Phyllobothrium squali Yamaguti, 1952 (Tetraphyllidea, Phyllobothriidae): redescription and first record in the Black Sea
Phyllobothrium squali Yamaguti, 1952 (Tetraphyllidea, Phyllobothriidae): redescription and first record in the Black Sea
复制标题
Phyllobothrium squali Yamaguti，1952（Tetraphyllidea，Phyllobothriidae）：黑海的重新描述和首次记录
DOI：
10.1023/a:1019981504305
复制
发表时间：
2002
影响因子：
1.3
通讯作者：
B. Georgiev
中科院分区：
文献类型：
--
作者：
G. Vasileva;G. Dimitrov;B. Georgiev
根据来自日本水域的 Squalus acanthias 的正模标本和来自保加利亚黑海沿岸同一寄主的标本（新地理记录），重新描述和说明了 Phyllobothium squali Yamaguti，1952 年。该物种的特征是：头节直径为 2.9-4.3 毫米，腺顶器官，具有折叠和后裂边缘的叶状囊，直径为 286-367 微米的副吸盘，每个节片有 222-373 睾丸，长度为 354-655 微米的椭圆形卷囊，阴道口 卷囊的前面，以及具有圆形肌肉组织的阴道末端。地中海那不勒斯附近的 Etmopterus spinax 标本被 Euzet (1959) 记录为 Crossobothrium squali，已被重新描述，但其鉴定尚未得到证实。 P. squali 被认为是 S. acanthias 的一种特定寄生虫；目前仅在日本水域、黑海和爱尔兰海发现这种物质。如 Ruhnke (1996a) 所给出的，建议对Phyllobothrium 的一般诊断进行更改，以便包括 P. squali 的特征。
Phyllobothrium squali Yamaguti, 1952 is redescribed and illustrated on the basis of the holotype from Squalus acanthias from Japanese waters and specimens from the same host off the Bulgarian Black Sea coast (new geographical record). The species is characterised by: a scolex diameter of 2.9-4.3 mm, a glandular apical organ, foliose bothridia with folded and posteriorly bifid margins, accessory suckers of 286-367 μm in diameter, 222-373 testes per proglottis, an oval cirrus-sac with a length of 354-655 μm, the vagina opening anteriorly to the cirrus-sac, and the terminal part of vagina with a circular musculature. Specimens from Etmopterus spinax off Naples, Mediterranean Sea, recorded by Euzet (1959) as Crossobothrium squali, are redescribed and their identification not confirmed. P. squali is recognised as a specific parasite of S. acanthias; it is presently known only from Japanese waters, the Black Sea and the Irish Sea. Changes to the generic diagnosis of Phyllobothrium, as given by Ruhnke (1996a), are proposed in order to include the characters of P. squali.