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One new species of free-living marine nematodes (Enoplida,Anticomidae, Cephalanticoma) from the Huanghai Sea 总被引：1，自引：0，他引：1
One new species of free-living marine nematodes Cephalanticoma filicaudata sp. nov. from the Huanghai Sea, China is described and illustrated. Cephalanticoma filicaudata sp. nov. is characterized by well developed cephalic capsule, three teeth at the anterior of oesophagus, excretory pore opens posterior to cervical setae, only two cervical setae per file, body length longer than 5 200 μm, tail long and no ventral-lateral seta between the supplement and the cloacal opening. Types are deposited in the College of Marine Life Sciences, Ocean University of China. 相似文献
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文章描述了采自青岛胶州湾潮下带沉积物中自由生活线虫Wieseria属的两个新种。新种Wieseria sinica sp.nov.特征为具有短的唇刚毛和头刚毛，且指向后方；具有椭圆形双边化感器；弓形的交接刺具有翼膜；环状的引带以及棒状尾。新种Wieseria tenuisa sp.nov.特征为具有大的德曼值（133.6）；长的唇刚毛指向前方；交接刺具有翼膜，近端呈钩状；引带呈棒状；具有相当长的棒状尾（长度相当于7.9倍泄殖腔相应体径）。它区别于新种Wieseria sinica sp.nov.主要在于更长的唇刚毛，且指向前方；交接刺相对较直且具有钩状近端，身体更加细小（德曼“a”值较大）。文章更新完善了的Wieseria属的二岐检索表。 相似文献
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中国福建省红树林湿地中自由生活海洋线虫(联体线虫科)的2个新种 总被引：2，自引：1，他引：1
本文描述了中国福建省红树林湿地中自由生活海洋线虫的2个新种。Sabatieria conicoseta sp.nov.的主要特征是：具有短的锥形体刚毛、12-15个管状的肛前附器以及长度为12-15 μm的直的引带突起。Dorylaimopsis papilla sp.nov.的主要特征是：交接器中部具有角质化带状隔膜，近端头状具一小钩，其长度为肛门所在位置体直径的1.5–1.8倍，具有长度为37-40μm的背尾指向的引带突起。泄殖孔前具16-18个微型乳突状的肛前附器。 相似文献
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描述了采自东海陆架沉积物中自由生活线虫Hopperia和Nemanema属的两个新种。新种大化感器霍帕线虫主要特征是螺旋形化感器5圈，较大；弓形交接刺近端宽大具有中肋，延伸至三分之一处；引带具有弯曲的引带突；6个乳突状的肛前辅器；锥柱状尾具有膨大的末端和尾端刚毛。新种小线虫的主要特征是身体大小是属内最小的；具有较大的椭圆形化感器；尾锥状；交接刺细，具有腹面翼膜，近端弯钩状；引带环形；1个肛前辅器乳突状，其上着生3条刚毛。更新完善了Hopperia属17个种的二岐检索表。 相似文献
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One new species of free-living marine nematodes Enoplus taipingensis sp.nov.from the rocky intertidal seaweeds in the Taiping Bay,Qingdao is described and illustrated with scanning electron microscopy observation and 18S rRNA gene sequence analysis.Enoplus taipingensis is characterized by special arrangement of lateral setae on the tail,three cervical setae,distal structure on the supplement,and much longer body length with bigger De Man ratio "a".Type specimens are deposited in the College of Marine Life Science,Ocean University of China. 相似文献
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通过对南海采集的沉积物进行分析，发现一新种奇足威伦狭腹猛水蚤，这也是首次在中国海报道威伦狭腹猛水蚤属。新种奇足威伦狭腹猛水蚤与同属其它种的主要区别特征是：身体表面除尾节有小刺外，其余各节表面均光滑；第四胸足外肢第三节内侧具两根刚毛；雌性第五胸足內肢具4根刚毛和刺，外肢顶端具一根尖刺，尾叉长约为宽的六倍。 相似文献
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于东海陆架沉积物中发现并描述一自由生活海洋线虫新种：镰刀光皮线虫Actinonema falciforme sp.nov.镰刀光皮线虫的主要鉴定特征为：六根外唇刚毛和四根头刚毛成一圈；表皮具复杂而前后不同的装饰和侧分化；大而明显的化感器椭圆形，中间具一横裂口；单前精巢，反折；前后双卵巢，反折；缺失交接刺和引带，仅具有镰刀形引带侧件。在光皮线虫属中，只有镰刀光皮线虫和长尾光皮线虫A.longicaudatum缺失交接刺和引带，而仅具有引带侧件。镰刀光皮线虫可根据较短的体长、镰刀形引带侧件和较短的尾部而区别于长尾光皮线虫。 相似文献
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似三核线虫属的两个新种似三核线虫红树林种（Tripyloides mangrovensis n.sp.）和似三核线虫厦门种（Tripyloides amoyanus n.sp.）在本文中分别被描述，标本分别采自中国厦门同安湾红树林和海门岛红树林。两个新种都具有6根较粗的外唇刚毛，雄性标本不具有肛前附器，尾部圆锥圆柱形且不具有末端突起。似三核线虫红树林种（Tripyloides mangrovensis n.sp.）口器分成两部分，化感器圆形，尾部具有显著的近端圆锥形和远端纤细的圆柱形，圆柱形部分占尾部的2/3。似三核线虫厦门种（Tripyloides amoyanus n.sp.）口器分成3部分，具有小齿，化感器小，双环状，尾部1/3部分为圆柱形，引带有4个小齿。 相似文献
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Janet M. Bradford‐Grieve 《新西兰海洋与淡水研究杂志》2013,47(4):781-793
