Moemeli e monyane haholo oa tšenyo ea li-sirel: bolelele ba 'mele 2,5-4 m, boima bo fihla ho 600 kg. Bolelele ba 'mele bo rekotiloeng haholo (ba batona ba tšoeroeng Leoatleng le Lefubelu) e ne e le limithara tse 5.8.

Hlooho e nyane e thellang e fetela 'meleng o moholo o harelaneng o phethoang ka chelete e tsoang holimo. Mohatla o fapaneng ka sebopeho ho tloha mohatleng oa manatees mme o tšoana le mohatla oa li-cetaceans: matloana a eona a mabeli a arohantsoe ke mohloa o tebileng. Linoko tsa pele li ile tsa fetoha mapheo a bonolo a kang makhoaba a bolelele ba 35-45 cm. Ke masapo a pōpong feela a neng a patiloe mesifaeng a neng a setse libakeng tse tlase. Letlalo le boreleli, ho fihlela le bophara ba 2-2,5 cm, le koaetsoe ke moriri o le mong o sa qalang. 'Mala o fifala le botsofali,' me o fetoha o boreleli kapa o sootho, mpa e bobebe.

Hlooho e nyane, e chitja, e na le molala o mokgutshwane. Ha ho na li-auricles. Mahlo a manyane, a tiile. Linko li phahamisoa ka matla ho feta li-sirel tse ling, tse nang le li-valve tse koalang ka tlasa metsi. Mosesa o shebahala o felisitsoe, o fela ka molomo o nang le nama o leketlileng tlase. Molomo o kaholimo o na le melumo e thata mme e boputse bohareng (e matla ho batho ba banyenyane), sebopeho sa eona se thusa dugong ho khetha mohloa. Molomo o ka tlase le karolo e ka thoko ea mahalapa e koahetsoe ke libaka tse keratinized. Li-dugong tse nyane li na le meno a ka bang 26: li-incisors tse 2 le lipara tse 4-7 tsa molars ka holimo le ka tlase molomong. Ho batho ba baholo, lipara tsa 5-6 tsa molars lia bolokoa. Ntle le moo, ho ba batona, li-incisor tse holimo li fetoha lisks tse tsoang lipakeng ka lisenthimithara tse 6-7. Ho tse tšehali, lihloho tse holimo li nyane, ka linako tse ling ha li kenelle. Li-molars ke li-cylindrical, ha li na enamel le metso.

Letlalong la dugong, masapo a maxillary a holisoa haholo. Masapo a Nasal ha a eo. Mohlahare o ka tlase o khumame. Lebokose la boko le lenyane. Masapo a masapo a boreleli ebile a matla.

Ho jaleha

Nakong e fetileng, mokokotlo o ne o pharaletse: li-dugong li ne li kenella leboea Europe Bophirima [mohloli ha oa hlalosoa matsatsi a 1055]. Ho latela bafuputsi ba bang, ba ile ba sebeletsa e le mohlala oa li-mymaical mermaids [mohloli ha oa hlalosoa matsatsi a 1055]. Hamorao ba ile ba pholoha feela libakeng tse chesang tse mongobo tsa Indian le Pacific Boroa: ho tloha Leoatleng le Lefubelu le lebopong le ka bochabela la Afrika, ka Koung ea Persia, lebopong le ka leboea-bochabela la India, haufi le Peninsula ea Mala, Australia Leboea le New Guinea, hammoho le lihlekehlekeng tse 'maloa tsa Pacific. Bolelele bohle ba li-dugongs tsa sejoale-joale li hakantsoe ho 140,000 km ea lebopo la leoatle.

Hajoale, boholo ba li-dugongs (batho ba fetang 10,000) ba lula haufi le Great Barrier Reef le Torres Strait. Palo e kholo ea batho ba lebopong la Kenya le Mozambique e fokotsehile haholo ho tloha ka bo-1970. Haufi le lebopo la Tanzania, dugong ea ho qetela e bonoe ka la 22 Pherekhong 2003, kamora lilemo tse 70 tsa hiatus. Li-dugong tse nyane li fumanoa Palau (Micronesia), hoo e ka bang. Okinawa (Japane) le Johor Strait pakeng tsa Malaysia le Singapore.

