How to Distinguish Female Lobsters From Males

Want to know the sex of a lobster you have caught or are about to eat? Here are several ways to tell: Lobster Anatomy Lobsters have feathery appendages called swimmerets, or pleopods, underneath their tails. These swimmerets help a lobster swim and are also where a female lobster  (sometimes called a hen)  carries her eggs. Swimmerets also can clue you in to the sex of a lobster. The first pair of swimmerets (the pair closest to the head) just behind the walking legs point up toward the head. They are thin, feathery, and soft on a female  but hard and bony on a male. Also, the female has a rectangular shield between her second pair of walking legs, which she uses to store sperm after mating with a male. This is where the male inserts those hard swimmerets during mating, releasing sperm that the female stores. When its time to release her eggs, they flow past the sperm and are fertilized. The female stores these eggs under her abdomen (tail) for 10 to 11 months.   Because they carry eggs, females tend to have a wider tail than males. Females carrying fertilized eggs arent usually harvested, but inside a female lobster you might find unfertilized eggs, or roe. They are green when fresh and bright red after the lobster is cooked. (They are also called coral because of the color.) These can be eaten.  Females can carry up to 80,000 eggs at one time.   Courting Ritual Despite their ferocious appearance, lobsters have a complex courtship ritual that is often described as touching.  Males and females mate after the female molts. The males live in caves or dens, and as her molting time draws near, a female visits the dens and wafts a pheromone toward the male via her urine, which is released from openings near her antennae. The male energetically beats his swimmerets. Over a few days, the female approaches the den and checks out the male. They eventually initiate a mock boxing match and the female enters the den. During molting the female is vulnerable—she is very soft and takes at least half an hour to be able to stand—so the male protects her. At this point the male rolls the female over onto her back and transfers the sperm packet, or spermatophore, to the females seminal receptacle. The female holds her eggs until she is ready to fertilize them.   Spiny Lobster Sexing Spiny lobsters (rock lobsters) are usually sold as tails, rather than live, so you might not get a chance to try out your lobster sexing skills at a market that sells spiny lobsters.  However, these lobsters also can be sexed using the swimmerets on the underside of their tails.   In females, the swimmerets on one side might overlap those on the other. You might also see a dark patch, where the spermatophore is located at the base of her last pair of walking legs. They might also have claw-shaped pincers at the end of their fifth pair of walking legs that help hold the eggs.  Roe mmight be found inside whole spiny lobsters. Sources: Lobsters, Gulf of Maine Research Institute Lobster 101: Reproduction and Life Cycle, Maine Lobstermens Community AllianceHow to Determine the Sex of Regulated Invertebrates, State of Hawaii Division of Aquatic Resources Lobster Biology, The Lobster Conservancy

Weather And Geography Essay - 1126 Words

Description of Weather/Climate So our weather in Iowa has patterns because we have seasons. Our seasons are Winter, Spring, Summer and Fall. They have a pattern on when they change Winter starts December 22nd, Spring starts March 22nd, Summer starts June 22nd and Fall starts September 22nd and then the pattern starts all over again. It depends on what season you are in to determine how cold/hot it will be outside and how much rain/snow it will get. The seasons change because when the earth is closest to the sun that is when we have our fall and winter because even tho we are at our closest to the sun our earth is tilted farther away from the it and that is why it gets colder. But when it is summer and spring we are further away from†¦show more content†¦An abiotic factor at the Katoski Park is the temperature, weather and climate. The abiotic factor affects the biotic and flora because since abiotic is weather and nonliving things but biotic is living things. A biotic factor is living things so is just th e opposite of abiotic. Examples of this would be animals, humans, plants etc. anything that is living. We have animals that hibernate in the Winter because they can’t survive in the temperature that winter provides for them so they have to hibernate. But like an example polar bears can’t live in Iowa even though in Iowa we have winter and it is really cold but the polar bear can’t live here because it is not cold enough here and it would die. Ecosystem The ecosystem that the Katoski Park has is a temperate grassland, temperate woodland, and a temperate forest. Temperate grassland means grassland that is covered in thick grass. Here is and example right from the Katoski Park of what a temperate grassland would look like at the park. Temperate woodland means less annual rainfall in the summer and is hot in humid but has more rainfall in the fall. This is another example of what a temperate woodland would look like in Katoski Park. 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Chagnon Debate Essay - 1049 Words

