Imfanzi yaseNyakatho pink (Pandalus borealis) ingeyesigaba se-crustacean. Yizinhlobo zamanzi abandayo ze-arctic ezibaluleke kakhulu kwezentengiselwano.
Indawo yokuhlala yezimfanzi zasenyakatho ezibomvana.
Ama-shrimps asenyakatho abomvana ahlala ekujuleni kwamamitha angama-20 kuye kwayi-1330. Zihlala emhlabathini othambile nosilika, emanzini olwandle ngamazinga okushisa kusuka ku-0 ° C kuye ku- + 14 ° C nosawoti ka-33-34. Ekujuleni okungafika kumamitha angamakhulu amathathu, ama-shrimp akha amaqoqo.
Sabalalisa imfucumfucu esenyakatho epinki.
Ama-shrimp aseNyakatho pink asatshalaliswa ku-Atlantic Ocean kusuka ogwini lwaseNew England, Canada, ugu olusempumalanga (kusuka eNewfoundland naseLabrador) kuya eNingizimu naseMpumalanga Greenland, e-Iceland. Bahlala emanzini aseSvalbard naseNorway. Kutholakala eNyakatho Yolwandle kuze kufike ku-English Channel. Basakazeka emanzini aseJapan, oLwandle lwase-Okhotsk, badlula eBering Strait kude kakhulu eningizimu yeNyakatho Melika. ENyakatho Pacific, zitholakala oLwandle iBering.
Izimpawu zangaphandle zezimfanzi ezisenyakatho pink.
Ama-shrimp aseNyakatho pink ajwayele ukubhukuda kukholamu lamanzi. Inomzimba omude, ocindezelwe eceleni, oqukethe izigaba ezimbili - i-cephalothorax nesisu. I-cephalothorax yinde, icishe ilingane nengxenye yobude bomzimba. Kukhona ipheya elilodwa lamehlo ekucindezelweni kwenqubo yamakhala emide. Amehlo ayinkimbinkimbi futhi aqukethe izinto eziningi ezilula, inani lazo elanda njengoba imfanzi ikhula. Umbono kaShrimp uwumbala, ngomfanekiso wento yakhiwa izithombe eziningi ezihlukene ezivela engxenyeni ngayinye ehlukene. Umbono onjalo wezwe elizungezile awucaci kakhulu futhi awucaci.
Igobolondo eliminyene le-chitinous liyisivikelo esithembekile se-gill; ezansi iba mncane.
Imfanzi yaseNyakatho pink inamabhangqa emilenze ayi-19. Imisebenzi yabo yehlukile: izimpondo yizitho ezibucayi zokuthinta. Ama-mandibles agaya ukudla, imihlathi ibamba inyamazane. Imilenze emide, efakwe uzipho oluncane, iyashintshwa ukuze kuhlanzwe umzimba kanye nama-gill ekungcoleni ngosilika. Zonke izitho zenza umsebenzi wezimoto, yizona ezinde kakhulu futhi ezinamandla kakhulu. Imilenze yesisu iyasiza ekubhukudeni, kepha kwezinye izimfanzi ziphenduke isitho sokukopisha (kwabesilisa), kwabesifazane zisebenza ngokuzala amaqanda.
Izici ezihlukile zokuziphatha kwezimfanzi zasenyakatho ezibomvana.
Ama-shrimps asenyakatho abomvana emanzini athinta izitho zawo kancane, ukunyakaza okunjalo akufani nokubhukuda. Ama-crustaceans asabekayo enza ukweqa okusheshayo ngosizo lokugoba okubukhali komphetho oqinile obanzi we-caudal. Le ndlela yokuzivikela ibalulekile ekuvikeleni ekuhlaselweni yizilwane. Ngaphezu kwalokho, izimfanzi zigxumela emuva kuphela, ngakho-ke kulula ukuzibamba uma uletha inetha ngemuva, bese uzama ukuyibamba ngaphambili. Kulokhu, imfanzi igxumela yodwa enetheni ngaphandle kokulimaza umzimba.
Ukukhiqizwa kabusha kwezimfanzi ezisenyakatho pink.
Izimfanzi zaseNyakatho pink ziyizinto eziphila nge-dioecious. Ziyi-protrandric hermaphrodites futhi zishintsha ubulili cishe eminyakeni emine ubudala. Ngemuva kokuphothulwa kokukhula kwesibungu, lapho ama-shrimps aneminyaka engu-1.5 ubudala, angamaduna. Bese kuba noshintsho lwezocansi nezimfanzi zizala njengabesifazane. Banamathisela amaqanda abekwe emilenzeni yesisu etholakala esiswini.
Ukuthuthuka kwezimfanzi ezisenyakatho pink kwenzeka ngqo noma ngokuguqulwa, kulokhu kuvela isibungu.
