【摘要】 论文以强额孔雀水蚤(Parvocalanuscarssirostris)为研究对象,研究了不同培养温度(18℃、22℃、 26℃、 30℃)、不同种类微藻(球等鞭金藻(Isochrysisgalbana)、牟氏角毛藻(Chaetoceros muelleri)、青岛大扁藻(Platymonas helgolandica))饵料以及不同饵料质量浓度(0.5、 1.0、 1.5、 2.5、5μgC/mL)对强额孔雀水蚤摄食的影响。结果表明:强额孔雀水蚤的清滤率随温度上升而上升,随饵料浓度上升而下降,26℃～30℃以及饵料浓度为0.5μgC/mL时清滤率较高;滤食率和摄食率随温度上升而上升,摄食球等鞭金藻和牟氏角毛藻时,在26℃时达到最高;摄食青岛大扁藻时,两者随温度升高持续上升。对3种藻的摄食率大小顺序为:青岛大扁藻>球等鞭金藻>牟氏角毛藻;强额孔雀水蚤摄食碳量占体碳比较高,远高于中华哲水蚤(Calanussinicus)、海洋伪镖水蚤(Pseudodiaptomus annandalei)等大中型桡足类;强额孔雀水蚤的最适饵料等效球直径约为11.5μm,青岛大扁藻为强额孔雀水蚤较适口的饵料。更多还原

【Abstract】 In order to optimize the culture conditions, the effects of different temperatures(18℃, 22℃, 26℃, and 30℃), different food types(Isochrysisgalbana, Chaetoceros muelleri, and Platymonas helgolandica), as well as different food concentrations(0.5, 1.0, 1.5, 2.5, and 5.0 μgC/mL) on the ingestion of Parvocalanus crassirostris were investigated. The results showed that:(1) The clearance rates increased with temperature increase, but decreased when food concentration increase. The clearance rates had the highest values at 26℃～30℃ when the food concentration was 0.5 μgC/mL;(2) The grazing and ingestion rates increased with temperature increase while feeding on I. galbana and C. muelleri and reached the highest level at 26℃. Additionally, both the grazing and ingestion rates increased while feeding on P. helgolandica when the temperature elevated from 18℃ to 30℃. The order of the ingestion rate for three algae species were as flowing: P. helgolandica>I. galbana>C. muelleri;(3) The weight-specific ingestion rates of P. crassirostris for body carbon content per day is higher than that of the large copepods such as Calanus sinicus and Pseudodiaptomus marinus;(4) The optimum food equivalent sphere diameter of P. crassirostris is about 11.5 μm, and P. helgolandica is a suitable feed when the cell size was considered.更多还原