Chagnon Debate In Patrick Tierney’s article â€Å"The Fierce Anthropologist,† he discussed the faults that are, or may be, present in Napoleon Chagnon’s anthropological research of the Yanamamo, or â€Å"The Fierce People,† as Chagnon has referred to them in his best-selling book on the people. Due to Chagnon’s unparalleled body of work in terms of quantity and, as many argue, quality, Marvin Harris draws heavily on his research to support his point, which is that the origin of war is ecological and reproductive pressure. One should question Harris’s theories (and all theories), especially in the light of the aforementioned article, but I do not believe his arguments are, or should be, adversely affected by the information presented in this†¦show more content†¦Factions solidify and tensions mount.† (Pg. 77). According to Harris, this almost always precedes Yanamamamo warfare. If Tierney’s accounts concerning warfare and the derivatives of warfare are correct, this makes Harris’s arguments incredible. On the other hand, Tierney’s viewpoint is arguable. As Irven Delfore, a professor of biological anthropology at Harvard, points out in, â€Å"The Fierce Anthropologist,† â€Å"Chag was both first and thorough†¦thorough in the sense that Chag has visited at least 75 Yanamami villages on both sides of the Venezuelan and Brazilian borders†¦Chag gathered very detailed and documented data on the villages – so much so that another investigator could study the same population and come to a different conclusion.†(Pg. 55). This seems to be exactly what Harris has done. In fact, Harris begins the chapter â€Å"Proteins and the Fierce People† by pointing out a different in opinion stating that â€Å"Chagnon – who knows them best – has denied that the high level of homicide within and between villages is caused by reproductive and ecological pressures.† (Pg. 67). Harris goes on to use others, as well as Chagnon’s own eviden ce to disprove his claim. Harris shows how fighting over women is correlated to reproductive pressure, and there is a shortage of meat in the area in which the Yanamamo reside – this is quite obviously a type of ecological pressure. Harris’s use of evidence outside of Chagnon’s own indicates that he has doneShow MoreRelatedLeslie Sponsels Approach to Investigation of the Amazon Basin1632 Words   |  6 Pageslike Napoleon Chagnon, Marvin Harris, or Lizot (in discussing the Yanomamo) seem like they are ignoring the obvious fact which Sponsel focuses on: adaptation. The search for a stable theory of anthropology is difficult when so much of human behavior is adaptation in response to instability or constant change in the surrounding environment. Sponsels approach is therefore less theoretical and more factual and scientific. Although Amazon Ecology and Adaptation discusses and cites Chagnon, Lizot, andRead MoreWhat People Would Be Like Without Western Influences Pulled Nepolean Chagnon1150 Words   |  5 PagesThe curiosity of what people would be like without western influences pulled Nepolean Chagnon in, leading him to the Yanomamo, a tribe in the Amazon who has only recently come in contact with some western culture because of church ministries. The ministries showed up only a few years before Chagnon, meaning that the majority of the Yanomamo have had very little influence from them. Chagnon’s goal was to record all aspects of the Yanomamo’s life, everything from their individual interactions to theRead MoreLooking At Cultural Relativism, By John Ross Essay2815 Words   |  12 Pageswe take a look at Napoleon Chagnon’s experience among the Yanoman tribe of Brazil, you see different examples of cul tural relativism. Take from instance when the people were looking over Chagnon. The men would blow their noses into their hand then proceed in looking over the stranger in their village. When Chagnon asked how to say â€Å"You hands are dirty†, the indians surprised him with a smile then proceeded to spit in their hand, their spit was mixed with tobacco. The simple fact that they were wiping

Themes, Motifs, and Symbols Mourning Becomes Electra Essay Sample free essay sample

