Yakhchali M, Gorgani-Firuzjaei T, Baghri K
Department of Pathobiology, Parasitology Division, Faculty of Veterinary Medicine, Nazlu campus, Urmia University, Urmia, Iran.
Iran J Parasitol. 2013 Apr;8(2):256-63.
Slugs have been known worldwide as important pests of agricultural and horticultural production. They also play a role as intermediate or definitive hosts of helminths parasite. In this purpose, current study was carried out to examine slug radular teeth structure and slug infection with helminths larvae in north of Iran.
A total number of 114 slugs were collected from center and east parts of Mazandaran province from May 2011 to June 2012. The specimens were rinsed, measured, and identified. The radula of all collected slugs was extracted and stained by using Mallory II. For detecting the helminths parasite infection, foot- head and viscera of examined slugs were removed, minced, and digested with 4.5% acid pepsin.
Two species of Limax (Caspilimax) keyserlingi (Martens 1880) (11.4%, 13/114) and Parmacella ibera (Eichwald 1841) (88.6%, 101/114) were prevalent in the region. There was significant difference between body length and shell size. P. ibera had the highest number of teeth rows (145±5). The radular teeth formula was approximately similar in both identified slugs. In P. ibera, there was no significant difference in the average length and width of radula. The radular teeth in L. keyserlingi were larger and thicker than P. ibera. In all examined slugs for helminths larvae infection, P. ibera (7.69%, 1/13) was infected with Strongyloid larvae from Fereidonkenar area.
Two prevalent species of slugs exist in the same region of which P. ibera has capability to play a role as intermediate host of nematode helminths. Radular morphology within the slug species may be also systemically informative.
蛞蝓作为农业和园艺生产中的重要害虫，在全球范围内广为人知。它们还作为蠕虫寄生虫的中间宿主或终末宿主发挥作用。为此，开展了本研究以检查伊朗北部蛞蝓的齿舌结构以及蛞蝓被蠕虫幼虫感染的情况。
2011年5月至2012年6月，从马赞德兰省中部和东部共采集了114只蛞蝓。对标本进行冲洗、测量和鉴定。提取所有采集蛞蝓的齿舌并用马洛里II染色。为检测蠕虫寄生虫感染，将被检查蛞蝓的足部、头部和内脏去除、切碎，并用4.5%的酸性胃蛋白酶消化。
该地区常见两种蛞蝓，即凯氏蛞蝓（Caspilimax）keyserlingi（Martens，1880）（11.4%，13/114）和伊比利亚帕马蛞蝓（Parmacella ibera）（Eichwald，1841）（88.6%，101/114）。体长和壳大小之间存在显著差异。伊比利亚帕马蛞蝓的齿排数量最多（145±5）。两种已鉴定蛞蝓的齿舌齿式大致相似。在伊比利亚帕马蛞蝓中，齿舌的平均长度和宽度无显著差异。凯氏蛞蝓的齿舌齿比伊比利亚帕马蛞蝓的更大更厚。在所有检查蠕虫幼虫感染的蛞蝓中，伊比利亚帕马蛞蝓（7.69%，1/13）被来自费雷敦凯纳尔地区的类圆线虫幼虫感染。
同一地区存在两种常见蛞蝓，其中伊比利亚帕马蛞蝓有能力作为线虫蠕虫的中间宿主。蛞蝓物种内的齿舌形态在系统学上也可能具有信息价值。
