Macijin marsh ɗin da aka tagu (Regina alleni) na cikin ƙa'idodin izgili ne.
Rarraba macijin fadama.
An rarraba macijin fadama a ko'ina cikin yawancin Florida banda yankuna mafi yamma.
Mazaunin macijin marsh.
Macijin fadama maciji ne mai ban al'ajabi wanda yake samuwa a cikin ruwa mai tsafta da sannu a hankali tare da ciyayi masu yawo da yawa, kamar gulbin ruwa na cypress da wuraren kogin. Sau da yawa akan same shi a tafkunan ruwa inda tsiron ruwa yake girma. Adadin macizai da yawa suna rayuwa a tsakanin hyacinth na ruwa da katifu masu shuke-shuke masu iyo, inda jikinsu ya cika ko wani ɓangare sama da ruwa. Hakanan ruwan hyacinth na ruwa yana kama da kifin kifin saboda yawan shuke-shuke masu ruɓuwa.
Bugu da kari, ciyawar ciyawar ruwa mai yawa tana ba da kariya daga masu farautar macizai masu taguwar ruwa. Babban macizai a cikin irin wannan magudanan ruwa yana da alaƙa da ruwa, wanda ke da yanayin tsaka tsaki da kuma ƙarancin abun cikin narkar da alli. Waɗannan sharuɗɗan sun taƙaita haɓakar haɓakar ɓarkewar ɓawon burodi na masarufi waɗanda dabbobi masu rarrafe ke rayuwa a kansu. Macizan daussi waɗanda suka ɓace a ɓoye a cikin ramuka na ɓarna a lokacin rani na hunturu da na bazara, haka kuma a cikin ramuka na cikin ruwa da ke cike da ciyawar ruwa.
Alamomin waje na macijin dausayi.
Macijin marsh din mai duhu yana da duhu mai zaitun-mai launin ruwan kasa, a gefen gefen gefensa wanda ratsi masu tsayi masu launin ruwan kasa guda uku suna tafiya tare da tsawonsa. Maƙogwaron rawaya ne, tare da layuka da yawa na tabo a tsakiya. Wannan nau'in macijin ya banbanta da sauran nau'ikan a cikin sikeli masu santsi, ban da ma'aunin keled a cikin maza, wanda yake a bayanta tare da wutsiya zuwa cloaca.
Macizan daushen gulbin ruwa sune mafi kankanta a jinsin halittar Regina. Mutane fiye da 28.0 cm a tsayi ana ɗaukar su manya. Macizan manya suna girma daga 30.0 zuwa 55.0 cm, kuma matsakaicin nauyinsu gram 45.1. Manya-manyan samfuran suna da tsayin jiki na 50.7 da 60.6 cm Macizai masu ƙanƙantar da hankali masu ƙanƙan da kai sunkai 3.1 g tare da tsayin jikinsu yakai 13.3 mm, kuma sun ɗan bambanta da launi kaɗan daga manya.
Maciji masu daɗa igiyar ruwa waɗanda ke da raƙuman ruwa suna da tsarin tsarin kwanyar, wanda ke ba da damar ciyar da su na musamman. Kokon kansu hadadden tsarin kasusuwa ne kuma yana bada shaidar kwarewar wannan nau'in. Taguwar macijin da aka yalwata taɓarɓusasshiyar ƙwaryar kifin kifaye, suna da keɓaɓɓu, hakoran hakora waɗanda aka dace da su don riƙe ƙwarjin igiyar kifin. Suna ciyarwa ba kawai a kan naman kifin da aka narkar da shi da kwasfa mai laushi ba. Maza maza na wannan nau'in macizai sun fi girman jiki kuma sun girmi mata.
Sake bugun macijin dausayi.
Macizan gulbin ruwa masu yaduwa suna haifuwa ta hanyar jima'i, amma ana samun bayanai kaɗan akan al'adar jima'i da halayyar haihuwa a cikin dabbobi masu rarrafe. Ya kamata a yi jima'i a lokacin bazara. Wannan nau'in yana da rai. A cikin mahaifa, ana samun matasa macizai daga hudu zuwa goma sha biyu (amma galibi galibi shida). Sun bayyana a cikin ruwa tsakanin Yuli zuwa Satumba. Bayan shekaru 2, suna ba da offspringa witha masu tsayin jiki na tsawon cm 30. Ba a san tsawon rayuwar macizai na ɓarna a cikin ɗabi'a ba.
Halin macijin fadama.
Macizan daɗaɗɗen ɓaɓɓugar ruwa sukan ɓoye cikin hasken rana kai tsaye a lokacin ranakun sanyi kuma su kasance cikin inuwa ko ƙarƙashin ruwa yayin kwanakin zafi.
