Mhedzisiro yekumhanya kwemvura pakukura kweovarian uye antioxidant kugona mune yakakura uswa carp (Ctenopharyngodon idellus)

Ecological kushanda kwehydraulic engineering kwakakosha pakuchengetedza zviwanikwa zvekuredza. Kumhanya kwemvura kunozivikanwa kukanganisa maberekerwo ehove dzinoburitsa mazai arikukurwa. Ichi chidzidzo chine chinangwa chekuongorora mhedzisiro yekumhanyisa kwemvura kukurudzirwa kweiyo ovarian maturation uye antioxidant kugona kwevakuru uswa carp (Ctenopharyngodon idellus) kuburikidza neongororo yerabhoritari kuitira kuti tinzwisise maitiro ehupenyu ari pasi pemhinduro yekubereka kwechisikigo kune ecological kuyerera. Takaongorora histology, mahomoni epabonde uye vitellogenin (VTG) mazamu evhavha, uye zvinyorwa zvemajini makuru mu hypothalamus-pituitary-gonad (HPG) axis, pamwe chete nemabasa e antioxidant e ovary uye chiropa muuswa carp. Zvigumisiro zvakaratidza kuti kunyange zvazvo pakanga pasina misiyano inonzwisisika pakukura kwe ovarian yehuswa carp pasi pemvura velocity stimulation, estradiol, testosterone, progesterone, 17α, 20β-dihydroxy-4-pregnen-3-one (17α, 20β-DHP), uye VTG concentrations yakasimudzwa, iyo yakanga yakabatana neHPG. Iwo magene ekutaura mazinga (gnrh2, fshβ, lhβ, cgα, hsd20b, hsd17b3, uye vtg) muhsd17b3, uye vtg) muHPG axis yakasimudzwa zvakanyanya pasi pemvura inosimudzira velocity, nepo iyo yehsd3b1, cyp17a1, cyp1,3fd, 7b, 7b, 7b, 19a1, uye 7b, kudzvinyirirwa. Pamusoro pezvo, kukwidziridzwa kwemvura kwakakodzera kunogona kusimudzira hutano hwemuviri nekuwedzera mabasa eantioxidant enzymes muovary uye chiropa. Mhedzisiro yechidzidzo ichi inopa ruzivo rwakakosha nerutsigiro rwedata rekushanda kwe ecology yemapurojekiti emagetsi emagetsi emvura uye kudzoreredza kwenzizi ecological.
Nhanganyaya
Dhamu reMagori Matatu (TGD), riri pakati peRwizi rweYangtze, ndiro purojekiti hombe pasi rose remagetsi uye rinotora basa rakakosha mukushandisa nekushandisa simba rerwizi (Tang et al., 2016). Nekudaro, kushanda kweTGD hakungoshandure zvakanyanya maitiro emvura enzizi asiwo kunotyisidzira nzvimbo dzemumvura kumusoro nekudzika kwenzvimbo yedhamu, zvichikonzera kuparara kwenzizi ecosystems (Zhang et al., 2021). Muchidimbu, kudzorwa kwemadziva homogenizes kuyerera kwenzizi uye kunopedza simba kana kubvisa echisikigo mafashama epamusoro, zvichikonzera kudzikira kwemazai ehove (She et al., 2023).
Kuita kwekubereka hove kungangopesvedzerwa nezvakasiyana siyana zvezvakatipoteredza, zvinosanganisira kumhanya kwemvura, tembiricha yemvura, uye oxygen yakanyungudika. Nekupesvedzera mahormone synthesis uye secretion, izvi zvakatipoteredza zvinhu zvinokanganisa kukura kwehove (Liu et al., 2021). Kunyanya, kumhanya kwemvura kwave kucherechedzwa kukanganisa kubereka kwehove dzinoburitsa mazai anodonha munzizi (Chen et al., 2021a). Kuti udzikise mhedzisiro yekushata kwekushanda kwedhamu pakubereka hove, zvinodikanwa kumisikidza eco-hydrological maitiro ekukurudzira kubereka kwehove (Wang et al., 2020).

Iwo mana makuru eChinese carps (FMCC), anosanganisira nhema carp (Mylopharyngodon picus), uswa carp (Ctenopharyngodon idellus), sirivheri carp (Hypophthalmichthys molitrix), uye bighead carp (Hypophthalmichthys nobilis), iyo inonzwisisa zvakanyanya kune hydrological process, inomiririra hove dzakanyanya kukosha mune zvehupfumi China. Huwandu hweFMCC hwaizotamira kunzvimbo dzekuberekesa uye kutanga kubereka nekuda kwekuyerera-kuyerera kubva munaKurume kusvika Chikumi, ukuwo kuvakwa uye kushanda kweTGD kuchichinja iyo yakasikwa hydrological rhythm uye ichitadzisa hove kufamba (Zhang et al., 2023). Naizvozvo, kubatanidza kuyerera kwe ecological muchirongwa chekushanda cheTGD chingave chiyero chekudzikisa kuchengetedza kubereka kweFMCC. Zvakaratidzwa kuti kuita mafashama anodzorwa nevanhu sechikamu chekushanda kweTGD kunosimudzira kubudirira kwekubereka kweFMCC munzvimbo dzakadzika (Xiao et al., 2022). Kubva 2011, kuedza kwakati kwakarongwa kusimudzira hunhu hweFMCC kuitira kudzikisira kudzikira kweFMCC kubva kuRwizi rweYangtze. Zvakaonekwa kuti kumhanya kwemvura kunoita kuti FMCC ibereke kubva ku1.11 kusvika 1.49 m/s (Cao et al., 2022), iine optimal flow velocity ye1.31 m/s yakaonekwa yekuberekesa FMCC munzizi (Chen et al., 2021a). Kunyangwe kumhanya kwemvura kuchiita basa rakakosha mukuberekazve kweFMCC, pane kushomeka kunoonekwa kwekutsvagisa pamusoro pemaitiro emuviri ari pasi pemhinduro yekuberekana kwechisikigo kuyerera kwezvakatipoteredza.