濒危动物英文课件

ThestatusofendangeredanimalsAccordingtothesurvey,thereare75speciesdieouteverydayintheworld.Thatistosay,attheaverageof3speciesvanishanhour.Inchina,thepopulationofendangeredanimalsisveryrarely,andthenumberofendangeredanimalsisdecreasingrightnow.Duetohumanexpansion,manyanimalshaven’thometolivein.Thestatusof12endangeredanimalsintheworldonlyproducedinthemiddleandlowerYangtzeRiverChinese,Thebaijiisawarmbloodedanimal,knownasthe"waterofthegiantpanda".TotwentiethCentury,duetovariousreasons,thepopulationdecline,estimatedin2023hasbeenlessthan50head,itnotonlywereclassifiedasanationalprotectedwildanimal,isoneoftheworld's12mostendangeredanimal.InAugust8,2023,"theRoyalSocietyjournalBiologicalletter"publishedinthereport,formallyannouncedthebaijifunctionalextinction.白鳍豚（LipotesvexilliferMiller）

Sumatrantigeristhesmallestsubspeciesinalltigerspecies.

OnlydistributedinIndonesia‘sSumatraisland(印度尼西亚苏门答腊岛).Thehabitatoftheforestfromtheplainstothemountains.TheonlyremainingwildSumatrantigersareabout400-500,mostlyfivenationalparksinIndonesiaisland.苏门答腊虎TheSumatrantigerWhiteRhinoceros，Membersofthespeciesonceinhabitedrainforests,swamps,andcloudforestsinIndia,Bhutan（不丹）,Bangladesh（孟加拉共和国）,Myanmar（缅甸）,Laos,Thailand,Malaysia（马来西亚）,Indonesia,andChina。Theirnumbersaredifficulttodeterminebecausetheyaresolitary（独立旳）animalsthatarewidelyscatteredacrosstheirrange,buttheyareestimatedtonumberfewerthan275.SurvivalofthePeninsularMalaysia（马来半岛）populationisindoubt.Totalnumberstodaymaybeaslowas200.北部白犀牛(Sumatranrhinoceros)The

Orinococrocodile

isa

criticallyendangered

crocodile.Itspopulationisverysmallanditcanonlybefoundinfreshwaterenvironmentsin

Colombia(哥伦比亚)

and

Venezuela（委内瑞拉）,inparticularthe

Orinoco

Riveranditstributaries.

Extensivelyhuntedfortheirskinsinthe19thand20thcenturies,thisspeciesisoneofthemostcriticallyendangeredspeciesofcrocodiles.Maleshavebeenreportedupto6.6

minthepast,butsuchsizesdonotexisttoday.奥里诺科鳄鱼TheOrinococrocodileThe

mouselemurs

are

nocturnal（夜间活动旳）

lemurs

ofthegenus

Microcebus（倭狐猴属）.LemursandMouseLemurswereannouncedbytheIUCN（国际自然和自然资源保护联合会）

asthemostendangeredofallvertebrates.Thereareabout24mouselemurspeciesidentifiedby2023.Therewereonly2knownmouselemurspeciesby1992.Itwasestimatedthatthe24mouselemurspeciesevolvedfromacommonancestor10millionyearsago.Evolutionofmouselemursisanexampleforadaptiveradiation.小嘴狐猴(Mouselemur)Kemp‘sridleyseaturtle

istherarestspeciesof

seaturtle

andis

criticallyendangered.Itisoneoftwolivingspeciesinthe

genus

Lepidochely.italsoisthewholeworld12mostendangeredanimalonlynumberintothegrowthtrendofanimal.兰.坎皮海龟(L.Kemp‘sridleyseaturtle

)Monkseals

are

earlessseals

ofthe

tribe

Monachini.Theyaretheonlyearlesssealsfoundintropicalclimates.Therearetwo

genera

ofmonkseals,

Monachus

and

Neomonachus,comprisingthreespecies:the

Mediterranean(地中海)monkseal,Monachusmonachus

;the

Hawaiian（夏威夷旳）monkseal,Neomonachustropicalis

;andthe

Caribbean（加勒比海)monkseal,

Neomonachustropicalis,whichbecameextinctinthe20thcentury.Thetwosurvivingspeciesarenowextremelyrareandinimminentdangerofextinction.僧海豹(monachus-monachusormonkseal)奥瑞纳克鳄鱼(OrinocoCrocodile）ThiskindoflifeinVenezuela‘s（委内瑞拉）Orinococrocodile.ItisthelargestAmericancrocodile,isararityintheanimalinVenezuela.OvertheyearstheVenezuelanunitsconcernedtotakemeasurestoprotectendangeredtheOrinococrocodile,andhaveachievedsuccess..Theremainingwild

Orinococrocodile250-700atpresent.泰国猪鼻蝙蝠(KittisHog-nosedBat)

TheyliveinThailand,livingintheteak（柚木）

forestandbambooforestnear.Duetotheextensivedeforestation(砍伐森林),leadingtotheirlivingenvironmentisdestroyed,andnowthesurvivalofporcinenasalbat（猪鼻蝙蝠）willnotmorethan200.夏威夷蜗牛(genusAchatinella)Becauseofthedamagetotheenvironment,causetheygraduallylosttheiroriginalhabitat.Besidestheyarealsosubjecttootherimportedanimalthreats,suchasmice,carnivorous(肉食性旳)snails,Africalargesnails.Anditbrightlycoloredshell,leadtomanycollectorslikesnailshellpeopleatanycosttohaveit.Now,theyextremelyrareandinimminentdangerofextinction.斯比克斯鹦鹉CyanopsittaspixiiBytheendof2023,“Bixparrothasbeenextinctinthewild,thepossessionofonlyabout60,itisapitythatthe60mostarebrothersandsisters,genelibraryisstillneededtoexpand,orwillbecausecloserelativesproblemshavecausedextinctionoflesions（病变）.Thisbird‘sfutureremainsgrim（残忍旳）..微型猪(pigmyhog)Theworld‘ssmallestpig,livemainlyinthenortheastofIndia.60cminlength,about25cmhigh,adultpigsunder10kg.OnceintheHimalaya（喜马拉雅）Rangeareaexists,nowonlyA-SunoftheIndia（印度旳阿桑地域）regionhas