...area is higher then ℃ 1 5 , including cold zone species and subcold zone species ℃ ? Subtropical species （亚热带种） : 20-25℃ ? Tropical species （热带种） : > 25℃ In this chapter we shall discuss the following subj ects: 1 .
This species transmits roundworms that cause lymphatic filariasis in tropical and subtropical regions, as well as West Nile virus and St Louis encephalitis in North America.
这种蚊子在热带和亚热带地区传播导致淋巴丝虫病的线虫，并且在北美传播西尼罗河病毒和圣路易斯型脑炎。
2
The area includes subtropical forests and is home to 400 rare or threatened species.
该地区为亚热带森林并且是承载400余种稀有和濒危物种的家园。
3
Experts have said for years that without drastic action America's largest subtropical wetland was in grave danger, along with endangered species such as the Florida panther and the American crocodile.