Ukufumanisa iiOtters zolwandle: Ilizwe elinomdla elingaphantsi kwamanzi

Ukufumanisa iiOtters zolwandle: Ilizwe elinomdla elingaphantsi kwamanzi Ngaphantsi komphezulu wolwandle, kwimimandla ebandayo yoMntla wePasifiki, kuhlala izidalwa ezimangalisayo nezinika umdla: iiotter zaselwandle. Ezi zilwanyana zanyisayo zasemanzini ziyamangalisa kwaye zigcwele izinto ezinomdla, ukusuka kwimikhwa yazo yokutya ukuya kwiindlela zazo ezimangalisayo zokuphila kwiimeko ezinzima. I-otters yolwandle zizinto zokwenyani zendalo ephantsi kwamanzi, ezikwazi ukumangalisa ngokuziphatha kunye neempawu zabo.

I-cosmos ye-otters yolwandle: iprofayili yebhayoloji

La Otter yaselwandle (I-Enhydra lutris) yeyosapho lwe-mustelid, ezinxulumene nezilwanyana ezahlukeneyo njengeeweasel kunye neeminks. Zezona otters ezinkulu ehlabathini kwaye zizo kuphela ezichitha ixesha elininzi lobomi babo emanzini. Iiotter zaselwandle zinoboya obushinyeneyo obukhethekileyo obuzikhusela kwingqele, kwaye yenye yeemfihlo zokusinda kwazo kulwandle olubandayo.

Iiotter zaselwandle zidume ngokukwazi ukusebenzisa izixhobo, indlela yokuziphatha enqabileyo phakathi kwezilwanyana ezanyisayo kwaye inqabile phakathi kwezo zihlala elwandle. Ngokuqhelekileyo basebenzisa amatye okanye amaqokobhe ukuvula i-shellfish abatya kuyo, ebonisa ubukrelekrele obumangalisayo kunye nobuqili.

Iimfihlo zembali yayo yendaleko

Iiotter zaselwandle zavela kwizinyanya zazo zasemhlabeni malunga nezigidi ezi-5 zeminyaka eyadlulayo. Yayizizilwanyana ezincancisayo zokugqibela ukwenza olu tshintsho, ziqhelana kakuhle nendawo yazo entsha. Ngokutsho kwezinye iingcamango, i<em>sea otter yayikhe yafikelela kumakhulu amawaka, kodwa ukuzingela ngokungakhethi buso ebudeni benkulungwane ye-XNUMX neye-XNUMX kwaphantse kwayitshabalalisa.

Ukususela ngoko, ngenxa yeenzame ezininzi zolondolozo kunye nokukhula okucothayo kodwa okuthe chu kubemi bazo, iiotter zaselwandle zikwazile ukuphila kwaye ziya kukwazi ukuqhubeka nokudlala indima yazo esisiseko kwi-ikhosistim yaselwandle.

Ukutya okuchukumisayo kweeotter zaselwandle

Bathi yonke into ingena ngesisu, kwaye kwi-otters yolwandle, oku kuyinyaniso. Ngaba abadlayo, ezikwaziyo ukutya ukuya kutsho kwi-25% yobunzima babo ekutyeni suku ngalunye. Ukutya kwabo kuyahluka kwaye kubandakanya iintlobo ezingaphezu kwe-100 ezahlukeneyo zezilwanyana zaselwandle ezingenamqolo.

  • Iiurchins zolwandle
  • Iimbaza
  • Oononkala
  • iintwala zasemanzini
  • Isineyile

Ukongezelela ekubeni nomnqweno onganelisekiyo wokutya, iiotter zaselwandle zikwadlala indima ebalulekileyo kwi-ecosystem yazo ngokulawula iiurchin zaselwandle kunye nokuthintela ukugawulwa kwamahlathi e-kelp.

Ulungelelwaniso olukhethekileyo kubomi bangaphantsi kwamanzi

Iiotter zolwandle ziyinyani iingcali zokuziqhelanisa. Imizimba yazo yenzelwe ubomi basemanzini; Zinemilenze yangemva emikhulu, enentambo ukuze zikwazi ukuqubha lula, kwaye ziyakwazi nokuvala iindlebe kunye neempumlo ngelixa zintywila emanzini.

Olunye uphawu oluphawulekayo lweeotter zaselwandle buboya bazo. Ukuya kuthi ga kwisigidi seenwele kwi-intshi nganye yesikwere, bobona boya buxineneyo kwizilwanyana. Obu boya bushinyeneyo bubonelela ngokugquma okubalulekileyo, njengoko iiotter zaselwandle zingenawo umaleko wamagqabi okuzigcina zishushu njengezilwanyana ezininzi zaselwandle.

Indlela entsonkothileyo yokuziphatha kweentlanzi zaselwandle

Iiotter zaselwandle zizilwanyana ezihlala kakhulu. Iimazi kunye nezincinci zihlala zisenza amaqela abizwa ngokuba yi-'flotillas' okanye 'amaqela ahambayo', azibophe kunye nokhula lwaselwandle ukuze angahlukani ngelixa elele. Iinkunzi nazo zenza amaqela, kodwa amancinci ngokomlinganiselo.

Zineendidi ezininzi zokucula, ukusuka kwimpempe ukuya kwi-screeches, ezisetyenziselwa ukunxibelelana omnye nomnye okanye ukuvakalisa uluhlu lweemvakalelo kunye neemvakalelo. Olu nxibelelwano luphucukileyo luqaqambisa ukuntsokotha kwezi zidalwa zaselwandle zinomtsalane.

Izithuba ezihambelanayo:

Shiya amazwana