Isingeniso: Ukuqonda Ubukhulu Obumaphakathi Boshobishobi BaseMelika

Ubukhulu bonoshobishobi buyisici esithakazelisayo sesayensi yezinto eziphilayo ezihlala emanzini esiye sathakazelisa ososayensi nabathandi bemvelo ngokufanayo. Kulesi sihloko, sizohlola isilinganiso sobukhulu boshobishobi baseMelika, sikhanyisele izici ezithonya ukukhula kwabo. Ngokuqonda ukuhluka kosayizi kulawa ma-tadpole, singathola imininingwane ebalulekile ekuthuthukisweni kwawo futhi sibe neqhaza emizamweni yokulondoloza imvelo ehloselwe ukuvikela lolu hlobo lwezilwane.

Ukuchaza Ixoxo LaseMelika: Ukubuka Kafushane

I-American Toad (i-Anaxyrus americanus) iwuhlobo oluvamile lwezilwane ezihlala emanzini atholakala e-United States nasezingxenyeni ezithile zaseCanada. Lawa maxoxo abonakala ngesikhumba sawo esinensumpa, esihluka ngombala kusuka kumthunzi onsundu kuya kokuluhlaza okotshani. Amaxoxo aseMelika akhetha indawo enomswakama njengasehlathini, izimfunda, nezingadi, lapho engathola khona inala yezinambuzane angadla kuzo.

Umjikelezo Wokuphila Othakazelisayo wamaToad aseMelika

Njengazo zonke izilwane eziphila emanzini nasezweni, amaToad aseMelika abhekana nomjikelezo wokuphila oyinkimbinkimbi ohlanganisa izigaba eziningana ezihlukene. Lo mjikelezo wokuphila uqala ngokubekela amaqanda, abe esevundiselwa ngaphandle ngeduna. Lawa maqanda akhula abe ama-tadpoles, agcina eshintshile abe amaxoxo amadala. Isiteji sikanoshobishobi siyathakazelisa ikakhulukazi njengoba simele isikhathi esibalulekile sokukhula nokuthuthuka kwalezi zilwane ezihlala emanzini nasemanzini.

Izigaba Zokukhula: Ukusuka Emaqandeni kuya Kuma Tadpoles

Oshobishobi baseMelika bachanyuselwa emaqandeni phakathi nezinsuku ezimbalwa bese bevela njengezilwane ezincane ezingenamilenze. Kulesi sigaba, bathembele esikhwameni sabo se-yolk ukuze uthole ukudla okunomsoco. Njengoba bekhula, oshobishobi bakha ama-gill angaphandle, abenza bakwazi ukukhipha umoya-mpilo emanzini. Ngokuhamba kwesikhathi, imizimba yabo iba yinde, futhi imisila igqama kakhulu. Lolu shintsho lubalungiselela isigaba esilandelayo somjikelezo wabo wempilo: i-metamorphosis.

Izinto Ezithonya Ubukhulu Bama-American Toad Tadpoles

Kunezici ezimbalwa ezingaba nomthelela kusayizi woshobishobi baseMelika. Isici esisodwa esibalulekile izakhi zofuzo, njengoba ama-tadpoles ngamanye angase azuze izakhi zofuzo ezibeka kusengaphambili ukuthi zibe zinkulu noma zibe zincane ngosayizi. Ukwengeza, izici zemvelo ezifana nezinga lokushisa, ikhwalithi yamanzi, nokutholakala kokudla nakho kungaba nomthelela ekukhuleni kwe-tadpole. Kubalulekile ukuqaphela ukuthi lezi zici zivame ukuxhumana, okuholela ezinhlobonhlobo zobukhulu phakathi kwenani labantu.

Iqhaza Lezofuzo Ekunqumeni Usayizi We-tadpole

I-Genetics idlala indima ebalulekile ekunqumeni ubukhulu boshobishobi baseMelika. Ucwaningo selukhombisile ukuthi izakhi zofuzo ezithile zingaba nomthelela emazingeni okukhula kanye nosayizi wonkana. Isibonelo, ama-tadpole anokwehluka okuthile kofuzo angase abonise izinga lokukhula ngokushesha futhi afinyelele osayizi abakhulu uma kuqhathaniswa nozakwabo. Lo mehluko wezakhi zofuzo ungaba nomthelela ekuhlukeni kosayizi obonwa phakathi kwenani lama-tadpoles aseMelika.

