Friday, August 22, 2014

Picture and Word of the Day 8/22/14

Picture of the Day 8/22/14
Bay of Fundy, New Brunswick, Canada
http://en.wikipedia.org/wiki/Bay_of_Fundy
Word of the Day 8/22/14

Word: Csillogás

Language: Hungarian

Meaning: Glitter 

Thursday, August 21, 2014

Picture and Word of the Day 8/21/14

Picture of the Day 8/21/14
File:Porec riva.jpg
Porec Riva, Croatia
http://commons.wikimedia.org/wiki/File:Porec_riva.jpg
Word of the Day 8/21/14

Word: Non movimentato

Language: Italian 

Meaning: Uneventful 

Wednesday, August 20, 2014

My Foray into Shrimp Dissection

       Hello everyone. I am taking an online Marine Science course, and one of our labs was to dissect a shrimp. I thought I would share my experience with you and the information I gleaned from this watery activity! I have never cut open a shrimp before; to be honest, it wasn’t gruesome or bloody (rather, the body was grey and mushy). I also compared my findings with shrimp to characteristics of lobster and crabs.
       My shrimp was gray with black speckles on the middle portion of the body. The tail and head were slightly translucent with pink undertones. I also cut open the tough, grayish carapace (hard outer surface on the head) and the inside organs were brown and gooey. Shrimp would probably lurk on the sea floor (benthic organisms), under sand, in between rocks, or in the open water. Their gray hue would blend in with the color of the ocean (the bottom layer of water is dark and murky). The black speckles also resemble sand and other ocean particles. As for the external appendages, I counted 22 in all (each separate walking leg and swimmeret as well as the two pink antennae). In short, there were ten pairs of legs and two feelers. The swimmerets and walking legs were clear and jelly-like—the texture was like the little sacks of juice in oranges or lemons. For swimming, shrimp use pleopods to propel themselves forward. The tail (composed of uropods and telson) is used for direction and speed.
                               
       Next, for feeding, shrimp have maxillipeds (which tear food apart) and a mandible (jaw) for chewing/crushing. Their leg hairs also filter food from the surrounding ocean waters. At the end of each of the shrimp (I acquired four from a local bait shop) were two long, delicate feelers or antennae that were pale pink. The antennae are used for taste/touch purposes (sensory organs). They are sensitive and detect predators and other objects in the environment. There were also small hairs/bristles on the end of the walking legs; they were short, prickly, and white. These small hairs filter food, detect current changes and predators, groom the shrimp, keep female eggs incubated (protected or warm), and act as sensory organs as well (like the antennae).

       I also compared the characteristics of my shrimp to those of lobsters and crabs. I found many similarities between the three (i.e. they are all invertebrates!) All three crustaceans have antennae that are used for sensory purposes (to detect objects in the surrounding environment). All three have specific “walking legs” and appendages used strictly for swimming. For example, shrimp, lobsters, and crabs have “swimmerets.” They also have a carapace, the section of the crustacean that protects the softer internal organs. Lobsters  have tiny hairs on their legs that are used for touch and taste as well. To get rid of impurities on the body, the antennae on the lobster and shrimp are used for grooming. Finally, all three have eyestalks, although their eyesight is altogether poor. 

       Although the shrimp is the smallest out of the three, I thought it was most similar to the lobster. First, their body shapes are similar (linear versus circular like a crab). Both have antennae, prominent leg appendages (for walking and swimming), and hairs used for grooming and incubation. They also have tails that propel them through the water, molting capabilities, and beady eyes. Although shrimp do not have claws for catching food, both shrimp and lobsters have mandibles in their mouths for crushing/chewing. Despite the similarities, I did witness differences between the three aquatic organisms. Shrimp are very small (at least mine was!), and are more translucent in color than bright red lobsters or pale pink crabs. They do not have sharp claws and tend be more compact along a central line. They have a small abdomen (composed of the tergum and pleuron), compared to the larger mid-sections of lobsters and crabs (which are circular). Crabs do not have a tail, and lobsters’ tails are more spread out/fan-like than shrimp.

        So why are shrimp such amazing and adaptive creatures? Here is a list of some of the reasons why I think shrimp are so resilient. First, the antennae help the shrimp navigate through their surroundings and detect prey. Second, the swimmerets allow shrimp to propel themselves forward fast, avoiding prey. Also, to successfully reproduce, female shrimp can incubate their eggs in their leg hairs. Shrimp are translucent or gray, allowing them to blend into their murky/sandy habitats (avoiding detection by predators). Next, the hard carapace protects vital shrimp organs; if they were to hit a rock or another organism, their upper half would be safe. Finally, shrimp are still able to survive even if their antennae are ripped off.

