The 3 Stages of a Spiders Life Cycle

All spiders, from the tiniest jumping spider to the largest tarantula, have the same general life cycle. They mature in three stages: egg, spiderling, and adult. Though the details of each stage vary from one species to another, they are all very similar. The spider mating ritual also varies and males must approach a female carefully or he may be mistaken for prey. Even after mating, many male spiders will die though the female is very independent and will care for her eggs on her own. Despite the rumors, the majority of female spiders do not eat their mates. Egg, the Embryonic Stage After mating, female spiders store sperm until they are ready to produce eggs. The mother spider first constructs an egg sac from strong silk that is tough enough to protect her developing offspring from the elements. She then deposits her eggs inside it, fertilizing them as they emerge. A single egg sac may contain just a few eggs, or several hundred, depending on the species. Spider eggs generally take a few weeks to hatch. Some spiders in temperate regions will overwinter in the egg sac and emerge in spring. In many spider species, the mother guards the egg sac from predators until the young hatch. Other species will place the sac in a secure location and leave the eggs to their own fate. Wolf spider mothers carry the egg sac with them. When theyre ready to hatch, they will bite the sac open and free the spiderlings. Also unique to this species, the young spend as many as ten days hanging onto their mothers back. Spiderling, the Immature Stage Immature spiders, called spiderlings, resemble their parents but are considerably smaller when they first hatch from the egg sac. They immediately disperse, some by walking and others by a behavior called ballooning. Spiderlings that disperse by ballooning will climb onto a twig or other projecting object and raise their abdomens. They release threads of silk from their spinnerets, letting the silk catch the wind and carry them away. While most spiderlings travel short distances this way, some can be carried to remarkable heights and across long distances.   The spiderlings will molt repeatedly as they grow larger and theyre very vulnerable until the new exoskeleton forms completely. Most species reach adulthood after five to 10 molts. In some species, the male spiders will be fully mature as they exit the sac. Female spiders are always larger than males, so often take more time to mature. Adult, the Sexually Mature Stage When the spider reaches adulthood, it is ready to mate and begin the life cycle all over again. In general, female spiders live longer than males; males often die after mating. Spiders usually live just one to two years, though this does vary by species. Tarantulas have unusually long life spans. Some female tarantulas live 20 years or more. Tarantulas also continue molting after reaching adulthood. If the female tarantula molts after mating, she will need to mate again, because she sheds the sperm storage structure along with her exoskeleton. Resources and Further Reading Cranshaw, Whitney, and Richard Redak. Bugs Rule!: An Introduction to the World of Insects. Princeton University, 2013.Evans, Arthur V. National Wildlife Federation: Field Guide to Insects and Spiders of North America. Sterling, 2007.Savransky, Nina, and Jennifer Suhd-Brondstatter. â€Å"Spiders: An Electronic Field Guide.† Field Biology, Brandeis University, 2006.

The Emergence Of Cinematic Time - 1869 Words

Tim Hodge In Mary Ann Doane’s The Emergence of Cinematic Time , she opens with an explanation of the historical development of time as we now understand it. I believe that is the most important aspect of the text. She discusses a shift in the fundamental understanding of the existence of time concurrent with the development of the concept of capitalism. This not only shapes our understanding of the image but of a fundamental understanding of our existence in the contemporary world. Though that may seem a tad melodramatic, I challenge you to come up with one aspect of your life and your art that is not affected by your temporal experience. It is difficult to conceive of one aspect of our lives and our art that is not affected by temporal experience. Aside from being late for an appointment, the effect of time is most prevalent when viewing other’s moving images. Doane argues that the creation of capitalistic time grew out of the proliferation of pocket watches and trains. That â€Å"time becomes uniform, homogenous, irreversible and divisible into verifiable units.† (Doane 6) These measured units of time end up having their effect most felt by people. As simplistic as that statement may be that is what productivity and efficiency come down to, the experience of people. The struggle for productivity and efficiency profoundly affect the experience of people. The positive consequences of this are the developments that we see in the world around us such as global travel, modernShow MoreRelatedNew Style of Televisuality713 Words   |  3 Pagesdue to these changing elements in the television industry. The two stylistic worlds within televisuality were the â€Å"videographic† and the â€Å"cinematic†. The videographic style refers to the use of hyperactive effects and multiple graphics (13). These were achieved through the electronic manipulation technology that was rapidly growing during the 1980s. 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Identities are social and cultural formations and constructions essentially subject to the differences of time and place. Then, when we speak of anything, as subjects, we are essentially positioned in time and space and more importantly in a certain culture. These subject positions are what Hall calls â€Å"the positions of enunciation† (222). Hall talks about cultural identity from two different, but relatedRead MoreMarvel Of Comics : Marvel Comics2477 Words   |  10 Pagesof the superhero genre by creating Superman and Batman, Marvel Comics would refine the genre through innovations in storytelling and art in the 1960s, publishing titles such as The Avengers, X-Men, Fantastic Four, and, most notably, Spider-Man. A s time progressed, however, the comic industry changed. Readers became older and a collector’s submarket emerged. 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The story of Heart of Darkness is narrated by its central character, the seasoned mariner Marlowe, a recurring figure in Conrads work. Apocalypse Now features a corollary to Marlowe in Captain Willard, a U.S. Army special forcesRead MoreThere Will Be Blood Analysis1581 Words   |  7 Pagesloneliness, lust for power, false personas, hatred, lack of faith, mistrust and loss of humanity. Anderson explores these themes through the characters of Daniel Plainview and Eli Sunday. In addition to character exploration, Anderson uses a variety of cinematic techniques in order to subtextually portray these themes. These techniques include, contrasting lighting, long shots, wide angles and mis en scene. The first themes to be explored in There Will Be Blood are ambition and loneliness. The film begins