Two species of benthopelagic calanoid Copepoda, Neoscolecithrix cf. magna (Grice, 1972) and N. ornata n. sp., are described from the upper slope off North Cape, New Zealand. Neoscolecithrix ornata is distinguished from other species of Neoscolecithrix Canu, 1896 s.s. that have a female leg 5 terminal segment with 4 spines (2 terminal and 1 on each border) principally by the transverse row of long, fine spines on the female genital double somite; and by the more squat terminal segment of leg 5 (length/width ratio about 3.7). This is the second time Neoscolecithrix has been recorded from New Zealand. A new genus, Cenognatha n. gen., is distinguished from Neoscolecithrix principally because: rostrum short (bearing 2 filaments); mandibu‐lar gnathobase masticatory margin with slender dorsal spinulose seta; maxilla endite 1 with 5 well‐developed setae, endite 3 without brush‐like sensory seta, endopod usually with 3 long worm‐like sensory setae and 5 brush‐like setae; posterodistal border of basis of legs 1–3 without spines; distal segment of female leg 5 and its basis subequal in length; male leg 5 of similar lengths on both sides (styliform on right), endopod present at least on 1 side, 1‐segmented and spine‐like on right. 相似文献
10.
Janet M. Bradford‐Grieve 《新西兰海洋与淡水研究杂志》2013,47(4):941-949
Xantharus Andronov, 1981 is reported, for the first time from New Zealand, from the upper slope (306 m) off the southeastern coast of North Island (41°04.10′S, 176°22.05′E). Xantharus cryeri n. sp. females differ from the three known species by a combination of characters: antennules that extend to the distal border of pedigerous somite 2; ancestral segment XVIII of the antennule with 1 seta; mandible basis with 3 setae; maxilla endite 1 with 5 setae; leg 1 basis with inner distal border lined with small spinules; and leg 5 is squat, with all segments as long as wide and the 2 terminal spine‐like extensions of the terminal segment approximately as long as the articulated, inner, subterminal spine. 相似文献
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厦门岛附近自由生活海洋线虫的研究—联体线虫科的变异毛咽线虫和异毛联体线虫新种 总被引：1，自引：0，他引：1
本文地发现于厦门大学海滩潮间带泥基质区两种联体线虫科（Comesomatidae Filipjev,1918)的虫种进行了描述，异毛联体线虫新种（Paracomesoma xiamenense sp.nov.)由于其第二圈感觉毛的长度相同，并且比第三圈头感觉毛短；交合刺两根不等长并有两列、每列28－30个肛前乳突以及肛后的柄状乳突等特征使得该种成为一个新种。变异毛咽线虫（Dorylaimopsis variabilis Vincx,1997)的侧边分化的纵列刻痕；弓形的交合剂、突出的背尾侧骨突和14个肛前乳突等特征同Vincx(1997)的描述相近，但某些测量的数值有差别。本文并给出了异毛联体线虫属新的双歧式检索表。 相似文献
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A few species in the genus Grateloupia (Halymeniaceae,Rhodophyta) have been investigated in detail with respect to morphological observations and molecular analyses.In this study,the authors document the vegetative and reproductive structures of two new species of Grateloupia,G.dalianensis H.W.Wang et D.Zhao,sp.nov.and G.yinggehaiensis H.W.Wang et R.X.Luan,sp.nov.They both have the morphological character that carpogonial ampullae and auxiliary cell ampullae are the simple Grateloupia-type.The two species can be distinguished from other species of the genus by their distinctive morphological features respectively.Based on ribulose-1,5-bisphosphate carboxylase/oxygenase (rbcL) gene sequences,the phylogenetic tree obtained in the study indicated that they are both embedded within the Grateloupia clade.G.dalianensis clusters a subclade with G.asiatica,and G.yinggehaiensis forms a single monophyletic subclade with G.hawaiiana. 相似文献
