Dugongs vs Manatees
Dugongs thiab manatees yog cov tsiaj hiav txwv uas yog ob qho tib si ntawm Sirenia. Lawv feem ntau hu ua nyuj hiav txwv thiab tau hais tias yog qhov kev tshoov siab rau mermaid lore. Ob tug tsiaj zoo sib xws thiab tsim, tab sis txhua tus muaj cov yam ntxwv tshwj xeeb.
Dugongs
Dugongs yog cov tsiaj hauv hiav txwv loj uas pom nyob ze ntawm ntug dej hiav txwv ncig Pacific thiab Africa. Lawv muaj lub cev fusiform thiab lawv cov xim ntau los ntawm cov xim daj ntseg thaum lawv tseem hluas rau tsaus grey thaum lawv loj tuaj. Lawv kuj muaj tus Tsov tus tw zoo li ntses taub ntswg ntev, uas yog hais, nws zoo li fluke. Dugongs yog tib Sirenians uas tuaj yeem pom tsuas yog hauv cov dej ntsev thiab lawv cov khoom noj tsuas muaj seagrass xwb.
Manatees
Manatees yog Sirenians uas yuav luag tib lub cev qauv zoo li lawv cov kwv tij, cov dugongs, tsuas yog tus Tsov tus tw. Lawv muaj paddle zoo li tails xwb. Lawv pom thoob plaws hauv Caribbean, Gulf of Mexico thiab Africa. Tsis zoo li cov dugongs, lawv tsiv mus rau cov dej tshiab vim lawv tsis tuaj yeem muaj sia nyob qhov kub qis dua 15 degrees Celsius. Manatees yog cov herbivores voracious thiab lawv cov zaub mov muaj feem ntau ntawm cov nroj tsuag xws li mangroves, vaub kib nyom thiab qee cov algae.
Qhov txawv ntawm Dugongs thiab Manatees
Dugongs thiab manatees yog kwv tij txheeb ze vim li cas lawv muaj ntau qhov sib xws. Zoo li lawv lub cev piv txwv. Lawv qhov tseem ceeb muaj tib lub cev qauv tshwj tsis yog lawv cov tails. Thaum suav hais tias yog cov tsiaj hiav txwv loj, dugongs tiag tiag me dua piv rau manatees. Lwm qhov txawv ntawm lawv lub cev yog lawv snouts. Manatees muaj daim di ncauj prehensile uas lawv siv los sau cov zaub mov thiab lawv muaj lub cev luv luv piv rau dugongs. Manatees kuj tsis muaj incisors thaum dugongs muaj tus nas. Ob qho tib si tsiaj raug suav hais tias muaj kev phom sij rau kev puas tsuaj thiab kev cai nruj nruj yog nyob rau hauv qhov chaw rau lawv kev txuag.
Dugongs thiab manatees yog cov tsiaj zoo; Txawm li cas los xij lawv cov pejxeem tau poob qis vim kev yos hav zoov thiab lwm yam kev phom sij rau tib neeg thiab ib puag ncig.
In luv:
1. Dugongs thiab manatees yog cov tsiaj hiav txwv ntawm kev txiav txim Sirenia. Lawv muaj lub cev fusiform, txawm hais tias manatees muaj paddle zoo li tails thaum dugongs muaj fluke zoo li tails.
2. Ob leeg tuaj yeem pom hauv dej ntsev, txawm li cas los xij dugongs nyob rau hauv dej ntsev nkaus xwb thaum manatees feem ntau tsiv mus rau cov dej tshiab thaum lub caij ntuj no. Manatees pom nyob rau hauv Caribbean rau South America thiab nyob rau hauv Africa thaum dugongs yog ib txwm rau Pacific.
3. Manatees tuaj yeem noj yuav luag txhua cov nroj tsuag hiav txwv nrog rau qee cov algae thaum dugongs txwv rau cov nyom hiav txwv xwb.
