Ts'ebetso ea tikoloho ea boenjineri ba haeteroliki e bohlokoa bakeng sa paballo ea lisebelisoa tsa ho tšoasa litlhapi. Lebelo la metsi le tsebahala le ama ho tsoala ha litlhapi tse hlahisang mahe a hoholehileng. Boithuto bona bo ikemiselitse ho hlahloba litlamorao tsa ts'usumetso ea lebelo la metsi mabapi le kholo ea mahe a bomme le matla a antioxidant a carp ea joang e kholo (Ctenopharyngodon idellus) ka liteko tsa laboratori e le ho utloisisa mokhoa oa fisioloji o thehiloeng ho karabelo ea tlhaho ea tlhaho ho phallo ea tikoloho. Re ile ra hlahloba histology, lihomone tsa thobalano le likarolo tsa vitellogenin (VTG) tsa ovary, le litlaleho tsa liphatsa tsa lefutso tsa bohlokoa ka har'a hypothalamus-pituitary-gonad (HPG) axis, hammoho le mesebetsi ea antioxidant ea ovary le sebete ho carp ea joang. Liphello li bontšitse hore le hoja ho ne ho se na phapang e hlakileng ea litšobotsi tsa nts'etsopele ea mae a bomme ka tlas'a ts'usumetso ea metsi, estradiol, testosterone, progesterone, 17α, 20β-dihydroxy-4-pregnen-3-one (17α,20β-DHP), 'me mahloriso a VTG a ne a phahamisitsoe, a neng a amana le tranelate ea HPG. Maemo a polelo ea liphatsa tsa lefutso (gnrh2, fshβ, lhβ, cgα, hsd20b, hsd17b3, le vtg) axis ea HPG a ne a phahamisitsoe haholo tlas'a ts'usumetso ea lebelo la metsi, athe a hsd3b1, cyp17a1, cyp1,3fda, 7b, 7b, 19a1 petetsoa. Ntle le moo, ts'usumetso e nepahetseng ea lebelo la metsi e ka ntlafatsa boemo ba bophelo bo botle ba 'mele ka ho eketsa ts'ebetso ea li-enzyme tsa antioxidant ka mae a bomme le sebete. Liphetho tsa phuputso ena li fana ka tsebo ea mantlha le ts'ehetso ea data bakeng sa ts'ebetso ea tikoloho ea merero ea motlakase oa metsi le tsosoloso ea tikoloho ea noka.
Selelekela
Letamo la Three Gorges (TGD), le bohareng ba Noka ea Yangtze, ke morero o moholo ka ho fetisisa oa ho fehla matla a metsi lefatšeng 'me o bapala karolo ea bohlokoa ho sebeliseng matla a noka (Tang et al., 2016). Leha ho le joalo, ts'ebetso ea TGD ha e fetole feela ts'ebetso ea metsi a linōka empa e boetse e sokela libaka tsa metsing ka holimo le ka tlaase ho sebaka sa letamo, ka hona se kenya letsoho ho senyeha ha tikoloho ea linōka (Zhang et al., 2021). Ka ho qaqileng, taolo ea matamo a homogenizes mekhoa ea ho phalla ha linōka le ho fokolisa kapa ho felisa litlhōrō tsa likhohola tsa tlhaho, kahoo li lebisa ho fokotseha ha mahe a litlhapi (She et al., 2023).
Ts'ebetso ea ho hlahisa litlhapi e ka 'na ea susumetsoa ke mefuta e fapaneng ea maemo a tikoloho, ho kenyelletsa lebelo la metsi, mocheso oa metsi le oksijene e qhibilihileng. Ka ho susumetsa motsoako oa li-hormone le secretion, lintlha tsena tsa tikoloho li ama nts'etsopele ea tlhapi ea tlhapi (Liu et al., 2021). Haholo-holo, lebelo la metsi le 'nile la hlokomeloa hore le ama ho hlaha ha litlhapi tse fanang ka mahe a hoholehang linōkeng (Chen et al., 2021a). Bakeng sa ho fokotsa litlamorao tse mpe tsa ts'ebetso ea matamo ho tsoalang litlhapi, hoa hlokahala hore ho thehoe lits'ebetso tse ikhethileng tsa eco-hydrological ho khothaletsa ho hlahisa litlhapi (Wang et al., 2020).
Li-carp tse 'ne tse kholo tsa Machaena (FMCC), ho kenyelletsa le carp e ntšo (Mylopharyngodon picus), grass carp (Ctenopharyngodon idellus), silver carp (Hypophthalmichthys molitrix), le bighead carp (Hypophthalmichthys nobilis), tse amehang haholo lits'ebetsong tsa hydrological, li emela litlhapi tsa bohlokoa ka ho fetisisa moruong oa China. Baahi ba FMCC ba ne ba tla fallela libakeng tsa ho hlahisa lihlahisoa 'me ba qale ho hlahisa litholoana ka lebaka la likhahla tse phallang haholo ho tloha ka March ho ea ho June, ha kaho le ts'ebetso ea TGD e fetola morethetho oa tlhaho oa hydrological le ho thibela ho falla ha litlhapi (Zhang et al., 2023). Ka hona, ho kenyelletsa phallo ea tikoloho leanong la ts'ebetso ea TGD e ka ba mokhoa oa phokotso ho sireletsa ho hlaha ha FMCC. Ho 'nile ha bontšoa hore ho kenya ts'ebetsong likhohola tse laoloang ke batho e le karolo ea ts'ebetso ea TGD ho ntlafatsa katleho ea pelehi ea FMCC libakeng tse tlaase (Xiao et al., 2022). Ho tloha 2011, liteko tse 'maloa li hlophisitsoe ho khothaletsa boits'oaro ba FMCC e le ho fokotsa ho theoha ha FMCC ho tloha Nokeng ea Yangtze. Ho ile ha fumanoa hore lebelo la metsi le etsang hore FMCC le hlahisoe ho tloha ho 1.11 ho ea ho 1.49 m / s (Cao et al., 2022), e nang le lebelo le nepahetseng la phallo ea 1.31 m / s e ile ea khetholloa bakeng sa ho hlahisa FMCC linōkeng (Chen et al., 2021a). Le hoja lebelo la metsi le phetha karolo ea bohlokoa tlhahisong ea FMCC, ho na le khaello e hlokomelehang ea lipatlisiso mabapi le mokhoa oa fisioloji o thehiloeng karabelong ea tlhaho ea tlhaho ho phallo ea tikoloho.
Nako ea poso: Aug-05-2024