Although O’Neill purportedly derived Mourning Becomes Electra from theOresteia. the myth that really structures the play’s action is overpowering that of Oedipus. Oedipus was the Theban male monarch who inadvertently killed his male parent and murdered his female parent. conveying ruin to the land. Famously Freud elaborated this myth into his Oedipus composite. the construction through which kids are conventionally introduced into the societal order and normative sexual dealingss. At the centre of this composite in what Freud defined as its positive signifier is the child’s incestuous desire for the parent of the opposite sex. a desire perchance surmounted in the class of the child’s development or else capable to repression. Its development is starkly differentiated for male childs and misss. Both begin with a primary love object. the female parent. The male child kid merely moves from the female parent upon the menace of emasculation posed by his challenger. the male parent. In other words. the male child fears that the male parent would cut his phallus off if he continues to cleaving to the female parent who truly belongs to her hubby. By forbiding incest and establishing the proper dealingss of desire within the family. the Father becomes a figure of the jurisprudence. In overcoming his Oedipal desires. the male child would so abandon his female parent as a love object and place himself with his male parent. In contrast. the miss abandons the female parent upon recognizing both the mother’s emasculation and her ain. To her discouragement. neither she nor her female parent have a phallus. She so turns to the male parent in hopes of bearing a kid by him that would replace for her missing phallus ; the miss would go a female parent in her mother’s topographic point. Therefore. whereas emasculation ends the Oedipus composite for the male child. it begins it for the miss. The Oedipal play in its many substitutions determines the class of the trilogy. Lavinia. for illustration. yearns to replace Christine as married woman to her male parent and female parent to her brother. Christine clings to Orin as that the â€Å"flesh and blood. † wholly her ain. that would do good on her emasculation. Brant. in bend. is but a replacement for her cherished boy. Orin yearns to re- set up his incestuous bond with his female parent. But the war. where he would eventually presume the Mannon name. forces him from their pre-Oedipal embracing in the first topographic point. Though titled after Electra. the prevailing brace of lovers in Mourning is the Mother-Son. Put bluffly. the male Mannons in some manner or another take their female love objects as Mother substitutes. and the adult females pose them as their boies. The Fathers of the drama. Ezra and otherwise. figure as the challenger who would interrupt this bond of love. As we will see. what is chiefly being mourned here is the loss of this love relation. this â€Å"lost island† where Mother and Son can be together. Fate. Repetition. and Substitution As Travis Bogard notes. O’Neill wrote Mourning to convert modern audiences of the continuity of Fate. Consequently. throughout the trilogy. the participants will note upon a unusual bureau driving them into their illicit love personal businesss. slayings. and treacheries. What O’Neill footings destiny is the repeat of a mythic construction of desire across the coevalss. the Oedipal play. As Orin will note to Lavinia in â€Å"The Haunted. † the Mannons have no pick but to presume the functions of Mother-Son that organize their household history. The participants continually become replacements for these two figures. a permutation made most expressed in Lavinia and Orin’s reincarnation as Christine and Ezra. In this peculiar instance. Lavinia traces the classical Oedipal flight. in which the girl. horrified by her emasculation. yearns to go the female parent and bear a kid by her male parent that would deliver her deficiency. Orin at one time figures as this kid every bit good as the hubby she would go forth to be with her boy. The Double/the Rival The assorted permutations among the participants as structured by the Oedipal play make the participants each other’s doubles. The two-base hit is besides the challenger. the participant who believes himself dispossessed convinced that his dual bases in his proper topographic point. Therefore. for illustration. Lavinia considers Christine the married woman and female parent she should be. To take another illustration. Mourning’s male participants universally vie for the desire of Mother. The Civil War. by and large remembered as a war between brothers. comes to typify this battle. The men’s competitions are murderously childish. runing harmonizing to a covetous logic of â€Å"either you go or I go. † Because in these competitions the other appears as that which stands in the self’s rightful topographic point within the Oedipal trigon. the challengers appear as doubles of each other every bit good. Orin’s incubus of his slayings in the fog allegorizes this battle. Orin repeatedly killing the same adult male. himself. and his male parent. This compulsive series of slayings demonstrates the impossibleness of the lover of all time submiting to his â€Å"rightful place† within the Oedipal triangle—Mother will ever desire another. bring forthing yet another challenger. The Law of the Father In the Oedipal myth. what tears the boy off from his incestuous embracing with the female parent is the infliction of the father’s jurisprudence. Mourning’s chief male parent. Ezra. serves as figure for this paternal jurisprudence. though more in his symbolic signifier than in his ain individual. Ezra’s symbolic signifier includes his name. the portrayal in which he wears his judge’s robes. and his ventriloquist voice. Indeed. his symbolic signifier about usurps his individual. Note how Ezra. in fearing that he has become asleep to himself. Muses that he has become the statue of a great adult male. a memorial in the town square. Ezra’s decease makes the importance of his symbolic map even more evident. With the decease of his individual. he exercises the jurisprudence with all the more force. stalking the life in his assorted symbolic signifiers. Therefore. for illustration. Christine will flinch before his portrayal. Lavinia will raise his voice and name to command Orin to attending. Motifs The Blessed Islands The phantasy of the Blessed Island recurs among the major participants as the lost Mother-Son couple disrupted by the Oedipal play. It. instead than any of their deceases. is the trilogy’s chief object of bereavement. Orin offers the most extended vision of the Blessed Island to Christine in Act II of â€Å"The Hunted. † A sanctuary from the war. the Island is a warm. peaceable. and unafraid Eden composed of the mother’s organic structure. Therefore Orin can conceive of himself with Christine without her being at that place. In footings of the trilogy’s sexual play. the Blessed Island is the kingdom of the pre-Oedipal. the clip of plenty and integrity shared by female parent and kid. However. Orin goes to war to make his responsibility as a Mannon. The Natives The Blessed Islands are besides populated. in the players’ imaginativenesss. by indigens. which entwine their phantasies of sex with those of race. By and large the native appears through two divergent images: the sexual inexperienced person and the sexually depraved. Thus. for illustration. Lavinia will remember the islands as the place of dateless kids. dancing naked on the beach and loving without wickedness. This island is the perfect place for a prelapsarian love matter. For Orin. nevertheless. the indigens display an about beastly sexual art. depriving his sister with their lewd regards. The native assumes these proportions when imagined as challengers. the art and pleasance they would apparently supply the lover going objects of enviousness. Symbols Though Mourning is prevailing with symbolism. the symbol that dominates the playing infinite is surely the Mannon house. The house is built in the manner of a Grecian temple. with white columned portico covering its grey walls. As Christine ailments in Act I of â€Å"Homecoming. † the house is the Mannons’ â€Å"whited sepulcher. † It functions non merely as crypt to the family’s dead but besides to its secrets. Its laminitis. Abe Mannon. designs it as a memorial of repression. constructing it to cover over the shame that sets this retaliation rhythm in gesture. What symbolizes this repression in bend is the house’s separating characteristic. the â€Å"incongruous white mask† of a portico concealing its ugliness. This mask doubles those of its occupants. arousing the â€Å"life-like masks† the Mannons wear as their faces.