How does the amount of oxygen in the water affect the oyster population

Stimulated by increases in water temperature to 64-68°F (18-20°C), oysters generally spawn (release eggs and sperm) from May through September in the Chesapeake Bay. Fertilized eggs hatch into free-swimming larvae that settle to the bottom two to three weeks after hatching. They attach (set) to hard surfaces such as the shells of other oysters. The newly attached oysters—called spat—begin to grow at the rate of about an inch per year. Growth rates can be affected by temperature, food quantity, salinity, and disease. Shell growth usually occurs in the spring and soft body tissue growth occurs after spawning. Oysters usually reach market size (3 inches in Maryland and Virginia) three to five years after spat settlement.

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.