Yadda za a ƙayyade jima'i na kunkuru: yaro ko yarinya?

Ruwa da kunkuru sun dade sun kasance abin fi so ga iyalai da yawa. Mafi sau da yawa, a lokacin zabar sunan barkwanci, masoya masu rarrafe suna fara mamakin wanda ke zaune tare da su: yaro ko yarinya? Akwai alamomin ilimin lissafi da yawa waɗanda za a iya bambanta mace da namiji.

Yadda ake sanin jima'i na kunkuru

Yana yiwuwa a dogara da gaske ƙayyade jima'i da shekarun kunkuru a gida kawai bayan ƙananan kunkuru sun isa balaga. A karkashin yanayi na dabi'a, balaga yana faruwa a cikin shekaru 6-8. Kunkuru na cikin gida suna haɓaka da sauri sosai, don haka zaku iya bambanta halayen jima'i kai tsaye a cikin dabbobi masu rarrafe masu shekaru 2-5 tare da tsawon harsashi na 9-11 cm. Kar a amince da masu siyar da rashin mutunci waɗanda ke samun bambance-bambancen jinsi a cikin ƙananan jarirai.

Gano ainihin shekarun dabbobi masu rarrafe yana da matukar matsala. Ba a yin kiwo da kunkuru na ƙasa ta hanyar wucin gadi, an kama su daga mazauninsu na halitta kuma an kawo su Rasha. An haifi kunkuru masu jajayen kunne a Turai, amma adadin girma ya dogara ne kacokan akan yanayin tsarewa. Yana da kusan ba zai yiwu ba don ƙayyade shekarun kunkuru daga tsawon harsashi, adadin zoben shekara-shekara, da kuma canjin launi na scutes.

Dabbobi masu rarrafe ba su da halaye na jima'i na waje, jima'i na kunkuru an ƙaddara ta siffar harsashi, ƙwanƙwasa, ciki, wutsiya, cloaca. A cikin yanayin asibitin dabbobi, zaku iya gano jima'i na kunkuru ta amfani da hanyoyi daban-daban na bincike: duban dan tayi, x-ray, gwaje-gwajen dakin gwaje-gwaje na gwaje-gwajen jini na hormones. Amma bai kamata ku sanya damuwa da ba dole ba a kan dabba mai ban sha'awa, ba shi da wahala a ƙayyade jima'i na kunkuru ta hanyar nazarin bambance-bambance na waje da halayen halayen mutane na jinsi daban-daban.

Babban alamun ƙaddarar jima'i a cikin kunkuru

Don gano jima'i na dabba, ana ba da shawarar zuwa mataki zuwa mataki kwatanta bambance-bambancen dabi'a a cikin mutane daban-daban na zamani da nau'in. Don fahimtar abin da jima'i da kunkuru ke zaune a cikin terrarium ko akwatin kifaye, yana da kyau a kula da waɗannan halayen jima'i na biyu.

Shell

Zai yiwu a bambanta kunkuru na yaro daga harsashi na yarinya a cikin nau'i na harsashi tare da tsawon akalla 10 cm; kafin su kai girman jima'i, duk kunkuru suna kama da mata. Dole ne mace ta ɗauki ƙwai na 'ya'ya masu zuwa, bi da bi, harsashinta ya fi girma da girma fiye da na namiji masu shekaru ɗaya. An bambanta mazaje ta hanyar kunkuntar siffar "makamai" mai kariya.

Farantin karfe

Plasron shine gefen harsashi, wanda yawancin masu rarrafe suke kira "ciki". Don yin nazari dalla-dalla game da bambance-bambance a cikin cikin dabbobi masu rarrafe, ya zama dole a sanya mutane biyu a bayansu. Kunkuru ba sa son kasancewa a cikin irin wannan matsayi kuma suna ƙoƙarin ciji mai laifin, don haka, tare da wannan hanyar tantance jima'i, ya zama dole a kiyaye matakan tsaro gwargwadon yiwuwa. Kuna iya gane ko kunkuru yana zaune a gida, namiji ko mace, ta siffar filasta. Yanayin ya haifar a cikin dabbobi masu rarrafe bambance-bambancen jima'i da ake bukata don haihuwa. Plasron a cikin 'yan mata yana da fili, yayin da a cikin samari yana da kullun, saboda haka namiji yana riƙe a jikin mace lokacin da ake saduwa da su.

Har ila yau, ya kamata a kula da siffar bayan ciki na dabbar dabba. Mata suna bambanta da siffar zagaye na plastron, maza suna da siffar triangular a cikin ƙananan ɓangaren, wanda ya wajaba don kare wutsiya a lokacin jima'i. An fi bayyana wannan daraja a cikin kunkuru na marsh.

size

Don rarrabe jima'i na kunkuru na gida na iya zama kai tsaye a cikin girman harsashi. Jarirai kusan tsayi iri ɗaya ne da tsayin jiki a lokacin ƙanana, amma bayan balaga, mata suna fara girma sosai. Yana da sauƙin ƙayyade mace lokacin kwatanta kunkuru masu girma na jinsi daban-daban; Namiji a kan bangon mace ya fi dacewa da ƙarami.

