Giant Oarfish Dissected! Worms, Eggs Found Inside

Posted by on October 29, 2013 in Sci-Tech, Science, Wildlife with 0 Comments
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Megan Gannon | LiveScience | Oct 30th 2013

oarfish+photo+2Researchers have dissected the two deep-sea oarfish that washed ashore in southern California this month. So far, they found that one was teeming with worms and the other was about to have babies.

On Oct. 13, an 18-foot-long (5.5 meters) oarfish was dragged to shore by a snorkeler at Catalina Island. Because the species lives in deep, dark waters, up to 3,000 feet (915 meters) below the surface, intact specimens are rarely discovered. Strangely enough, another smaller oarfish washed ashore north of San Diego just a few days later.


Parasitologists from the University of California, Santa Barbara jumped on the once-in-a-lifetime opportunity to study the elusive creature and asked for a small tissue sample of the oarfish that washed up at Catalina Island. When the researchers cut through a tiny portion of the fish’s intestine last week, they found it was carrying a heavy parasite load. [Photos of the Largest Fish on Earth]

“Our findings say that these are actually majorly parasitized fish,” Armand Kuris, a professor of zoology at UC Santa Barbara, said in a statement. “In this little piece of intestine that we had, we found quite a few of these rather large larval tapeworms. One of them was about 15 centimeters (6 inches) long.”

Kuris and colleagues say they also found other parasites that provide insight about the diet of the serpentlike fish. Embedded in the intestine was the hooked proboscis of an adult spiny-headed worm. Parasites hop from host to host throughout their life cycle, so the fact that this worm was mature suggests the oarfish ate its former host, likely krill or some deep-water crustacean, the researchers said.

[read full article here]

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