Of Mice and Men Agumentative free essay sample

The ending of the novel Of Mice and Men by John Steinbeck is very thought provoking and is very controversial, and it also raises many questions like Did Lennie really deserve to die at the hands of his only friend? , Why didnt George give Lennie up to the authorities to prolong his life? , What would have happened if Curley and Carlson found Lennie before George did? Audiences remain split in Georges decision to kill Lennie. On one hand, there are those that support Georges decision nd they say that Curley and/or Carlson would have killed Lennie, making him suffer, so it was right on Georges part, and he did not want to see Lennie his only friend suffer so he took the liberty of doing it himself ensuring that Lennie does not die in vain. Like when he told Lennie to look off in the distance and told him to imagine what their future farm would look like, and he told Lennie that he could tend the rabbits Which were his primary concern throughout the entire story, so truly George anted to spare Lennie the pain so he made sure Lennie died with happy thoughts. We will write a custom essay sample on Of Mice and Men Agumentative or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page It is evident that if Lennie had escaped he wouldve died anyways. This is mainly because it is obvious that good hearted Lennie was a danger to himself and others, even if he did not intend to hurt anyone. Earlier in the novel he says (Steinbeck pg. 12) Well, I could. I could go off in the hills there. Some place Id find a cave. then George says (Steinbeck pg 12) Yeah? Howd you eat. You aint got sense enough to find nothing to eat. this argument proves that Lennie cannot sustain life without the aid of other people like George because of his mental issue. Although he was a gentle man, Lennie had previously killed mice, broke Curleys hand, killed a puppy all before he broke Curleys wifes neck. Earlier in the novel Carlson states That it is time to kill a dog when it does no good for itself, and the owner should be the one to do it. Although that is offensive to Lennie, George certainly had that in mind because like Carlson, George gave Lennie a painless death like Carlson did to Candys dog. Of course some might think that what George did to Lennie is pure cold-blooded murder, perhaps because he did not want to deal with the guilt by association. He had the option of helping Lenny escape or at least get him to the proper authorities, where a Jury could obviously declare him mentally deficient. That would have spared his life. But the questions are still the same; did he do it as a mercy to his traveling companion? Or did he do it to protect himself?

