OVERWINTERING OF CALANUS-FINMARCHICUS AND CALANUS-HELGOLANDICUS
OVERWINTERING OF CALANUS-FINMARCHICUS AND CALANUS-HELGOLANDICUS
复制标题
DOI：
10.3354/meps011281
复制
发表时间：
1983-01-01
影响因子：
2.5
通讯作者：
HIRCHE, HJ
中科院分区：
文献类型：
--
作者：
HIRCHE, HJ
越冬期C. finmarchicus和C. helgolandicus进行了研究，在现场和实验室实验中，在浅（120米）瑞典峡湾和深（650米）挪威峡湾。在挪威峡湾，夏末和秋季发现2个种群：在表层，桡足类较小，呼吸和消化酶活性高，更活跃。深层人口，包括桡足类阶段V（CV）和一些女性，是迟钝的，有大的油囊和空的肠子。呼吸酶和消化酶活性很低。在瑞典峡湾CV在深层重量远低于挪威峡湾。在挪威峡湾，特定体重呼吸介于深层和表层种群之间。越冬的桡足类不进食。代谢率只允许在挪威峡湾成功越冬。在越冬过程中的几次实验证明，在现场人口的情况相反，呼吸和蜕皮率增加。蜕皮期间的死亡率和捕获和蜕皮开始之间的时间跨度下降，在秋季和冬季。建议在越冬期间进行内部开发。
Overwintering of C. finmarchicus and C. helgolandicus was studied in the field and in laboratory experiments in a shallow (120 m) Swedish fjord and in a deep (650 m) Norwegian fjord. In the Norwegian fjord 2 populations were found in late summer and autumn: in the surface layer the copepods were smaller and more active with high respiratory and digestive enzyme activities. The deep population, consisting of copepodid stage V (CV) and a few females, was torpid, had large oil sacs and empty guts. Their respiratory and digestive enzyme activities were very low. In the Swedish fjord CV in deep layers weighed much less than those in the Norwegian fjord. Weight-specific respiration was intermediate between deep and surface population in the Norwegian fjord. Overwintering copepodids do not feed. Metabolic rates allowed successful overwintering only in the Norwegian fjord. Experiments performed on several occasions during overwintering witnessed, in contrast to the situation in field populations, increased rates of respiration and molting. Mortality during molting and time span between capture and onset of molting decreased during autumn and winter. Internal development during overwintering is suggested.