first one looks like round worm of animals (Ascaroidea super family)
Second one is operculated egg- egg of fish tape worm(Diphyllobothrium latum ) or hermophrodite flukes like intestinal flukes (Fasiolopsis buski)
Dear Efrain,
I think the morphology and measures of the eggs represented in the first image are similar to that descride for Dioctophyma, a nematode genus already reported in Lontra longicaudis in South America. The second egg is more similiar to a trematode species.
I think first one were round worm (Ascariidae) it looked from the thick wall and the measured 40x70, from the undiferentiated embryo it must be unfertilized
second one, I think it's Cestoda based on the measured it could be Spirometra spp because its has one operculum (Diphyllobothrium has two operculum) , that parasite common found in fish or animal who eating the fish such as bear,
The first one: Ascaris sp embryyonated eggs. probably Ascaris suum from pig or ascaris lumbricoides from man (unembryonated in fresh stools)
The second one, egg of fasciola hepatica (approx 120-140 µM long, too long for Diphylobothrium egg
friendly
christian
I think the first one is a Ascariidae egg and the second is like a trematode egg.
Best regard
The first is an ascarid egg and the second a trematode egg.
I think the fist one is Dioctophyma renale, second is like Alaria alata.
The first egg does look like an ascarid egg. Dioctophyma renale eggs are found in the urine, so if this sample was collected in a way that avoided urine contamination, D. renale eggs would be unlikely. Also, in my limited experience, D. renale eggs are a bit more pointed at the ends, unlike this oval egg. The second egg may be a trematode or pseudophyllidian tapeworm egg. You could concentrate the eggs out of the feces and place them in a thin layer of distilled water (so they are exposed to oxygen) and incubate them for a while and see what type of larvae develops inside (ciliated = trematode; 6 hooks = tapeworm). Also, keep in mind that the otter is eating organisms that will have their own parasites, so if you are only finding one or two eggs of a particular type, they may be from a food item and are not actually parasitizing the otter.
Tenho a impressão de que se trata de um ovo da ordem Ascaridea. Os ovos de Dioctophyme são observados em urina e tem plugues nas extremidades e casca mais espessa. O segundo ovo pode ser de trematodeo.
The egg is ascarid egg in infective stage (As it has the L2 larva inside it). It is not Dioctophyma renale egg (D renale egg is barrel shaped and pitted except at the poles. The images am attaching may be of help. 1st one is ascarid egg; 2nd one is D. renale egg
In my humble opinion, the first egg belongs to a spirurid.
Though it can be a case of pseudoparasitization as pointed out by Dr Nolan.
Probably ,the first one looks like Ascarid egg (Ascaroidea super family) ;
Second one which is operculated looks like fish tape worm egg (Diphyllobothrium latum ).Thanks
- Badges
- Science topic
- Similar topics
- Biological Science
- Zoology
- Ornithology