Humboldt Squid

Humboldt calamary Dosidicus gigas Domain Eukarya Kingdom Animalia Phylum phylum Mollusca Class Cephalopoda Order Teuthida Suborder Oegopsina Family Ommastephidae Genus Dosidicus Species Dosidicus gigas Ecological Geographic range Receives its sh out(a) out from its main repair the Humboldt Current This current is found in the eastmost Pacific Ocean region The Humboldt calamarys are sometimes found along the coastal region of California, Oregon, Alaska and Washington Gener exclusivelyy, found about 2,300 feet below surfaceEnter alter waters to lay eggs Trophic train Sharks, dolphins, whales, tuna swordfish, many anformer(a)(prenominal) types of rays as well as an abundance of crustaceans, mollusks, fish of all sizes, and other cephalopods such as octopus preempt be found in the food web of the Humboldt The Humboldt is occupies a relatively high trophic level It feeds on krill and small species of fish P sanguineatorsSperm whales, sharks, seals, swordfish, and marlin feed o n Humboldt squids of all sizes, while gulls and large fish often capture juveniles Parasites include Chromidina elegans, a ciliate protozoan that lives inside the renal organs of the Humboldt Life bike Average life span is 1 year however, some can live up to 2 years Spend much of their defraud life in the oceans oxygen-minimum zone Come up at night to feed after(prenominal) 200 days, the squids reach cozy maturity They die shortly after mating Physiological ontogenesis Bilateral symmetryArms and tentacles 8 arms and 2 retractable tentacles Mantle travail structure and so internal organs are all open directly to the ocean water Funnel water is pumped from out of the mantle to the funnel, which allows squids to move Fins are used for both maintaining position and generating carrier bag Chromatophores tiny elastic sacs of pigment. The Humboldt squid can turn their entire bodies from red to white to red again in less than one hour Digestive outline Complete and ciliated Mo uth, anus and complex stomachUse of a fake like beak to break up food A radula or ribbon horn found on the tongue directs the food rout the esophagus Food is taken up by cells lining the digestive glands arising from the stomach and then passed into the blood Excretory System Undigested materials are compressed and packaged and discharged through the anus into the mantle cavity and carried forward by ocean currents Excretory functions are carried out by a pair of nephridia (tubular structures that collect fluids from the coelom and exchange salts) Respiratory systemContains ternary paddy wagon to support the constantly moving lifestyle of the squid Hemocyanin is the copper-rich respiratory protein that transports oxygen throughout the clay Circulatory system complex, closed circulative system (reason why they can move fast) contains 2 branchial hearts at the base of the gills which send unoxygenated blood through the gills A third ventricular heart then pumps oxygenated bloo d throughout the luggage compartment (blood turns blue when oxygenated, colorless before) Nervous system Highly developed and sensitiveBrain consists of two fused philia centers that are linked down the length of the body by two giant nerve axons The giant axons transmit nerve signals quickly Interesting fact the squids nervous system is connected to structures called statocysts. These vesicles let the animal to orient itself to a gravitational field, allowing the squid to remain aware of its orientation and movement in a third-dimensional manner Reproductive strategies Highest fecundity of any cephalopod Reach sexually maturity after 200 days of life Timing and location of eggs is still guesswork for most scientists Sexual reproductionSemelparous reproduction (reproduce at once in their lifetimes and die shortly after) Female Humboldt squids can have about 10 million eggs however, the most to have been found has been in the midst of half a million and a million eggs After the eggs are laid, there is no further parental investment funds Kurth, J. and M. Garzio 2009. Dosidicus gigas (On-line), Animal Diversity Web. Accessed March 18, 2013 at http//animaldiversity. ummz. umich. edu/accounts/Dosidicus_gigas/ Squid. The Columbia Encyclopedia, 6th ed.. 2012. Encyclopedia. com. 18 Mar. 2013. Humboldt or Jumbo Squid Fact Sheet National zoological garden FONZ. Smithsonian National Zoological Park. N. p. , n. d. Web. 18 Mar. 2013. Humboldt Squid. BioWeb. N. p. , n. d. Web. 18 Mar. 2013. A Humboldt Squid Dissection play for Educators. The Gilly Lab. N. p. , n. d. Web. 18 Mar. 2013. Humboldt Squids Systems. Shorecrest Preparatory School. N. p. , n. d. Web. 18 Mar. 2013. HumboldtSquid. Squid-World. N. p. , n. d. Web. 18 Mar. 2013. Squid Sex and Babies. Squid Sex and Babies. N. p. , n. d. Web. 18 Mar. 2013. http//theseasproject. weebly. com/uploads/5/3/8/4/5384258/5500235_orig. png? 243