Taw qhia rau Black Rat Snake

Tus Tsov Dub Snake, kev tshawb fawb hu ua Pantherophis obsoletus, yog ib hom nab uas tsis muaj venomous uas koom nrog tsev neeg Colubridae. Nws yog nyob rau hauv North America thiab tau dav faib thoob plaws tebchaws United States sab hnub tuaj thiab ib feem ntawm Canada. Cov nab no yoog tau zoo heev thiab tuaj yeem pom muaj nyob hauv ntau qhov chaw nyob, los ntawm hav zoov thiab cov nyom mus rau thaj av thiab thaj chaw suburban. Nrog lawv lub cev dub zoo nkauj thiab lub plab dawb lossis daj, Cov Nab Dub feem ntau yuam kev rau hom tsiaj, xws li Eastern Diamondback Rattlesnake.

Cov yam ntxwv ntawm lub cev ntawm Dub nas nab

Black Rat Snakes yog qhov nruab nrab rau cov nab loj loj, nrog rau cov neeg laus feem ntau ntev li ntawm 4 mus rau 6 feet, txawm tias qee tus neeg tuaj yeem ncav cuag 8 feet ntev. Lawv muaj lub cev yuag npog hauv cov nplais du, uas tso cai rau lawv txav nrawm thiab nce ntoo yooj yim. Cov xim ntawm lawv cov nplai sib txawv nyob ntawm lawv lub hnub nyoog thiab thaj chaw, tab sis lawv feem ntau yog xim dub lossis xim av tsaus rau ntawm sab dorsal, nrog rau qee tus neeg pom cov kab txaij lossis kab txaij. Sab ventral ntawm tus nab yog sib dua ntawm cov xim, feem ntau yog dawb los yog daj.

Habitat thiab Distribution of Black Rat Snake

Black Rat Snakes yog qhov hloov tau zoo heev thiab tuaj yeem pom nyob hauv ntau qhov chaw nyob thoob plaws hauv lawv qhov kev faib tawm. Lawv feem ntau pom nyob rau hauv hav zoov, hav zoov, pob zeb outcrops, farmlands, thiab txawm nyob rau hauv suburban cheeb tsam. Cov nab no yog cov neeg nce toj zoo heev thiab feem ntau tuaj yeem pom hauv cov ntoo lossis ntawm cov laj kab ncej, qhov chaw lawv yos hav zoov rau cov tsiaj txhu los yog bask nyob rau hauv lub hnub. Lawv yog cov nyob rau sab hnub tuaj Tebchaws Meskas, los ntawm New England mus rau Florida, thiab txuas mus rau sab hnub poob mus rau thaj tsam ntawm Texas thiab Midwest. Lawv kuj tuaj yeem pom nyob rau sab qab teb Ontario, Canada.

Kev Noj Qab Haus Huv thiab Kev Noj Qab Haus Huv ntawm Dub Nab Snake

Raws li lawv lub npe qhia, thawj cov zaub mov ntawm Black Rat Snakes muaj cov nas me, suav nrog nas, nas, thiab voles. Txawm li cas los xij, lawv yog cov khoom noj pub dawb thiab tseem yuav noj lwm yam tsiaj me, noog, qe, thiab qee zaus amphibians. Cov nab no yog constrictors, txhais tau tias lawv ntes lawv cov tsiaj los ntawm qhwv lawv lub cev nyob ib ncig ntawm lawv thiab nyem kom txog thaum lawv ua pa. Black Rat Snakes yog cov neeg yos hav zoov txawj ntse thiab muaj peev xwm nce ntoo kom ncav cuag noog zes lossis nkag rau nas burrows kom ntes lawv cov tsiaj.

Kev yug me nyuam thiab Mating cwj pwm ntawm Dub nas nab

Dub nas nab yog oviparous, uas txhais tau hais tias lawv nteg qe rau yug me nyuam. Kev sib yuav tshwm sim nyob rau lub caij nplooj ntoos hlav, nrog cov txiv neej sib tw rau kev nyiam ntawm poj niam. Thaum sib tham, cov txiv neej koom nrog kev sib ntaus sib tua los ntawm kev cuam tshuam lawv lub cev thiab thawb tawm tsam ib leeg. Thaum tus poj niam xaiv ib tug khub, nws yuav nteg ib lub qe ntawm 5 mus rau 30 lub qe nyob rau hauv ib qho chaw nyab xeeb, xws li lub cav decaying los yog underground burrow. Cov qe raug tso tseg tsis tu thiab incubate li ntawm 60 hnub ua ntej hatching. Cov tub hluas nab yog ywj siab txij thaum yug los thiab yuav tsum tiv thaiv lawv tus kheej.

Predators thiab hem rau Dub nas nab

Txawm hais tias Black Rat Snakes muaj ob peb cov tsiaj nyeg raws li cov neeg laus, lawv muaj peev xwm ua rau muaj kev phom sij thaum lawv tseem hluas lossis tseem nyob hauv lawv lub qe. Predators xws li raccoons, opossums, noog ntawm prey, thiab lwm yam nab yuav noj qe los yog hatchlings. Tib neeg kuj ua rau muaj kev hem thawj rau Black Rat Snakes los ntawm kev puas tsuaj thaj chaw, kev tuag ntawm txoj kev, thiab kev sau tsis raug cai rau kev lag luam tsiaj. Tsis tas li ntawd, cov nab no yuav raug kev txom nyem los ntawm cov tshuaj tua kab los yog kev siv cov tshuaj tua kab mob los tswj cov nas.