Sun fi aiki da farauta sosai a lokacin bazara da farkon bazara, a cikin watannin sanyi ba su aiki.
Suna samun abinci da daddare da kuma lokacin dare. Ana samun sankarai ta hanyar motsin su, tare da daidaito mai ban mamaki, yana tantance wurin wanda aka azabtar. Idan akwai wata barazana ga rayuwa, macizai masu duma masu ɓoye suna ɓoyewa a ƙarƙashin ruwa. Ba kamar sauran macizan Regina ba, da wuya su yi cizo. Koyaya, a cikin yanayi na musamman, macizai masu daushin fadama suna sakin fitowar al'aura daga cloaca. Sakin kayan mai kamshi yana tsoratar da wasu dabbobi masu shayarwa. Da farko dai, macijin yana kokarin tsoratar da abokan gaba, yana bude bakinsa sosai, yana kaɗawa tare da ɗaga bayansa. Sannan yana nuna halayyar karewa ta hanyar murɗa jujjuyawar jiki zuwa cikin ƙwallo. A wannan yanayin, macijin yana ɓoye kansa a cikin madaukai kuma yana daidaita jikin daga ɓangarorin.
Ciyar da macijin marsh.
Tsintsaye macizan dausayi sune mafi ƙwarewar dabbobi masu rarrafe masu cin naman crayfish. Manya suna ciyarwa kusan kawai akan kifin kifin Procambarus. Ba kamar sauran nau'o'in macizai ba, macizai masu saɓar fuka ba su fifita masu crustace a wani mataki na narkar da su; sun haɓaka haɓakar ƙirar halittu game da cin kifin kifin da aka rufe da chitin mai wuya.
Ana samun nau'ikan kifin kifin biyu da ke zaune a cikin Florida a cikin abincin - Procambarus fallax da Procambarus alleni.
Abincin ya kunshi amphibians da kwari irin su beetles, cicadas, isoptera, ciyawa da butterflies. Snananan macizai waɗanda ba su wuce 20.0 cm ba da tsayi suna cin crustaceans na decapod (galibi shrimps na dangin Palaemonidae), yayin da mutane masu girma fiye da 20.0 cm suka daɗe suka lalata larvae. Hanyar zuwa farauta yayin cin abinci ya dogara da girman wanda aka azabtar dangane da macijin. Ana sarrafa Decapods a hankali, ba tare da la'akari da girman abin farauta ba, yayin da amphibians ke haɗiye daga kai, ban da ƙananan ƙwayoyin cuta, waɗanda macizai ke ci daga wutsiya. Manyan macizan daushen maciji suna kama kifin kifin a ciki, suna sanya kayan abincinsu ta hanyar kwanya, ba tare da la'akari da girmansu ko matakin narkar da shi ba.
Matsayin halittu na taguwar marsh.
Macizan Crayfish da suka yayyaga macizai masu cin nama akan halittu da yawa. Suna rayuwa ne a matsayin keɓaɓɓen mafarauci a cikin halittun cikin ruwa kuma suna taka muhimmiyar rawa wajen kiyaye dorewar tsarin halittu. Suna shafar yawan kifin kifin, kawai a wuraren da yawan macizai ke da yawa.
A cikin wasu sassan ruwa, macizan fadama wadanda ba su taka muhimmiyar rawa wajen daidaita yawan kifayen kifayen, wanda lalacewarsa na iya haifar da mummunan sakamako, tun da crustaceans, ta hanyar cin detritus, suna taka muhimmiyar rawa a tsarin abinci mai gina jiki a cikin tsarin ruwa. Taguwar macizan da aka yayyaga sun zama ganima ga masu farauta, tsuntsaye, dabbobi masu shayarwa har ma da kifin kifin. Cutar daji kan ci maciji sabbin haihuwa. Ana farautar manyan macizai ta hanyar kwatancen macizai, raccoons, kogin otters, heron.
Matsayi na kiyayewa na macijin fadama.
Yawan mutanen da taguwar macijin daɗaɗaɗɗun ruwa ana ɗaukarsu tabbatattu a duk faɗin kewayon. Adadin mutane a Kudancin Florida na raguwa saboda sauye-sauye a tsarin ruwan wasu ruwa. Canje-canjen cututtukan ɗan adam na shafar yankunan da suka dace da macijin marsh, musamman saboda lalata ɗumbin da ke cikin hyacinth na cikin ruwa. IUCN ta fifita macijin daushen fadamar a matsayin Least Damuwa.
