Gammarus - ruwa mai ɗaukar ruwa na yau da kullun. Idan kun kama wannan crustacean, da sauri zai zube cikin tafin hannun ku kuma ku yi yaƙi da shi.
Gammaruses suna da jiki mai jujjuyawa, dan kadan an matsa akan bangarorin, jikin yana convex a saman. Idanun waɗannan ɓoyayyun suna da rauni, suna da fasali mai rikitarwa: an karkatar da nau'ikan antennas na farko, biyu na gaba suna baya, yayin da ya fi guntu da na farkon.
Mormonysh, ko gammarus (Gammarus).
Akwai wasu hanyyoyi a jikin nau'i biyu na kafafu thoracic, tare da taimakon gammarus sun kama ganima, kuma ban da haka, suna ba da kariya da kai hari. Maza suna riƙe da haƙarƙarin mace yayin aure. Crayfish suna amfani da nau'i-nau'i na kafafu uku na ciki don yin iyo, kuma tare da taimakon ukun ukun da suka gabata sun yi tsalle. Kafafu masu tsalle-tsalle masu kama da ganye, suna da dumin-baki mai yawa, godiya ga wanda kwarjinin ke amfani da su azaman shuru.
Sakamakon wannan adadin kafafu, amphipods suna iyo da sauri kuma suna yin motsi iri-iri. Suna amfani da ƙafafun tafiya don motsi mai sauri tsakanin tsire-tsire iri daban-daban. Motoci na musamman suna kiyaye ƙananan kayan masarufi daga lalacewa.
Wadannan crustaceans abinci ne na kifi.
Yayin yin iyo, gammarus yana yin motsi da ƙafafun sawu, yayin da nau'i biyu na ƙafafun ƙafafun gaba suna aiki. Gammarus, kodayake ana kiran su amphipods, wannan sunan ba cikakke bane cikakke, tunda suna iyo akan bangarorinsu kawai a kananan kogunan ko kusa da bakin. Kuma idan zurfin al'ada ne, to, suna iyo da bayansu sama. Gammaruses sun zaɓi hanyar motsi, lanƙwasa da kuma kwance girman ciki.
Wadannan muryoyin suna iya tsalle daga cikin ruwa sosai, ana tura su ta tsalle-tsalle daga kafaffun farfajiya.
Yaya gammarus yake ci?
Abincin gammarus ya ƙunshi abincin dabbobi da shuka. An fi son abinci mai laushi: kifi mai mutu, tsire-tsire masu lalata, tarkace iri iri.
Gammarus alamomi ne na yawan oxygen a ruwa.
Yayin ciyarwa, ana iya tattara su da yawa. A cikin aquariums, crustaceans suna ciyar da nama. Gammarus suna da ƙarfi sosai har suna iya yanke ta hanyar kamun kifi idan suka taru a ciki da yawa kuma suka ci kifayen da aka kama.
Wadannan crustaceans suna zaune kusa da bakin teku a ƙarƙashin duwatsu ko a cikin ciyawar marine. A cikin hunturu, gammarus tara a cikin tushen tsiro, a ciki za ku iya samun abinci mai yawa.
Kodayake waɗannan crustaceans suna yin rayuwa mai aiki a ƙarƙashin ruwa, suna buƙatar oxygen. Kafafu na ciki na gammarus suna cikin motsawa koyaushe, suna ƙirƙirar rafi na ruwa wanda ke wanke kwatancen. Hakanan, rafin ruwa yana wanke ƙwai waɗanda suke cikin ɗakunan kiwo yayin lokacin kiwo.
A cikin rayuwa, waɗannan ɓawon burodi suna girma, a cikin wane lokaci suke birgima akai-akai. A cikin hunturu, molting yana faruwa kowane kwanaki 16-18, kuma a lokacin rani - kowane kwana 7. A cikin matasa amphipods, bayan 7 molt, lamellar outgrowths ya bayyana a kafafu, wanda ya samar da dakin brood. An fara amfani da tauraron dan adam a cikin jirgin ruwa, a gefe guda kuma suna taruwa kamar yatsunsu na hannaye. A bangarorin farantin ɗin kada ku rufe, amma kawai taɓa gefan bakin gefen. Wato, jakar brood na waɗannan ɓawon burodi bututu ne na tsarin lattice, buɗe a ɓangarorin biyu, godiya ga wannan, ƙwai da ke kwance a ciki, ana samun ruwa mai yawa.
Gammarus ƙananan wakilai ne na crustaceans.
Bayan molt 10, wanda yakan faru ne a wata na 3 na crustacean, gammarus ya zama mai yin jima'i, amma jikinsa ya kai rabin tsawon.
Gammarus kiwo
A lokacin kiwo, saurayin yakan kama mace ya kwana a bayan ta tsawon mako guda. An yi shi a jikin mace tare da taimakon abin da ke kwance a kafafunta. A wannan lokacin, mace tayi girma, kuma namiji yana taimaka mata ta zubar da tsohon fata da kafafunta. Lokacin da molt ya ƙare, namiji ya canza maniyyi tare da ƙafafunsa na ciki zuwa cikin ɗakin murfin mace. Ya shimfiɗa zuriya a jikin bangon ɗakin. Wannan tsari yana ɗaukar secondsan mintuna kaɗan, namiji nan da nan yakan debo daga mace, sai ta sanya ƙwai a cikin jaka.
Qwai Gammarus manya ne, mai duhu cikin launi. A cikin ɗayan ɓoyayyun akwai ƙwai 30. Suna haɓaka a cikin makonni 2-3 a lokacin dumi, kuma idan yana da sanyi, to wannan lokacin yana ƙaruwa zuwa watanni 1.5. Cikakken gammarus ƙyanƙyashe ƙasan daga ƙwai, tare da kowane molt yawan ɓangarori a cikin ɗayan eriyoyin eriya suna ƙaruwa.
Gammarus suna kama da chikinod crustaceans.
Lokacin da samari gammarus suka ƙyanƙyashe, basu cikin hanzari su bar ɗakunan murfin matan, kuma barin su kawai bayan molt na farko tare da tsofaffin fatalwa. Kirkirar ɓoyayyen ɓarayin a cikin bazara ya zama balaga ta hanyar jima'i. Ganiya mafi girma tana faruwa a cikin kaka da bazara. A cikin yanayin wurare masu zafi, mace gammarus suna kwantawa da dama yayin rayuwarsu, ana kama guda ɗaya ne kawai a arewa, kuma lokacin kiwo ya fara a tsakiyar bazara.
A launi na chikinod crustaceans ne mafi yawan lokuta kore. Wannan launi an kafa shi saboda irin ɗabi'un tsire-tsire da aka cinye. Gammarus wanda baya cin ciyawar kore ba shi da koren launi. Launi na iya zama launin kore, launin ruwan kasa da launin shuɗi. Amma jinsunan Baikal na gammarus banda, jikinsu ya bambanta launuka masu launin shuɗi, ja da kore. Karkashin ƙasa da nau'in teku mai zurfi marasa launi, amma akwai kuma kyawawan nau'in zurfin teku mai zurfi.
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