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.

Plantae; 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 from older to newer sources – Chilodonella, Coleps, Synedra, and so on – it would be helpful to have a rough idea which species I might have seen.

Kingdom Plantae

Chlorophyte
Spring puddle - cells about 11-12 µm
Ch 1: Chlorophyta
Chaetophorales
Marsh sample - filaments up to 7 µm wide
Ch 2: Chaetophorales
Dissected leaf
Stormwater ponds - about 4.8 mm
Tr 1: Tracheophyta

Kingdom Chromista
…Phylum Ciliophora – ciliates

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

…Phylum Miozoa

Dinoflagellate
Puddle sample - about 35 µm
Mi 1: Peridinea
Dinoflagellate
Glenmore Reservoir - about 40 µm
Mi 2: Peridinea

…Phylum Ochrophyta – heterokont algae

Diatom
Marsh sample - about 75 µm
Oc 1: Diatomeae
Diatoms
Fish Creek - cells about 13 µm
Oc 2: Diatomeae
Diatoms
Marsh sample - about 25-40 µm
Oc 3: Diatomeae

Kingdom Protozoa
…Phylum Amoebozoa

Discosea
Fish Creek - about 50 µm wide
Am 1: Discosea
Discosea
Stormwater ponds - about 70 µm
Am 2: Discosea
Amoebozoa
Duck pond - about 115 µm
Am 3: Amoebozoa
Tubulinea
Marsh sample - about 165 µm
Am 4: Tubulinea
Arcellinida
Marsh sample - shell about 170 µm
Am 5: Arcellinida

Kingdom Animalia
…Phylum Gnathifera – rotifers & allies

Ploima
Marsh sample - body about 140 µm
Gn 1: Ploima
Ploima
Fish Creek - about 165 µm
Gn 2: 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

Water flea
Kootenay Lake, British Columbia - body about 390 µm
Ar 1: Anomopoda
Chydorid
Duck pond - about 275 µm
Ar 2: Chydoridae
Chydorid
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
Stream sample - body about 30 µm
Un 2: Slow-moving heliozoan-like