I-Layard's toothed (i-Mesoplodon layardii) noma i-whale enomlomo onamabhande.
Ukusabalala kweLeltard's Belttooth
ILayard's Stormtooth inebanga eliqhubekayo emanzini abandayo afudumele aseNingizimu Nenkabazwe, ikakhulu aphakathi kuka-35 ° no-60 ° C. Njengayo yonke imikhomo enemilomo, itholakala ngokuyinhloko emanzini ajulile eshalofini lasezwenikazi.
Kusatshalaliswe ogwini lwase-Argentina (Cordoba, Tierra del Fuego). Ihlala endaweni enamanzi eduze kwase-Australia (New South Wales, Tasmania, Queensland, South kanye neWestern Australia, Victoria). Ibhande likaLayard likhona emanzini aseBrazil, eChile, eduze neFalkland Islands (Malvinas) kanye nezindawo eziseningizimu neFrance (Kerguelen). Ihlala futhi emanzini ase-Heard naseMcDonald Islands, eNew Zealand, ngasogwini lwaseNingizimu Afrika.
Izimpawu zangaphandle zebhande likaLayard
Ibhande likaLayard linobude bomzimba obungamamitha ayi-5 kuye kwayi-6.2. Isisindo sayo singu-907 - 2721 kg. Izingane zizalwa zinobude obungamamitha ama-2,5 kuya kwayi-3, kanti isisindo sazo asaziwa.
Amabhande kaLayard anomzimba omise okokuphotha onamacala ayindilinga, athe chithi saka. Kukhona impumu ende, ezacile ekugcineni. Amaphiko mancane, ancanyana futhi ayindilinga. Isiphetho se-dorsal sifinyelela kude begodu sine-crescent shape. Umbala wesikhumba ikakhulukazi omnyama ngokuluhlaza okwesibhakabhaka, kwesinye isikhathi ububende obumnyama buhlanganiswe nomhlophe ngaphansi, phakathi kwamaphiko, ngaphambili komzimba nasekhanda. Kukhona namabala amnyama ngenhla kwamehlo nasebunzini.
Isici se-morphological esivelele kunawo wonke ebhandeni lezinyo likaLayard yi-molars eyodwa, etholakala kuphela emadodeni amadala. La mazinyo atholakala emhlathini ongenhla ogobile futhi avumela ukuvula umlomo ububanzi obungu-11 - 13 cm kuphela.Kucatshangwa ukuthi la mazinyo ayadingeka ekulimazeni izimbangi, ngoba kutholakala kwabesilisa inani elikhulu lezibazi.
Ukukhiqizwa kabusha kwezinyo likaLayard
Kuncane okwaziwayo ngokuziphatha kokuzala kwamazinyo amabhande kaLayard.
Kukholelwa ukuthi ukukhwelana kwenzeka ehlobo, izingane ezisanda kuzalwa zivela ngasekupheleni kwehlobo, ekwindla ekuqaleni kwezinyanga eziyi-9 kuya kwezingu-12 zokukhulelwa. Amabhande kaLayard azalela kanye ngonyaka. Akukho lwazi mayelana nokunakekelwa kwabazali ngenzalo yabo. Njengazo zonke izingane ezisanda kuzalwa, imikhomo namahlengethwa, amawundlu adla ubisi, ubude besikhathi sokudla okunjalo abaziwa. Izingane ezisanda kuzalwa ziyakwazi ukulandela unina kusukela ekuzalweni. Iqhaza lowesilisa emndenini alicaci.
Isikhathi sokuphila samazinyo amabhande kaLayard ngokusobala siyefana naleso sabamele ezinye izinhlobo kuhlobo lohlobo, kusuka eminyakeni engama-27 kuye kwengama-48.
Izici zokuziphatha zebhande likaLayard
ILayard's Straptooth ijwayele ukubalekela ukuhlangana nemikhumbi, yingakho kungavamile ukubonakala kuyo endle. Izilwane zasolwandle zicwila kancane ngaphansi kwamanzi bese zikhuphukela phezulu kuphela ngemuva kwamamitha ayi-150 - 250. Ukuntywila kuvame ukuthatha imizuzu eyi-10-15.
Amazinyo amakhulu we-canine emadodeni amadala kucatshangwa ukuthi ayadingeka ekuxhumaneni okubukwayo noma okuthintwayo. Eminye imikhomo enamazinyo nayo isebenzisa ukuhleleka; kungenzeka ukuthi amazinyo amabhande kaLayard nawo abe nohlobo oluthile lokuxhumana kwe-acoustic ngaphakathi kohlobo.
