EFFECTS OF LOW PH ON THE CHORION OF RAINBOW-TROUT, ONCORHYNCHUS-MYKISS, AND BROWN TROUT, SALMO-TRUTTA F FARIO

被引：14
|
作者：
KUGEL, B
HOFFMANN, RW
FRIESS, A
机构：
[1] UNIV MUNICH, INST ZOOL & HYDROBIOL, KAULBACHSTR 37, W-8000 MUNICH 22, GERMANY
[2] UNIV BERN, INST TIERANAT, CH-3012 BERN, SWITZERLAND
来源：
JOURNAL OF FISH BIOLOGY | 1990年 / 37卷 / 02期
关键词：
chorion; low pH; Oncorhynchus mykiss; Salmo trutta;
D O I：
10.1111/j.1095-8649.1990.tb05860.x
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
Morphological studies on the effect of low pH on egg shells (chorion) of rainbow trout, Oncorhynrhus mykiss Walbaum (formerly Salmo gairdneri), and brown trout, Salmo trutta f. fario L., showed that the plugs of the outer layer of the chorion, which block the channels of the underlying layer, developed distinctive vacuolization at low pH exposure. This may lead to loss of chorional semi‐permeability. Chorions were incompletely degraded at low pH inducing hatching problems. Partially hatched alevins showed only a small local zone of dissolution of the chorion around the head of the embryo preventing the larvae from being freed. Copyright © 1990, Wiley Blackwell. All rights reserved
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页码：301 / 310
页数：10
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