Odor Tracking in Aquatic Animals

Panayiota Siskos ’23 Animals use intermittent chemical cues to help avoid predators, find mates, and find food. The speed at which some animals forage shows that more instantaneous sensory feedback is also used. Lobsters have multiple sensors to gather information, including sensilla on antennules with chemosensory cells that detect chemical concentrations and mechanosensory cells that find flow and direction. Several are conditionally rhythmically active and … Continue reading Odor Tracking in Aquatic Animals

As Plastic Spreads, Diseased Coral Reefs Follow

Gene Yang ‘19 275 million people rely on coral reefs for food, coastal protection, and income from tourism. However, as plastic waste continues to spread throughout the ocean, it transmits disease to these same coral reefs. In the first large-scale study to evaluate this impact of plastic on corals, Dr. Joleah Lamb’s team from Cornell University along with other research teams and institutions surveyed 124,884 … Continue reading As Plastic Spreads, Diseased Coral Reefs Follow

Figure 1. Blooms in the Sea of Marmara, the smallest sea in the world

Diatom Filtrates are Killing Machines

By Matthew Lee ‘21 Algal blooms are known for their ability to turn an entire body of water a different color. These periodic blooms harm humans, marine species, and aquatic ecosystems. One such species is the benthic dinoflagellate Ostreopsis ovata, most prevalent in the Mediterranean Sea. It has been observed that Ostreopsis may be vulnerable to allelopathic,  or germination- inhibiting, chemicals produced by diatoms, single-celled … Continue reading Diatom Filtrates are Killing Machines