Data on the life cycle of parasitic benthimermithid nematodes with the description of a new species discovered in marine aquaria

作者：Tchesunov Alexei V^*; Rozenberg Andrei A

来源：Russian Journal of Nematology, 2011, 19(2): 139-150.

• Benthimermithidae
• parasitic nematodes
• taxonomy
• Trophomera

A species of the mostly deep-sea parasitising nematode family Benthimermithidae has been for the first time discovered alive in marine aquaria of St. Petersburg City, Russia. Parasitising juveniles, young females and a young adult male were found in small crustaceans: Ostracoda, Isopoda, Tanaidacea and Amphipoda. The nematode is described as Trophomera granovitchi sp. n. which is characterised by relatively large and distinctly edged amphideal fovea and is distinguished from related T. laubieri, T. filiformis, T. petterae, T. pacifica, T aptera and T. leptosoma predominantly by the size of body and organs. The male of T. granovitchi sp. n., while differing from females in smaller body size, has the same type of amphideal fovea. Parasitising juveniles of T. granovitchi sp. n. differ from adults in having a normal pharynx with a small anterior stylet-like structure, normal midgut, tail with a vestigial terminal spinneret, and by the absence of obvious sensilla. Levels of infection of various host crustaceans by nematodes vary considerably. Adult specimens emerging from various hosts differ in body size.

• 出版日期2011