SARDKhUNHO

SARDKhUNHO, hayvonhoi poykilotermi (az yunoni — gunogun, tagyiryobanda va shegte — gar- mi), yak guruh jonvaronero guyand, ki harorati badanashon vobasta ba harorati muhiti beruna tagyir yofta meistad. Ba Sardkhunho hamai bemuhraho, mohiho, obkhokiho va khazandaho mansuband. Harorati badani Sardkhunho odatan ba harorati muhiti beruna barobar yo az on hamagi 1—2°Selsiya baland ast. Dar natijai furuburdi garmii oftob yo kori mushakho harorati badani aksari onho baland meshavad.

Masalan, kharorati badani govzanbur dar vaqti parvoz hangomi 4—8°S elsiya budani harorati havo ba 38—44’Selsiya merasad, vale badi ba okhir rasidani parvoz zud khunuk shuda, ba harorati muhiti beruna barobar meshavad. Az had ziyod baland va yo past shudani harorati muhiti atrof Sardkhunhoro karakht mekunad yo onhoro ba halokat meorad. Aksari onho qismi ziyodi sol karakht meboshand. Masalan, sangpushti dashti sole hamagi 3 moh faol meboshadu khalos. Ba tufayli sust inkishof yoftani sistemai asabi markazi va past budani mubodilai moddaho Sardkhunho mekha- nizmhoi tanzimi harorat nadorand.