m. medium
P. m. medium kdorfman Sat, 02/04/2012 - 17:40Growth medium of axenic P. multimicromucleatum culture
from http://protistology.ifmo.ru/num4_2/tan.pdf
Ingredient | conc | MW | supplier | |
---|---|---|---|---|
L-a-Phosphatidylethanolamine (=cephalin) | 0.2 | g/L | Sigma P7943-100MG $352, Fisher 50-750-5972 50g $125 | |
Proteose peptone | 10 | g/L | ||
Tryptone | 0.5 | g/L | ||
Ribonucleic acid | 1.0 | g/L | Sigma R6625-25G $48.90 | |
Magnesium sulfate heptahydrate | 4.2 | mM | ||
Stigmasterol | 0.006 | mM | 412 | =0.00247 g/L Fisher 50-014-46501 1 g $39.30 |
D_Pantothenic acid hemicalcium salt | 0.02 | mM | 238 | =4.76 mg/L 50mg/mL H2O SigmaP2250-5G 24.50 |
Nicotinamide | 0.04 | mM | 122 | Fisher AC12827-1000 100g $14.63 |
Pyridoxal hydrochloride | 0.25 | mM | 203.63 | Fisher AC35271-0010 1g $34.69 need 51 mg/L |
Pyridoxamine dihydrochloride | 0.01 | mM | 241.12 | Fisher AC43625-0010 1g $80.94 need 2.41 mg/L |
Riboflavin | 0.01 | mM | 376.37 | Fisher AC13235-0250 25 g $24.18 need 3.7 mg/L |
Folic acid | 0.06 | mM | 441 | =0.026g/L Fisher 10g AC21663-0100 $13.54 soluble 50mg/mL in 1M NaOH |
Thiamine hydrochloride | 0.04 | mM | 337.27 | Fisher AC14899-0100 10 g $29.79 need 13.5 mg/L |
Biotin | 0.01 | μM | 244.31 | =0.0000024g/L; 100mg/0.41L = 1mM. soluble 50 mg/mL in 2M NH4OH Fisher 50-014-20193 100 mg $30.12 |
Lipoic acid | 0.24 | μM | 206.33 | Fisher 1g BP2682-1 $45.92 50mg/mL EtOH |
NH4OH 500mL Fisher ICN19385490 MP Biomedicals No.:0219385490 $34.49 ~28% MW = 35 so solution is ~1M
In other studies that require stringent, defined conditions, stigmasterol and either oleate, monolein, or synthetic dioleoyl PsE are the only lipids included in the chemically defined medium
The Kit includes
- 250 mL of the fresh Paramecium Culture at ~3,000 cells/ml in a diluted Tübingen E3 medium for Zebrafish embryos
- 250 mL of Paramecium Culture Medium concentrate for preparation of 20.0 L of growth medium
- 50 mL of Paramecium Food for high density cultures, sufficient for preparation of 5.0 L
Suggested schedule of feeding Zebrafish larvae with paramecium
1 kit $75 (shipping and handling included)
P.m. (KD)
P.m. (KD) kdorfman Sat, 02/18/2012 - 15:52Paramecia multimicronucleatum from Parameciavap
http://parameciavap.com/Paramecia.aspx ($45/250 mL)
Get PO from Charlene
To increase population size:
Test cultures for rotifers. Split flasks that have only paramecia
To prepare for student use:
- Sterile Erlenmyers with foam plug
- Chaos saline (http://wahoo.nsm.umass.edu/content/chaos-saline) to volume that gives maximum surface area/volume ratio)
Add sterile wheat seed (~1/25 mL)1
Transfer P.m. from PC to Chaos saline + sterile wheat seed (~1:100)
- Store at 22C in the dark
- Transfer ~10 mL culture to tissue culture flask with new seed (1 flask per pair of students)
-
Wheat seeds support dense rotifer populations. Start the Paramecium culture only with cultures that have no rotifers. Take multiple samples to determine rotifer content. ↩︎
Parameciavap
Parameciavap kdorfman Thu, 02/16/2012 - 16:25Culturing Paramecia ala Parameciavap
PC - 250 mL Paramecia Culture 3000/mL in diluted Tubingen E3 medium for zebrafish embryos
PCM 100X Paramecium Culture Medium concentrate (250 mL)
PF - 200X Paramecium Food for high density cultures (50 mL)
Per Liter:
- PCM 10 mL
- H2O 1 L
- PF 5 mL (can be added after initial incubation)
- PC 33 mL
Keep at 25-27C
After 1 week, add 5 mL PF/L
Culture 1 more week
[For zebrafish, filter and resuspend in Tubingen E3 (5 mM NaCl, 0.17 mM KCl, 0.33 mM CaCl2, and 0.33 mM MgSO4)]
Supplies
Supplies kdorfman Wed, 01/01/2014 - 18:37From Carolina: 131324 Chaos (Pelomyxa) carolinensis, Living $7.30
A simple mass culture of the amoeba Chaos carolinense:
http://protistology.ifmo.ru/num4_2/tan.pdf
(attached below)
Culturing Chaos is not really so simple. Order repeatedly?
131558 Paramecium multimicronucleatum, Conjugating, Living $14.60
130871 Paramecium multimicronucleatum Demoslide Set $13.50
Dishes
Amoebae must have tissue culture treated bottom to attach to.
If you use a culture flask, you can't pick up the amoebae.
Culture flask (Krackeler 40-229331 Celltreat Polystyrene Tissue culture flask 50mL Triangular TC-treated 25cm2 Angled Vent $103.00/200)
If you use culture dishes (Krackeler 40-229670 Tissue culture dish with lid Polystyrene 8mL 70 x 15mm 36.3cm2 With gripping ring $115.00/500), you can more easily see and handle them, but you risk spilling.
Bigger dishes for mass cultivation Krackeler 40-229620 Tissue culture dish with lid Polystyrene 16mL 100 x 15mm 55cm2 With gripping ring $103.00/300