Lifespan Development Essay Example

Lifespan Development Paper The paper analyzes the influence of various external factors on the cognitive and physical development of children. The results of an interview with an old relative are used to analyze the real-life implications of such influences and interactions. The paper includes the discussion of Piaget’s development theory, Maslow’s Hierarchy of Needs, and touches upon the questions of food insecurity, maternal personality, and their influence on the developmental and socioemotional outcomes in children. The goal of the paper is to analyze how multiple factors influence children’s development in real-life conditions. The paper can be used in the analysis of the parent-child interactions and the role in the cognitive and physical development of children. Lifespan Development That physical and cognitive development of children is influenced by a multitude of factors is difficult to deny. The availability of the basic resources like food, family environment, social conditions of living and relationships with peers altogether produce a marked impact on how children grow, how they interpret the reality and what they learn about themselves and their lives. A wealth of theories was created, to explain how different factors influence children’s physical maturation and cognition. However, only real-life cases and the analysis of real-life personalities can provide researchers with the detailed information about how children develop and learn. For the purpose of this paper, an interview was conducted with one of the distant relatives: a 85-year-old woman, she has numerous stories to tell about her childhood. Born in extreme poverty, she learned the difficulties of the infant life in a poor family at the early age. We will write a custom essay sample on Lifespan Development specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Lifespan Development specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Lifespan Development specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Her father died when she was 4 years old, and her mother was left with two older children, no job, and no desire to continue her life. The woman was growing and getting mature in the atmosphere of the continuous family stress. She remembers her mother, living in a constant state of depression, because she could not provide for her children. It was not before she was 9 that her mother married for the second time, and they gradually returned to a normal pace of living, with abundant food, clothes, and even additional resources to travel around the country. Before that time, all the woman could remember was hunger. Neither during her infancy nor during the first school years could she create close attachment bonds with her mother. Her mother was never interested in her school successes. She never asked about her problems and was never willing to share her concerns with the other children. There was a continuous sense of separation between them and their mother. As a child, the woman experienced serious problems at school. She failed to catch up with the learning successes of her peers and was one of the worst pupils in her class. She did not have any opportunity to learn at home because of the stressful atmosphere and the feeling of hunger. She could not devote herself to studies and learning, especially after the lunch time which she usually spent away from her classroom room. Surprisingly, but she was able to form numerous friendly relations with the peers from her neighborhood – now she deems these friendships as the only way to escape the stressful atmosphere of her family and house and to have someone to answer her questions about life. Those were the questions her mother could never answer. Another problem was in that she was the smallest in her class, and her classmates used to mock her because of this. Often, she would run away from school and miss lessons because she could no longer tolerate the pressure of her better-off classmates and felt absolutely unprotected in the face of social inequality. The woman believes that it was due to her family difficulties and her mother’s negligence toward her problems and personality that she could not learn to read until the age of 9 and that she lagged behind her peers in the basic disciplines. Based on this information and the results of the recent studies, it is clear that the lack of food and constant hunger did influence the woman’s physiological and cognitive maturation. The lack of maternal attachments/ bonds and family stress added to the complex family atmosphere and made it difficult for the woman to become a successful learner at school. The woman says that school years were the years of discovery and the time when she finally learned the reasons of her failures. This is logical given that, according to Piaget, at the age of 7 the child enters the stage of concrete operations (Anonymous, 2009). At this stage of development, the child learns to conceptualize the surrounding reality and to create logical structures that explain his or her physical experiences (Anonymous, 2009). School experiences led the woman to link her school failures to her hunger, her socially disadvantaged position compared with other classmates, and the lack of maternal support (the woman says that she felt absolutely unprotected in the face of the social inequality). Her failure to close the knowledge gap is easy to explain through the prism of Maslow’s Hierarchy of Needs. According to Maslow, physiological needs are the first and the most important. â€Å"These are biological needs. They consist of needs for oxygen, food, water, and a relatively constant body temperature† (Simons, Irwin Drinnien, 1987). The lack of appropriate food and the constant feeling of hunger created conditions, in which a young girl could not think about anything but the physiological desire to eat. Whether the lack of food explains why the woman was the smallest in her class is difficult to define, but it is clear that she could not successfully meet her learning needs and goals until she could meet her physiological needs. Because of hunger, she could not concentrate on her studies, and felt weak and unprepared to grasp the new knowledge in the classroom. Abraham Maslow states that higher levels of needs are impossible to achieve and satisfy, until the first levels have been satisfied (Simons, Irwin Drinnien, 1987). Surprisingly or not, the sense of hunger in the small girl was constantly accompanied by the lack of maternal support. The feeling that she was not attached to her mother was a part of her daily reality. Those feelings and the pressure of the stressful family atmosphere on the physical and cognitive development of the young girl are easy to explain: Zaslow et al. (2009) discuss the implications of food insecurity for attachment and mental proficiency during infancy and toddlerhood. According to Zaslow et al. Food insecurity is â€Å"limited or uncertain availability of nutritionally adequate and safe foods or limited or uncertain ability to acquire food in socially acceptable ways† (p. 66). Zaslow et al. (2009) are confident that food insecurity does produce a marked impact on the cognitive and physiological development of children and results in behavioral and cognitive problems. Food insecurity raises the probability of grade repetition at school and leads to increased maternal stress and, consequentially, the lack of parental attachment (Zaslow et al. , 2009).