Ladoga hatimi (Ringed Seal): description, mazauninsu

The lake na wannan sunan rayuwa da kuma jinsi Ladoga hatimi. Sha'awa, wannan shi ne kawai mazauninsu. Amma like - jinsunan ga abin da Ladoga ringed hatimi - marine dabbobi. Ta yaya suka gudanar da rayuwa, a sabo ruwa da kuma yadda suka sami kansu a cikin wannan lake?

Game 11 000 da suka wuce, a lokacin da kankara shekaru ƙare, ruwan matakin ya canza. Kamar wancan ne wadannan dabbobi masu shayarwa kama a sabo ruwa.

Ladoga hatimi. description

Wannan dabba yana da wani sunan. Haka kuma an kira da ringed hatimi, saboda Jawo ne m tare da duhu zobba a kan shi. Ciki haske. A waje tsarin da Ladoga ringed hatimi kama da kundin tsarin mulkin kasar ta zumunta, shi ya bambanta daga da su zuwa ga kananan size. A tsawon shi ne 1.2 mita da kuma yin la'akari 50-80 kg. Seal ya dubi mai da takaice. Yana yana da kusan babu wuyansa. The shugaban ne kananan da kuma dan kadan flattened. Iko Hind flippers taimaka matsawa biyu a ruwa da kuma a kan ƙasar. Ji da kuma jin warin ta ban mamaki. Ladoga like rayuwa game 30-35 shekaru, da kuma ci gaban ya zo ga ƙarshe, a shekaru 10.

Wadannan dabbobi masu shayarwa ciyar a kan kananan kifi da crustaceans, wanda jiki tsawon bai wuce 20 cm. A menu hada perch, roach, smelt da whitefish. Just a rana wannan predator daukan 3-4 kilo na kifi. A lokacin rani, lokacin da yana da lokaci zuwa Molina, Ladoga like fi son arewa bakin tafkin, musamman a tsibirin na Valaam tarin tsiburai: Ruhu Mai Lembos, Fox, Cross da sauransu. A lokacin warmer watanni, su son shirya wani rookery a kan kankara, su lambar a wuri guda zai iya isa 600-650 mutane. Kuma a cikin hunturu da shi zuwa ga liking na kudancin, yammaci da kuma gabashin gaba.

karkashin ruwa rayuwa

Ladoga sanya hãtimin rufi a cikin ruwa, ko a cikin sanyi, jin mafi alhẽri daga kan ƙasar. Its elongated jiki ne musamman maida shi musamman domin aiki iyo. Bugu da kari ga wannan taimake ta flippers. Daskare ba a lokacin farin ciki Layer subcutaneous mai da cewa gashi ya aikata ba rigar. Deftly dived zuwa zurfin 300 mita, da hatimin iya rike da ya numfashi for 40 minutes. Wannan shi ne yiwu godiya ga cewa ita jiki ne iya rage gudu da metabolism, kuma, saboda haka, oxygen tana bukatar kasa. Kuma m jinin samar muhimmanci gabobin: kwakwalwa, hanta da kuma kwakwalwa. Jimiri hatimi damar da shi zuwa taso kan ruwa da dama dubun kilomita a gudun 20 km / h.

Yadda za a haifa

Domin dabbar ta hanyar canjin waɗannan dabbobi zabi da sanyi kakar - Janairu zuwa Maris. By aiwatar da haihuwa suna shirye su isa 6 shekara. A maraƙi aka haife kuma idan akwai snow. Yawanci, da ringed hatimi ya haifa jariri. Tã kawai 4 kg, da kuma jiki yana da tsawon 0.6 mita. Ya Jawo ne fari, don haka shi ne kasa m to da yara: Foxes da Wolves.

A uwa ciyarwa da shi tare da madara ga 1.5-2 watanni, ta madara ne mai cewa jariri ne samun rana ta 1 kilogram. Bayan haka, ya fara ci da kansu. Seal kaunar rugujewa kankara floes. A cikinsu ta sami manholes da kuma shirya gidaje ga ƙarshe. A lokacin daukar ciki, ta sa 'yan mafaka a cikin kankara, suna da wani rami ta hanyar abin da za ka iya sauka a cikin ruwa da kuma numfashi ramukan. Fita zuwa surface a cikin irin wannan "gidan" ba samuwa, haka matasa suna kare daga harin da waje makiya. Sa'ad da lokaci ya zo, su ne kawai kamar mahaifiyarta saukar da manhole a cikin ruwa.

