locust
Locust
The locust is related to the grass hopper and from the family Acrididae. Locust are often classed as a swarming stage of a grass hopper. Researches at Oxford University say Swarming is in response to overcrowding. They can breed rapidly under the right circumstances and will migrate when their numbers are big enough. A swam can quickly strip a field and devastate crops. Adult locust can fly large distances at a time. Locust will consume all green material whenever a swam lands. An adult desert locust will grow to approximately 3 inches in length. Male locust have a boat shaped tip while females has two serrated vales that can either be a part of kept together. These valve are used to dig a hole for an egg pod. Predators of the locust include human as they are considered a delicacy in some countries like china also birds and geckoes.
The circulatory system of the locust, like all arthropods is open which differs from structure and function of the closed circulatory system that humans and other vertebrates have. A open circulatory system is suitable for the locust because of its small size. In an open system, blood (usually called hemolymph) spends much of its time flowing freely within body cavities where it makes direct contact with all internal tissues and organs. The dorsal fin is the one closed structure in a locust and extends from the hind end as a tube and runs longitudinally through the thorax and abdomen, along the inside of the dorsal body wall to the head. (http://www.tutorvista.com/content/biology/biology-ii/respiration/grasshopper-gaseous-exchange.php). It is a tube like structure with two parts, the heart (pumping organ) and the aorta (conducting vessel). The heart is divided segmentally into chambers that are valves (lateral openings called ostia) to ensure one-way throw of hemolymph. Peristaltic contractions of the muscles force the hemolympth forward from chamber to chamber. Accessory pumps move hemolymph along the antennae and legs
The locust is related to the grass hopper and from the family Acrididae. Locust are often classed as a swarming stage of a grass hopper. Researches at Oxford University say Swarming is in response to overcrowding. They can breed rapidly under the right circumstances and will migrate when their numbers are big enough. A swam can quickly strip a field and devastate crops. Adult locust can fly large distances at a time. Locust will consume all green material whenever a swam lands. An adult desert locust will grow to approximately 3 inches in length. Male locust have a boat shaped tip while females has two serrated vales that can either be a part of kept together. These valve are used to dig a hole for an egg pod. Predators of the locust include human as they are considered a delicacy in some countries like china also birds and geckoes.
The circulatory system of the locust, like all arthropods is open which differs from structure and function of the closed circulatory system that humans and other vertebrates have. A open circulatory system is suitable for the locust because of its small size. In an open system, blood (usually called hemolymph) spends much of its time flowing freely within body cavities where it makes direct contact with all internal tissues and organs. The dorsal fin is the one closed structure in a locust and extends from the hind end as a tube and runs longitudinally through the thorax and abdomen, along the inside of the dorsal body wall to the head. (http://www.tutorvista.com/content/biology/biology-ii/respiration/grasshopper-gaseous-exchange.php). It is a tube like structure with two parts, the heart (pumping organ) and the aorta (conducting vessel). The heart is divided segmentally into chambers that are valves (lateral openings called ostia) to ensure one-way throw of hemolymph. Peristaltic contractions of the muscles force the hemolympth forward from chamber to chamber. Accessory pumps move hemolymph along the antennae and legs