英国伯明翰论文代写:红狐饮食变化

2018-01-21 00:00

环境是红狐饮食变化的一个关键方面。今天，红狐狸存在于这个国家的乡村、城市和郊区，那里有各种各样的食物可供选择。红狐狸会捕食各种鸟类、小型哺乳动物、昆虫和其他无脊椎动物。他们还会吃大约四分之一的狐狸的水果和蔬菜，虽然它不能像肉一样维持红狐狸。(自然英格兰2007和Zimen 1980)。对于狐狸来说，最适合的栖息地之一是拥有高密度的小型哺乳动物，如兔子、野兔和田鼠。这些动物很容易被狐狸捕获并提供足够的能量和物质来维持一只红狐狸(Zimen 1980)。缺乏这种猎物的环境在理论上是不适合狐狸生存的地方。然而，在这个国家和世界各地的狐狸中，有无数的例子，它们生活在小哺乳动物的栖息地中，它们是它们日常饮食的一部分，但它们仍在茁壮成长。(Zimen 1980)。生活在城市环境中的狐狸对那些生活在农村的人有着相对不同的饮食习惯。这些狐狸有一些不同的食物来源，可以说比捕猎小型哺乳动物更容易获得。最主要的例子是人为的食物，在许多城市环境中，由于人类的人口，它是丰富的。(2001年哈里斯和贝克)。在这个过程中，红狐狸可以在消耗少量能量的同时清除大量的废弃肉类和其他食物。其他的食物来源，如腐肉，水果，甚至宠物，都意味着红狐狸可以成功地生活在这个坚硬的水泥丛林中，而不需要它的天然食物。(麦克唐纳和Sillero-Zubiri 2004)。狐狸捡到的食物也吸引了它们在农村地区的一些天然猎物，这给了它们充分的机会去猎食猎物。
英国伯明翰论文代写:红狐饮食变化
Environment is a key aspect in the variation of the red fox's diet. Today the red fox exists in Rural, urban and suburban environments in this country and there is a large variety of food available to them. Red foxes will prey on a range of birds, small mammals, insects and other invertebrates. They will also eat fruit and vegetables which account for about one fourth of the foxes diet, although it cannot sustain the red fox as well as meat would. (Natural England 2007 and Zimen 1980). One of the most suitable habitats for a fox is one that has a high density of small mammals such as rabbits, hares and voles. These animals are easy for the fox to catch and provide enough energy and substance to sustain a red fox (Zimen 1980). An environment that lacks this kind of prey would in theory be an unsuitable place for a fox to survive. However there are countless examples in this country and across the world of foxes that are living in habitats where small mammals are a fairly minute part of their diet and yet they are still thriving. (Zimen 1980). Foxes living in urban environments have a comparatively different diet to those living in rural habitats. These foxes have a few different food sources which are arguably easier to obtain than hunting small mammals. The prime example of this is anthropogenic food which is in abundance in many urban environments due to the population of humans. (Harris and Baker 2001). The red fox can scavenge an array of discarded meat and other food whilst using minimal energy in the process. Other food sources such as carrion, fruits and even pets mean that the red fox can successfully live in this tough concrete jungle without its natural diet. (MacDonald and Sillero-Zubiri 2004). The food that the foxes scavenge also attracts some of their natural prey in rural areas giving them ample opportunity to hunt live prey.

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