Wadatacce
- Menene haifuwar dabbobi?
- Nau'o'in hayayyafar dabbobi
- Haihuwar jima'i a cikin dabbobi
- Ciki na ciki a cikin dabbobi
- Haɗin waje a cikin dabbobi
- Haihuwar jima'i a cikin dabbobi
- Dabbobi tare da haifuwar asexual
- Madadin kiwo a cikin dabbobi
Duk mai rai a doron ƙasa dole ne ya hayayyafa dawwamar da jinsin. Duk da wannan, ba duka ke cin nasara ba ko ba lallai ba ne duk wani nau'in jinsin ya sake haihuwa. Misali, dabbobin da ke rayuwa a cikin ƙungiyoyi ana ba su wani matsayi a cikin ƙungiyar kuma mutum ɗaya ko kaɗan ne kawai ke haifuwa. Dabbobin da suka lalace, biyun, za su nemi kuma su yi fafutukar neman 'yancin su na hayayyafa da kuma raya kwayoyin halittar su.
Wani babban rukuni na dabbobi suna yin wani dabarar haihuwa, inda kasancewar mata da maza ba dole ba ne don haifuwa. Za mu yi magana game da su duka a cikin wannan labarin na PeritoAnimal. Kuna son ƙarin sani game da kiwon dabbobi? Ci gaba da karatu!
Menene haifuwar dabbobi?
Sake haifuwa a cikin dabbobi shine tsari mai rikitarwa na canje -canjen hormonal wanda ke haifar da canjin jiki da ɗabi'a a cikin mutane don cimma manufa ɗaya: don haifar da zuriya.
Don wannan, canji na farko da dole ne ya faru shine balagar jima'i na dabbobi. Wannan gaskiyar tana faruwa a wani lokaci a rayuwar kowane mutum, dangane da nau'in su. Duk yana farawa da kafa gabobin jima'i da samuwar gametes, wanda ake kira spermatogenesis a cikin maza da oogenesis a cikin mata. Bayan wannan lamarin, an mai da hankali kan wani ɓangaren rayuwar dabbobin bincika abokin tarayya don kafa haɗin gwiwa wanda zai kai su ga haihuwa.
Koyaya, akwai dabbobin da, duk da cewa suna da waɗannan gabobin, a wasu lokuta kuma a ƙarƙashin takamaiman yanayi, basa amfani da su. An san wannan da haifuwa ta asali a cikin dabbobi.
Nau'o'in hayayyafar dabbobi
A yanayi akwai nau'o'in haifuwa da yawa a cikin dabbobi. Kowannensu yana da tabbatattun sifofi da ke sa su bambanta da juna. A general sharuddan, za mu iya ce cewa iri na haifuwar dabbobi su ne:
- Haihuwar jima'i a cikin dabbobi
- Haihuwar jima'i a cikin dabbobi
- Madadin haifuwa a cikin dabbobi
Na gaba, za mu yi magana kuma mu ba da misalan kowannen su.
Haihuwar jima'i a cikin dabbobi
Haihuwar jima'i a cikin dabbobi ana rarrabe shi da samun mutum biyu, mace daya da namiji daya. Mace za ta samar da kwai da aka samar ta hanyar oogenesis a cikin kwai. Namiji kuma, zai haifar da maniyyi a cikin kwakwalensa, waɗanda galibi ana siyan su da ƙanana da samun motsi sosai. Wadannan maniyyi suna da aikin takin kwai da ƙirƙirar zygote wanda a hankali zai haɓaka don ƙirƙirar cikakken mutum.
Haɗuwa na iya faruwa a ciki ko waje jikin mace, da aka sani da takin ciki ko na waje, dangane da nau'in.