Izimo Zemvelo kanye Nokuthuthukiswa Konoshobishobi

Ngaphezu kwezakhi zofuzo, izici zemvelo nazo zidlala indima ebalulekile ekuthuthukisweni nasekukhuleni konoshobishobi baseMelika. Izinga lokushisa lamanzi lingenye yezinto ezinjalo ezingaba nomthelela omkhulu ekukhuleni kwe-tadpole. Amazinga okushisa afudumele ngokuvamile asheshisa ukukhula kwe-tadpole, okuholela kumasayizi amakhulu. Ngokuphambene, amazinga okushisa abandayo angehlisa izinga lokukhula futhi abangele ama-tadpoles amancane. Ezinye izici zemvelo ezifana nekhwalithi yamanzi, ukutholakala kokudla, kanye nokuncintisana ngezinsiza nakho kungaba nomthelela kusayizi we-tadpole.

Ukudla Okunomsoco kanye Nomthelela Wako Ekukhuleni Kwe-Tadpole

Ukudla okunomsoco kuyisici esibalulekile esinomthelela ekukhuleni kanye nobukhulu boshobishobi baseMelika. Oshobishobi badla ukhula ngokuyinhloko, badla ulwelwe kanye ne-detritus ekhona ezindaweni zabo zokuhlala emanzini. Ukutholakala nekhwalithi yale mithombo yokudla kungaba nomthelela omkhulu emazingeni azo okukhula. Oshobishobi abafinyelela ukudla okuyinala nokunomsoco maningi amathuba okuthi bafinyelele osayizi abakhulu uma kuqhathaniswa nalabo abanemithombo yokudla elinganiselwe. Ukudla okunomsoco okunothe ngamaprotheni nezinye izakhamzimba ezibalulekile kubalulekile ekukhuleni kwe-tadpole.

Ukuqhathanisa Usayizi Omaphakathi Woshobishobi BaseMelika Nezinye Izinhlobo

Uma uqhathanisa usayizi omaphakathi we-American Toad tadpoles nezinye izinhlobo zezilwane, kubalulekile ukucabangela kokubili ukuhluka phakathi ne-intra-species. Phakathi kwezinhlobo ezahlukene zama-tadpoles, kungaba khona umehluko omkhulu ngobukhulu ngenxa yokuguquguquka kwezinto kanye nezici zemvelo. Ukwengeza, phakathi kwezinhlobo ezifanayo, ubukhulu be-tadpole bungahluka ngokuya ngendawo, izimo zemvelo, nezici zofuzo. Ngakho-ke, kubalulekile ukucabangela lezi zici lapho uqhathanisa.

Ukufunda usayizi weTadpole Ngezinjongo Zokongiwa

Ukuqonda ubukhulu obuyisilinganiso boshobishobi baseMelika kunemithelela ebalulekile emizamweni yokonga. Ukuqapha usayizi we-tadpole kunganikeza ukuqonda okubalulekile kwezempilo kanye nokuguquguquka kwabantu be-American Toads ezindaweni ezahlukene. Izinguquko kusayizi we-tadpole omaphakathi ngokuhamba kwesikhathi zingakhombisa ukushintsha kwezimo zemvelo noma imithelela yabantu ezindaweni zabo zokuhlala. Ngokutadisha usayizi we-tadpole, abacwaningi bangaba neqhaza ekongiweni nasekuphathweni kwenani le-American Toad.

Indlela Abacwaningi Abalinganisa Ngayo Ubukhulu Bama-American Toad Tadpoles

Ukuze balinganise ubukhulu boshobishobi baseMelika, abacwaningi ngokuvamile basebenzisa i-caliper noma irula ukuze balinganise ubude boshobishobi. Lokhu kwenziwa ngokubeka ithuluzi lokulinganisa eduze komzimba we-tadpole, kusukela ekugcineni kwekhala kuye ekugcineni komsila. Kwezinye izimo, izilinganiso zesisindo zingase futhi zithathwe ukuze kuhlolwe ukukhula nokuthuthukiswa kwama-tadpoles. Lezi zilinganiso zingafaniswa namazinga osayizi amisiwe noma zisetshenziselwe ukulandelela ukukhula kwe-tadpole ngayinye ngokuhamba kwesikhathi.

Isiphetho: Ukwazisa Ukwehlukahlukana Kobukhulu Bamaxoxo AseMelika

Sengiphetha, usayizi ojwayelekile wama-tadpoles aseMelika uthonywa inhlanganisela yezinto zofuzo kanye nemvelo. Ukuqonda lezi zici nokusebenzisana kwazo kunganikeza ukuqonda okubalulekile ekuthuthukisweni nasekukhuleni kwalezi zidalwa ezithakazelisayo. Ngokutadisha usayizi we-tadpole, abacwaningi bangaba neqhaza emizamweni yokongiwa kwemvelo futhi bathole ukuqonda okungcono kwezempilo namandla okuguquguquka kwabantu be-American Toad. Ngakho-ke, masithokozele ukuhlukahluka kobukhulu bonoshobishobi baseMelika, njengoba bemelela ingxenye ebalulekile yomhlaba wethu wemvelo.