当前位置: X-MOL 学术Ichthyol. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Developmental morphology and growth in early stages of laboratory-reared Cirrhinus molitorella and C. microlepis (Cypriniformes: Cyprinidae)
Ichthyological Research ( IF 1.2 ) Pub Date : 2021-03-23 , DOI: 10.1007/s10228-021-00803-8
Shinsuke M. Morioka , Bounsong Vongvichith , Phonaphet Chanthasone , Phoutsamone Phommachan

The morphological developments in laboratory-reared larval and juvenile Cirrhinus molitorella and larval C. microlepis were described, and ontogenies (including yolk sizes and absorptions, fin-ray and myomere numbers, allometric changes in the snout, upper jaw, head and pre-anal lengths, maximum body depth, eye diameter and melanophore distributions) were compared. Body lengths (BL) just after hatching were smaller in C. molitorella [3.3 ± 0.1 (mean ± SD) mm] than in C. microlepis (4.4 ± 0.1 mm), and subsequent increase in body lengths were slower in C. molitorella than in C. microlepis. Yolk sizes just after hatching were correspondingly smaller in C. molitorella than in C. microlepis and the yolks were completely absorbed by ca. 95 hours after hatching in the former and ca. 118 hours in the latter. In C. molitorella, fin-rays started appearing at a smaller size than in C. microlepis, with full complements attained by 14.4 mm BL (day 35) in the former, while they did not attain by 16.4 mm BL (day 20) in the latter. Allometric changes started in smaller sizes in C. molitorella than in C. microlepis. Total myomeres were 38–41 in C. molitorella and 39–43 in C. microlepis. Melanophore distributions progressed similarly in both species, except for a darker deposition on the caudal peduncle of C. molitorella of ca. 7–10 mm BL. Larvae of these species were identifiable mainly by differences in fin-ray numbers and allometries by size.



中文翻译:

实验室饲养的摩氏梭鱼和微小梭状芽胞杆菌(C形:鲤科)的早期发育形态和生长。

在实验室饲养的幼虫的形态学发展和少年和幼虫C.细鳞进行了说明,并ontogenies(包括蛋黄的尺寸和吸收,鳍射线和myomere号码,异速变化口鼻部,上颚,头和预肛门长度,最大体深,眼睛直径和黑色素体分布进行了比较。刚孵化后的小体毛虫C. molitorella)的体长(BL)[3.3±0.1(平均值±SD)mm]比小鳞鱼(4.4±0.1 mm)小,随后的长大小毛体(C. molitorella)的体长慢在C. microlepis。刚孵化后的黄毛梭菌的卵黄大小相应较小相比,C。microlepis和蛋黄完全被ca吸收。孵化后约95小时。在后者中需要118个小时。在molitorella中,鳍片开始出现的尺寸小于C. microlepis,在前者中14.4 mm BL(第35天)获得了完整的补体,而在2008年BL中没有16.4 mm BL(第20天)获得了完整的补体。后者。与微小隐孢菌相比,隐杆菌的异体异变开始于较小的大小。在小毛隐孢子虫中总的单体为38-41,在隐孢子虫中为39-43 。在两个物种中黑素细胞分布的进展相似,只是在小毛隐孢子虫的尾柄上有较暗的沉积约。BL 7–10毫米。这些种类的幼虫主要通过鳍片数量和异形体大小的差异来识别。

更新日期:2021-03-24
down
wechat
bug