这是2008--2019年间对墨西哥瓜达卢佩岛的有乌贼造成的伤疤的大白鲨 科考统计，共有14条大白鲨身上有乌贼之类造成的伤疤（瓜达卢佩岛附近大白鲨总数大约为120条）
其中一楼图的ab对应WS11，c对应WS12，d对应WS01，e对应WS13

The interactions between sharks and cephalopods are fundamental in coastal and oceanic ecosystems Cephalopods can represent up to 98% of the diet biomass of species such as the blue shark Prionace glauca, the scalloped hammerhead Sphyrna lewini (68%), or the pelagic thresher Alopias pelagicus (69%), because they provide nutrients in terms of proteins, carbohydrates and fatty acids. In some species such as the white shark Carcharodon carcharias, previous studies have suggested that cephalopods are an important component of their diet, since large amounts of squids have been found in their stomachs and are reflected in the isotopic values of their muscle
鲨鱼和头足类之间的相互作用是海洋生态系统的重要组成部分。例如大白鲨，此前的研究表明头足类是其饮食的重要组成部分，因为在其胃中发现了大量鱿鱼，并在其肌肉的同位素值中得到反映

A total of 14 white sharks were detected with unusual scars on their body during August–December of the years 2008, 2012, 2013, 2017 and 2019 (Table 1; Fig. 1). The average size (TL) of the white sharks was 3.7 m (SD±0.6), in which nine sharks (64%) were males (seven subadults; two adults) and five were females (36%; three subadults; two adults). Regarding sexual maturity, the majority of white sharks observed with scars were subadults (n=10; 71%), although adults were also observed (n=4; 29%). The shark WS11 was first observed with a scar on its trunk on 13 October 2017, which was detected again with the same scar during its recapture in August and September 2019. A few weeks later, this shark was registered with new scars that were first recorded in September, October and November (Fig. 1a,b), which indicates that this interaction likely occurred in Guadalupe Island between September 9–21 (Table 1).
在2008年，2012年，2013年，2017年和2019年的8月至12月期间，共检测到14头鲨鱼身上有异常疤痕（表1；图1）。白鲨的平均大小（TL）为3.7 m（SD±0.6），其中九条鲨鱼（64％）是雄性（七条亚成年；两条成年），五只鲨鱼是雌性（36％；三条亚成年；两条成年）。 。，观察到的大多数带有疤痕的大白鲨是亚成体（n = 10，占71％），尽管也有成年 （n = 4，占29％）。鲨鱼WS11于2017年10月13日在其树干上首次发现有疤痕，在其于2019年8月和2019年9月重新捕获期间再次发现相同的疤痕。数周后，该鲨鱼记录了新的疤痕，首次记录在9月，10月和11月（图1a，b），这表明这种相互作用可能发生在9月9日至21日之间的瓜达卢佩岛（表1）
The scars observed on the white sharks were double or single layers with multiple sucker marks around the shark's head and in the trunk between the dorsal and pectoral fins (Fig. 1). Wounds near the shark's mouth and trunk suggest a defensive response from squid to the white shark, although this could not be confirmed. The pattern and shape of the scars matches the suction cups on the arms and tentacles of cephalopods as observed in other shark species17. The estimation of the diameter of the most evident sucker marks in the shark WS11 (Fig. 1a) allowed us to determine that the left side scar (≈ 20 cm long) had suction cups that measured 1–3 cm, while the length of the right side scar measured ≈ 60 cm long. Even though the cephalopod species could not be confirmed, observed marks from all analysed sharks could suggest an encounter with taxa such as the jumbo squid D. gigas, the neon flying squid O. bartramii, or the giant squid A. dux based on their potential distribution, arms and tentacles length, as well as the estimated size of the scars and suckers1
大白鲨上观察到的疤痕是双层或单层，在鲨鱼的头部周围以及背鳍和胸鳍之间的躯干中有多个吸盘痕迹（图1）。鲨鱼口和躯干附近的伤口表明鱿鱼可能对大白鲨有防御性反应，尽管这些无法确定。如在其他鲨鱼种类中观察到的那样，疤痕的图案和形状与头足类的手臂和触手上的吸盘相匹配17。对鲨鱼WS11（图1a）中最明显的吸盘痕迹直径的估计，使我们能够确定左侧疤痕（约20厘米长）上的吸盘长为1-3厘米。而右侧疤痕约60厘米长。即使无法确定头足类物种，从所有被分析的鲨鱼身上观察到的痕迹以及触手的长度以及疤痕和吸盘的估计大小也可能提示它们与jumbo squid，neon flying squid或大王乌贼等类群相遇。 （不太懂乌贼种类，不知道那俩的汉语是啥）

Squid interactions have been widely observed in other large marine predators such as sperm whales Physeter macrocephalus21,22. These interactions have been confirmed by the presence of squid beaks in the stomachs of sperm whales, in addition to the scars observed on the head and body of these cetaceans21,22. The fact that squid cause these marks on sharks suggests an extremely aggressive encounter between predator and prey, in which the defensive scars protrude on the head, gills and body of the white shark. The suction power of the arms and tentacles of large squids is likely to deform the structure of the shark dermal denticles and hence the scars, and in some cases generate open wounds depending on the intensity of the embrace
鱿鱼和其他大型海洋捕食者的相互作用也被广泛观察到，例如抹香鲸。这些交互作用已被抹香鲸的胃中存在鱿鱼喙证实，此外在这些鲸类动物的头和身体上还观察到了疤痕 。鱿鱼在鲨鱼上造成这些痕迹的事实表明，捕食者与猎物之间会发生激烈的对抗，在防御中，疤痕会突出在大白鲨的头部，腮和身体上。大鱿鱼的手臂和触手的吸力可能会使鲨鱼皮状细齿的结构变形，从而使疤痕变形，并且在某些情况下，会根据拥抱的强度而产生开放性伤口
The consumption of cephalopods could be essential in the diet of the white shark by allowing a quick digestion and absorption due to the large amount of proteins and low lipid content present in this group of invertebrates3,24,25,26. In addition to the protein content, it has been suggested that some cephalopod species such as D. gigas contain high contents of essential fatty acids for shark reproductive processes, such as gonadal maturation and embryonic development, which could favour spermatogenesis in subadult males and pregnancy in adult female
头足类在大白鲨的食谱中不可或缺，因为这鞋无脊椎动物中存在大量的蛋白质且脂质含量低，因此可以快速消化和吸收。除蛋白质含量外，有人认为某些头足类物种（例如D. gigas）含有高含量的鲨鱼生殖过程必需脂肪酸，例如性腺成熟和胚胎发育