Ma dolphin amtsinje ndinu mbali ya banja la anamgumi okhala ndi mano. Banja la dolphin amtsinje Amakhala ndi dolphin amtsinje wa Amazonian, Chinese, Ganges ndi Lapland. Tsoka ilo kwa aliyense, China anamgumi mtsinje sakanakhoza kupulumutsidwa: mu 2012, nyamazo zinapatsidwa udindo wa "kutayika".
Akatswiri a sayansi ya zamoyo amakhulupirira kuti chifukwa cha kutha kwawo kuli chifukwa cha kupha nyama, kutulutsa zinthu zamankhwala m'madzi, komanso kusokoneza chilengedwe (zomanga madamu, madamu). Nyama sizimatha kukhala m'malo opangira, chifukwa chake sayansi siyidziwa mitundu yambiri yazomwe idakhalapo.
Kufotokozera ndi mawonekedwe amtsinje wa dolphin
Mtsinje wa Amazon cholemba chenicheni pakati pa mamembala amtsinje dolphin: kulemera kwa anthu okhala mumtsinje kuyambira 98.5 mpaka 207 makilogalamu, ndipo kutalika kwake kwa thupi kuli pafupifupi 2.5 m.
Kujambulidwa ndi dolphin yamtsinje wa Amazonia
Chifukwa chakuti nyama zimatha kujambulidwa mumdima wonyezimira, wakumwamba kapenanso pinki, amatchedwanso Ma dolphin oyera amtsinje ndipo pinki dolphins.
Mthunzi wakumunsi (mmimba) ndi wowala pang'ono kuposa mtundu wa thupi. Mphunoyi imakwezedwa pang'ono pansi, imafanana ndi mlomo, mphumi mwake ndi lokulungika komanso lotsetsereka. Pamlomo pali tsitsi lokhala lolimba, lomwe limapangidwa kuti ligwire ntchito yovuta. Maso ndi achikasu achikuda, ndipo m'mimba mwake sichipitilira 1.3 cm.
M'kamwa muli mano 104-132: omwe ali kutsogolo ndi opangidwa ndi kondomu ndipo adapangidwa kuti agwire nyama, kumbuyo kwawo kumakhala kokwanira kugwira ntchito yotafuna.
Chinsinsicho kumbuyo kwa mtsinje wa Amazonia dolphin chimalowetsa phirilo, kutalika kwake kumakhala masentimita 30 mpaka 61. Zipsepsezo ndi zazikulu komanso zokulirapo. Nyama zimatha kudumpha kupitirira mita imodzi kutalika.
Gangetic dolphin (susuk) ndi imvi yakuda, ndikusandulika imvi pamimba. Kutalika - 2-2.6 m, kulemera - 70-90 makilogalamu. Mtundu wa zipsepse sizosiyana kwenikweni ndi zipsepse za dolphin za Amazonian.
Mphunoyo ndi yolitali, kuchuluka kwa mano ndi awiriawiri 29-33. Maso ang'onoang'ono sangathe kuwona ndipo amakhala ndi magwiridwe antchito. Ma dolphin aku Ghana adatchulidwa kuti ndi nyama zomwe zatsala pang'ono kutha ku Red Data Book chifukwa anthu ake ndi ochepa kwambiri.
Pachithunzicho, gulu la mtsinje wa dolphin
Kutalika kwa ma dolphin a Laplatian ndi 1.2 -1.75 m, kulemera kwake ndi 25-61 kg. Mlomo uli pafupifupi gawo limodzi mwa magawo asanu ndi limodzi a kutalika kwa thupi. Chiwerengero cha mano ndi zidutswa 210-240. Chodziwika bwino cha mitundu iyi chagona mu mtundu wake, womwe uli ndi bulauni wonyezimira, komanso tsitsi lomwe limatuluka akamakula ndimakhalidwe a dolphin. Zipsepse zimafanana ndi makona atatu mawonekedwe. Kutalika kwa kumapeto komwe kumakhala kumbuyo ndi 7-10 cm.
Ma dolphin amtsinje ali ndi vuto losaona bwino, koma, ngakhale zili choncho, ali okhazikika mu dziwe chifukwa chakumva bwino komanso kuthekera kwawo kuphunzira. Mwa anthu okhala mumtsinje, mafupa amtundu wa khomo lachiberekero samalumikizana, zomwe zimawalola kuti atembenuzire mutu wawo kumbali yolondola ya thupi. Ma dolphin amatha kufikira liwiro la 18 km / h, mwanjira zachilendo amasambira pa liwiro la 3-4 km / h.
