Ink from longfin inshore squid, Doryteuthis pealeii, as a chemical and visual defense against two predatory fishes, summer flounder, Paralichthys dentatus, and sea catfish, Ariopsis felis.

Responses of the sea catfish Ariopsis felis to chemical defenses from the sea hare Aplysia californica

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Chemical Defenses of Aplysia Californica and Sensory Processing by Predatory Fishes

In predator-prey interactions, prey species have complex defensive behaviors to protect themselves from predators. Chemical defenses are one tool that is employed to protect against predators, especially for slow-moving or otherwise susceptible prey. Many of these chemical defenses have been studied and the effective compounds identified, but few studies were performed on their mechanisms of de...

Bycatch of the Lake Pontchartrain Basin inshore shrimp fishery and its effect on two sea catfish species: the gafftopsail catfish (Bagre marinus) and the hardhead catfish (Ariopsis felis)

An Unexpected Diversity of Photoreceptor Classes in the Longfin Squid, Doryteuthis pealeii

Cephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expressed in the retina. Furt...

Adverse Effects of Ocean Acidification on Early Development of Squid (Doryteuthis pealeii)

Anthropogenic carbon dioxide (CO2) is being absorbed into the ocean, altering seawater chemistry, with potentially negative impacts on a wide range of marine organisms. The early life stages of invertebrates with internal and external aragonite structures may be particularly vulnerable to this ocean acidification. Impacts to cephalopods, which form aragonite cuttlebones and statoliths, are of c...