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Hawaiian Bobtail Squid Theme (Late Stage Development Eggs): Research by Dr. Spencer Nyholm

$19.00 – $400.00

The Nyholm lab studies beneficial host-microbe interactions between the Hawaiian bobtail squid, Euprymna scolopes, and the bioluminescent bacterium, Vibrio fischeri. Hawaiian bobtail squid are nocturnal predators, remaining buried under the sand during the day and coming out to hunt for shrimp at night neat coral reefs. The squid have a light organ on their underside that houses a colony of glowing bacteria (V. fischeri). The squid uses this bacterial bioluminescence in a form of camouflage called counter-illumination, masking it’s silhouette by matching moonlight and starlight; thus hiding from predators swimming below. The light organ is attached to the ink sac and it can use this ink like a type of shutter to control the amount of light. This likely helps the squid adjust to variable light conditions, for example cloudy nights or a full vs. new moon. In this image of a juvenile squid, you can clearly see the bi-lobed light organ and ink sac in the center of the squid’s mantle cavity. 

The Hawaiian bobtail squid lay their eggs in clutches on the sea floor, where they take approximately three weeks to develop. This series of macropod images allows us to see the developing squid and monitor embryogenesis. Once the squid hatch, V. fischeri from seawater colonize the light organ within hours. This macropod image allows us to see a close-up view of the ciliated appendage-like structure found on the surface of the juvenile squid’s light organ. Once the squid hatches, the cilia assist in bringing V. fischeri in the seawater to pores at the base of the light organ. These pores lead to inner crypts, where only V. fischeri can enter and colonize. V. fischeri is a relatively rare member of the seawater bacterial community, making up less than 0.1%. The Nyholm lab is trying to understand how the squid’s immune system can differentiate between the symbiont and all the other different kinds of bacteria in seawater.

While the light organ of the squid exemplifies a highly specific beneficial relationship between bacteria and host to provide camouflage at night, this organ is only found in some squid species. All squid, however, are capable of another type of camouflage, cryptic coloration. Squid skin contains special pigmented cells called chromatophores that can change the overall color of the squid in seconds. Each chromatophore contains pigment granules surrounded by nerve and muscle fibers. When these muscles are contracted, the pigment sac expands, creating a larger surface area of color. When the muscles relax, the pigment sac can shrink to a small dot, 15 times smaller than their expanded size, hiding the color. In these macropod images you can see relaxed chromatophores on the mantle and contracted chromatophores around the eyes. The macropod images allow us to see these pigment cells in great detail.

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Parson Spider

$19.00 – $400.00

The spider species Herpyllus ecclesiasticus is commonly called the eastern parson spider, after the abdominal markings resembling an old-style cravat worn by clergy in the 18th century

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Salticidae on Water 5x

$19.00 – $400.00

The jumping spider family contains more than 500 described genera and about 5,000 described species, making it the largest family of spiders with about 13% of all species.

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Salticidae on Water

$19.00 – $400.00

The jumping spider family contains more than 500 described genera and about 5,000 described species, making it the largest family of spiders with about 13% of all species.

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Concrete mite (Balaustium), Tolland, CT 6.6.15

$19.00 – $400.00

Mites, along with ticks, are small arthropods belonging to the subclass Acari and the class Arachnida. The scientific discipline devoted to the study of ticks and mites is called acarology.

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Leech

$19.00 – $400.00

The annelids (Annelida, from Latin anellus, “little ring”), also known as the ringed worms or segmented worms, are a large invertebrate phylum, with over 17,000 modern species including ragworms, earthworms, and leeches.

Oligochaetes are full hermaphrodites and produce a ring-like cocoon around their bodies, in which the eggs and hatchlings are nourished until they are ready to emerge.

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Leech Mouthparts

$19.00 – $400.00

The annelids (Annelida, from Latin anellus, “little ring”), also known as the ringed worms or segmented worms, are a large invertebrate phylum, with over 17,000 modern species including ragworms, earthworms, and leeches.

Oligochaetes are full hermaphrodites and produce a ring-like cocoon around their bodies, in which the eggs and hatchlings are nourished until they are ready to emerge.

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5x Red Algae, Dried and Preserved, Long Island Sound, NY

$19.00 – $400.00

The red algae, or Rhodophyta, are one of the oldest groups of eukaryotic algae, and also one of the largest, with about 5,000–6,000 species of mostly multicellular, marine algae, including many notable seaweeds.

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Red Algae, Dried and Preserved, Long Island Sound, NY

$19.00 – $400.00

The red algae, or Rhodophyta, are one of the oldest groups of eukaryotic algae, and also one of the largest, with about 5,000–6,000 species of mostly multicellular, marine algae, including many notable seaweeds.

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Green Algae, Long Island Sound, NY

$19.00 – $400.00

The green algae are a large, informal grouping of algae consisting of the Chlorophyte and Charophyte algae, which are now placed in separate Divisions. The land plants or Embryophytes are thought to have emerged from the Charophytes.

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Archeological Artifacts of Connecticut USA, Bird Stone

$19.00 – $400.00

Bird stones are prehistoric, abstract stone carvings made by Native Americans. The artifacts were a common inclusion in graves and thought to have ceremonial importance. They are noted for their distinctive simplicity and beauty.

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50x Turquois glass seed bead, type IIa40, mid-17th century, eastern New York, Cook Collection , UConn

$19.00 – $400.00

Making beads is an old craft. Bone, stone (turquoise and other semi-precious stones) and shell beads are still made the ancient way, little affected by modern technology. Sea shells, the commonest material for handmade beads, have been important native regional trade items for thousands of years.

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Chert Madison type arrow point, mid-17th century, eastern New York, Cook Collection , UConn

$19.00 – $400.00

The bow and arrow represents one of the great technological advancements in weaponry in the ancient world. In fact, the bow is the first mechanical device that could store energy, as the arrow was held in the string before its release. Recent distance records in flight archery for pulled bows are around one third mile, the longest crossbow shot is 1.16 miles! Bows and arrows were used just about everywhere in the world except Australia where spear throwers were the preferred weapon. Triangular shaped arrow points were one of the most common types of arrow points used on the tips of arrows.

Select options This product has multiple variants. The options may be chosen on the product page

Turquois glass seed bead, type IIa40, mid-17th century, eastern New York, Cook Collection , UConn

$19.00 – $400.00

Making beads is an old craft. Bone, stone (turquoise and other semi-precious stones) and shell beads are still made the ancient way, little affected by modern technology. Sea shells, the commonest material for handmade beads, have been important native regional trade items for thousands of years.