Search results
Results From The WOW.Com Content Network
The brain processes underlying conscious awareness of the unpleasantness (suffering), are not well understood. There have been several published lists of criteria for establishing whether non-human animals experience pain, e.g. [39] [40] Some criteria that may indicate the potential of another species, including crustaceans, to feel pain ...
Not all animals have neurons; Trichoplax and sponges lack nerve cells altogether. Neurons may be packed to form structures such as the brain of vertebrates or the neural ganglions of insects . The number of neurons and their relative abundance in different parts of the brain is a determinant of neural function and, consequently, of behavior.
Unlike most shellfish, oysters can have a fairly long shelf life of up to four weeks. However, their taste becomes less pleasant as they age. Fresh oysters must be alive just before consumption or cooking. [67] Cooked oysters that do not open are generally assumed to be previously dead and therefore unsafe. [68]
Some shellfish like oysters can accumulate domoic acid, a toxin produced by diatoms, which the shellfish eat. Domoic acid overstimulates glutamate receptors in the brain, which can cause anything ...
Employees of the Hollywood Oyster company sort fresh oysters in the waters of Chesapeake Bay in March 2014. There have been sudden oyster die-offs there and along other parts of the East Coast ...
The animals have no brain; the nervous system consists of a nerve network and a series of paired ganglia. In all but the most primitive bivalves, two cerebropleural ganglia are on either side of the oesophagus. The cerebral ganglia control the sensory organs, while the pleural ganglia supply nerves to the mantle cavity.
Oysters are the star of every seafood tower, especially when you top it with a squeeze of lemon and a dash of Tabasco. But they can make many people feel squeamish—understandably so.
The brain, in species that have one, encircles the esophagus. Most molluscs have eyes, and all have sensors to detect chemicals, vibrations, and touch. The simplest type of molluscan reproductive system relies on external fertilization, but more complex variations occur.