英语翻译Willmer (1934) suggested that the acidity of the water a
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英语翻译
Willmer (1934) suggested that the acidity of the water and
the presence of carbonic anhydrase in the blood may assist the passage of carbon
dioxide across the gill membranes.It seems safe to conclude that acidity of the water
aids the transfer of carbon dioxide into the blood and therefore low pH at least assists
in the control of breathing by acting together with carbon dioxide.
It is of interest that an increase in CO2 content of the water always results in an
increased frequency of air breathing in Anabas.A similar effect was found in lung-
fishes by Johansen et al.(1967) and by Johansen & Lenfant (1968).The mean,maximum
and minimum intervals between air breaths diminish slowly with increasing CO2
content.
When climbing perch are in saturated tap water the mean time interval between
air breaths is about 10 min.It was found that when gas mixtures of oxygen and
nitrogen were bubbled into the water,air-breathing increased to higher levels (Tables
1-3).This increase in air-breathing occurred even though the fish had a raised
branchial ventilatory frequency.It can be seen from Tables 2 and 3 that though the
total CO2 content of the water was about 9-10 vols.% there was an absence of
free carbon dioxide in such water brought about by bubbling of the nitrogen gas
mixture.
Willmer (1934) suggested that the acidity of the water and
the presence of carbonic anhydrase in the blood may assist the passage of carbon
dioxide across the gill membranes.It seems safe to conclude that acidity of the water
aids the transfer of carbon dioxide into the blood and therefore low pH at least assists
in the control of breathing by acting together with carbon dioxide.
It is of interest that an increase in CO2 content of the water always results in an
increased frequency of air breathing in Anabas.A similar effect was found in lung-
fishes by Johansen et al.(1967) and by Johansen & Lenfant (1968).The mean,maximum
and minimum intervals between air breaths diminish slowly with increasing CO2
content.
When climbing perch are in saturated tap water the mean time interval between
air breaths is about 10 min.It was found that when gas mixtures of oxygen and
nitrogen were bubbled into the water,air-breathing increased to higher levels (Tables
1-3).This increase in air-breathing occurred even though the fish had a raised
branchial ventilatory frequency.It can be seen from Tables 2 and 3 that though the
total CO2 content of the water was about 9-10 vols.% there was an absence of
free carbon dioxide in such water brought about by bubbling of the nitrogen gas
mixture.
威尔默(1934)认为,水的酸度和
血液中的碳酸酐酶的存在可能会协助碳的通道
在鳃膜的二氧化碳.似乎可以得出这样的结论:水的酸度
艾滋病的二氧化碳进入血液,因此至少低pH协助转移
在控制的作用与呼吸二氧化碳.
总是在水中CO2含量的增加,结果在一个很感兴趣
在攀鲈呼吸频率增加.肺中发现的类似的效果—
约翰森等人的鱼.(1967)和由约翰森和朗方(1968).平均,最大
之间的最小间隔减少空气呼吸缓慢增加CO2
内容.
当攀登的鲈鱼在饱和水之间的平均时间间隔
空气呼吸约10分钟.结果发现,当氧混合气体
氮气鼓泡到水里,呼吸空气的上升到更高的水平(表
1-3).这增加了空气呼吸发生即使鱼了
鳃呼吸频率.它可以从表2和表3看出,虽然
水的总CO2含量约9-10卷.%1没有
用氮气鼓泡了水游离二氧化碳
混合物.
血液中的碳酸酐酶的存在可能会协助碳的通道
在鳃膜的二氧化碳.似乎可以得出这样的结论:水的酸度
艾滋病的二氧化碳进入血液,因此至少低pH协助转移
在控制的作用与呼吸二氧化碳.
总是在水中CO2含量的增加,结果在一个很感兴趣
在攀鲈呼吸频率增加.肺中发现的类似的效果—
约翰森等人的鱼.(1967)和由约翰森和朗方(1968).平均,最大
之间的最小间隔减少空气呼吸缓慢增加CO2
内容.
当攀登的鲈鱼在饱和水之间的平均时间间隔
空气呼吸约10分钟.结果发现,当氧混合气体
氮气鼓泡到水里,呼吸空气的上升到更高的水平(表
1-3).这增加了空气呼吸发生即使鱼了
鳃呼吸频率.它可以从表2和表3看出,虽然
水的总CO2含量约9-10卷.%1没有
用氮气鼓泡了水游离二氧化碳
混合物.
英语翻译Willmer (1934) suggested that the acidity of the water a
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