Gammarus - wamba wamba crustaceans amphipods. Ngati mugwira nkhwangwa, imapindika mwachangu m'manja mwake ndikulimbana nayo.
Gammaruses imakhala ndi thupi lopindika, loponderezedwa pang'ono mbali, thupi limakhazikika pamwamba. Maso a ma crustaceanswa ndi owoneka bwino, ali ndi mawonekedwe ovuta: awiri oyamba awolozera kutsogolo, awiriwo amabwerera m'mbuyo, pomwe amafupikirako kuposa woyamba.
Mormysh, kapena gammarus (Gammarus).
Pali zibwano pamiyendo yamiyendo yamiyendo, mothandizidwa ndi gammarus imagwira nyama, ndipo kupatula apo, amateteza kuteteza ndi kuukira. Amuna amakhala ndi zilazi zazikazi nthawi yomwe ikukhwima. Asodzi amagwiritsa ntchito miyendo itatu yam'mimba posambira, ndipo mothandizidwa ndi atatu omaliza adumpha. Miyendo yodumphadumpha yokhala ngati masamba, imakhala ndi mabatani ambiri, chifukwa cha momwe crustaceans amawagwiritsira ntchito ngati mkondo.
Chifukwa cha kuchuluka kwa miyendo iyi, ma amphipod amasambira mwachangu ndikusuntha kosiyanasiyana. Amagwiritsa ntchito miyendo yoyenda mothamanga pakati pazomera zosiyanasiyana. Ma mbale apadera amateteza magaloni osawonongeka kuti asawonongeke.
Ma crustaceans awa ndi chakudya cha nsomba.
Pakusambira, gammarus amayendayenda ndi miyendo yawo posambira, pomwe awiriawiri miyendo yakuyenda yakutsogolo imagwiranso ntchito. Gammarus, ngakhale amatchedwa amphipods, dzinali silolondola kwenikweni, chifukwa amasambira mbali zawo m'mitsinje yaying'ono kapena pafupi ndi gombe. Ndipo ngati kuya kuli kwazonse, ndiye kuti amasambira ndi misana yawo. Ma gammarus amasankha mayendedwe ake, kuwerama ndi kusasokoneza pamimba.
Makoko awa amatha kudumphira m'madzi mwakuthwa, ndikukankhidwira ndikukutumpha miyendo kuchokera pamalo olimba.
Kodi galamoni amadya bwanji?
Zakudya za gammarus zimakhala ndi zakudya za nyama ndi zomera. Zakudya zofewa zimakondedwa: nsomba zakufa, zomera zowola, zinyalala zosiyanasiyana za nyama.
Gammarus ndi zizindikiro za kuchuluka kwa mpweya m'madzi.
Mukamadyetsa, zimatha kusonkhanitsidwa zochuluka. M'malo am'madzi, crustaceans amadyetsedwa nyama. Gramarus ndi yolimba kwambiri kotero kuti amatha kudula mu ukonde wausodzi ngati atasonkhana mmalo ambiri ndikudya nsomba zomwe zagwidwa.
Ma crustaceanswa amakhala pafupi ndi gombe pansi pa miyala kapena pakati pa zomera zam'madzi. M'nyengo yozizira, gammarus amasonkhana pakati pamizu ya mabango, momwe mungapezere chakudya chochuluka.
Ngakhale ma crustaceans amenewa amakhala ndi moyo wamadzi, amafunikira mpweya. Miyendo yam'mimba ya gammarus imayenda mosasunthika, amapanga mtsinje wamadzi womwe umatsuka ma gill. Komanso, mtsinje wamadzi umatsuka mazira omwe amakhala mzipinda zamkaka zam'madzi nthawi yopanga.
M'moyo wonse, ma crustaceans amakula, nthawi yomwe amayimba mobwerezabwereza. M'nyengo yozizira, molting amapezeka masiku onse a 16-18, ndipo nthawi yotentha - masiku 7 aliwonse. M'magulu apamwamba achikazi, mutatha 7 molt, masamba a lamellar amawoneka pamiyendo, omwe amapanga chipinda cha ana. Mbalezo zimapindika ngati bwato, kumbali yamkati zimatembenuka ngati zala zamanja zokutidwa. M'mphepete mwa mbale musatseke, koma ingogwirani pamphepete. Ndiko kuti, thumba la ana a crustaceans awa ndi chubu chamapangidwe amtambo, otseguka mbali zonse, chifukwa cha izi, mazira atagona mmenemo, madzi ambiri amapezeka.
Gammarus ndi oimira ochepa a crustaceans.
Pambuyo pa molt wa 10, womwe umapezeka mozungulira mwezi wa 3 wa crustacean, gammarus imayamba kukhwima pathupi, koma thupi lake limafikira theka basi.
Kuswana kwa gammarus
Nthawi yakubzala, yamphongo imagwira mkaziyo ndi kukhalabe kumsana kwake pafupifupi sabata. Amagwira thupi la mkazi mothandizidwa ndi zibwano zake zomwe zili m'miyendo yakugwira. Nthawi imeneyi, zazikazi zimasungunuka, ndipo zamphongo zimamuthandiza kutaya khungu lakale ndi miyendo. Chinyalacho chikatha, chamunayo chimasinthanitsa umuna ndi miyendo yake yam'mimba m'chipinda cha ana achikazi. Afalitsa mbewuyo pakhoma la chipindacho. Njirayi imatenga masekondi angapo, nthawi yomweyo yamphongo imachoka kwa mkaziyo, ndipo imayikira mazira m'thumba.
Mazira a Gammarus ndi akulu, amtundu wakuda. Pa malo amodzi pali mazira pafupifupi 30. Amakula mkati mwa masabata 2-3 nthawi yofunda, ndipo ngati zili bwino, ndiye kuti nthawi imeneyi imakwera mpaka miyezi 1.5. Ming'oma yopanga bwino yaikira mazira, ndipo molt iliyonse imakhala ndi kuchuluka kwa zigawo za milongoti.
Gammarus ndi ofanana ndi amphipod crustaceans.
Ana gammarus atadonthoka, sathamangira m'zipinda zazikazi, ndikangowasiya atatha molt limodzi ndi zikopa zakale. Okhazikika omwe adasungidwa masika amakhala okhwima pakugwa. Kuswana pachimake kumachitika m'dzinja ndi masika. M'malo otentha kwambiri, zazikazi za gammarus zimagona ndodo zingapo pamoyo wawo, kumpoto chimodzi chimapangidwa, ndipo nthawi yobereketsa imayamba mkatikati mwa chilimwe.
Mtundu wa amphipod crustaceans nthawi zambiri umakhala wobiriwira. Mtunduwu umapangidwa chifukwa cha mitundu ya zomera zomwe zimadyedwa. Gramarus yomwe singadye zomera zobiriwira ilibe mtundu wobiriwira. Mtundu ukhoza kukhala wobiriwira, wonyezimira komanso wachikasu. Koma mitundu ya Baikal ya gammarus ndiyopadera, matupi awo ali ndi mitundu yamtambo ya buluu, ofiira komanso obiriwira. Mitundu ya pansi panthaka yakuzama kwambiri imakhala yopanda utoto, komanso ilinso mitundu yamadzi yamadzi a pansi penipeni.
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