At the Marine Mammal Center in Sausalito, parasitologist Murray Dailey is trying to isolate the types and life cycles of acanthocephalan worms that infest otters.
12.
Sarcocystis neurona killed 7 percent, and a seabird-borne intestinal parasite called Acanthocephalan peritonitis, or thorny-headed worm, killed 16 percent.
13.
Some of the acanthocephalans ( perforating acanthocephalans ) can insert their proboscis in the intestine of the host and open the way to the abdominal cavity.
14.
Some of the acanthocephalans ( perforating acanthocephalans ) can insert their proboscis in the intestine of the host and open the way to the abdominal cavity.
15.
They are susceptible to parasites, both external ones like barnacles and remoras, and internal ones, like nematodes, trematodes, cestodes and acanthocephalans.
16.
Along with " Macrocanthorhynchus hirudinaceous ", " M . moniliformis " is an acanthocephalan worm species that can infect humans, though rare.
17.
Acanthocephalans are sexually dimorphic ( dioecious )-adult males are generally 4 to 5 cm long while females are longer, ranging from lengths of 10 to 30 cm.
18.
To accommodate this finding, some authors extend the term'Rotifera'to include the highly modified, parasitic'acanthocephalan rotifers'alongside bdelloid, monogonont and seisonid rotifers.
19.
This would mean that the closest living relatives of bdelloid rotifers are not monogonont rotifers, as previously believed, but seisonid rotifers and acanthocephalans, despite their highly modified morphology.
20.
Parasites of " Barbus barbus " include " Aspidogaster limacoides ", a trematode flatworm; and " Pomphorhynchus laevis ", an acanthocephalan worm.
