Puas yog MANATEE nyob rau hauv DANGER OF EXTINCTION? - Ua rau thiab cov ntaub ntawv

Cov txheej txheem:

Puas yog MANATEE nyob rau hauv DANGER OF EXTINCTION? - Ua rau thiab cov ntaub ntawv
Puas yog MANATEE nyob rau hauv DANGER OF EXTINCTION? - Ua rau thiab cov ntaub ntawv
Anonim
Puas yog manatee nyob rau hauv kev txaus ntshai ntawm extinction? fetchpriority=siab
Puas yog manatee nyob rau hauv kev txaus ntshai ntawm extinction? fetchpriority=siab

The manatee, also known as the sea nyuj, is common name used to refer to a family of sirenid mammals, that is, aquatic placental mammals, being the biggest aquatic herbivore. Nws muaj nyob hauv tsev neeg trichechid (Trichechidae) thiab nws cov genus yog Trichechus, tam sim no muaj peb hom faib thoob plaws hauv Asmeskas thiab Africa, ob qho tib si hauv dej tshiab thiab dej hiav txwv. Lawv yog cov tsiaj muaj kev thaj yeeb nyab xeeb thiab, txawm hais tias lawv feem ntau nyob ib leeg, manatees yog cov xav paub heev thiab feem ntau mus rau nkoj. Nws tsuas yog tsiaj txhu xwb yog tib neeg thiab nws txoj kev tuag feem ntau cuam tshuam nrog kev ua ub ua no.

Nyob rau hauv no nyeem tsab xov xwm no rau ntawm peb lub xaib thiab koj yuav pom tias tus manatee yuav raug kev puas tsuaj los yog tsis, as well as lwm yam yam ntxwv.

Kev faib tawm thiab cov yam ntxwv ntawm manatees

Manatees muaj lub cev fusiform (elongated thiab ellipsoid puab) thiab lawv tsis muaj caj npab Lawv tus Tsov tus tw yog tiaj tus siv los ua ib tug oar, lub forelimbs luv luv thiab hloov tau thiab muaj peb lossis plaub tus ntsia hlau. Ib tug neeg laus tsiaj tuaj yeem ntsuas txog 4 m thiab hnyav txog 500 kg. Cov kev ntsuas no ua rau manatee yog Cov tsiaj loj tshaj plaws hauv tebchaws Latin America

Manatees pw hauv qab dej, hla txhua 20 feeb los yog kom ua pa thiab noj zaub mov hauv qhov ntiav. Lawv lub voj voog me me yog qhov ntev heev thiab lawv feem ntau yog khub niam txiv txhua ob xyoos, yug me nyuam ib leeg. Cov tsiaj no tsim ib feem tseem ceeb ntawm cov dej ecosystems uas lawv nyob, vim lawv pab tswj kev sib npaug ntawm cov nroj tsuag thiab, ntxiv rau, ua raws li bioindicator ntawm kev noj qab haus huv thiab zoo ntawm lawv ib puag ncig. Ib yam li ntawd, vim lawv txoj kev noj mov, manatees yog cov khoom siv rov ua dua tshiab, vim lawv hloov cov nroj tsuag biomass, ua rau muaj ntau yam kab mob hauv dej.

Hmoob manatees thiab lawv nyob qhov twg

Tam sim no, muaj peb hom, uas yog cov hauv qab no:

  • Trichechus manatus (Caribbean los yog Florida manatee): nyob hauv Antilles thiab dej ntws thiab estuaries ntawm Caribbean Hiav Txwv phiab, saum toj no tag nrho ntawm cov ntug dej hiav txwv ntawm Dominican koom pheej, ib qhov chaw uas muaj ib qho tseem ceeb reserves thiab kev txuag tej yaam num rau cov tsiaj no, raws li zoo raws li yog thawj lub teb chaws uas tsim kev cai lij choj tiv thaiv rau cov tsiaj no. Cov tsiaj no muaj ob hom subspecies, uas yog Florida manatee (Trichechus manatus latirostris) thiab West Indian manatee (Trichechus manatus manatus), uas nyob rau sab qaum teb ntawm South America.
  • Trichechus senegalensis (African manatee): hom manatee no yog ib qho ntawm cov ntaub ntawv tsawg kawg nkaus. muaj, txij li tsis muaj ntau txoj kev tshawb fawb txog nws. Nws paub tias tau muab faib rau hauv cov chaw nyob hauv ntug dej hiav txwv thiab hauv cov estuaries thiab cov dej ntws nyob rau sab hnub poob ntug dej hiav txwv ntawm Africa.
  • Trichechus inunguis (Amazonian manatee): nyob hauv ntug dej hiav txwv ntawm South America thiab Amazon River thiab nws cov ceg, hauv cov tebchaws xws li Brazil, Peru, Bolivia, Ecuador, Colombia, Venezuela thiab hauv cheeb tsam Guianas. Ntawm qhov tod tes, nws tseem tuaj yeem pom hauv Panama Canal, qhov chaw uas nws tau qhia los tswj kev loj hlob ntawm cov nroj tsuag dej hauv txoj kev sib tshuam dej hiav txwv, thaum nws tau los ua naturalized. Kawm ntxiv Amazon Tsiaj nyob rau hauv lwm tsab xov xwm no.
Puas yog manatee nyob rau hauv kev txaus ntshai ntawm extinction? - Kev faib tawm thiab cov yam ntxwv ntawm manatees
Puas yog manatee nyob rau hauv kev txaus ntshai ntawm extinction? - Kev faib tawm thiab cov yam ntxwv ntawm manatees

Vim li cas tus txiv neej thiaj raug kev ploj tuag?