Sources:
http://wdfw.wa.gov/fishing/shellfish/shrimp/identification.html
http://www.aquaticcommunity.com/inv/shrimpanatomy.php

Monday, August 18, 2014

Laocoӧn, El Greco, 1614

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       This oil on canvas in the National Gallery of Art (Washington, D.C.) was painted by El Greco in the beginning of the 17th century. El Greco (1541-1614) was born in Crete, a small Greek island near the Cycladic islands in the Aegean Sea. The Minoan culture flourished there during the Bronze Age, and palaces such as Knosses were labyrinthine, centered around an open court, and built out of wood to withstand the numerous earthquakes. Already coming from a solid artistic past, El Greco was trained as an icon painter (icons are holy images of Mary or Jesus) in the early years of his life. Like so many other great “masters” who were not native to Italy, El Greco (literally “The Greek”) made a pilgrimage to that country in 1567 to observe the new prolific art styles. A few decades earlier, Michelangelo had been painting the ceiling of the Sistine Chapel and Raphael was being an artistic boss in the Vatican Signature Room. Because his real name (Doménikos Theotokópoulos) was too difficult to pronounce, the name of “El Greco” caught on quickly. El Greco trained under Venetian artists during the second stage of his career. He was undoubtedly influenced by the ghostly lighting of Tintoretto and the masterful treatment of color and modeling that is synonymous of Titian. He moved to Rome in 1570 but finally settled in Spain in 1577. Spain was also undergoing its “Golden Age,” although the Baroque age characteristic of the middle 1600s was still developing (i.e. see my video on Velázquez’s early paintings here.) El Greco spent the rest of his illustrious career in Toledo, an ancient town famous for harboring three different yet coexisting religious (Christianity, Judaism, and Islam). It was in this rustic Spanish town that El Greco painted this image in the last years of his life. 
Laocoon and Sons, Vatican
       Laocoon is a striking painting, and it is the archetype for the advanced style developed by El Greco throughout his career. The story of Laocoon comes from Virgil’s Aeneid, and it describes that of a Trojan priest who was murdered (as well as his sons). Laocoon warned the Trojans against accepting the fabled “Horse,” but the Trojans disregarded his crazed remarks after Poseidon sent snakes from the sea to strangle him (Poseidon was on the side of the Greeks). This image depicts the most poignant moment in the horrific yet fascinating tale. The snakes have risen up, the distorted and muscular body of Laocoon is powerless on the ground (with a grinning snake about to bite his face), and one of the sons is gracefully wrestling with another menacing reptile. Let’s discuss the figures first: the twisting, overly muscular, and ghostly bodies are characteristic of El Greco and Mannerism, a sophisticated art style that emerged just after the High Renaissance. After the virtuosity of Michelangelo and the beauty produced by Titian, where else were European artists supposed to turn? The next generation cashed in on Mannerism, a style that featured bright colors, no sense of a solid ground, awkward poses, elongated bodies, and radical perspective. El Greco was the pioneer of this movement, and his stormy blue/gray skies, forlorn expressions on his figures, and impossible body shapes make this priceless work unforgettable. El Greco borrowed the chaotic bodies from a Hellenistic sculpture ("Laocoon and Sons") created by Athenodoros of Rhodes, Polydorus of Rhodes, Agesander of Rhodes. The sculpture is currently in the Vatican museum in Rome. The expression on El Greco’s Laocoon is incredible; he is looking up in grim acceptance of his fate, and almost seems to adopt a Christ-like expression (although this is a pagan myth). As compliments to the dark lighting, the bodies are ashen and bruised looking (El Greco used dark blue as muscular shading.) 
      
View of Toledo
        The ethereal scene is brought down to Earth by the town in the background. Although the city would have been Troy according to the Greek legend, the city depicted by El Greco is Toledo, his beloved home. The notorious Trojan Horse is shown as a haunting shadow as well as ancient bridges that are actually present in Toledo (i.e. Puente San Martin). Most of El Greco’s paintings feature Toledo as a background, but the figures in the foreground are the center of attention (as opposed to View of Toledo). As for the composition, there is a lack of perfectly straight lines; the bodies and even the city are undulating and curvy. This turbulent composition only serves to heighten the emotional overtones in the image; these men are dying a brutal death. This work is stunning and monumental, especially as it was one of the only non-religious works that El Greco ever completed.
El Greco clouds