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| 1 | 北黄海秋季黄鮟鱇摄食习性的初步研究显示文摘根据2007年秋季在黄海北部海域进行的定点底拖网调查,对黄鲛鲸(Lophius litulon)的摄食习性进行了初步研究。结果表明,黄鲛鲸在秋季主要以底层鱼类和虾类为食,优势饵料生物是矛尾虾虎鱼(Chaeturichthys stigmatias)和脊腹褐虾(Crangon affinis),其中矛尾虾虎鱼在食物组成中所占的比例最高,是黄鲼鲸最重要的饵料生物。典范对应分析表明,水深、经度和纬度对黄鲛鲸的食物组成有显著影响(P〈0.05),而体长、性别和性腺成熟度则没有显著影响(P〉0.05)。黄鲼鲸摄食矛尾虾虎鱼和脊腹褐虾的体长范围分别是32~152mm和34-79mm,平均体长分别为(80.8±1.88)和(53.2±3.11)(S.E.)mm,它与2种饵料生物的体长之间没有显著的相关关系。黄鲛鲸与矛尾虾虎鱼和脊腹褐虾体长的比率分别为1.19~5.14和2.38~6.02,平均值分别为(2.67±0.09)和(4.23±0.29)(S.E.),黄鲛鲸与2种饵料生物体长的比率与黄鲅鲸的体长之间存在极显著的正相关关系。 | 薛莹 徐宾铎 高天翔 徐浩 林龙山 | 2010 | 中国海洋大学学报(自然科学版)2010，40，9： | 10 |
| 2 | Beak Measurements of Octopus (Octopus variabilis) in Jiaozhou Bay and Their Use in Size and Biomass Estimation显示文摘Cephalopods play key roles in global marine ecosystems as both predators and preys.Regressive estimation of original size and weight of cephalopod from beak measurements is a powerful tool of interrogating the feeding ecology of predators at higher trophic levels.In this study,regressive relationships among beak measurements and body length and weight were determined for an octopus species(Octopus variabilis),an important endemic cephalopod species in the northwest Pacific Ocean.A total of 193 individuals(63 males and 130 females) were collected at a monthly interval from Jiaozhou Bay,China.Regressive relationships among 6 beak measurements(upper hood length,UHL;upper crest length,UCL;lower hood length,LHL;lower crest length,LCL;and upper and lower beak weights) and mantle length(ML),total length(TL) and body weight(W) were determined.Results showed that the relationships between beak size and TL and beak size and ML were linearly regressive,while those between beak size and W fitted a power function model.LHL and UCL were the most useful measurements for estimating the size and biomass of O.variabilis.The relationships among beak measurements and body length(either ML or TL) were not significantly different between two sexes;while those among several beak measurements(UHL,LHL and LBW) and body weight(W) were sexually different.Since male individuals of this species have a slightly greater body weight distribution than female individuals,the body weight was not an appropriate measurement for estimating size and biomass,especially when the sex of individuals in the stomachs of predators was unknown.These relationships provided essential information for future use in size and biomass estimation of O.variabilis,as well as the estimation of predator/prey size ratios in the diet of top predators. | XUE Ying REN Yiping MENG Wenrong LI Long MAO Xia HAN Dongyan MA Qiuyun | 2013 | Journal of Ocean University of China2013，12，3： | 2 |
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