Sunanta teku Giwa samu godiya ga aikin da ke sama da bakin bakin, wanda yayi kama da akwatin giwa. Gangar jikin ta ta tsawon santimita 30 tana girma a cikin maza kusa da shekara takwas, a mata aikin ba ya nan gaba ɗaya.
Gaskiya mai ban sha'awa game da hatimin giwa ita ce mallakar akwatin don ƙara girmanta har zuwa 60-80 cm yayin motsawar jima'i. Maza suna girgiza ayyukansu kamar na proboscis a gaban masu fafatawa da fatan tsoratar da su.
Bayani da fasali na tambarin giwa
Game da marine giwaye masu bincike sun tattara bayanai masu yawa. Kunnawa hoton giwar hatimi yayi kama da hatimi: jikin dabba yana da haske, kai karami ne mai girman gaske tare da akwati wanda ake samun vibrissae a kansa (waswasi da halayya mai karfi), kwayar idanun suna da siffa wacce aka daddafe kuma ana zana su a cikin launi mai duhu, an maye gurbin gabobin da kafafu wadanda aka sanye su da dogayen kafa har zuwa 5 cm.
Hannun giwaye ba su dace da rayuwa a kan ƙasa ba, tun da jikinsu mai ƙiba yana hana su motsi: mataki ɗaya na babban dabba bai wuce kimanin inci 35 ba. Saboda lalacinsu, suna zubewa a bakin tekun kusan kowane lokaci kuma suna bacci.
Hoton hatimin giwa ne
Barcinsu yana da zurfi sosai har ma suna yin minshari, masana kimiyyar halittu a lokacin da suke hutawa har ma sun iya auna zafin jiki da bugun zuciya. Wani abin ban sha'awa game da hatimin giwa shine ikon dabbobi suyi bacci a karkashin ruwa.
Wannan tsari yana faruwa ne kamar haka: mintuna 5-10 bayan bacci, kirjin ya fadada, sakamakon haka karfin jikin ya dan ragu kadan kuma a hankali yake shawagi.
Bayan jikin ya kasance a saman jiki, hancin hancin ya bude sai giwar ta yi numfashi na kimanin minti 3, bayan wannan lokacin sai ta sake nutsewa cikin layin ruwan. Idanuwa da hancin hancin suna rufe yayin hutun karkashin ruwa.
Hatimin giwayen na iya nutsar da ruwa yayin bacci
Mutanen da suka fara haɗuwa da wannan dabba suna da tambaya: Yadda hatimin giwa yake? Hannun giwayen mata sun fi mata girma sosai. Idan tsawon jikin namiji ya kasance kusan 5-6 m, nauyin giwa nauyi - zai iya kaiwa tan 3, tsayin jikin mata kawai 2.5 - 3 m, nauyi - kg 900. Wannan nau'in giwayen yana da halayyar furfura mai kaurin toka.
Hannun giwayen da ke zaune a cikin Arctic sun fi girman dangi fiye da danginsu na arewa - kimanin nauyin tan 4 a nauyi, tsawonsa ya kai mita 6, kuma gashinsu launin ruwan kasa ne. A cikin ruwa, dabbobi na tafiya cikin tsananin sauri har zuwa kilomita 23 / h.
Hoton hatimin giwar arewa ne
Giwa hatimin rayuwa da mazauninsu
Alamun giwaye suna amfani da mafi yawan lokacinsu a cikin asalin ƙasar - ruwa. A kan ƙasa, an zaɓa su ne kawai don ma'adinai da narkar da su. Lokacinsu a bayan kasa bai wuce watanni 3 ba.
Wurare, inda tambarin giwa yake ya dogara da nau'in su. Ya wanzu Tambarin giwar Arewazaune a gabar tekun Arewacin Amurka, da hatimin giwar kudu wanda masaukin sa yake Antarctica.
Dabbobi suna rayuwa ta kadaici, suna tarawa kawai don ɗaukar zuriya. Yayin da suke kan tudu, giwayen giwayen suna rayuwa ne a bakin rairayin bakin da aka watsa da tsakuwa ko tsakuwa. Rikicin dabbobi na iya samun mutane sama da 1000. Hannun giwaye suna da kwanciyar hankali, har ma da ɗan dabbobin phlegmatic.
