Chemical Nature and Mode of Stabilization of Egg‐shell in Helicometra pulchella (Rudolphi, 1819) (Digenea: Opecoelidae)

@article{Kalantan1992ChemicalNA,
  title={Chemical Nature and Mode of Stabilization of Egg‐shell in Helicometra pulchella (Rudolphi, 1819) (Digenea: Opecoelidae)},
  author={A. M. N. Kalantan and Misbahul Arfin and Mohamed S Alyousif},
  journal={Acta Zoologica},
  year={1992},
  volume={73},
  pages={153-156}
}
The chemical nature and mode of stabilization of egg-shell protein in digenetic trematode Helicometra pulchella (Rudolphi, 1819) have been investigated using histochemical techniques. It was found that the egg-shell is stabilized by quinone-tanning together with dityrosine. Other structural proteins (elastin, collagen and keratin-like proteins), glycogen and acid mucopolysaccharides were absent in egg-shell. Tyrosine was present in vitelline cells and immature egg-shell indicating that the… 
Histochemical Nature of Egg-shell of some Trematodes
The chemical nature and mode of stabilization of egg-shell of some Irema ^ es g' I^ different taxonomic groups and inhabiting various hosts and ha it ats ave een i 'g .
STUDIES ON HYSYTEROTHYLACIUM SP. (NEMATODA: ANISAKIDAE) INFECTING KUWAITI FISHES.
TLDR
Only one snapper fish and a small proportion of the silver pomfrets were found infected with the nematode, Hysterothylacium sp.
A review of the genus Helicometra Odhner, 1902 (Digenea: Opecoelidae: Plagioporinae) with a key to species including Helicometra overstreeti n. sp. from the cusk-eel Luciobrotula corethromycter Cohen, 1964 (Ophidiiformes: Ophidiidae) from the Gulf of Mexico
TLDR
This study describes a new species of Helicometra from the cusk-eel Luciobrotula corethromycter Cohen, 1964 collected from 1,280 m depth in the northwestern Gulf of Mexico, and it represents the first report of a parasite from the genus LuciOBrotula Smith and Radcliffe in Radcliffe, 1913.

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