North Atlantic right whales (Eubalaena glacialis) are big, but they're not the biggest whales. That distinction goes to the blue whale (Balaenoptera musculus), the largest animal on Earth. The orca's size of up to 31 feet (9.4 meters) makes it the largest dolphin. The sperm whale, on the other hand, may not be the biggest whale, but it has the biggest brain to have ever existed on Earth. A comparison chart of whale sizes helps put it all in perspective!
Chikungunya fever is caused by a virus that is spread to people through the bite of infected mosquitoes. Like Dengue, it is transmitted by Aedes mosquitoes, especially Aedes aegypti (the yellow fever mosquito) and Aedes albopictus (the Asian tiger mosquito).
1. Aedes aegypti is the primary vector of the dengue virus or more rarely Aedes albopictus. The dengue mosquito looks like many other mosquitoes and is difficult to identify without the use of a microscope.As a rule, if they are found indoors and feed during the day it is likely that they are Aedes aegypti mosquitoes.. Aedes aegypti is the primary vector of the dengue virus or more rarely Aedes albopictus. The dengue mosquito looks like many other mosquitoes and is difficult to identify without the use of a microscope.