Ciki na ciki a cikin dabbobi
A lokacin hadi na ciki, maniyyi yana wucewa ta cikin tsarin haihuwa na mace don neman kwai. Daga nan mace za ta iya raya zuriya a cikin ta, kamar dabbobin da suke rayuwa, ko a waje. Idan ci gaban amfrayo yana faruwa a waje da jikin mace, muna magana ne akan dabbobin oviparous, waɗanda ke sa ƙwai.
Haɗin waje a cikin dabbobi
A akasin wannan, dabbobi tare da hadi na waje saki gametes ɗin su cikin muhalli (yawanci na ruwa), duka ƙwai da maniyyi, da hadi suna faruwa a waje da jiki.
Abu mafi mahimmanci na wannan nau'in haifuwa shine cewa mutanen da aka haifa suna ɗauke da kwayoyin halittar su kayan gado daga iyaye biyu. Sabili da haka, haɓakar jima'i yana ƙaruwa da yuwuwar rayuwa na wani nau'in a cikin dogon lokaci, godiya ga canjin halittar da yake samarwa.
Haihuwar jima'i a cikin dabbobi
Haihuwar ɗan luwaɗi a cikin dabbobi yana halinsa rashin wani mutum na kishiyar jinsi. Sabili da haka, zuriya iri ɗaya ce ga mutum mai kiwo.
Bugu da ƙari, haifuwa ba dole ba ne ya haɗa da ƙwayoyin ƙwayoyin cuta, wato, ƙwai da maniyyi; a mafi yawan lokuta, su ne somatic sel iya rarrabuwa. Kwayoyin Somatic sune sel na al'ada a cikin jiki.
Nau'in Haihuwar Asexual a Dabbobi
Na gaba, zamu ga cewa akwai nau'ikan iri iri na haifuwa a cikin dabbobi:
- gemmulation ko gemmation. Wani takamaiman nau'in tantanin halitta yana tara ƙwayoyin abinci kuma, a ƙarshe, yana rarrabewa kuma yana haifar da ƙwayar halitta wanda ke haifar da sabon mutum ...
- budding. A saman dabbar, wani rukunin sel ya fara girma, yana ƙirƙirar sabon mutum wanda zai iya rabuwa ko kasancewa kusa da asalin.
- rarrabuwa: yana daya daga cikin nau'in haifuwa da dabbobi ke yi kamar kifin taurari ko masu tsara shirin. Ana iya rarrabe jikinku zuwa sassa da yawa, kowannensu yana haifar da sabon mutum.
- Parthenogenesis. Wannan, koda ba takin ba, na iya haɓakawa da ƙirƙirar mace mace ɗaya da mahaifiyar.
- Gynogenesis. Namiji yana ba da gudummawar maniyyinsa, amma wannan ana amfani da shi ne kawai azaman abin ƙarfafawa don haɓaka ƙwai; a zahiri bai ba da gudummawar kayan sa na asali ba.
Dabbobi tare da haifuwar asexual
Wasu daga cikin dabbobin da ke haifar da haihuwa da za mu iya samu sune kamar haka:
- Hydra
- Wasps
- Kifin kifi
- anemones na teku
- ruwan teku
- cucumbers na teku
- soso na teku
- amoebas
- salamanders
Madadin kiwo a cikin dabbobi
Daga cikin dabbobi, ko da yake ba na kowa ba ne, muna kuma iya samun madadin haifuwa. A lokacin wannan dabarar haihuwa, da haifuwa ta jima'i da asexual ta haɗu, ko da yake ba lallai ba ne.
Irin wannan haifuwa ta zama ruwan dare gama duniya. A cikin dabbobi yana da wuya, amma ana iya gani a wasu ƙungiyoyin, kamar tururuwa da ƙudan zuma, watau, a cikin dabbobi masu rarrafe. Madadin dabarun kiwo a cikin dabbobi zai dogara ne akan kowane nau'in.
Idan kuna son karanta ƙarin labarai makamantansu Haihuwar dabbobi,, muna ba da shawarar cewa ku shiga ɓangaren Curiosities na duniyar dabbobi.