Mokhoa oa bophelo

Li-dugong li lula metsing a futhumetseng a lebōpong la leoatle, mabala a sa tebang le likhahla. Ka nako e 'ngoe ba ea leoatleng le bulehileng, ba ea litsietsing le linokeng tsa linoka. Li bolokiloe kaholimo ho botebo ba botebo bo seng boteng ba 10-20. Boholo ba ketsahalo bo fepa, bo amanang le ho nyefoloa hoa maqhubu, eseng ka lihora tsa motšehare. Li-dugong li tla ho fepa ka metsing a sa tebang, ho mafika a likorale le mabopo, a botebo ba limithara tse 1-5. Motheo oa lijo tsa tsona ke limela tse metsing tse tsoang malapeng a mefuta le tse khubelu-ea metsi, hammoho le leoatle. Makhoaba a manyane a ile a fumanoa le ka mpeng tsa 'ona. Ha ho fepa, 98% ea nako e sebelisoa tlasa metsi, moo ba "fula" bakeng sa 1-3, nako e telele ea metsotso e 10-15, ebe ba ema holimo bakeng sa khothatso. Ka tlase hangata "tsamaea" matheong a ka pele. Meroho e thunngoa ka thuso ea molomo o ka holimo oa mesifa. Pele o ja semela, hangata dugong e e fafatsa ka metsing, e sisinya hlooho ea eona ho tloha ka lehlakoreng. Dugong e ja limela tse ka bang 40kg ka letsatsi.

Li bolokiloe li le ling, empa libakeng tse feptjoang li bokellana ka lihlopha tsa sepheo sa 3-6. Nakong e fetileng, mehlape ea li-dugong ho fihlela lihloohong tse makholo a 'maloa e ile ea tsejoa. Li lula haholo li tsitsitse, baahi ba bang ba etsa motsamao oa letsatsi le letsatsi, ho latela ho feto-fetoha ha maemo a metsi, mocheso oa metsi le phallo ea lijo, hammoho le khatello ea anthropogenic. Ho latela data ea morao-rao, bolelele ba ho falla, haeba ho hlokahala, ke lik'hilomithara tse makholo le 1 (1). Lebelo le tloaelehileng la ho sesa le fihla ho 10 km / h, empa dugong e tšohileng e ka potlaka ho fihla ho 18 km / h. Li-dugong tse nyane li sesa haholo ka mapheoana a pectoral, batho ba baholo ba sesa mohatla oa bona.

Hangata li-dugong ha li khutse. Ba thabile ebile ba tšohile, ba letsa mololi o bohale. Likhahla li etsa lerata le llang. Pono ho dugongs ha e ntlafatsoe hantle, ho utloa ho lokile. Bokhoni bo bobe haholo ho feta manatees.

Ho tsala

Ho tsoala ho tsoela pele selemo ho pota, ho fapana ka nako ea tlhoro likarolong tse fapaneng tsa mefuta. Ba batona ba dugong ba loanela basali ba sebelisa menoana ea bona. Ho ima ho nka selemo. Ho na le koro e le 'ngoe ka har'a litšila, hangata. Nakong ea lijana, malinyane a khomarela mokokotlo oa 'm'a, lebese le anngoa ka tlase. Malinyane a seng a holile a bokana mehlapeng metsing a sa tebang motšehare. Ba batona ha ba kopanele ho holiseng bana.

Ho fepa ka lebese ho nka likhoeli tse 12-18, le ha li le dugong li qala ho ja joang kamora likhoeli tse tharo. Ho kena bohlankaneng ho etsahala lilemong tse 9-10, mohlomong hamorao. Lishaka tse kholo li jang liphofu tse kholo. Tebello ea bophelo e fihlile ho lilemo tse 70.

Boemo ba baahi

Li-dugong li batloa nama e tšoanang le veal ka tatso, hammoho le mafura, matlalo le masapo, a sebelisetsoang mosebetsi oa matsoho o entsoeng ka manaka a litlou. Litsong tse ling tsa Asia, likarolo tsa 'mele tsa li-dugongs li sebelisoa litlhare tsa setso. Ho tsoa phoofolo e boima ba lik'hilograma tse 200-300 amohela li-litha tsa 24-56 tsa mafura. Ka lebaka la ho jang liphofu le ho senyeha ha tikoloho, dugong e se e fumaneha seoelo kapa e felile ka bongata ba eona. Kahoo, ho latela likhakanyo tse etselitsoeng khafetsa ho tšoasoa ke li-dugong ka matlooa, palo ea eona karolong e atlehileng ka ho fetisisa ea sebaka, lebopong la Queensland, e fokotsehile ho tloha ho lihlooho tsa 72,000 ho isa ho 4,220 ho tloha ka 1962 ho isa ho 1999. (2)

Hajoale, ho tšoasa litlhapi tsa dugong ho thibetsoe ke matlooa mme ba hulitsoe likepeng. Mera e lumelloa e le mokhoa oa setso oa batho ba matsoalloa. Dugong e thathamisitsoe Bukeng e Khubelu ea International Union bakeng sa ho Boloka Tlhaho ka boemo ba "mefuta e tlokotsing" (E kotsing).