1 / 10

Case 5 California Sea Lion

Charmane Thurmand Shauna Decker Aaron Clark Sarah Glazier. Case 5 California Sea Lion. Phylogenetic/Taxonomic Placement: Order: Carnivora Family: Otariidae Genus: Zalophus Species: Z. californianus Range: Found from Mexico north through California to British Columbia.

mateo
Télécharger la présentation

Case 5 California Sea Lion

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CharmaneThurmand Shauna Decker Aaron Clark Sarah Glazier Case 5California Sea Lion

  2. Phylogenetic/Taxonomic Placement: Order: Carnivora Family: Otariidae Genus: Zalophus Species: Z. californianus • Range: • Found from Mexico north through California to British Columbia. • Live along the coast and up to ten miles out to sea Info about Sea Lions

  3. Interesting facts • Average lifespan 17 yrs (in wild) • Seal nose shut to stay under water up to 15 min • Travel at average speed of 10.8 km/hr = 6.7 mph • Swim at speeds of 2.7 m/s or 8.8 ft/s • Diet includes variety of seafood, mainly squid and fish. Will cooperate with sharks, dolphins and seabirds when hunting large schools of fish • Intelligent, trained easily More info

  4. A young stranded California Sea Lion admitted to a rehabilitation center in June. • Emaciated • Diarrhea • High white blood cell count (Neutrophilia) • Elevated levels of protein and albumin • Decrease in blood urea nitrogen concentration • Determined to be dehydrated and malnourished Case Background

  5. Two Weeks Later • Anorexic • Blood/mucus around oral cavity • Corneal opacity in right eye (transparent structure on front of eyeball. Occurs when cornea becomes scarred) • Leukocytosis (raised white blood count with larger ratio of immature neutrophils to mature neutrophils) • Anemia (deficiency of hemoglobin in red blood cells) • Thrombocytopenia (relatively few blood platelets in blood) • Died two weeks after admission, and necropsy performed Case cont.

  6. Hemorrhaging in lung lobes • Swollen and damaged arteries • Interstitial Pneumonia with scarring • Lungs contaminated with Escherichia coli • Pus present • Clotting in pulmonary blood vessels • Enlarged/hemorrhaged lymph node • Blood-tinged mucus in trachea and bronchi • 150 nematodes collected from the pulmonary arteries • Two nematodes found in right ventricle of the heart • Nasopharyngeal acariasis (mites in nose and throat) • No parasitic cysts or Helminth eggs/larvae found in fecal samples Post Mortem

  7. Nematodes were present within the lungs along with the greatest amount of bodily harm. • Possible Nematode Infections affecting the lungs • Lungworm (Nematoda: Metastrongyloidea) • Attachment blocks airways, induces mucus production, and can lead to secondary bacterial infections, • Lungworm (Parafilaroidesdecorus) • Hyperemia (excess blood), hemorrhaging, cellular infiltration, verminous pneumonia • “Lungworms are common in all pinnipeds [marine mammals). Sea lions have Parafilaroidesdecorus , while true seals are usually parasitized by Otostrongyluscircumlitus . The latter parasite is also found in the hearts of some phocids [seals, sea lions, etc]; however, it does not produce a microfilaremia. Both of these parasites use fish as intermediate hosts.” (Thanks Merck Veterinary Manual) Hypothesis • http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/170810.htm

  8. Otostrongylus circumlitus • Although typically affecting true seals, the symptoms for this particular nematode fit with the information given in the case. • Mucus and blood around the oral cavity and within the trachea • Internal hemorrhaging (from attachment?) • Secondary E. coli infection in the lung What we think it is

  9. Metastrongyloid Nematode (Otostrongylus circumlitus) Actual Infection

  10. Question • What is the host of Otostrongylus circumlitus? • Answer • True seal’s Exam Question

More Related