Why do Meerkats have Different Alarm Calls?

Various primates show ability in their environment, some concepts may exist to other than human species or it may not. The author explains in depth the certain behaviours that come with forms of communication. Throughout this article, understanding the behavioural reasoning to observe predictions from one another. Social environment has been said to be suggested to represent the components. This mainstream article published online has a brief report and explains the facts by categories and only facts not opinions or comments. The specific format which describes the details right away and by the following paragraphs that help me understand it easier because it is not hard to read, the concept is right then and there. I like the fact that this article demonstrates the behavior of primates in formats that are understandable and can represent debate lies. Within assumption the examples given of behavior were simply a chimpanzee trying to go up a tree. A few chimpanzees took different roles tring to help each other up a tree. Experiments are said to look for evidence for primate subjects not just performing an act but also understanding

Humans are prenatally motivated to help those around us due to its evolutionary benefits that our species has a better chance of survival if all cooperate. Humans can also be nurtured to exhibit altruistic behavior through good parenting. Although most of the population agrees that altruism benefits society, scientific research has shown that even those who believe they are altruistic are not when they are put in situations which calls for selfless behavior. One phenomena that refutes the claim that most of the population strives for selfless behavior is known as the bystander effect. The bystander effect is when a person feels less responsible for doing selfless acts when they are in an environment of a group of

This is a summary of the video we saw on the fifth of july’s lecture about John Cleese’s documentary about lemurs. He went on a three week expedition to the forest of Madagascar, to follow five black and white lemurs known as”Carolina five” that were born into captivity and then released into the rainforest. The video discusses the characteristics of several primate species. Lemur behaviors shown include bipedalism, leaping, climbing, playing, sunning, eating, feeding, vocalization, clinging, grooming, and defecation.

Isbell and Wright’s articles both focus on monkey species and their native environments, Africa for Isbell’s (1994) vervet Old World monkey and South America, Peru area, for Wright’s (1994) owl and titis monkeys. The articles main focus is the relationship between these monkeys and their natural predators. Focusing on how the predator aspect of their lives is determined by their environment and adaptations they make to ensure survival. Isbell’s Vervets Year of Doom focuses more on the adaptations that was forced upon the vervets’ because of their changing environment, the death of fever trees. While Wright’s Night Watch on the Amazon focusses more on how the primates way of life affects their relationship with predators and the likelihood of attacks. Both articles have similar aspects however the species way of life, specifically their environment and sleep schedule, are quite different as well as the authors way of observing and studying the primates within their habitats.

This paper aims to study the traits of non-human primates. By observing two types of primates including Common Squirrel Monkey (Saimiri sciureus) and Western Gorillas (Gorilla Gorillas), I try to find out their characteristics, pattern of their behavior, and differences between these two primate species. Especially, characteristics and behavior such as social interaction, food acquisition and intelligence will be discussed and compared in this paper. In order to enhance the persuasiveness of my observation, I recorded and examined at least 25 distinct characteristics of both Common Squirrel Monkeys and Western Gorillas. It is also helpful for me to compare these two primates. Apart from exploring the primates’ traits and differentiation between them, this paper will discuss the effects of captivity. How being in captivity and on display in a zoo would influence their behaviors and emotions? The observation was a great success and I have successfully derived with a hypothesis base on our observing data. The ultimate goal of this paper is arousing humans’ awareness of the importance of studying primates.

Orangutans (Figure 3) are our first cousins since they share 97 percent of our genetic material. Contrary to other apes, orangutans are semi solitary which is unique in its social organization (3). Adult males which are the most solitary, and they associate with only their current, former, and potential consorts. For the semi-solitary orangutans, the only playmate is its mother. Even female adults are more social than male ones, rarely they groom, touch, hold hands, chase, or fight. On rare occasions, female adults may groom; however, it lasts only few seconds. Sometimes, female adults meet and travel with one another to express the close relationship. The long call by a male orangutan expresses an alert to others about his presence. Usually, other orangutans only react if the call is close by or aggressive towards them. Male orangutan can use vocalization to express that he is angry and frustrated, and that call signals a threat to another male (3). Female orangutans also produce vocalization when they get upset by the presence of another male.

According to the Merriam-Webster online dictionary(2015), alarm is defined as “a device that makes a sound to create a warning about something” (Merriam-Webster Dictionary, 2015). The Macmillan dictionary defines alarm as “the fear or worry that something unpleasant or dangerous might happen” (Macmillan Publishers, 2015). Stedman’s concise medical dictionary for the health professions (2001) further defines alarm as “a device to help people to be aware of an unwanted occurrence or event by signal” (Stedman & Dirckx, 2001).

