Mary Allen
Anangumi amakhala m’nyanja koma si nsomba. Ndi gulu la nyama zoyamwitsa zimene zimabereka ana amoyo m’madzi. Amapumanso mpweya kudzera m'mapapu awo, koma amathanso kudumpha pansi pamadzi kwa nthawi yayitali osapuma. Akabwera kudzatulutsa mpweya woumawo, nthawi zambiri umatha kuwawona akutukumulanso madzi.
Mutha kudziwa kuti anamgumi ndi nyama zoyamwitsa ndi khungu lawo. Chifukwa alibe mamba. Chinthu chinanso ndi fluke yawo, yomwe imatchedwa caudal fin. Iye amaima chopingasa, pamene zipsepse za shaki ndi nsomba zina zimaima chilili.
Anangumi abuluu ndiye mitundu yayikulu kwambiri ya anamgumi, amakula mpaka 33 metres. Choncho, ndi nyama zazikulu kwambiri komanso zolemera kwambiri padziko lapansi. Mitundu ina monga ma dolphin ndi porpoises amangokulira mpaka 2 mpaka 3 metres.
Kusiyanitsa kumapangidwa pakati pa anamgumi a toothed ndi anamgumi a baleen. Anangumi monga blue whale kapena humpback whale kapena gray whale alibe mano koma baleen. Izi ndi mbale zamanyanga zomwe amagwiritsa ntchito ngati sefa posefa ndere ndi nkhanu zazing'ono m'madzi. Koma anamgumi okhala ndi mano amaphatikizapo anamgumi a sperm, ma dolphin, ndi anamgumi opha anthu. Amadya nsomba, nyama za m’madzi, kapena mbalame za m’nyanja.
Kodi n'chiyani chimaika pangozi anamgumi?
Chifukwa chakuti mitundu yambiri ya anamgumi imakhala m’madzi a kumtunda, imakhala ndi mafuta ambiri. Zimateteza kuzizira. Kale, ankasaka anamgumi chifukwa mafuta awo ankagwiritsidwa ntchito: monga chakudya, mafuta a nyale kapena kupanga sopo. Masiku ano pafupifupi mayiko onse aletsa kupha anamgumi.
Anangumi amakhala m'magulu ndipo amalankhulana pansi pa madzi pogwiritsa ntchito phokoso lomwe limatchedwanso "nyimbo za whale". Komabe, phokoso la zombo zazikulu kapena phokoso la zida za pansi pa madzi zimasokoneza anamgumi ambiri. Ichi ndi chimodzi mwa zifukwa zomwe zimachititsa kuti nsombazi zikhale zochepa.
Choopsa chachitatu chimachokera ku poizoni m'madzi. Koposa zonse, zitsulo zolemera ndi mankhwala amafooketsa anamgumi. Zinyalala za pulasitiki ndizowopsanso chifukwa anamgumi amameza nawo.
Kodi anamgumi amaberekana bwanji?
Anangumi ambiri amakhala okonzeka kukwatirana kamodzi pachaka. Izi zikugwirizananso ndi kusamuka kwawo kudutsa m’nyanja. Anangumi amapitirizabe kusintha mgwirizano wawo.
Anangumi aakazi amanyamula ana awo m'mimba pakati pa miyezi 16 ndi XNUMX. Nthawi zambiri amakhala mwana mmodzi yekha. Pambuyo pa kubadwa, mwana wa nangumi ayenera kubwera pamwamba pa madzi kuti apume.
Monga nyama zoyamwitsa, anamgumi ang’onoang’ono amapeza mkaka kuchokera kwa amayi awo, umene nthawi zambiri sukwanira kwa awiri. Choncho, mmodzi wa mapasa nthawi zambiri amafa. Popeza kuti anawo alibe milomo yoyamwitsa, mayi amathira mkakawo m’kamwa mwa mwanayo. Iye ali ndi akatumba apadera kwa izo. Nthawi yoyamwitsa imatha pafupifupi miyezi inayi, mu mitundu ina kupitirira chaka.
Kutengera ndi mtundu wake, namgumi ayenera kukhala ndi zaka zisanu ndi ziwiri mpaka khumi asanakwanitse kukhwima pakugonana. Nangumi wa sperm whale ali ndi zaka 20. Ichi ndi chimodzi mwa zifukwa zomwe anamgumi amachulukana pang'onopang'ono. Anangumi amatha kukhala zaka 50 mpaka 100.