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Glen Black

Glen Black is a Biological Science Technician based out of Ann Arbor, MI. 

Science and Products

A portable freshwater closed-system fish egg incubation system

To identify fish eggs collected in the field to species, a portable closed‐system fish egg incubation system was designed and used to incubate and hatch the eggs in the laboratory. The system is portable, small in scale (2.54 × 1.52 × 2.03 m), and affordable, with the approximate cost of the system being US$8,300 (2012). The main tank is 678 L and holds a battery of up to 21 (egg) incubation jars.
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Ecosystems, Great Lakes Science Center

Assessment of lake sturgeon (<i>Acipenser fulvescens</i>) spawning efforts in the lower St. Clair River, Michigan

One of the most threatened remaining populations of lake sturgeon in the Great Lakes is found in the connecting channels between Lake Huron and Lake Erie. Only two spawning grounds are presently known to be active in this region, and both are in the St. Clair River. The spawning reef in the St. Clair River delta has been recently colonized by round gobies (Neogobius melanostomus) in densities up t
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Ecosystems, Great Lakes Science Center

Comparative morphology of zebra (<i>Dreissena polymorpha</i>) and quagga (<i>Dreissena bugensis</i>) mussel sperm: Light and electron microscopy

Adult zebra (Dreissena polymorpha) and quagga (Dreissena bugensis) mussels were induced to release large quantities of live spermatozoa by the administration of 5-hydroxytryptamine (serotonin). Sperm were photographed alive using phase-contrast microscopy and were fixed subsequently with glutaraldehyde followed by osmium tetroxide for eventual examination by transmission or scanning electron micro
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Ecosystems, Great Lakes Science Center

Identification of larvae: The zebra mussel (<i>Dreissena polymorpha</i>), quagga mussel (<i>Dreissena rosteriformis bugensis</i>), and Asian clam (<i>Corbicula fluminea</i>)

There are presently four freshwater bivalves in the United States that produce larvae or veligers commonly found in the water column: two forms of Asian clams and two species of dreissenids. Portions of the geographic range of three of these bivalves, one species of Asian clam (Corbicula fluminea), zebra mussels (Dreissena polymorpha), and quagga mussels (Dreissena rosteriformis bugensis), overlap
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Ecosystems, Great Lakes Science Center

Science and Products