Wannan hanyar ba ta dace da ƙaddarar jima'i ba a cikin dabbobi masu rarrafe na daji, maza Galapagos, ƙwanƙarar baki na Afirka ta Kudu, hamada, akwati, kunkuru na laka da rawaya sun fi girma fiye da matan jinsin su.

Tail

Ba shi da wahala a tantance jima'i na kunkuru ta wutsiya idan za a iya kwatanta nau'ikan dabbobi masu rarrafe a lokaci guda. Kunkuru suna da azzakari a cikin wutsiya, don haka yara maza sun bambanta da 'yan mata a cikin wutsiya mai tsayi tare da tushe mai fadi. A cikin wutsiya na mata akwai oviducts, mata suna da gajeren wutsiya mai kyau da kauri tare da tushe mai zurfi. Wani lokaci a lokacin wanka, ko aikin hanji, ko magudin bayan jiki, maza suna sakin kyawawan azzakarinsu, kamar furen fure, daga wutsiya. Idan ka taba shi da hannunka, nan take sashin ya ruguje ya boye baya. Idan an sami wannan alamar, mai shi ba zai ƙara yin shakku game da jinsin dabbar sa ba.

Magudanar ruwa

Hakanan zaka iya duba jima'i na kunkuru ta siffar cloaca - ɓangaren ƙarshen ƙarshen hindgut, wanda ke samuwa a cikin dukan dabbobi masu rarrafe, masu amphibians, tsuntsaye da wasu nau'in kifi da dabbobi masu shayarwa. Yanayin ya ba wa kunkuru mata kyauta tare da kyakkyawan siffar cloaca a cikin nau'i na alamar alama, wanda ke kusa da tushe na ɗan gajeren wutsiya. Maza sun bambanta duka a cikin siffar ɓangaren ƙarshe na hanji, kama da layi mai tsayi, kuma a wurinsa, cloaca a cikin maza yana cikin ƙananan uku na dogon wutsiya.

Claws

Ƙayyadaddun jima'i na kunkuru masu jajayen kunne kuma ana yin su ta hanyar siffar farata na gaba. Kunkuruwan ruwa na maza suna da dogayen faratsu masu ƙarfi don riƙe mazan akan harsashi na mace yayin saduwa. Wannan siffa ce ta mafi yawan mazaje masu rarrafe na ruwa da na ruwa. Amma ban da, yanayi ya ba wa matan katon kunkuru na Afirka da dogayen farauta a kafafunsu, wadanda mata da suka manyanta ke yin jima'i a lokacin kwanciya kwai.

Siffar hanci

Yaran masu jajayen kunnuwa suna da hanci mai kyau da nuni fiye da 'yan matan jinsin su. Bugu da ƙari, ana iya ƙayyade jima'i ta hanyar sautin jajayen ratsi a bayan idanun dabbobi masu rarrafe. Bayan sun balaga a cikin maza, ratsin tsaye yana samun launi mai launin ja mai haske idan aka kwatanta da inuwar inuwa a cikin mata na wannan nau'in.

Hip spurs

Yanayin da aka ba da turtles na ƙasa tare da bambancin jima'i - kasancewar manyan girma na fata a kan cinyoyin ƙafar ƙafar baya. Ana samun ƙwanƙwasa a cikin kunkuru na maza kawai.

Eye launi

Launin ido ba daidai bane nuni na bambancin jima'i na dabbobi masu rarrafe. Kunkuruwan marsh na mata suna da idanu rawaya, yara maza suna da idanu masu ruwan kasa, kunkuru kwalin mace Caroline suna da idanu masu ruwan kasa, maza kuma suna da jajayen idanu. Ana iya amfani da wannan fasalin a cikin jimlar kwatankwacin sauran bambance-bambancen jikin mutum na masu madigo.

halayyar

Dangane da dabi'ar dabbobi masu ban sha'awa, musamman a lokacin balaga, yara maza da mata suna bambanta a kowane nau'in dabbobi masu rarrafe. Yawancin mata suna da sanyin halin kunya, maza suna da sha'awar sha'awa, kwarkwasa da zawarcin yarinyar da suke so. Idan maza da yawa suna da abu iri ɗaya na sha'awa, za su iya fara fadace-fadace na jini, cike da munanan raunuka.

Tsarin tsarin bayanan da aka samu ta hanyar kwatanta duk halayen jima'i yana ba da damar kusan ba za a iya bambanta yarinyar kunkuru daga yaro a lokacin balagagge. Dabbobi masu rarrafe na gida na mata da na maza suna rayuwa kuma suna jin daɗin nasu na dogon lokaci.