Mary Allen
Gabatarwa: Wadanne dabbobi ne ba su da gashi?
Gashi alama ce ta dabbobi da yawa, amma ba duka halittu ba ne ke samun albarka da gashin gashi. Wasu dabbobi ba su da gashi gaba ɗaya, yayin da wasu suna da madadin sutura kamar ma'auni, fuka-fukai, ko harsashi. Fahimtar abin da dabbobi ba su da gashi zai iya taimaka mana mu fahimci bambancin rayuwa a duniya.
Kifi: Dabbobin ruwa marasa gashi
Kifi na ɗaya daga cikin ƙungiyoyin dabbobi daban-daban a duniya, tare da nau'ikan nau'ikan sama da 30,000. Duk da wannan bambancin, duk kifaye suna raba hali ɗaya: ba su da gashi. Madadin haka, suna da ɗigon ƙoƙon ƙoƙon ƙoshin lafiya wanda ke kare fatar jikinsu kuma yana taimaka musu tafiya cikin ruwa yadda ya kamata. Wasu kifaye, kamar sharks, suna da ma'aunin ma'auni waɗanda ke yin irin wannan manufa.
Amphibians: Halittu masu siriri da babu Jawo
Amphibians rukuni ne na dabbobi masu sanyi waɗanda galibi suke kashe wani ɓangare na rayuwarsu a cikin ruwa da wani ɓangare a ƙasa. Wannan rukunin ya haɗa da kwadi, kwadi, salamanders, da sabo. Ba kamar dabbobi masu shayarwa ba, amphibians ba su da gashi ko gashi. Maimakon haka, suna da ɗanɗano, slim fata wanda ke taimaka musu su sha iskar oxygen kuma su kasance cikin ruwa. Wasu amphibians suna da faranti na kasusuwa ko kashin baya a fatar jikinsu don kariya.
Dabbobi masu rarrafe: Fatar da ba ta da gashi
Dabbobi masu rarrafe wani rukuni ne na dabbobi masu sanyi waɗanda ba su da gashi. Maimakon haka, suna da sikeli da aka yi da keratin, abu ɗaya ne da ke haɗa gashinmu da kusoshi. Waɗannan ma'auni suna ba da kariya daga mafarauta kuma suna taimakawa dabbobi masu rarrafe don daidaita yanayin zafin jikinsu. Wasu dabbobi masu rarrafe, kamar macizai, suna zubar da ma'auninsu lokaci-lokaci yayin da suke girma.
Tsuntsaye: Abokan fuka-fuki ba tare da Jawo ba
Tsuntsaye dabbobi ne masu dumin jini waɗanda suka samo asali daga dinosaur. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Maimakon haka, suna da gashin fuka-fukai, wanda aka yi da keratin kamar ma'auni mai rarrafe. Tsuntsaye na taimaka wa tsuntsaye su tashi, daidaita yanayin jikinsu, kuma suna jawo hankalin ma'aurata. Tsuntsaye suna da nau'ikan gashin fuka-fukai iri-iri, daga gashin fuka-fukan da ba su da kyau zuwa gashin fuka-fukan tashi.
Insects: ƙananan halittu marasa gashi
Kwari su ne mafi bambancin rukuni na dabbobi a duniya, tare da fiye da miliyan daya sanannun nau'i. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Madadin haka, suna da ƙaƙƙarfan exoskeleton da aka yi da chitin, abu mai ƙarfi, mai karewa. Har ila yau, kwari suna da ƙafafu, fuka-fuki, da eriya, waɗanda ke taimaka musu motsi da fahimtar yanayin su.
Mollusks: Dabbobi masu laushi marasa gashi
Mollusks rukuni ne na dabbobi daban-daban waɗanda suka haɗa da katantanwa, clams, dorinar ruwa, da squid. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Maimakon haka, suna da jiki mai laushi, mai nama wanda wani harsashi mai ƙarfi ya kiyaye shi ko kaɗan. Wasu mollusks, kamar dorinar ruwa, na iya canza launi da nau'in fatar jikinsu don haɗawa da kewayen su.
Arachnids: Halittu masu rarrafe masu rarrafe ba tare da Jawo ba
Arachnids rukuni ne na dabbobi masu ƙafa takwas waɗanda suka haɗa da gizo-gizo, kunamai, da kaska. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Maimakon haka, suna da ƙaƙƙarfan exoskeleton da aka yi da chitin, kamar kwari. Wasu arachnids, kamar gizo-gizo, suna jujjuya siliki don yin yanar gizo ko nannade ganima.
Crustaceans: Dabbobin da ba su da gashi
Crustaceans rukuni ne na dabbobi waɗanda suka haɗa da kaguwa, lobsters, da shrimp. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Maimakon haka, suna da ƙaƙƙarfan exoskeleton da aka yi da chitin, kamar kwari da arachnids. Wasu crustaceans, kamar kaguwa, na iya sabunta gaɓoɓin da suka ɓace.
Echinoderms: Halittu masu laushi waɗanda ba su da gashi
Echinoderms rukuni ne na dabbobi waɗanda suka haɗa da taurarin teku, urchins na teku, da cucumbers na teku. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Maimakon haka, suna da wuya, exoskeleton spiny wanda ke kare jikinsu mai laushi. Wasu echinoderms, kamar taurarin teku, na iya sake farfado da makamai da suka ɓace.
Tsutsotsi: Dabbobin da ba su da gashi
Tsutsotsi rukuni ne na dabbobi daban-daban waɗanda suka haɗa da tsutsotsi na ƙasa, leech, da tsutsotsi. Ba kamar dabbobi masu shayarwa ba, ba su da gashi ko gashi. Maimakon haka, suna da jiki mai laushi, siriri wanda ke taimaka musu ta hanyar ƙasa, ruwa, ko wasu wurare. Wasu tsutsotsi, kamar leets, suna da tsotsa ko jaws don taimaka musu su ci abinci.
Kammalawa: Dabbobi iri-iri ba tare da gashi ba
Gashi na iya zama ma'anar siffa ta dabbobi da yawa, amma ba lallai ba ne don rayuwa. Dabbobi da yawa sun ƙirƙiro madadin sutura, kamar ma'auni, fuka-fukai, ko bawo, waɗanda ke yin ayyuka iri ɗaya. Ta hanyar fahimtar abin da dabbobi ba su da gashi, za mu iya fahimtar bambancin rayuwa a duniya.