Ifomu lokuqala lesibungu libizwa ngokuthi yi-nauplius; zihlukaniswa ngokuba khona kwamabhangqa amathathu emilenze neso elilodwa elenziwe ama-lobes amathathu. Ifomu lesibili - iprotozoa inomsila nezinqubo ezimbili (eyodwa ifana nomlomo, eyesibili isesimweni sameva). Ngokuthuthuka okuqondile, i-crustacean encane ngokushesha ivela eqandeni. Abesifazane bathwala inzalo izinyanga ezingama-4-10. Izibungu ziyabhukuda isikhathi esithile ekujuleni okungajulile. Ngemuva kwezinyanga eziyi-1-2 ziyacwila phansi, sezivele ziyimfanzi encane, futhi zikhula ngokushesha. I-Molt yenzeka ngezikhathi ezithile kuma-crustaceans. Ngalesi sikhathi, ikhava endala enesikhumba esiqinile ithathelwa indawo ungqimba oluthambile oluvikelayo, olwelulwa kalula kuphela ngemuva kokuncibilika.
Bese iqina futhi ivikele umzimba othambile walezi zimfanzi. Njengoba i-crustacean ikhula, igobolondo lincipha kancane kancane, futhi ikhava e-chitinous iyashintsha futhi. Ngesikhathi se-molting, imfanzi yasenyakatho pink iba sengozini enkulu futhi iyisisulu sezinto eziningi zasolwandle. Ama-shrimps asenyakatho pink ahlala olwandle cishe iminyaka eyi-8, afinyelela kubude bomzimba obungu-12.0 -16.5 cm.
Ukondla i-Northern Pink Shrimp.
I-Northern pink shrimp idla i-detritus, izitshalo zasemanzini ezifile, izibungu, izinambuzane kanye ne-daphnia. Badla izidumbu zezilwane ezifile. Kaningi babuthana emhlanjini omkhulu eduze kwamanetha okudoba futhi badle izinhlanzi ezibhajwe kumaseli enetha.
Inani lentengiso lezimfanzi ezisenyakatho pink.
Ama-shrimp aseNyakatho pink adotshwa ngobuningi obukhulu, ngokubanjwa minyaka yonke kwamathani ayizigidi eziningana. Ukudoba okunamandla ikakhulukazi kwenziwa endaweni yamanzi oLwandle iBarents. Ukugxila okuyinhloko kwezimfanzi kutholakala ezindaweni ezisenyakatho-mpumalanga yeVictoria Island.
Izitoko zama-crustaceans oLwandle iBarents zingamathani ayizinkulungwane ezingama-400-500.
Ama-shrimp aseNyakatho pink nawo adotshwa ngenhloso yokuhweba entshonalanga ye-Atlantic naseNyakatho ye-Atlantic, nezindawo ezinkulu zokudoba ngaseGreenland futhi manje sezibanjwa zaya eningizimu eGulf of St. Lawrence, eGulf of Fundy naseGulf of Maine. Kukhona ukudoba okunamandla endaweni yase-Iceland nangasogwini lwaseNorway. Ama-shrimp aseNyakatho pink akha ama-80 kuya ku-90% wokubanjwa ogwini olusentshonalanga yeKamchatka, iBering Sea kanye neGulf of Alaska. Lolu hlobo lwezimfanzi ludotshwa eKorea, e-USA, eCanada.
Izinsongo kuNyakatho Pink Shrimp.
Indawo yokudoba izimfanzi ezisenyakatho idinga ukuhlaliswa kwamanye amazwe. Muva nje, ukubanjwa kwezimfanzi kunciphise amahlandla ama-5. Ngaphezu kwalokho, amacala okudonswa ngokweqile kwamakhodi wezingane aye aba maningi kakhulu ngesikhathi sokudoba.
Njengamanje, imikhumbi yaseRussia neyaseNorway idoba endaweni yaseSpitsbergen ngaphansi kwelayisense ekhethekile elawula inani lezinsuku ezisebenzayo nenani lemikhumbi.
Futhi, usayizi omncane wemeshi ungama-35 mm. Ukuze kuncishiswe ukubamba, ukuvalwa kwesikhashana kwezindawo zokudoba lapho kwenzeka khona ukubanjwa ngokweqile kwehaddock, cod, black halibut kanye ne-redfish.
Indawo yokudoba izimfanzi endaweni evikela abadobi ezungeze iSvalbard ibhekwa njalo, njengoba kuvela ukukhathazeka ukuthi isitokwe sezimfanzi ezisenyakatho pink singaphela. Izwe ngalinye linikezwa inani elithile lezinsuku zokudoba. Inani eliphakeme lezinsuku ezichithwe ekudobeni lehliswe ngama-30%.
