摘要
报道了采自福建省东山县海产鱼类肠道的２种复殖吸虫新种，即冠冕吸虫Ｓｔｅｐｈａｎｏｓｔｏｍｕｍｃａｒａｎｇｉｓｐ．ｎｏｖ．和鲈冠冕吸虫Ｓｔｅｐｈａｎｏｓｔｏｍｕｍｌａｔｅｏｌａｂｒａｃｉｓｓｐ．ｎｏｖ．。模式标本存放于汕头大学科学研究院海洋生物实验室。
In the examination of marine fishes of Dongshan Island, South Fujian,China,two new species of Acantholpidae were collected. These specimens are deposited in Marine Biology Laboratory,Science Center, Shantou University. All measurements are in millimetres,unless otherwise noted. 1 Stephanostomum carangi sp. nov (Fig. 1) Host: Caranx ( Caranx ) ignobilis ;Locality:Intestine;Location:Dongshan Island,Fujian Province;Date:Dec. 25,1996;Infection:2 specimens from 1 host. Description:Body 2 08～3 04 long,0 47～0 56 wide in acetabular region. Cuticle spinoes to the level of testicular region,body spines up to 24～40μm. Oral sucker approximately funnel shaped,(0 144～0 169)×(0 204～0 232). Circumoral spines 36 in number,in two alternating,uninterrupted rows. Ventral median aboral spine 28μm×6μm;ventral median oral spine (46～50)μm×8μm;dorsal median aboral spine 84μm×11μm;dorsal oral spine 84μm×11μm. Acetabulum (0 144～0 204)×(0 168～0 188),sucker length ratio 1∶1 00～1 275. Prepharynx 0 336～0 624 long. Pharynx barrel shaped,(0 196～0 216)×(0 096～0 124). Esophagus 0 056～0 080 long. Ceca opening into excretory vesicle near posterior end of body. Testes nearly elliptical,contiguous,diagonal. Anterior testis 0 296×0 244,and posterior one 0 416×0 224. Posttesticular space 0 208mm long. Cirrus pouch (0 504～0 640)×0 112. Seminal vesicle (0 176～0 224)×(0 048～0 096). Ejaculatory duct 0 28～0 384 long,with fine spines. Genital pore immediately preacetabular. Ovary (0 144～0 208)×(0 184～0 196),immediately pretesticular or slightly overlapping anterior testis. Vitellaria commencing 0 16～0 20 postacetabular,extending along ceca and conflent in posttesticular area. Egg (65～70)μm×(40～46)μm in life. This species resembles with S. ghanensis Fishthal et Thomas, 1968 in the arrangement of organs,but differs from S ghanensis in the size of body,circumoral spines,eggs,sucker length ratio and the posttesticular space,and in parasitiv situation. 2 Stephanostomum lateolabracis sp. nov. (Fig. 2) Host: Lateolabrax japonicus ;Locality:Stomach;Location:Dongshan Island, Fujian Province;Date:Dec. 23,1996;Infection:2 specimens from 1 of 3 hosts. Description:Body slender,(5 96～6 48)×(0 65～0 67),the widest in acetabular region. Cuticle spinose all over and body spines up to 33～44μm. Oral sucker funnel shaped,(0 152～0 208)×(0 264～0 280). Circumoral spines 36,in two interrupted,alternating rows. Ventral median aboral spine 44μm×12μm;dorsal median aboral spine 81μm×16 μm;ventral median oral spine 35μm×8μm;dorsal median oral spine 90μm×18μm. Acetabulum rounded,(0 356～0 396)×(0 360～0 372). Sucker length ratio 1∶1 88～2 34. Prepharynx 0 40～0 424 long. Pharynx barrel shaped,(0 232～0 240)×0 176. Esophagus 0 12～0 128 long. Ceca opening into excretory vesicle near posterior end of body. Testes at the posterior part of body,anterior testis (0 68～0 70)×(0 30～0 34);and posterior one (0 94～1 14)×(0 26～0 30). Inertesticular space 0 62～0 70 long. Posttesticular space 0 82～0 87mm long. Cirrus pouch (0 896～1 088)×(0 128～0 152),commencing 0 48 postacetabular. Seminal vesicle gourd shaped,(0 268～0 272)×(0 112～0 132);par prostatica (0 072～0 080)×(0 02～0 024);ejaculatory duct 0 48～0 76 long. Genital pore immediately preacetabular. Ovary ovoid,(0 272～0 368)×(0 272～0 312). Vitellaria commencing 0 48 postacetabular,confluent between ovary and anterior testis as well as between two testes and in posttesticular area. Egg (60～68)μm×(36～42)μm. This species differs from the most closely related S ditrematis (Yamaguti,1939) from Ditrema temmincki of Inland Sea in the size of body,eggs,cuticular spines,circumoral spines,testes and posttesticular space,and in the parasitic situation.
基金
广东省高教局和汕头大学重点实验室经费资助
关键词
吸虫纲
复殖目
棘体科
冠冕属
Trematodes,Digenea,Acantholpidae, Stephanostomum