Amandla eBelttooth kaLeyard
Ukudla okuyinhloko kwamazinyo amabhande kaLayard kuqukethe izinhlobo ezingamashumi amabili nane ze-squid yolwandle, kanye nezinhlanzi zasolwandle olujulile. Isimanga nokudideka kudalwa wukuba khona komhlathi ongezansi okhulisiwe kwabesilisa. Ekuqaleni bekukholelwa ukuthi kuphazamisa ukondla, kepha, ngokusobala, okuphambene kuyiqiniso. Lokhu kuyithuluzi elibalulekile lokufaka ukudla emphinjeni. Kepha lokhu kucatshangwa kuyangatshazwa, ngoba kungenzeka ngokuphelele ukuthi amazinyo amabhande kaLayard amane amunce ukudla emlonyeni wawo, noma ngabe angakuvula kangakanani.
Izitha zemvelo zeLayard's Belttooth
Amathambo amabhande kaLayard angawela esiswini semikhomo ebulalayo
Indima ye-ecosystem yebhande likaLayard
Ama-layard's scraper adla izinhlobo ezahlukahlukene zezinto eziphila olwandle, ngakho-ke kungenzeka athinte inani lalezi zinto eziphilayo.
Izizathu zokwehla kwesibalo sezinyo likaLayard
Akukho lwazi ngobuningi bamazinyo ebhande likaLayard noma ukuthambekela kwenani lalezi zinhlobo. Lezi zilwane zasolwandle azithathwa njengezingajwayelekile, kepha zingaba sengozini yezinsongo ezisezingeni eliphansi futhi kungenzeka zihlelwe ukwehla komhlaba ngama-30% kwizizukulwane ezintathu. Isimo sezinhlobo zemvelo asihlolwe, kepha uma kubhekwa inani lamazinyo amabhande alahlwe ogwini, kungenzeka ukuthi akusilo uhlobo olungajwayelekile lolu uma kuqhathaniswa nezinye izihlobo.
Njengayo yonke imikhomo enemilomo, zondla ikakhulukazi emanzini ajulile ashelefini lasezwenikazi.
Ukudla kuqukethe cishe i-squid ye-oceanic ehlala ekujuleni okukhulu. Akuzange kube khona ukuzingelwa okuqondile kwamazinyo amabhande kaLayard. Kodwa ukudotshwa kwezinhlanzi okujule kakhulu olwandle olwandle kudala ukukhathazeka ngokuthi ezinye zezinhlanzi zisabanjwe enetheni. Ngisho amazinga aphansi okubanjwa kwalezi zilwane zasolwandle angadala imithelela ngezikhathi kuleli qembu lama-cetaceans angavamile.
I-Mesoplodon layardii yizinhlobo ezihlangabezana nezinhlobo eziningi zokusongelwa:
- ukubambeka okungenzeka kumanethiwekhi we-drifter nakwamanye amanethiwekhi;
- ukuncintisana kwabadobi ngokubamba izinhlanzi, ikakhulukazi ama-squid;
- ukungcoliswa kwemvelo yasemanzini nokuqongelelwa kwe-DDT ne-PCb ezicutshini zomzimba;
- ukukhishwa okusala dengwane e-Australia;
- ukufa kwezilwane ezintweni zepulasitiki ezilahliwe.
Lezi zinhlobo, njengezinye imikhomo ezinemilomo, zibhekene nomthelela we-anthropogenic ngemisindo ephezulu, esetshenziswa ucwaningo lwe-hydroacoustic kanye nokuzamazama komhlaba.
Emanzini abandayo apholile, uthambo lwamazinyo kaLayard lusengozini yemiphumela yokuguquka kwesimo sezulu, njengoba ukufudumala kolwandle kungashintsha noma kunciphise ububanzi bezinhlobo, ngoba izilwane zasolwandle zihlala emanzini anokushisa okuthile. Imithelela yalobu bukhulu nemiphumela yazo kulezi zinhlobo ayaziwa.
Isimo sokonga sezinyo likaLayard
Imiphumela ebikezelwe yokuguquka kwesimo sezulu emhlabeni jikelele kwezemvelo yasolwandle ingathinta ibhande likaLayard, yize uhlobo lwaleli thonya lungaqondakali ngokuphelele. Izinhlobo zifakiwe ku-CITES Isithasiselo II. Ucwaningo luyadingeka ukuthola umthelela wezinsongo ezingaba khona kulezi zinhlobo.
Ngo-1982, Kwasungulwa Uhlelo Lukazwelonke Lokubambisana ukuze kwenziwe ucwaningo ukuze kutholakale izimbangela zemikhomo ebhajwe imikhomo. Enye indlela yokonga ibhande likaLayard ukwakhiwa kwezivumelwano zokuvikela izinhlanzi zasolwandle nezindawo zazo zokuhlala emhlabeni jikelele.
https://www.youtube.com/watch?v=9ZE6UFD5q74