Nthawi yokhalamo pansi pamadzi imakhala pakati pa 20 mpaka 180 s. Pakati pakumveka kotulutsidwa, munthu amatha kusiyanitsa kudina, kulira mokweza, kukuwa, kulira. Phokoso limagwiritsidwa ntchito ndi dolphins polumikizana ndi abale, komanso kuchita echolocation.
Mverani mawu amtsinje dolphin
Moyo wamtsinje wa dolphin komanso malo okhala
Masana dolphins amtsinje akugwira ntchito, ndipo usiku utayamba amapuma m'malo osungira, komwe kuthamanga kwaposachedwa kumakhala kotsika kwambiri kuposa komwe kumakhala masana.
Kodi dolphins amtsinje amakhala kuti?? Malo a Amazonian dolphins amtsinje ndi mitsinje ikuluikulu yaku South America (Amazon, Orinoco), komanso mitsinje yawo. Amapezekanso m'madzi ndi m'malo pafupi ndi mathithi (kumtunda kapena kutsika kwa mtsinje).
Pakakhala chilala chotalika, pomwe madzi m'madamu amatsika kwambiri, ma dolphin amakhala m'mitsinje ikuluikulu, koma ngati madzi ochokera nthawi yamvula amakhala ochuluka m'misewu yopapatiza, kapena pakati pa nkhalango yodzaza madzi kapena chigwa.
Ma dolphin aku Ghana amapezeka m'mitsinje yakuya ku India (Ganges, Hunli, Brahmaputra), komanso mitsinje ya Pakistan, Nepal, Bangladesh. Masana, imadumphira pansi mpaka mita 3, ndipo ikabisala usiku imapita pansi pang'ono posaka nyama.
Ma dolphin a Laplat amapezeka m'mitsinje ndi m'nyanja. Amakhala pafupi ndi gombe lakum'mawa kwa South America, pakamwa pa La Plata. Kwenikweni, dolphins amtsinje amakhala awiriawiri kapena m'magulu ang'onoang'ono, omwe amakhala osapitilira theka ndi theka. Pakakhala chakudya chochuluka, ma dolphin amatha kupanga ziweto kangapo.
Kudyetsa dolphin kudyetsa
Amadyetsa nsomba, nyongolotsi ndi molluscs (nkhanu, nkhanu, squid). Mitsinje momwe dolphin amakhala ndimatope kwambiri; nyama zimagwiritsa ntchito echolocation kuti zipeze chakudya.
Ma dolphin oyera amtsinje amagwira nsomba ndi mphutsi zawo, ndikuzigwiritsanso ntchito ngati chida chogwirira nkhono kuchokera pansi pa dziwe. Kuti atenge nyama, amapita kumagawo amtsinjewo osaya.
Amakonda kusaka okha kapena m'magulu ang'onoang'ono. Ma dolphin amatenga nsombayo ndi mano awo am'mbuyo, kenako ndikuyiyika kumbuyo, komwe kumameta mutu kaye nyama ikangoyimeza, kuphwanya otsalawo. Nyama yayikulu ikukhadzulidwa, ndikuluma mutu poyamba.
Kuberekana ndi kutalika kwa ma dolphin amtsinje
Kutha msinkhu dolphins amtsinje imachitika pafupifupi zaka 5 zakubadwa. Mimba imakhala miyezi 11. Mwanayo akangobadwa, nthawi yomweyo mkaziyo amamutulutsa m'madzi kuti ayambe kupuma.
Kutalika kwa mwana wamphongo ndi 75-85 cm, kulemera kwake ndi pafupifupi 7 kg, thupi limakhala loyera. Pakangobereka ana, amuna amabwerera kumitsinje, pomwe akazi omwe ali ndi ana amakhalabe m'malo (mumayendedwe kapena zigwa zomwe zidasefukira madzi atakwera).
Kujambula ndi dolphin wakhanda
Potengera malo oterewa, akazi amateteza ana awo kusowa chakudya, zolusa, komanso ku nkhanza za amuna achilendo. Mbewuyo imakhala pafupi ndi mayi mpaka zaka zitatu.
Si zachilendo kuti mkazi adzakhalanso ndi pakati osamaliza njira yoyamwitsa. Kutha pakati pa kukwatira kumatha kukhala kwa miyezi 5 mpaka 25. Khalani ndi Moyo dolphins amtsinje zosaposa zaka 16 - 24.
