A comparative study of nitrogen excretion in twenty-three cockroach species.
A comparative study of nitrogen excretion in twenty-three cockroach species.
复制标题
二十三种蟑螂氮排泄的比较研究。
DOI：
10.1016/s0300-9629(76)80162-4
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
D. Cochran
中科院分区：
文献类型：
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作者：
D. Mullins;D. Cochran
本文研究了11个亚科23种蜚蠊的氮和阳离子排泄和贮存。测定了体外排泄的氨氮、尿酸氮、总氮、钾和钠。还报告了体内总氮、体内尿酸盐氮以及体内钾和钠的数据。体氮与尿酸氮呈显著正相关。某些物种含有非常高水平的尿酸和尿酸盐，占其体内总氮的72%。另一方面，其他物种被发现含有低水平的尿酸和尿酸盐，仅占其体内氮的3%。内部氮储存和外部氮排泄之间的相关性不太显著。某些物种可以被归类为排尿酸的，因为多达62%的总粪便氮可以作为尿酸氮排出。其他物种可以被指定为ammonotelic，因为他们可以排泄多达70%的总粪便氮作为氨氮。体内氮潴留增加可能与体内钾或钠或两者的增加有关。氮以尿酸的形式在体内储存，似乎涉及钾或钠的尿酸盐的形成，或两者兼而有之。
Nitrogen and cation excretion and storage in 23 species of cockroaches representing 11 subfamilies were examined. Measurements of externally excreted ammonia nitrogen, uric acid nitrogen, total nitrogen, potassium and sodium were made. Data for total body nitrogen, body urate nitrogen and body potassium and sodium are also reported. A significant correlation was found between body nitrogen and body uric acid nitrogen. Certain species contained very high levels of uric acid and urates representing as much as 72% of their total body nitrogen. On the other hand, other species were found to contain low levels of uric acid and urates, representing as little as 3% of their body nitrogen. A less significant correlation was found between internal nitrogen storage and external nitrogen excretion. Certain species could be classified as uricotelic, since as much as 62% of their total faecal nitrogen may be excreted as uric acid-nitrogen. Other species could be designated as ammonotelic, since they may excrete as much as 70% of their total faecal nitrogen as ammonia nitrogen. Increased body nitrogen retention may be correlated with increases in body potassium or sodium, or both. The internal storage of nitrogen as uric acid appears to involve the formation of urate salts of potassium or sodium, or both.