me ya sa bace

A cikin 'yan shekaru, dabba, wanda yawan shi ne ragewa hanzari, kuma ya zama na Ladoga ringed hatimi. The Red Littafi na Rasha ya riga ya hada da shi a jerin. Wannan shi ne yafi saboda halakar mutum. Tun da farko a Lake Ladoga rayu 20-30 dubu mutane, kuma a halin yanzu rayuwa a cikin shi kawai 2-3 dubu like. Skin, mai, nama na wannan dabba ne mai muhimmanci, don haka farauta domin shi, amma ba a kan wani m sikelin.

A cikin karni na 20th, wargajewa na like ba dubawa, kuma a yau shi ya kasance wani jihar kifi dubawa. Saita kama kifi iyaka. Halakar like barata ta da cewa shi ya ci up m jinsunan kifaye a cikin tafkin. Kuma wannan duk da cewa masana kimiyya sun tabbatar da cewa saboda da kananan rami hatimi a Lake Ladoga ba zai iya ci manyan ganima, kuma, saboda haka, yawan, misali, kifi ba a rage saboda shi. Abokan adawar jayayya da cewa wadannan dabbobi masu shayarwa ci kifi kama a raga, kamar yadda ba su bukatar hadiye shi, amma kawai don yaga kashe wani yanki daga abin da suka yi wani lokacin fun.

ƙarin dalilai

Ladoga like an kashe ma saboda sarƙafewa a ciki karfi networks shigar kama kifi, da wanda ba zai iya fita a kan nasu. Bugu da kari, da hujjar cewa mutum gaban a kan lake ba su damuwa da kuma haddasawa damu cewa ma ba zai amfana wa karuwa a cikin lambobin. Wani factor influencing da raguwa a yawan Ladoga hatimi - da ƙazantar da lake ta najasa. Da zarar shi ya fara samun sharar gida, wadannan dabbobi masu shayarwa sun zama lafiya fiye da sau da yawa, sun rage rigakafi. Ladoga Lake iya zarar tsira da muhalli bala'i.

Ko yana da lokaci zuwa dakatar?

Ya ɗauke lake pollutant, mai guba mahadi, nauyi karfe salts ya kasance gudana shekaru da dama. Bugu da kari, da ruwan samun gurbata hazo. A kasa na Lake Ladoga samu shafukan da ba su rayu kwaro. Wasu kifi kasance a kan gab da nau'i nau'i, misali, aka jera a matsayin miyagun Atlantic sturgeon. Wannan yana nufin a rage daga cikin ikon a rufe da kuma sauka a hankali nau'i nau'i daga yunwa ba. Shi ne kuma sharri ne a gare dabbobi da kuma Warming kuma, Saboda haka, rage daga cikin snow murfin. Bayan duk, suna bukatar kankara floes, akalla domin ba da damar mambobi a boye da kuma tsari da matasa da kansu.

matakan

Masana kimiyyar halitta da sha'awar a ceton da rai na Ladoga ringed hatimi, halitta a Repino Leningrad yankin ceto sabis pinnipeds. Wannan shi ne Rasha ta farko da irin wannan shiri. Masana kimiyya amfani da kwarewa da kuma ilimi don taimaka a wannan dabba bace. Iya zama a karkashin kulawa da cibiyar ba kawai Ladoga ringed hatimi, da kuma wani dangi na ta a cikin matsala. A cikin hunturu shi pinnipeds tare da mai illa thermoregulation. Domin su, musamman aiki batu dumama. Animals iya zama a nan har a wani lõkaci. Domin su sanye take da mutum kwalaye. Staff zaune a cikin wani musamman tsara wuri a gare shi. Dabam, shirya fodder ga dabbobi. Don bugun sama da karbuwa daga pinnipeds gina pool.

Mutane suna sane da matsalar da zai yiwu bacewar fada domin adana daga cikin hatimi. Yawan ziyara ga wuraren like huta, rage kama kifi a cikin lake. Ko da yake ba shi yiwuwa a hana mutane zuwa sha'awan rare jinsin dabbobi a cikin halitta mazauninsu. Babban abu ne mu tuna cewa domin tsira, da Ladoga ringed hatimi na bukatar wani na musamman da hankali ga mutum da kuma m tsarin kula da batun na co-zama a wannan duniyar tamu.