Tag nrho cov hom yog categorized li "vim" nyob rau hauv lub ntiaj teb no, raws li lub International Union for Conservation of Nature (IUCN). Tshwj xeeb, cov npe subspecies yog nyob rau hauv kev txaus ntshai ntawm extinction vim, feem ntau, rau anthropic kev ua ub no, uas yog, vim tib neeg kev ua si Yog li ntawd, muaj ntau yam. Cov chaw cawm siav lossis chaw tiv thaiv uas cov tsiaj no nyob.

Tam sim no, khawb me ntsis tob rau hauv qhov ua rau muaj kev puas tsuaj rau manatee, peb qhia cov hauv qab no:

  • Ntau zaus cov neeg uas tsis raug tua tam sim ntawd raug mob hnyav. Manatees qeeb qeeb thaum lawv noj zaub mov thiab ua luam dej hauv nroog thaj chaw ntug dej hiav txwv thiab muaj kev cuam tshuam rau nkoj thaum lawv noj thiab nyob hauv qhov ntiav (feem ntau 1-2 meter) ntug hiav txwv. Qee lub sij hawm, leej niam tuaj yeem raug mob lossis raug tua, tso ntau tus menyuam mos nyob ib leeg thiab tsis muaj sia nyob vim lawv tsis tuaj yeem saib xyuas.
  • Bycatch. Kev nuv ntses tsis zoo ua rau muaj kev hem thawj rau manatees, feem ntau siv txoj hauv kev uas ntes cov tsiaj no ua rau raug mob lossis tua lawv.
  • Qhov no kuj ua rau poob ntawm manatee qhov chaw nyob, vim, raws li peb tau hais, nws nyob hauv cov ntug dej hiav txwv ntiav thiab feem ntau nyob ze rau tib neeg, qhov chaw uas nws tuaj yeem noj.
  • Ua ib hom neeg xav paub, qeeb thiab thaj yeeb, feem ntau yooj yim rau ntau tus neeg yos hav zoov kom ntes lawv rau lawv cov nqaij, tawv nqaij thiab roj.
  • Pollution nrog cov tshuaj lom los yog hlau sib xyaw nrog seagrasses kuj yog lwm qhov ua rau cov tsiaj poob qis, vim lawv nyob ntawm cov zaub no rau zaub mov. thiab chaw nyob.
Puas yog manatee nyob rau hauv kev txaus ntshai ntawm extinction? - Vim li cas tus manatee nyob rau hauv kev txaus ntshai ntawm extinction?
Puas yog manatee nyob rau hauv kev txaus ntshai ntawm extinction? - Vim li cas tus manatee nyob rau hauv kev txaus ntshai ntawm extinction?

Manatee Conservation Status

Cov tsiaj no muaj npe nyob rau hauv Cov Ntawv Ntxiv I ntawm Cov Lus Cog Tseg rau Kev Lag Luam Thoob Ntiaj Teb hauv Cov Tsiaj Tsiaj Tsiaj Tsiaj Tsiaj Tsiaj Tsiaj thiab Flora (CITES). Nyob rau hauv Latin America lub teb chaws, kev txuag manatee tau ua ntau xyoo, yog li muaj Regional Management Plan for the West Indian Manatee, uas tau hloov kho xyoo 2010 (UNEP). Tsis tas li ntawd, ntau lub teb chaws tau tsim ib txoj kev tswj hwm thiab kev tiv thaiv rau manatees ntawm lub teb chaws thiab cheeb tsam, coj mus rau hauv tus account qhov tshwj xeeb ntawm kev hem thawj rau manatees nyob rau hauv txhua lub teb chaws.

tshwj xeeb tshaj yog, Brazil txwv tsis pub yos hav zoov ntawm Amazonian manatee xyoo 1973 thiab tsoomfwv Meskas txoj cai lij choj tsis tso cai rau kev yos hav zoov, ntes, tua lossis ua phem rau Florida manatee. Hauv Florida, manatees raug tiv thaiv ua tsaug rau " Florida Manatee Sanctuary". Ntawm qhov tod tes, muaj ntau qhov chaw thiab chaw cia rau manatees hauv cov tsiaj qus, ob qho tib si hauv Tebchaws Meskas thiab Mexico, nrog rau lwm lub tebchaws, xws li Costa Rica, Guatemala, Panama, Honduras thiab Venezuela. Nyob rau hauv tas li ntawd, txij li thaum 2014 lub manatee tau tshaj tawm lub teb chaws tshiab cim ntawm Costa Rica thiab nyob rau hauv Mexico, txij li thaum 2019, Jonuta (hauv Tabasco) tau tshaj tawm hais tias ib tug manatee sanctuary.

International, tag nrho cov sirenids muaj kev tiv thaiv raws li txoj cai ntawm Cartagena Convention (SPAW), uas txwv tsis pub ntes, tua, yuav los yog muag manatees, nrog rau cov khoom los yog cov khoom ua los ntawm lawv.

Tam sim no, yog tias koj xav paub tias koj tuaj yeem pab tiv thaiv kab mob ploj mus li cas, cov lus teb yog qhia koj tus kheej kom ntau li ntau tau. Tam sim no koj paub txog cov laj thawj uas ua rau muaj kev hem thawj rau nws lub neej, sim ua txoj kev ua neej nyob ruaj khov li sai tau, rov ua dua thiab paub txog txhua yam khoom koj yuav. Ib yam li ntawd, koj tuaj yeem tshawb pom hauv koj lub tebchaws los saib seb puas muaj cov koom haum ua haujlwm hauv kev txuag manatee sim ua haujlwm pub dawb.

Yog xav paub ntxiv, tsis txhob ua siab deb los sab laj peb tsab xov xwm Yuav ua li cas tiv thaiv tsiaj txhu.

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