Moravec Frantisek, de Buron Isaure, Roumillat William A
Institute of Parasitology, Academy of Sciences of the Czech Republic, Branisovská 31, 370 05 Ceské Budĕjovice, Czech Republic.
Folia Parasitol (Praha). 2006 Mar;53(1):63-70. doi: 10.14411/fp.2006.006.
Two new nematode species of Philometra Costa, 1845, P. carolinensis sp. n. and P. cynoscionis sp. n., are described from the spotted seatrout, Cynoscion nebulosus (Cuvier) (Sciaenidae, Perciformes) in estuaries on the Atlantic coast of South Carolina, USA. Philometra carolinensis (males and gravid and subgravid females) parasitic in the host's ovary is most similar to P. lateolabracis (Yamaguti, 1935) in female morphology, but distinctly differs from it in possessing conspicuously short spicules (81-87 microm long) with heavily sclerotized distal parts, the gubernaculum bearing a reflected dorsal barb, and in the length ratio of the gubernaculum and spicules (1:1.23-1.42) in the male. Philometra cynoscionis (only gravid females) found subcutaneously in the host's tissue (lateral to the ascending process of the premaxilla and also posteromedial to the length of each maxilla) is characterized mainly by the presence of cephalic papillae arranged in two circles (8 large papillae in outer circle and 6 small papillae in inner circle), the absence of caudal projections, the body size (length of gravid female 20-33 mm) and the location in the host.
描述了采自美国南卡罗来纳州大西洋沿岸河口的斑点海鳟（Cynoscion nebulosus (Cuvier)，鲈形目，石首鱼科）体内的两种新的嗜子宫线虫（Philometra Costa，1845），即卡罗来纳嗜子宫线虫（Philometra carolinensis sp. n.）和犬牙嗜子宫线虫（Philometra cynoscionis sp. n.）。寄生于宿主卵巢内的卡罗来纳嗜子宫线虫（雄虫以及妊娠和近妊娠雌虫）在雌虫形态上与日本嗜子宫线虫（Philometra lateolabracis (Yamaguti, 1935)）最为相似，但明显不同之处在于，其具有明显短的交合刺（长81 - 87微米），交合刺远端高度硬化， gubernaculum具一个向后的背侧倒刺，并且在雄虫中gubernaculum与交合刺的长度比为1:1.23 - 1.42。皮下发现于宿主组织（上颌骨上升突外侧以及每块上颌骨长度的后内侧）内的犬牙嗜子宫线虫（仅妊娠雌虫）的主要特征为，头部乳突排列成两个圆圈（外圈8个大乳突，内圈6个小乳突），无尾突，虫体大小（妊娠雌虫长20 - 33毫米）以及在宿主体内的位置。
