Lamprey River - wani irin predator-m cewa an kiyaye su daga zamanin da

Lamprey River nasa ne a aji na kifi cyclostomes (Cyclostomata), lampreys subclass (Petromyzones). Yana zaune a cikin kõguna. A Rasha, yana da kasuwanci darajar.

Shi yana da wani elongated, maciji-kamar jiki ne game da 40 cm tsawo, an rufe shi da mucous danda fata. A launi ta duhu-m tare da wani ƙarfe Sheen. Bakinka prisasyvatelnoy adana a cikin hopper, gefuna wanda aka located a kan harshe da kuma hakora. Jaws ba. A saman shugaban yana unpaired hanci bude. Ta idãnunsu suka kasance uku, biyu daga waɗanda aka kullum ci gaba, da kuma na uku Mai gani ne kawai haske, saboda babu ruwan tabarau.

Numfasawa da aka bayar da bakwai nau'i-nau'i daga branchial bags located a gefuna da jiki da kuma bude m. A kwarangwal kunshi guringuntsi. Yana gudãna, lankwasawa da jiki, kusan kamar maciji. Biyu dorsal fins (da wuya daya), caudal filafilin kifi ravnolopastny, suna duk da goyan bayan cartilaginous haskoki. Guda biyu fins yana da wani kogi lamprey. Photo nuna ta da kyau.

Lamprey River ne zuwa kashi da bushing (inhabiting jihar bakin teku wuraren desalinated teku, da kuma spawn a kõguna) da kuma daya kofa (zaune a kõguna).

Lamprey River - wani irin predator da kuma m. Ciyar da tsotsa ga mai ruwa-ruwa occupants ayan kifi by ja su fita daga cikin jiki da kuma jini. Ta gluttonous, daya tsotsa kofin, wanda zai iya wuce kwanaki masu yawa, shi ne iya janye daga wanda aka azabtar da yawa fiye da na da nauyi. Mutane da yawa kifi bayan wannan "tattaunawa" mutu raunukansa, kamar yadda su jini samun abu da cewa ya hana clotting.

A shekara kafin spawning lamprey kogin daina ci. A jikinsa akwai gagarumin canje-canje: rage hanji, salivary gland shine yake mutuwa, dorsal fins an garwaya a cikin daya, mace bayyana a tsuliya filafilin kifi da kuma kafa qwai, da kuma namiji - al'aura papilla da kuma madara. Length da kuma nauyi a duka biyu mata da maza rage-rage.

Propagated kogin lamprey a cikin sassan na kogin da wani gaggãwar halin yanzu da kuma tekun yana da tsakuwa kasa, a zurfin. A lokacin spawning, namiji ya gina wani gida da digging ramuka a cikin kasa. Mace duk lokacin da iyo a kan shi, da taba da ciki na kansa, kamar yadda idan yaba. A karshen shi ne kawai dan kadan zurfafa rami. Lokacin kammala, da mace dora kansa a wani dutse a kusa da gida, da kuma namiji clings zuwa da shi, a hankali wuce tsotsa kofin zuwa gefe da kai, kuma wutsiya wraps a kusa da ita. Products na haihuwa gland an jẽfa lokaci guda. Bayan spawning, da biyu da aka boye a cikin duwatsu da kuma nan da nan ya mutu.

Qwai, wanda shi ne fiye da dubu 20, makonni 2 larvae bayyana kira peskoroykami. Sun yi kama da kananan tsutsotsi yellowish launi. Game da 4 days da suka boye tsakanin duwatsu a kan kogin kasa, da kuma kai 6 mm a tsawon, aka binne a cikin laka. 15 kwanaki larvae bar mafaka da kuma tafi tare da ya kwarara, da tsayawa inda za a binne shi a cikin laka da kuma ci algae sharan. A larval mataki yana game 5 shekaru. Bayan metamorphosis auku adult mataki, a lokacin da m a kan kogin lamprey sauran kogin mazaunan.

Wannan cyclostomes kifi barnatar reacts zuwa ga haske. Bisa cewa ta kama kifi. Masunta saukar a garesu daga cikin kogin karfi fitilu haka cewa tsakiyar wani duhu nassi, kuma shi saita tarko da cewa kama da dama.

A wannan lokacin, kogin lamprey yana da kyau kwarai dandano halaye. Kuma idan ka yi la'akari da cewa da ƙasũsuwa a ta bile kuma hanjinsu ba, to, wannan shi ne cikakken samfurin cewa za a iya ci dukan. Kafin dafa shi ne tsabtace na gamsai da soyayyen a pans, wani lokacin pickled.