Giwa hatimce abinci
Hannun giwaye suna cin abinci akan kifaye da kifi. A cewar wasu bayanai, tambarin giwa, wanda ya kai kimanin mita 5, yana cin kilogiram 50. kifi
Saboda girman gininsa, iska mai yawa tana makalewa cikin babban jini, wanda ke taimakawa like giwayen nutse zuwa zurfin kusan mita 1400 don neman abinci.
Yayin zurfafawa cikin ruwa, ayyukan dukkan mahimman gabobi suna raguwa cikin dabba - wannan aikin yana rage amfani da iskar oxygen sosai - dabbobi suna iya riƙe iska har zuwa awanni biyu.
Fatar giwar tana da kauri kuma an rufe ta da gajeren gajere gajere. Dabbar tana da adadi mai yawa, wanda aka ɗan ƙona a lokacin saduwa, lokacin da ba sa cin abinci sam.
A CIKIN Alamar giwar Antarctica shiga lokacin dumi dan neman ganima. A lokacin ƙaura, suna iya rufe hanyar da ke kusan kilomita 4800.
Sake haifuwa da tsawon rayuwar hauren giwa
Maza sun isa balaga a shekaru 3-4. Amma a wannan shekarun suna da wuya suyi aure, saboda har yanzu basu da karfin da zasu kare hakkin yin aure da wasu Yan Scythians. Maza suna samun isasshen ƙarfin jiki tun suna da shekaru sama da shekaru takwas.
Lokacin da lokacin lokacin daddawa ya zo (kuma wannan lokacin daga watan Agusta zuwa Oktoba ne don hatimin giwar kudu, Fabrairu don launin toka giwa mai ruwan toka), dabbobin suna taruwa cikin manyan kungiyoyi, inda mata 10 zuwa 20 ke faduwa ga kowane namiji.
Ana gwabza kazamin fada tsakanin maza don haƙƙin mallake harem a tsakiyar mulkin mallaka: maza suna girgiza gajeren akwatinsu, suna ruri da ƙarfi kuma suna rugawa ga abokan gaba don yin rauni da yawa kamar yadda zai yiwu tare da taimakon kaifi.
Duk da yawan jikinsu, a cikin faɗa, maza kusan na iya ɗaga jikinsu gaba ɗaya, saura sama da ƙasa kawai suna tsaye a kan jela ɗaya. Pushedananan samari maza an tura su zuwa gefen mulkin mallaka, inda yanayin yanayin mata masu aure ya fi muni.
Bayan an kafa maigidan, tuni mata masu juna biyu ke haihuwar cuba thatan da aka ɗauki cikin shekarar da ta gabata. Ciki yana kasancewa ƙasa da shekara (watanni 11). Girman jikin jariri sabon haihuwa shine mita 1.2, nauyi yana da kilogiram 50.
Jikin kuron an lullube shi da furfura mai ruwan kasa mai laushi, wanda ke zubar da shi wata ɗaya bayan haihuwa. An maye gurbin launin ruwan kasa mai launin toka mai launin toka mai duhu mai duhu. Bayan haihuwar 'ya'ya, mace ta kawo kuma ta ba shi madara na tsawon wata guda, sannan kuma ta sake saduwa da namiji.
A ƙarshen wata, matasa suna zama a bakin teku har tsawon makonni biyu, yayin da ba sa cin komai, suna barin kitsen da ya taru a baya. Ana tura zuriya zuwa ruwa wata biyu bayan haihuwa.
Kifin Whale da farin kifayen kifayen sune manyan abokan gaba na hatta giwayen matasa. Tun da jima'i like giwayen tsarin yana da tsanani (fada, “shawo” mace), yawancin ‘ya‘ yan sun mutu saboda gaskiyar cewa an murkushe su kawai.
Tsawon rayuwar maza ya kai kimanin shekaru 14, na mata - shekaru 18. Wannan bambancin ya samo asali ne daga yadda maza suka sami munanan raunuka a yayin gasar, wanda hakan ke kara cutar da lafiyar su baki daya. Yawancin lokaci, raunuka suna da ƙarfi sosai har dabbobi ba za su iya murmurewa daga gare su ba kuma su mutu.
