
lathenteron parishisht

lathenteron appendix, american brook lamprey, uttari america mein ack aam gair-parjivi lamprey haye. vayaskon mein unake disk jaise munh mein kharaab vikasit daant hotey hain, joe ack mezban seey judane key liye bekaar hotey hain.
varnan.
americi brook lamprey (aeye. bee. ell.) key andey safed, chipchipe aur chhote hotey hain, joe lagbhag maapate hain. jaba way andey seey nikalate hain, tou bhroon bhee chhote hotey hain, joe cumm maapate hain; way safed aur keede jaise hotey hain. ack maheene key bheetar way larva kii upasthiti koo grahan karate hain. sabhi lamprey key larva koo ammocoate kahaa jaataa haye aur jaba chhote aeye. bee. ell. ammocoate mein shareer key saath ack kaali patti hoti haye, tou ack kaali sir kaa kshetra hotaa haye, aur shareer kaa shesh hissa saaf hotaa haye. jaise-jaise unakaa aakar badhata haye, shareer gahara hoe jaataa haye, jaba taka kii amocoate apane adhikatam aakar taka pahunch jaate hain, taba taka yeh gahare bhoore rung taka pahunch jaataa haye. shareer parr kaali patti iss dauran halki honey lagati haye aur adhik paripakva ammocoats mein alag naheen hoti haye. haalaanki, paripakva amocoate key kaudal finn parr ack kaalaa dhabba hoga. aeye. bee. ell. kii kaee dauden honey kii sambhavana haye jinamen sthaan vishisht rung hoe sakata haye. ohiyo mein, puraane amocoate mein ack gahara peela patti hotaa haye joe poori prishthiya satah koo chalaata haye, saath hii saath kaudal finn mein pigmentation bhee hotaa haye. vayask roop mein roopaantaran key dauran, yeh rung kaafee badal jaataa haye. sharad ritu aur sardiyon mein vayask chaandi key hotey hain, lekin prajanan shuru honey parr vasant taka adhik kaale yaa bhoore rung key hoe sakate hain. vayaskon kii peeth kaali, pett peela, pankh peele, poonchh key anta mein ack kaalaa dhabba hotaa haye aur unaki twacha chikani aur chamade kii hoti haye aur binaa taraju key hoti haye. shareer aamtaur parr paripakvata key samay ack chaandi kii upasthiti banaae rakhta haye. vayask aamtaur parr lagbhag lambe hotey hain, halanki yeh atyadhik parivartansheel hoe sakata haye. aeye. bee. ell. aam taur parr saaf, thhande jharanon aur chhoti dhaaraon mein paae jaate hain.
jeevan chakr.
aeye. bee. ell. key ammocoate teen seey saat saal key beach shaiwal aur detreats koo khaate hain, isase pahale kii way yaun roop seey paripakva vayask machhali mein parivartit hoe jaaen. garmiyon key anta aur sharad ritu kii shuruat mein apghatan hotaa haye, vayask sardiyon key anta mein andey key vikas (~ 15 degree celsius) key liye vasant kaa tapman upayukt honey parr andey dene key liye taiyar hotey hain. narr (oun), ack maadaa (oun) kii sahaayata seey, apane munh seey kankad uthaakar aur unhein uthale avasaad key kinare banaane key liye sthanantarit karke chhote ghonsale banaate hain. aksar vayask samoohon mein kaam karate hain, aur sampradayik roop seey ghonsale banaate hain. ghonsale key nirmaan key dauran aur baad mein, chipchipe andey ghonsale mein jamaa hoe jaate hain aur rait aur bajari seey chipak jaate hain. vayask aeye. bee. ell. naheen khaa sakate hain, kyonki unaki aant kaaryaheen hoti haye, aur way kewal chaar seey chhah maheene taka jeevit rahate hain. natijatan, vayask aeye. bee. ell. andey dene key baad marr jaataa haye.