Lifespan of Black Rat Snake in the Wild

Lub neej ntawm Black Rat Snakes nyob rau hauv cov qus yog kwv yees li ntawm 15 mus rau 25 xyoo. Txawm li cas los xij, qee cov tib neeg tau paub tias nyob mus txog 30 xyoo lossis ntau dua hauv cov xwm txheej zoo. Tej yam xws li kev tua tsiaj, kab mob, muaj zaub mov, thiab qhov chaw nyob zoo tuaj yeem cuam tshuam lub neej ntawm cov nab. Lawv muaj lub neej ntev dua piv rau ntau lwm hom nab, uas tej zaum yuav raug ntaus nqi rau lawv lub peev xwm hloov mus rau ntau qhov chaw nyob thiab lawv cov kev txawj yos hav zoov zoo.

Cov yam ntxwv cuam tshuam rau lub neej ntawm Black Rat Snake

Ntau yam tuaj yeem cuam tshuam lub neej ntawm Black Rat Snakes hauv cov tsiaj qus. Ib qho ntawm feem tseem ceeb yog predation, raws li cov tub hluas nab thiab qe yog tshwj xeeb yog yooj yim rau predators. Kev muaj zaub mov txaus kuj tseem ceeb heev rau lawv txoj sia nyob, vim cov nab tsis muaj zaub mov yuav muaj lub neej luv dua. Kev noj qab haus huv tag nrho ntawm cov pej xeem nab cuam tshuam zoo heev los ntawm thaj chaw zoo thiab tib neeg kev ua ub no, xws li kev puas tsuaj hauv vaj tse thiab kev ua qias tuaj. Kab mob thiab kab mob kuj tuaj yeem cuam tshuam rau lub neej ntawm Black Rat Snakes, txawm hais tias lawv feem ntau ua haujlwm zoo rau ntau yam kab mob nab.

Lifespan ntawm Black Rat Snake nyob rau hauv Captivity

Black Rat Snakes tuaj yeem nyob ntev dua hauv kev poob cev qhev piv rau lawv cov tsiaj qus. Nrog rau kev saib xyuas kom zoo, suav nrog cov ntaub ntawv tsim nyog, kev noj zaub mov kom zoo, thiab kev kuaj xyuas tsiaj txhu tsis tu ncua, lawv tuaj yeem nyob ntev txog 30 xyoo lossis ntau dua. Qee cov ntaub ntawv txawm hais tias Black Rat Snakes hauv kev poob cev qhev tau mus txog hnub nyoog tshaj 40 xyoo. Cov nab nab raug tiv thaiv los ntawm cov tsiaj nyeg thiab muaj cov khoom noj tas li, uas ua rau lawv lub neej ntev. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias lub luag haujlwm ua tswv cuab thiab kev coj ncaj ncees yuav tsum raug coj mus rau hauv tus account thaum khaws cov nab no ua tsiaj.

Kev sib piv nrog lwm yam nab

Piv nrog rau ntau lwm hom nab, Dub Rat Snakes muaj lub neej ntev. Piv txwv li, qee cov nab venomous, xws li rattlesnakes, muaj lifespan li ntawm 10 mus rau 20 xyoo. Lwm cov nab uas tsis yog venomous, xws li nab garter, yuav nyob tau li 5 mus rau 10 xyoo nyob rau hauv cov qus. Black Rat Snake lub peev xwm hloov mus rau ntau qhov chaw nyob thiab nws cov txuj ci yos hav zoov tau zoo tuaj yeem ua rau nws lub neej ntev dua. Tsis tas li ntawd, lawv qhov loj me thiab lub cev lub cev muaj zog tuaj yeem muab kev tiv thaiv zoo dua rau cov tsiaj nyeg, ntxiv dag zog rau lawv txoj sia.

Qhov tseem ceeb ntawm Black Rat Snake hauv Ecosystem

Black Rat Snakes ua lub luag haujlwm tseem ceeb hauv ecosystem li predators me me nas. Los ntawm kev tswj hwm cov neeg nas, lawv pab tswj kev sib npaug ntawm cov ecosystems hauv zos thiab tiv thaiv kev puas tsuaj rau cov qoob loo thiab tib neeg kev nyob. Tsis tas li ntawd, lawv lub xub ntiag pab tswj hwm cov pej xeem ntawm lwm cov tsiaj me thiab noog, ua rau muaj kev sib txawv ntawm lawv qhov chaw nyob. Raws li ob qho tib si predators thiab prey, Black Rat Snakes yog ib feem tseem ceeb ntawm cov khoom noj khoom haus web, thiab lawv kev txuag yog qhov tseem ceeb rau kev tswj hwm kev noj qab haus huv ecosystem.

Kev txuag xwm txheej thiab kev ntsuas rau Black Rat Snake

Tus nas nab dub yog tam sim no tau teev tseg raws li ib hom "tseem ceeb tshaj plaws" los ntawm International Union for Conservation of Nature (IUCN). Txawm li cas los xij, qee cov neeg tuaj yeem raug hem los ntawm kev poob chaw, kev tuag ntawm txoj kev, thiab kev sau tsis raug cai. Txhawm rau kom muaj sia nyob mus ntev ntawm cov nab no, kev txuag kev tiv thaiv yuav tsum tsom mus rau kev khaws cia thaj chaw, kev siv cov tsiaj qus txoj hauv kev, thiab kev paub txog qhov tseem ceeb ntawm cov nab hauv lawv cov ecosystems. Kev siv zog kuj tseem yuav tsum tau ua kom txo qis kev siv tshuaj tua kab mob thiab txhawb lub luag haujlwm ntawm cov tswv cuab tsiaj los tiv thaiv kev sau tsis raug cai ntawm Black Rat Snakes los ntawm cov tsiaj qus.