本文選題：東方高原鰍 + 繁殖生物學　； 參考：《華中農(nóng)業(yè)大學》2017年碩士論文

【摘要】：東方高原鰍(Triplophysa orientails(Herzenstein))作為西藏雅魯藏布江經(jīng)濟名優(yōu)魚類,體表具漂亮花紋,有較好的觀賞性;包括東方高原鰍在內(nèi)的高原鰍屬是西藏重要的土著魚類,在西藏高寒脆弱的生態(tài)系統(tǒng)中占據(jù)重要地位。然而對于西藏地區(qū)高原鰍屬的報道僅有漁業(yè)資源、分類學等方面。本文通過對東方高原鰍的繁殖生物學、以及其人工繁殖的相關(guān)研究,為進一步了解其早期生活史,開展西藏高原魚類增殖保護的相關(guān)工作提供基本的參考資料。主要研究結(jié)果如下:1、在繁殖季節(jié),東方高原鰍雄性的第二性征非常明顯,可以作為鑒別雌雄的主要方法;對樣本進行統(tǒng)計,雌雄比接近1:1;絕對繁殖力(F)、相對體長繁殖力(FL)和相對體重繁殖力(FW)分別為714~32320(4483±5663)粒,6~229(41±42)粒/mm、95~903(302±221)粒/g;絕對繁殖力F與體重W、性腺重WG、空殼WN、性腺系數(shù)GSI四個指標顯著相關(guān),相對體長繁殖力FL與體重W、性腺重WG、性腺系數(shù)GSI三個指標顯著相關(guān),相對體重繁殖力FW與體重W、性腺重WG兩個指標顯著相關(guān),對繁殖力進行建模:絕對繁殖力F=5016.444-1625.19 W+10464.902 WG+1343.718 WN-487.018 GSI(r=0.968,P0.01);相對體長繁殖力FL=47.215-4.487W+70.928 WG-3.259 GSI(r=0.928,P0.01);體重繁殖力FW=278.394 23.673W+255.236WG(r=0.731,P0.01);經(jīng)卵徑頻率分布圖初步推斷,東方高原鰍產(chǎn)卵類型為分批產(chǎn)卵;2、東方高原鰍成熟卵呈淡黃色圓形,卵徑為0.97~1.11 mm,遇水具微黏性,為沉性卵。在水溫(16±0.5)℃下,受精卵歷時132 h 9 min孵化出膜,所需積溫為2113.6℃·h,整個胚胎發(fā)育過程分為7個時期:胚盤形成期、卵裂期、囊胚期、原腸胚期、神經(jīng)胚期、器官形成期、出膜前期;初孵仔魚全長(4.86±0.09)mm,在水溫(16±0.5)℃下,胚后發(fā)育歷時34 d,分為卵黃囊和后期仔魚階段,其中卵黃囊階段歷時9 d,后期仔魚歷時25 d。
[Abstract]:Triplophysa Orientale Orientale Orient Loach (Triplophysa orientalis Herzensteinus), as a famous economic fish of the Yalu Zangbo River in Tibet, has beautiful patterns on its body surface and good ornamental properties, and the genus Loach is an important indigenous fish in Tibet, including the Oriental Plateau Loach. It plays an important role in Tibet's alpine fragile ecosystem. However, there are only fishery resources, taxonomy and so on. In this paper, the reproductive biology of Orient Plateau Loach and its artificial propagation were studied, which provided basic reference materials for further understanding its early life history and carrying out the related work of fish proliferation and protection in Tibet Plateau. The main results are as follows: in breeding season, the secondary sexual characteristics of the males of the Oriental Plateau Loach are very obvious, which can be used as the main method to distinguish male and female. The ratio of female to male was close to 1: 1; absolute fecundity (FN), relative body length fecundity (FW) and relative body weight fecundity (FW) were 714 / 32320 / 4483 鹵5663) and 622929 / 41 鹵42respectively, respectively. Absolute fecundity F was significantly correlated with body weight (WW), sex gland weight (WGG), empty shell WN, and gonad coefficient (GSI), and absolute fecundity F was significantly correlated with body weight (WW), sexual gland weight (WGG), empty shell WN (WN) and gonad coefficient (GSI). The relative fecundity FL was significantly correlated with body weight, sex gland weight (WGG) and gonad coefficient (GSI), and the relative body weight (FW) was significantly correlated with body weight (W) and sex gland weight (WG). Modeling of fecundity: absolute fecundity F _ (5016.444-1625.19) W _ (10464.902) WG 1343.718 WN-487.018 GSI ~ (0.96) P _ (0.01); relative length fecundity FLN 47.215-4.487W 70.928 WG-3.487W 70.928 WG-3.487W 70.928 WG-3.487W _ (0.928) P _ (0.01); body weight fecundity F _ W _ (278.394) (23.673W) (255.236WGR ~ (0.731) P _ (0.01). The oviposition type of Loach in the Orient Plateau is divided into batches and oviposition. The mature eggs of the Loach are yellowish and round, with an egg diameter of 0.97 ~ 1.11 mm. At water temperature of 16 鹵0.5 鈩，

本文編號：2046162