meindhak

medhak jeevaashm kaal: traayaasik – vartamaan
laal-akshi vruksh meindhak (Litoria chloris)
vaigyaanik vargeekaran
jagat: jantu sangh: kaurdeta varg: enfeebiya gan: enura meram, 1820
vishv mein meindhak ka vitran (kaale rang mein)

meindhak ubhayachar varg ka jantu hai jo paani tatha jameen par donon jagah rah sakta hai. yeh ek sheetarakti praani hai arthaat iske shareer ka taapamaan vaataavaran ke taap ke anusaar ghatata ya badhta rahata hai. sheetakaal mein yeh thandak se bachane ke liye pokhar aadi ki nichli satah ki mitti lagbhag do foot ki gaharaai tak khodakar usi mein pada rahata hai. yahaaain tak ki kuchh khaata bhi naheen hai. is kriya ko sheetanidra ya sheetasushuptaavastha kehte hain. isi tarah ki kriya garmi ke dinon mein hoti hai. greeshmakaal ki is nishkriya avastha ko greeshmasushuptaavastha kehte hain.

meindhak ke chaar pair hote hain. pichhle do pair agale pairon se bade hotein hain. jiske kaaran yeh lambi uchhaal leta hai. agale pairon mein chaar-chaar tatha pichhle pairon mein paaainch-paaainch jhilleedaar uaingaliya hoteen hain, jo ise tairane mein sahaayata karti hain. meindhakon ka aakaar 9.8 mileemeetar (0.4 inch) se lekar 30 senteemeetar (12 inch) tak hota hai. nar saadhaaranat: maada se aakaar mein chhote hote hain. meindhakon ki tvacha mein vishgranthiyaaain hoteen hain, parantu ye shikaari stanapaayi, pakshi tatha saaainpon se inki suraksha naheen kar paati hain.

bhek ya daadur (tod) tatha meindhak mein kuchh antar hai jaise daadur adhiktar jameen par rahata hai, iski tvacha shushk evam jhurreedaar hoti hai jabki meindhak ki tvacha komal evam chikni hoti hai. meindhak ka sir tikona jabki tod ka arddh-vruttaakaar hota hai. bhek ke pichhle pair ki anguliyon ke beech jhilli bhi naheen milti hai. parantu vaigyaanik vargeekaran ki drushti se donon bahut had tak samaan jantu hain tatha ubhayachar varg ke enura gan ke antargat aate hain. meindhak praay: sabhi jagahon par paae jaate hain. iski 5000 se adhik prajaatiyon ki khoj ho chuki hai. varsha vanon mein inki sankhya sarvaadhik hai. kuchh prajaatiyon ki sankhya teji se kam ho rahi hai.

vikimeediya kaumans par medhak se sambandhit media hai.

• AmphibiaWeb
• The Whole Frog Project - Virtual frog dissection and anatomy
• Disappearance of toads, frogs has some scientists worried - San Francisco Chronicle, April 20, 1992
• Recording UK frogspawn sightings - Springwatch 2006
• Frogwatch USA Volunteer frog and toad monitoring program by National Wildlife Federation and USGS, includes links to frog calls of the United States
• Amphibian photo gallery by scientific name - features many unusual frogs
• Scientific American: Researchers Pinpoint Source of Poison Frogs' Deadly Defenses