Ts'ebetso ea tikoloho ea boenjiniere ba hydraulic e bohlokoa bakeng sa paballo ea mehloli ea litlhapi. Lebelo la metsi le tsebahala ka ho ama ho tsoala ha litlhapi tse ntšang mahe a hoholehang. Phuputso ena e ikemiselitse ho hlahloba liphello tsa ho hlohlelletsa lebelo la metsi ho butsoa ha ovary le bokhoni ba antioxidant ba carp ea joang ba batho ba baholo (Ctenopharyngodon idellus) ka liteko tsa laboratori e le ho utloisisa mokhoa oa 'mele o thehiloeng karabelong ea tlhaho ea ho ikatisa ho phallo ea tikoloho. Re hlahlobile maemo a histology, lihormone tsa thobalano le vitellogenin (VTG) ea ovary, le litlaleho tsa liphatsa tsa bohlokoa tsa lefutso tse ka har'a hypothalamus-pituitary-gonad (HPG), hammoho le mesebetsi ea antioxidant ea ovary le sebete ka har'a carp ea joang. Liphetho li bontšitse hore leha ho ne ho se na phapang e bonahalang litšobotsing tsa nts'etsopele ea ovary ea carp ea joang tlas'a ho hlohlelletsa lebelo la metsi, estradiol, testosterone, progesterone, 17α,20β-dihydroxy-4-pregnen-3-one (17α,20β-DHP), le maemo a VTG a ile a phahama, e neng e amana le taolo ea transcriptional ea liphatsa tsa lefutso tsa axis tsa HPG. Maemo a tlhahiso ea liphatsa tsa lefutso (gnrh2, fshβ, lhβ, cgα, hsd20b, hsd17b3, le vtg) moleng oa HPG a ile a phahama haholo tlas'a tšusumetso ea lebelo la metsi, ha a hsd3b1, cyp17a1, cyp19a1a, hsd17b1, star, le igf3 a ile a fokotsoa. Ho phaella moo, tšusumetso e nepahetseng ea lebelo la metsi e ka ntlafatsa boemo ba bophelo bo botle ba 'mele ka ho eketsa mesebetsi ea li-enzyme tsa antioxidant ka har'a ovary le sebete. Liphetho tsa phuputso ena li fana ka tsebo ea motheo le tšehetso ea data bakeng sa ts'ebetso ea tikoloho ea merero ea motlakase oa metsi le tsosoloso ea tikoloho ea noka.
Selelekela
Letamo la Likhohlo tse Tharo (TGD), le fumanehang bohareng ba Noka ea Yangtze, ke projeke e kholo ka ho fetisisa ea motlakase oa metsi lefatšeng 'me e bapala karolo ea bohlokoa ho sebeliseng le ho sebelisa matla a noka (Tang et al., 2016). Leha ho le joalo, ts'ebetso ea TGD ha e fetole feela lits'ebetso tsa metsi tsa linoka haholo empa hape e sokela libaka tsa bolulo tsa metsing holimo le tlase ho sebaka sa letamo, ka hona e kenya letsoho ho senyeheng ha tikoloho ea linoka (Zhang et al., 2021). Ka botlalo, taolo ea matamo e etsa hore lits'ebetso tsa phallo ea linoka li be le mokhoa o tšoanang 'me e fokolisa kapa e felise litlhōrō tsa likhohola tsa tlhaho, ka hona e lebisa ho fokotseheng ha mahe a litlhapi (She et al., 2023).
Mosebetsi oa ho behela litlhapi o ka ’na oa susumetsoa ke mabaka a fapaneng a tikoloho, ho kenyeletsoa lebelo la metsi, mocheso oa metsi, le oksijene e qhibilihileng. Ka ho susumetsa tlhahiso le tlhahiso ea lihormone, mabaka ana a tikoloho a ama nts'etsopele ea litšoelesa tsa tlhapi (Liu et al., 2021). Haholo-holo, lebelo la metsi le lemohiloe le ama ho behela litlhapi mahe a phallang linōkeng (Chen et al., 2021a). E le ho fokotsa liphello tse mpe tsa ts'ebetso ea letamo ho beheleng litlhapi, ho hlokahala ho theha mekhoa e itseng ea tikoloho le metsi ho susumetsa ho behela litlhapi (Wang et al., 2020).
Li-carp tse 'ne tse kholo tsa Chaena (FMCC), ho kenyeletsoa le black carp (Mylopharyngodon piceus), grass carp (Ctenopharyngodon idellus), silver carp (Hypophthalmichthys molitrix), le bighead carp (Hypophthalmichthys nobilis), tse amehang haholo lits'ebetsong tsa metsi, li emela litlhapi tsa bohlokoa ka ho fetisisa moruong Chaena. Baahi ba FMCC ba tla fallela libakeng tsa ho behela 'me ba qale ho behela ka lebaka la phallo e phahameng ea metsi ho tloha ka Hlakubele ho isa Phuptjane, ha kaho le ts'ebetso ea TGD li fetola morethetho oa tlhaho oa metsi le ho sitisa ho falla ha litlhapi (Zhang et al., 2023). Ka hona, ho kenyelletsa phallo ea tikoloho morerong oa ts'ebetso ea TGD e tla ba mokhoa oa ho fokotsa ho sireletsa ho behela ha FMCC. Ho bontšitsoe hore ho kenya tšebetsong likhohola tse laoloang ke batho e le karolo ea ts'ebetso ea TGD ho ntlafatsa katleho ea ho ikatisa ea FMCC libakeng tse tlase (Xiao et al., 2022). Ho tloha ka 2011, ho hlophisitsoe boiteko bo 'maloa ba ho khothaletsa boitšoaro ba ho tsoala ha FMCC e le ho fokotsa ho fokotseha ha FMCC ho tsoa Nokeng ea Yangtze. Ho fumanoe hore lebelo la metsi le susumetsang ho tsoala ha FMCC le ne le tloha ho 1.11 ho isa ho 1.49 m/s (Cao et al., 2022), ka lebelo le nepahetseng la phallo la 1.31 m/s le ile la khetholloa bakeng sa ho tsoala ha FMCC linōkeng (Chen et al., 2021a). Leha lebelo la metsi le bapala karolo ea bohlokoa ho tsoaleng ha FMCC, ho na le khaello e hlokomelehang ea lipatlisiso mabapi le mokhoa oa fisioloji o thehiloeng karabelong ea ho tsoala ha tlhaho ho phallo ea tikoloho.
Nako ea poso: Phato-05-2024