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An analysis of maximum body size and designation of size categories for notothenioid fishes

机译：用于Nottheniaid鱼类的最大体积和尺寸类别的分析

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There has been no comprehensive study of body size in notothenioid fishes. Therefore I evaluated maximum total length (TL) as an axis of the evolutionary radiation. Lengths are provided for 141 species that collectively range in maximum adult size from 5.7cm (Harpagifer nybelini) to 225cm (Dissostichus eleginoides), a 39-fold difference. For the 138 species analyzed, the mean length is 33.5cm and the median is 26.6cm. Based on 10cm-bins, notothenioids are apportioned into small (10cm), medium (10-39cm), medium-large (40-91cm), and large (200cm) size categories. The 20-29cm bin contains the most species (32%). Most species (71%) are of medium size, 21% of species are medium-large, and 7% and approximate to 1% are small and large, respectively. The median lengths vary among the five cryonotothenioid families as well as among eight clades (genera and families). Among families, median and mean lengths are smallest in the Harpagiferidae and largest in Channichthyidae. Among clades, Harpagifer has the smallest median length (8.3cm) followed by Artedidraco (12.5cm). Several middle-sized clades do not differ in median size: Patagonotothen, Trematomus, Pogonophryne, and Bathydraconidae. Two clades of medium-large size species, Notothenia and Channichthyidae, are of similar size. A significant but weak positive relationship exists between maximum length and maximum depth. With the exception of miniature species (1cm), the 126 species of cryonotothenioids (the Antarctic clade) encompass the range in size categories in actinopterygians in general, and the disparity in maximum lengths among individual species indicates that body size is an axis of the radiation. I discuss the size of notothenioids relative to other teleosts, the ecological implications of large species in the food web, and the similarity of the cryonotothenioid axes of diversification to those of Lake Baikal sculpins.
机译：在Notthenioid鱼类中没有全面研究体型。因此，我评估了最大总长度（TL）作为进化辐射的轴。提供141种的长度，以5.7厘米（Harpagifer Nybelini）至225cm（抑制秀丽骨骨），差异为39厘米的最大成人大小范围。对于分析的138种，平均长度为33.5cm，中位数为26.6cm。基于10cm-in，通知分配到小（<10cm），中等（10-39厘米），中大（40-91cm）和大（> 200cm）尺寸类别中。 20-29cm箱含有大多数物种（32％）。大多数物种（71％）中等大小，21％的物种是中大，7％和近1％分别小而大。中位数长度在五个低温噻吩（The Fild）以及八个枝条（属和家庭）中变化。在家庭中，中位数和平均长度在Harpagiferidae和Channichthyidae中最大的长度最小。在片状中，Harpagifer具有最小的中间长度（8.3cm），然后是artedidaraco（12.5cm）。几个中位数的中位数的尺寸没有不同：巴塔哥尔顿，巨乳，Pogonophyne和乙酰吡喃松糖尿病。两种中大尺寸物种，通知和通道的两种曲线具有相似的大小。在最大长度和最大深度之间存在显着但弱的阳性关系。除了微型物种（1cm）外，126种低温培养基（南极）（南极型材）一般地包含肌动植物中的尺寸类别的范围，各种物种之间的最大长度的差异表明体型是辐射的轴线。我讨论了相对于其他极端的Intotheniods的大小，食物网中大物种的生态影响，以及低温培养轴的相似性与贝加尔湖斯科纳湖的多样化。

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