Wyniki wyszukiwania

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Larval Hysterothylacium sp. [Nematoda, Anisakidae] and trematode metacercariae from the amphipod Paracorophium excavatum [Corophiidae] in New Zealand

100%

Luque J. L., Bannock L. M., Lagrue C., Poulin R.

Acta Parasitologica

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2007

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tom 52

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nr 2

Previously undescribed fourth-stage larvae of anisakid nematodes were found in the haemocoel of the amphipod Paracorophium excavatum (Thomson, 1884) (Corophiidae) in New Zealand. Morphological examination by light microscopy showed that the worms belonged to a species of Hysterothylacium Ward et Magath, 1917, based on several characters including the presence of interlabia, the location of the excretory pore posterior to the nerve ring, and the characteristics of the intestinal caecum and ventricular appendix. Interestingly, several male specimens showed precocious sexual development. This is the first record of fourth larval stage and precocious adult male specimens of Hysterothylacium in an invertebrate host, as well as the first record of anisakid larvae in New Zealand crustaceans. In addition, metacercariae of two trematode species, Coitocaecum parvum and Microphallus sp., are recorded for the first time from the amphipod P. excavatum.

2

A new species of genus Hysterothylacium Ward et Magath, 1917 [Nematoda, Anisakidae] from Liparis tanakae [Scorpaeniformes, Liparidae] from the Yellow Sea, China

100%

Li L., Xu Z., Zhang L.

Acta Parasitologica

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2007

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tom 52

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nr 4

A new anisakid nematode, Hysterothylacium liparis sp. nov., is described from the intestine and stomach of the fish, Liparis tanakae (Gilbert et Burke, 1912) (Scorpaeniformes, Liparidae), a fish endemic to the Yellow Sea, China. The new species can be distinguished from the congeners by the absence of lateral alae, the length of the intestinal caecum (1.94–3.35 mm, 58.84–82.47% of oesophageal length), the number and arrangement of the caudal papillae (20–29 precloacal subventral pairs, 1 adcloacal pair and 4 postcloacal pairs), the size of the spicules (1.94–3.74 mm, 4.85–7.30% of body length) and the morphology of the tail tip. This is the first species of adult ascaridoid nematodes to be reported from fishes of the family Liparidae in northern China.

3

A new species of Hysterothylacium (Ascaridoidea, Anisakidae) parasitic in Zenopsis conchifer (Zeiformes, Zeidae) from Argentinean waters

88%

Rossin M. A., Datri L. L., Incorvaia I. S., Timi J. T.

Acta Parasitologica

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2011

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tom 56

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nr 3

A new species of parasitic nematode, Hysterothylacium spirale sp. nov. (Ascaridoidea, Anisakidae), is described based on specimens collected from the intestine and pyloric caeca of the silvery john dory Zenopsis conchifer (Lowe) (Zeiformes, Zeidae), from the Argentinean Shelf (35°05′–40°46′S, 53°03′–58°07′W). Among the 66 valid species described so far in the genus, the new species most closely resembles H. zenis (Baylis, 1929). Both species, apparently specific for fishes of the family Zeidae, share the shape of the dorsal lip, the long expanded lateral alae originating from subventral interlabia and the ornamentation of the tail tip, as well as general morphometry. The combination of these shared features distinguishes both species from all congeners so far known. However, the new species is distinguishable from H. zenis by having shorter interlabia, and consequently the lateral alae originating more posteriorly, shorter spicules, a smaller number of postcloacal papillae and the presence of two pairs of double postcloacal papillae.

Ograniczanie wyników

3 Acta Parasitologica

1 Bannock L. M.

1 Datri L. L.

1 Incorvaia I. S.

1 Lagrue C.

1 Li L.

1 Luque J. L.

1 Poulin R.

1 Rossin M. A.

1 Timi J. T.

1 Xu Z.

1 Zhang L.

1 2011

2 2007

Larval Hysterothylacium sp. [Nematoda, Anisakidae] and trematode metacercariae from the amphipod Paracorophium excavatum [Corophiidae] in New Zealand

A new species of genus Hysterothylacium Ward et Magath, 1917 [Nematoda, Anisakidae] from Liparis tanakae [Scorpaeniformes, Liparidae] from the Yellow Sea, China

A new species of Hysterothylacium (Ascaridoidea, Anisakidae) parasitic in Zenopsis conchifer (Zeiformes, Zeidae) from Argentinean waters