Dawkins (1976) also provides evidence that altruism is ultimately selfish. He separated individuals into three categories in regards to prosocial behaviour displayed. These were grudgers, cheats and suckers. Grudgers were deemed to be the most evolutionary stable category, as they could control and ‘punish’

The ability to recognize particular individuals becomes highly important when living in a social setting, for many Pinnipeds living in a collective group atmosphere this capability proves highly beneficial, especially for mothers. By merging numerous studies centered on vocal and kin recognition, as well as the evolutionary forces driving such a unique skill set and their impact on the fitness of the species in general, under a more critical lens, a better understanding of these social animals can be established. The following collection of research is divided into multiple subsets focusing on both the proximate and ultimate causes associated with individual recognition within the various families of Pinnipeds.

An oxymoron appeared to exist between Darwin’s theory of natural selection (1859) and the definition of altruism (West et al., 2006). Hamilton’s theory of inclusive fitness (1964) appeared to mediate this problem. However, the theory does not explain altruistic acts towards non-kin in line with natural selection. Reciprocal altruism (Trivers, 1971), indirect altruism (Alexander, 1987) and strong reciprocity (Gintis, 2000) have been proposed to resolve this conflict. It is of note that behaviour in all theories has been noted in animals, but will not be discussed further. Instead, the essay will focus on which theories are most relevant when understanding human sociality, with the author explaining why no sole theory is seen to describe the phenomenon. All theories will be discussed in relation to evolutionary stable strategies (ESS), which refers to plans that when adopted by a majority of members in a population that restrict any other action existing, which could yield higher reproductive success (Smith & Price, 1973).

Orcas live in flocks. They have consideration for the weakness of their group. For example, if there is a newborn baby, other females take care of the baby when the mother hunting. The researcher already had been observed this behavior. Orcas hunting also in groups. That time, they give out sound as a hunting language to communicate with each

Research by Yamamoto, Humle and Tanaka in 2009 concluded that chimpanzees show altruism only when prompted or pressured rather than voluntarily [5]. This particular empirical research challenges the evidence proposed by prior researchers and tests the limits of chimpanzee’s altruistic nature. Using colour-coded tokens, one of which allowed for a partner to share the reward with the test subject and one of which gave the test subject all of the reward, several chimps were tested as to their response. Results showed a tendency for the chimpanzee to take the prosocial option in situations both with and without peer pressure. Abnormally results showed that pressure or harassment from partners reduced the chimpanzee’s inclination to take the prosocial option. Although these results challenge prior research [5] they are limited as they are not conclusive and raise questions of their own to reach a complete understanding. These research results are significant in challenging an already established understanding of chimpanzee’s altruistic traits and acts as a good contrast to other references. This resource stands out as it does not make conclusive statements out of abnormal results but rather opens up a reader’s opinion and presents issues further

Charles Darwin, R.A Fisher and J.B.S Haldane were the first to mention the basic principle of kin selection but a biologist named W.D Hamilton was the first to put forward the first general model. Hamilton called this the ‘inclusive fitness’ theory but later in 1964 a man named Maynard Smith renamed it ‘kin selection’. (1) Kin selection is used to study social behaviour in animals. Ideally, kin selection only came about through the discovering of ‘altruism’. Altruism is when an organism does something for another organism even at the expense of its own survival. Without the discovery of altruism, scientists may not have been able to stumble upon kin selection. Kin selection is when an organism will endanger itself and risk its own survival to see another organism of its own species expand and thrive, this is seen very much so amongst the honey bees. Even though most honey bees cannot reproduce and are solely worker bees, they still aid in the

Nevertheless, one recent study suggests that genetic differences between our ancestors could have resulted in lethal intergroup competition which disfavoured non-altruists [6]. I will attempt to link this theory to what is known as kin selection. Kin selection explains altruism as an act increasing the probability of an individual’s genes being transmitted to the next generation. [3] We share half of our genes our siblings and parents, and a quarter with cousins, nephews and nieces. [1, 2] Therefore, altruistic behaviour towards these individuals would result in our genes passing on due to their higher probability of survival. This is known as increasing one’s inclusive fitness. [7] Since early human societies included members genetically related to one another, [6] kin selection between these individuals resulted in the societies growing in size. Thus, societies genetically predisposed in displaying co-operative, altruistic behaviour towards each other (through acts such as group hunting, mutually defending each other, and sharing food) are more capable of surviving, resulting in the altruistic gene surviving.[1] This, I believe, is the predominant explanation for altruism in humans today. The act of altruism is a genetic inheritance evolving through the basic instinct of survival and continuity of species.

Altruistic acts are often seen through the benevolent acts of family members express towards each other on a regular basis. Because of the significant amount of genes we share with our kin, the survival of a family is prioritized equally to the survival of the individual. Each member of the family will therefore behave altruistically towards each other, due to the evolutionary drive for survival. The reason that parents behave this altruistically towards their offspring is because “parents (adults) are in a maximally favorable position to dispense inexpensive aid to offspring (eggs) that maximally resembles the parents genetically” (Alexander, 462). Even through altruism is perhaps highest between family members, people also feel more empathetic towards others who possess similar traits, as a large number of genes are share. As altruism “involves a loss of individual fitness, [it] can evolve only by group selection” (Nunney, 228). Therefore, we can see that nature’s force of the survival of the group is a primary driving factor for the appearance of altruism.