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首页> 外文期刊>Zoologischer Anzeiger >Tentacle club length and body condition in the cuttlefishes Sepia elegans Blainville, 1827 and Sepia orbignyana Ferussac, 1826 (Cephalopoda : Sepiidae)
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Tentacle club length and body condition in the cuttlefishes Sepia elegans Blainville, 1827 and Sepia orbignyana Ferussac, 1826 (Cephalopoda : Sepiidae)

机译：乌贼乌贼墨（Sepia elegans Blainville，1827年）和乌贼墨比尼亚尼·费鲁萨克（Sepia orbignyana Ferussac，1826年）的乌贼触手俱乐部长度和身体状况（Cephalopoda：Sepiidae）

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摘要

The hypothesis that size or tentacle clubs - the organs by which decabrachian cephalopods catch prey - has some effects on the quantity of food caught and ingested was tested in four somatically distinct groups of cuttlefish, namely males and females of both Sepia elegans and Sepia orbignyana. To this purpose the relationship between individual body condition, which is the result of diet over time, and relative club length was examined. A statistically significant positive correlation was found between relative body condition factor, K-n = W/aML(b) (where W is the individual cuttlefish body mass, ML is the individual mantle length, and a and b are the parameters of the body mass-mantle length regression) and relative tentacle club condition factor, T-n = CL/cML(d) (where CL is the observed value of club length, M L is the individual mantle length, and c and d are the parameters of the Club length-mantle length regression). On average, a 10% departure of club length from its expected value causes a slight, proportionally direct departure of body mass from its expected value in the range of 1.6-2.0%, according to sex and species. The demonstration of such a correlation in four distinct cuttlefish groups corroborates the existence of an actual cause-effect relationship between relative tentacle club length and condition. Accordingly, it may be supposed that the character 'club length' is affected by natural selection. (c) 2006 Elsevier GmbH. All rights reserved.
机译：大小或触手棍棒（十足纲头足类捕获猎物的器官）对捕获和摄取的食物量有一定影响的假说在四个体格不同的墨鱼组中进行了检验，分别是秀丽线虫和乌贼墨鱼的雄性和雌性。为此目的，检查了随着时间的饮食而导致的个体身体状况与相对球杆长度之间的关系。发现相对身体状况因子之间的统计显着正相关，Kn = W / aML（b）（其中W是墨鱼的个体体重，ML是个体的披风长度，而a和b是体重的参数-地幔长度回归）和相对触手俱乐部条件因子Tn = CL / cML（d）（其中CL是俱乐部长度的观测值，ML是个人地幔长度，c和d是俱乐部长度地幔的参数长度回归）。平均而言，根据性别和种类，球杆长度偏离其预期值10％会导致体重略微成比例地直接偏离其预期值，范围为1.6-2.0％。在四个不同的墨鱼群中证明了这种相关性，证实了相对触手俱乐部的长度和条件之间存在实际的因果关系。因此，可以认为角色“俱乐部长度”受到自然选择的影响。 （c）2006 Elsevier GmbH。版权所有。

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