Microlife: Most wanted identifications

In the samples I have taken there are a variety of algae, protozoa, and animals that I have not been able to identify. In many cases I wasn’t able to observe them in enough detail, or the key features are not visible in a living specimen. In others, though, I simply don’t know which characters to look for or the range of possibilities.

The following images are the ones I think are most likely to be recognizable by someone more familiar with the groups in question. Many others are listed in the samples. If you have any insights on these, or think any additional notes on them might be helpful, I would be grateful to hear from you.

Chlorophyta, Tracheophyta; Ciliophora, Miozoa, Ochrophyta; Amoebozoa; Gnathifera, Tardigrada, Arthropoda; Uncertain objects

Since the idea of species is still developing in many groups, I usually only bother with identification as far as genera. However, in cases where these vary between sources – Chilodonella, Coleps, Synedra, and so on – it would be helpful to have a rough idea which species I might have seen.

Kingdom Plantae
…Phylum Chlorophyta – green algae

Chlorophyte
Spring puddle - about 6-19 µm wide
Ch 1: Chlorophyta
Chlorophyte
Duck pond - colony about 35 µm
Ch 2: Chlorophyceae
Chlorophyte
Chestermere Lake - about 35 µm wide
Ch 3: Chlorophyta

…Phylum Tracheophyta – vascular plants

Dissected leaf
Stormwater ponds - about 4.8 mm
Tr 1: Tracheophyta

Kingdom Chromista
…Phylum Ciliophora – ciliates

Spirotrich
Glenmore Reservoir - about 65 µm
Ci 1: Spirotrichea
Spirotrich
Fish Creek - about 130 µm
Ci 2: Spirotrichea
Spirotrich
Fish Creek - body about 50 µm
Ci 3: Spirotrichea
Spirotrich
Puddle sample - about 145 µm
Ci 4: Spirotrichea
Ciliate
Puddle sample - about 50 µm
Ci 5: Ciliophora
Litostome
Fish Creek - about 420 µm
Ci 6: Litostomatea
Spathidiida
Puddle sample - about 120 µm
Ci 7: Spathidiida
Ciliate
Puddle sample - about 85 µm
Ci 8: Ciliophora
Spirotrich, Phyllopharyngea
Stormwater ponds - about 90, 80 µm
Ci 9: Spirotrichea, Phyllopharyngea
Phyllopharyngea
Fish Creek - about 130 µm
Ci 10: Phyllopharyngea
Ciliate
Marsh sample - about 130 µm
Ci 11: Ciliophora
Prostomes
Fish Creek - about 35-40 µm
Ci 12: Prostomatea
Ciliate
Stream sample - about 70 µm
Ci 13: Ciliophora
Ciliate
Glenmore Reservoir - about 85 µm
Ci 14: Ciliophora
Ciliate
Duck pond - about 160 µm
Ci 15: Ciliophora
Ciliate
Puddle sample - about 22 µm
Ci 16: Ciliophora
Sessilid
Puddle sample - about 70 µm
Ci 17: Sessilida
Vaginicolid
Marsh sample - about 190 µm
Ci 18: Vaginicolidae

…Phylum Miozoa

Dinoflagellate
Puddle sample - about 35 µm
Mi 1: Peridinea
Dinoflagellate
Glenmore Reservoir - about 40 µm
Mi 2: Peridinea
Dinoflagellate
Spring puddle - about 65 µm
Mi 3: Peridinea

…Phylum Ochrophyta – heterokont algae

Diatoms
Fish Creek - about 230-245 µm
Oc 1: Diatomeae
Diatom
Marsh sample - about 75 µm
Oc 2: Diatomeae
Diatom
Fish Creek - about 70 µm
Oc 3: Diatomeae
Diatoms
Fish Creek - cells about 13 µm
Oc 4: Diatomeae
Diatom
Chestermere Lake - about 100 µm
Oc 5: Diatomeae
Diatom
Fish Creek - about 190 µm
Oc 6: Diatomeae
Diatoms
Stormwater ponds - about 45 µm
Oc 7: Diatomeae

Kingdom Protozoa
…Phylum Amoebozoa

Discosea
Fish Creek - about 50 µm wide
Am 1: Discosea
Amoebozoa
Duck pond - about 115 µm
Am 2: Amoebozoa
Tubulinea
Marsh sample - about 165 µm
Am 3: Tubulinea
Arcellinid
Marsh sample - shell about 170 µm
Am 4: Arcellinida

Kingdom Animalia
…Phylum Gnathifera – rotifers & allies

Bdelloid
Stormwater ponds - about 110 µm wide
Gn 1: Bdelloida
Ploima
Marsh sample - about 175 µm
Gn 2: Ploima
Ploima
Chestermere Lake - body about 95 µm
Gn 3: Ploima
Ploima
Fish Creek - about 100 µm
Gn 4: Ploima
Ploima
Marsh sample - body about 90 µm
Gn 5: Ploima
Ploima
Chestermere Lake - about 100 µm
Gn 6: Ploima
Ploima
Fish Creek - body about 180 µm
Gn 7: Ploima
Ploima
Marsh sample - body about 140 µm
Gn 8: Ploima
Ploima
Fish Creek - about 215 µm
Gn 9: Ploima
Ploima
Duck pond - about 220 µm
Gn 10: Ploima
Ploima
Fish Creek - about 165 µm
Gn 11: Ploima

…Phylum Tardigrada

Tardigrade
Fish Creek - about 190 µm
Ta 1: Tardigrada
Tradigrade
Puddle sample - about 485 µm
Ta 2: Tardigrada

…Phylum Arthropoda – insects, crustaceans & allies

Copepod
Marsh sample - body about 300 µm
Ar 1: Copepoda
Chydorid
Duck pond - about 275 µm
Ar 2: Chydoridae
Chydoridae
Marsh sample - about 310 µm
Ar 3: Chydoridae
Fly larva
Stormwater ponds - about 3.2 mm
Ar 4: Diptera, larva
Water beetle
Duck pond - body about 5.5 mm
Ar 5: Coleoptera

Uncertain objects

Unknown
Marsh sample - about 2-4 µm wide
Un 1: Non-moving branched object
Unknown
Puddle sample - tips up to 50 µm wide
Un 2: Branched colony
Unknown
Marsh sample - cells about 40 µm
Un 3: Non-motile
Unknown
Stream sample - body about 30 µm
Un 4: Slow-moving heliozoan
Uncertain
Spring puddle - body about 50 µm
Un 5: Dark heliozoan-like