Ziphuphu zakumaso: nsomba ndi kudabwitsa

European njoka yam'madzi - mmodzi wa zinthu zodabwitsa kwambiri nsomba zimene kokha pa dziko lathuli. Mu moyo wake onse, akukumana metamorphosis ambiri chodabwitsa ndi kugonjetsa mtunda wotero kuti anamanganso awo ndi chodabwitsa. Mukhoza kuyamba ndi chakuti eels - nsomba moyo mu madzi atsopano, koma zimasangalala m'nyanja.

Padziko lonse iwo yopita kwa izi mu Nyanja Sargasso. Monga aswa mphutsi wamphamvu nyanja panopa amanyamula kuti kugombe la Europe. Amazipanga yaitali ndi oopsa ulendo kumatenga zaka zitatu.

Monga gombe la Europe ndi ku Asia ugorki potsiriza kufika masentimita asanu asanu ndi atatu yaitali, koma pa izi malekezero kovuta msewu. Chilichonse, koma eels - nsomba kugonjetsedwa kwambiri ndiponso zogwirizana tinkachita awo.

Atafika ku mtsinje, kenako anaukitsidwa iwo ku malo kumene makolo awo anakhala. Pano, iwo ndi moyo mpaka zaka 25, ndipo kenako abwereza njira ya makolo awo pa Nyanja Sargasso. Kugonjetsa njira lamavutoli ndipo sioneka, ndipo nthawi zambiri amakakamizidwa kukwawa pakati pa mitsinje mpaka makumi makilomita!

Ndipo zonse izi - chifukwa cha msewu pa makilomita zikwi zisanu ndi spawning, kenako adzafa ... Mwachidule, ziphuphu - nsomba ofanana kwambiri pa mfundoyi kuti nsomba, koma wawo amapita mosemphanitsa.

Mwa njira, iwo ali wodzala ndi nyama chokoma ndi amtengo kuyambira wakale ndiye. Ngakhale pa maphwando a kwambiri Aleksandra Makedonskogo izo chinali alendo wolemekezeka kwambiri. Ngakhale zili choncho, asayansi sanapereke zina funso lakuti: "Kodi izi zimasokoneza nsomba, ngati mmodzi wa iwo yomwe anapeza palibe mazira kapena mkaka"?

Ndiye Aristotle ankati eels - nsomba amachokera mu matope m'mphepete mwa nyanja!

Oddly zokwanira, koma lingaliro la woganiza kwambiri anali mbalume ... pa zaka ziwiri. Ndipo okha 1694 wamkulu Italy zachilengedwe ndi zachilengedwe Francesco Redi kuika patsogolo kopanda zolondola.

Iye anakhala zaka zingapo kuonera eels. Redi adawatsata ndipo tinapeza kuti zolengedwa zodabwitsa kupeza mu mapaketi ndi kusambira pansi mitsinje kwa nyanja. Yolondola: onse njoka yam'madzi nsomba (kumene anapeza ambiri) nthawi mbisoweka ku malo ena, koma kusinthasintha chiwerengero, palibe mmodzi anapereka chidwi chirichonse.

Kumene, ochepa anamukhulupirira. Ndipotu zachilengedwe sanali kupereka umboni wokwanira!

An chitsimikiziro zotsalira za kungoganizira molimba n'zimene zinachitikira katstsa, wina Italy katswiri ndi njonda. Pambuyo zaka 200 pambuyo chiphunzitso Redi, iye ndaweza mu Gulf wa Messina ndi zachilendo kwambiri nsomba, zomwe mpaka palibe amene anafotokoza.

"A mtundu watsopano wa" dzina lake Leptocephalus. Mu 1897, angapo nsomba anaikidwa thanki nsomba pamwepo. Patatha chaka kuyembekezera anapeza odabwitsa: thupi leptotsefalov adzafupikitsidwa centimeter anataya yeniyeni tsamba woboola pakati, kukhala ziphuphu zakumaso vulgaris!

Komabe, pali osati madzi oyera mitundu. Makamaka, nsomba njoka yam'madzi nyanja Europe. Iye amalima mpaka kutalika mamita atatu ndi angafikire yolemera makilogalamu 120!

Mwa njira, ndi kubalana a mitundu akadali osati kwenikweni kudziwika. Amadziwika kuti spawning eels kutsikira kuya kwambiri. kuswana malo - Gibraltar. Koma palibe mfundo za malo enieni a caviar buttonhole ndi ndondomeko likadali palibe akufotokozedwa.