Arewaci da Kudanci giwa hatimi

Elephant Seals - yana da matukar ban sha'awa dabbobi. Su ne dumin jiki da kuma dabbobi masu shayarwa, suna daidai saba da rayuwa a cikin ruwa - maimakon na clutches na fins, jiki siffar da aka streamlined, mafi subcutaneous mai Layer ba da damar zuwa daskare a ruwan sanyi, m fata , da kuma m gashi kuma taimakawa wajen kiyayewa da zafi - amma a lokaci guda yana da muhimmanci kana bukatar ka kashe wani lokaci a kan ƙasar, inda su ne m, kuma m mai maza.

Bugu da kari wa salon na wadannan dabbobi ne musamman mai ban sha'awa da kuma asalin sunan su jinsunan. Bayan duk, kalmar "giwa" da ke sa mafi daga cikin tarayya, tare da wani abu babbar kuma majestic, amma real giwa like kusan kada ku ƙẽtare size na hatimi. Me wadannan funny kadan dabbobi samun su da sunan?

A gaskiya, da giwa da aka haka suna ba saboda m size, amma saboda fata Musulunci, located a kan fuskar dabba, da kuma kama wani akwati. Wannan shi ne dalilin da ya sa bayanin irin bayanai game da giwa giwa ƙasar ne kusan m. Wannan "akwati" ba sosai manyan - game da 10 santimita - amma a lokacin da dabba ne fuskantar wani lokaci na wani tunanin danniya iya ƙara.

A yanayi akwai iri biyu giwa: arewa da kuma kudu. Babban bambancin dake tsakanin wadannan nau'o'i guda biyu ne su halitta mazauninsu da kuma masu girma dabam.

Northern giwa zaune a gabar yammacin kasar of America, kuma da yawa jihar bakin teku jihohin la'akari da shi da dabba janye da kuma amfani da shi don jawo hankalin masu yawon shakatawa. Amma shi ne yanzu da cewa wadannan dabbobi suna da kariya ta shari'a.

A baya ma, kuma sosai kusa, wadannan dabbõbi damƙar yanka dayansu, kuma ta karshen karni na ashirin da suka kusan tafi. Duk da haka, da zaran giwa like da aka ayyana a kare jinsin, su yawan ya karu sharply.

Girman wadannan dabbobi ne ba sosai manyan: Shin mazan iya auna har zuwa 2.7 ton, da kuma nauyin da mace - kawai 900 kg.

Mazauninsu kudancin giwa ne yafi girma: shi kara zuwa tekun na Antarctica, New Zealand, Patagonia, kudancin Afrika da kuma Australia. By girman kudancin giwa hatimi ne ma da gaba da arewacin takwaransa: Shin mazan iya auna har zuwa 3.5 tons, tsawon - 6 mita, mãtan nauyi - 1.5 tons, tsawon - 3 mita.

The damar waɗannan dabbobi ne sosai high: suna iya tafiya ba tare da iska for game da minti 40, ruwa zuwa zurfin rabin mil da iyo ba tare da sauran game da 5000 kilomita.

Ga sauran, wadannan biyu jinsunan giwa like suna kama, suna kusan iri daya salon, wannan tãyar da su matasa.

Saboda haka, duk Elephant Seals - da yara, suka ciyar a kan kifi da squid kama - ne m a kan ƙasar, a ruwa, da waɗannan dabbobi juya a cikin sauri da kuma rashin mafarauci. A tsawon rayuwar jama'a giwa - 20 years.

Babba lokaci na rayuwarsa giwa like ku ciyar a cikin ruwa, farauta, cin abinci, da kuma gwamnatin. Don shakata, suka ja jiki zuwa ga tudu, inda kwat da wando maturation. Amma a cikin ma'abota kakar a filin saba ja da ƙarfi maza shirya wadannan gasa - don haka suka kafa matsayi. A wannan lokacin, na sirri ƙarfi da matukar muhimmanci ga giwa like, saboda mafi abokan adawar ci namiji ne, da more shi za a harem - da karfi zai iya tara a kusa da shi da ɗari mace.

Bayan gina matsayi na maza Dede tare da mãtan, ciki zaunanniya watanni 11. A mako biyu kafin haihuwar mace iyo a kan su rookery inda kuma bã ta haihuwa, to daya maraƙi.

zurriyar ilimi a marine giwaye ne kawai mace. Inna ciyarwar da jariri don a watan da ta madara, ba za departing daga gare shi, kuma cin kawai tara mai a shekara. Af, da madara da waɗannan dabbobi ne mai tsakanin dabbobi masu shayarwa - game da 50% m. A watan daga baya, to, uwa ke a search na abinci da kuma ko da yaushe bar ta baby, wanda a yanzu ya tsira a kan nasu.

A watan ciyar a kan nono madara, matasa giwa hatimi girma karfi da kuma tara babban adadin mai, wanda damar da su zuwa tsira a watan farko na m rai. Bayan shekaru biyu, matasa dabbobi isa jima'i balaga, kuma kansu zama iyaye zuwa wani sabon ƙarni na marine giwaye.