Itacen ruwan katantanwa na helena (Latin Anentome helena) asalinsa kudu maso gabashin Asiya ne kuma galibi ana kiransa azaman mai farauta ko mai cin amana. Sunayen ilimin kimiyya sune Anentome helena ko Clea helena.
Wannan rarrabuwa ya dogara ne akan jinsi biyu - Clea (Anentome) na jinsin Asiya da Clea (Afrocanidia) na jinsunan Afirka.
Babban fasalin wannan nau'in shine suna cin wasu katantanwa, ma'ana, mai farauta ne. Abin da masanan ruwa suka koya don amfani da ƙunshin don rage ko kawar da wasu nau'in katantanwa a cikin akwatin kifaye.
Rayuwa a cikin yanayi
Yawancin Helens suna son ruwa mai gudana, amma suna iya rayuwa a cikin tabkuna da tafkuna, wanda mai yiwuwa shine dalilin da yasa suke dacewa da yanayin akwatin kifaye. A yanayi, suna rayuwa akan yashi mai yashi ko silty.
A dabi'a, akwai masu farauta waɗanda ke ciyar da katantanwa masu rai da gawar, kuma wannan shine ya sanya su shahara sosai a cikin akwatin kifaye.
Harsashin yana da kwaskwarima, haƙarƙari; thearshen harsashin galibi baya nan. Harsashin rawaya ne, tare da madaidaiciyar launin ruwan kasa mai launin ruwan kasa.
Jiki yana da launin toka-kore. Matsakaicin girman harsashi 20 mm, amma yawanci kusan 15-19 mm.
Tsammani na rayuwa shekaru 1-2 ne.
Yana zaune a Indonesia, Thailand, Malaysia.
Adana cikin akwatin kifaye
Helens suna da wuyar gaske kuma suna da sauƙin kulawa.
Kamar sauran katantanwa, zasu ji baƙin ciki a cikin ruwa mai laushi ƙwarai, saboda suna buƙatar ma'adanai don kwansonsu. Kodayake sigogin ruwa basu da mahimmanci, ya fi kyau a ajiye shi a cikin ruwa na matsakaiciyar tauri ko tauri, tare da pH na 7-8.
Waɗannan katantanwa masu tsaftataccen ruwa ne kuma basa buƙatar ruwan gishiri. Amma kuma sun haƙura da ɗan gishiri.
Wannan jinsi ne wanda aka binne shi a cikin ƙasa, kuma yana buƙatar ƙasa mai laushi, yashi ko tsakuwa mai kyau (1-2 mm), misali. ...
Hakanan zasu kasance a shirye don yin kiwo a cikin akwatin kifaye tare da ƙasa mai laushi, saboda yara kanana ana binne su kai tsaye bayan haihuwa sannan kuma mafi yawan lokacinsu a ƙasa.
Hali a cikin akwatin kifaye:
Ciyarwa
A dabi'a, abincin ya kunshi gawa, da abinci mai rai - kwari da katantanwa. A cikin akwatin kifaye, suna cin katantanwa da yawa, misali - nat, coils, melania. Koyaya, Melania ita ce mafi munin ci.
Babban katantanwa kamar su manya neretina, ampullary, mariza ko babban tylomelanias basa cikin haɗari. Helena kawai ba za ta iya kula da su ba. Suna farauta ta hanyar lika bututu na musamman (a ƙarshen ƙarshensa akwai buɗe baki) a cikin kwanson katantanwa da tsotsa a zahiri.
Kuma da manyan katantanwa, ba za ta iya maimaita wannan dabarar ba. Hakanan, kifi da jatan lande, sun yi mata sauri, kuma wannan katantanwa ba ta dace da farautar shrimp ba.
Sake haifuwa
Helens yana yin sauƙi a cikin akwatin kifaye, amma yawan katantanwa galibi ƙananan ne.
Waɗannan sune katantanwa tsakanin maza da mata, ba matayen maza ba, kuma don samun nasarar kiwo ya zama dole a adana katantanwan katantanwa don haɓaka damar haɓaka daidaikun maza da mata.
Samun jimawa a hankali ne kuma yana iya ɗaukar awanni. Wasu lokuta wasu katantanwa suna haɗuwa da ɗayan kuma duk rukunin suna manne tare.
Mace tana yin kwai ɗaya akan saman wuya, duwatsu ko itacen busasshiyar itace a cikin akwatin kifaye.
Kwai yana bunkasa a hankali, kuma idan soyayyen ya kyankyashe, sannan ya fadi a kasa nan da nan ya binne shi kuma ba za ku ganshi ba tsawon watanni.
Kimanin lokaci tsakanin bayyanar ƙwai da soyayyen da aka toya a cikin akwatin kifaye kusan watanni 6 ne. Toya fara bayyana a bayyane lokacin da ta kai girman kusan 7-8 mm.
Daga cikin katantanwa da aka kyankyashe, tsirarun tsira sun rayu har zuwa girma.
A bayyane, dalili shine cin naman mutane, kodayake manya ba su taɓa yara ba, kuma, a wani fanni, a gasar abinci a lokacin haɓakar ƙasa.
Karfinsu
Kamar yadda aka riga aka ambata, yana da haɗari kawai ga ƙananan katantanwa. Game da kifaye, suna cikin aminci gaba ɗaya, katantanwa ba zata iya kai hari ga kifi mai tsananin gaske ba har ya ci wanda ya mutu.
Shrimp sun yi sauri da sauri don wannan katantanwa, sai dai idan narkakken yana iya zama cikin haɗari.
Idan kun kiyaye nau'ikan nau'ikan jatan lande, to zai fi kyau kar ku kasada ku raba su da helen. Kamar kowane katantanwa, zai ci ƙwan kifi idan zai iya zuwa wurin. Don soya, yana da aminci, idan har ya riga ya zama briskly motsi.
Dangane da lura da masanan ruwa, helena na iya rage ko ma lalata yawan wasu katantanwa a cikin akwatin kifaye.
Tunda babu wani daga cikin mawuyacin hali yawanci yana da kyau, aikinku shine daidaita lambobi don kula da daidaitattun nau'in katantanwa a cikin tankinku.
