Amin O M, Bauer O N, Sidorov E G
Department of Biological Sciences, University of Wisconsin-Parkside, Kenosha 53141-2000.
J Parasitol. 1991 Feb;77(1):26-31.
Paralongicollum nemacheili n. gen., n. sp. is described from Salmo gairdneri Richardson and Nemacheilus stoliczkai Steindacher in Lake Kul'say in the basin of Lake Balkhash, Kazakh S.S.R. Its long uniformly cylindrical neck and nonfiliform proboscis distinguish it from the other 3 genera of the family. Tenuiproboscis Yamaguti, 1935, has a filiform proboscis. The neck of Pomphorhynchus Monticelli, 1905, has a bulb anteriorly, and that of Longicollum Yamaguti, 1935, is spirally twisted with expansions. A key to the genera of Pomphorhynchidae is provided. The relatively longer necks in juveniles than in larger worms probably enhance the establishment of new infections. A large proportion of worms had extensive body wall deformities. Longicollum sergenti (Choquette and Gayot, 1952) Golvan, 1969, is relegated to the new genus Paralongicollum.
长颈线虫属新属及新种（Paralongicollum nemacheili n. gen., n. sp.）是在哈萨克苏维埃社会主义共和国巴尔喀什湖流域库尔赛湖的虹鳟（Salmo gairdneri Richardson）和斯氏条鳅（Nemacheilus stoliczkai Steindacher）体内发现并描述的。其颈部细长且呈均匀圆柱形，吻部非丝状，这使其有别于该科的其他3个属。山口1935年描述的细吻线虫属（Tenuiproboscis）有丝状吻部。1905年蒙蒂塞利描述的膨吻线虫属（Pomphorhynchus）颈部前端有一个球状物，而1935年山口描述的长吻线虫属（Longicollum）颈部呈螺旋状扭曲且有膨大部分。文中提供了膨吻科各属的检索表。幼虫的颈部相对比成虫的颈部更长，这可能有助于新感染的建立。很大一部分虫体有广泛的体壁畸形。1969年戈尔万将塞氏长吻线虫（Longicollum sergenti (Choquette and Gayot, 1952)）归入新属长领线虫属（Paralongicollum）。