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Several species of Gastrotricha were found among samples of nematodes extracted from a sandy ocean beach, South Broulee beach, in southeastern Australia. One of these Gastrotricha turned out to be a species new to science which is described as Halichaetonotus australis sp. nov. in this study. Although the spines of the hydrofoil scales resemble those of the cosmopolitan H. aculifer, a distinctive feature of the new species is the presence of three prominent posterior dorsal spines. These are exaggerations of the keels found on the dorsal overlapping scales that cover the dorsal surfaces of the head, neck, and trunk. The spines are almost as long as the rami of the terminal furca. H. australis sp. nov. also resembles H. marivagus, but differs in lacking both a cephalion and hypostomion. Freeze drying is introduced as a preparation method for scanning electron microscopy of Gastrotricha. 相似文献
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作者以山东烟台养马岛采集的未受扰动的样品为研究材料,对中国黄海潮间带自由生活线虫的种类和多样性展开研究,发现两个新纪录种八棘单茎线虫(Monoposthia octalata Galtsova,1976)和瑞氏拟单宫线虫(Paramonohystera riemanni (Platt,1973) Lorenzen,1977)并进行描述。八棘单茎线虫主要特征为体表具有八排侧装饰,化感器呈圆形、较小,口腔具有一个大的背齿,口腔前端具有明显角质化波浪形的结构,无交接刺,引带作镰刀状,尾呈锥状。标本特征与Galtsova描述的模式标本特征基本吻合,只是黄海的标本虫体稍长,化感器略大,引带稍长。瑞氏拟单宫线虫主要特征为虫体较细,头刚毛短,化感器呈圆形位于口腔后部,口腔内不具齿,交接刺稍弯曲,为对应体径的4.1倍,引带简单,尾细长呈纤毛状。标本特征与Platt描述的模式标本特征基本吻合,只是黄海的标本虫体稍长,头刚毛和尾部更长,交接刺略长。 相似文献
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Halocyprid ostracods are appreciable part of ostracods floating through virtually everywhere in marine environment.In this study,we describe a new species of genus Polyconchoecia Xiang,Chen and Du,2018,tribe Conchoeciini Chavtur and Angel,2011,family Halocyprididae Dana,1853 from the middle of the South China Sea.Polyconchoecia chenii sp.nov.is very close to P.commixtus Xiang,Chen and Du,2018.But it differs from P.commixtus by the distinctions of locations of major glands of carapace and the characteristics of appendages:more posteriorly situated left asymmetric gland of carapace,no right asymmetric gland;segmented frontal organ;the endopod 2 of the first antenna with a very small seta;a-and c-setae of the first antenna with long end joint have long end joint,the b-and d-setae have no end joint,spinose e-seta without end joint;the e-seta of the second antenna is present;teeth side is distinctive;the setal counts of the mandible,maxilla,fifth limb,and sixth limb are individual.The locations of the major glands on carapace and the characteristics of the first antenna can be the key of the new species.This work is the second discovery of the genus Polyconchoecia from the world. 相似文献
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西北太平洋围线海绵科(海绵动物门:六放海绵纲:双盘海绵目)一新种 总被引：2，自引：1，他引：1
本文记录了西太平洋深海围线海绵科1新种——扭形白须海绵。该海绵共含2个标本，其中1个采集于雅浦海山932米处，另1个采集于卡罗琳海山775.3米处。该新种含有椭圆形大双盘骨针、3种类型的双盘骨针、棒状骨针和节杖骨针，使其很容易与该属下的现有8种区分开。该种为西北太平洋报道的第4种白须海绵属的种。 相似文献
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对于中国马尾藻属，真马尾藻亚属滑托组Malacocarpicae（J.Ag．）Abbott，TsengetLu．总状托序亚组suhectionRacemosae,具腺系SeriesGlandulariae的种类进行了系统的研究。结果表明，中国共有具腺系3个种，除棒托马尾藻前人已经报道外，本文建立了两个新种，它们是：1．线形马尾藻，模式标本于1955年5月7日来自广东省硇洲岛，模式标本号为AST55－2259；2．钦州马尾藻，模式标本于1955年5月7日采自广西钦州湾龙门镇，模式标本号为AST55－1987。两者的模式标本均保存于中国科学院海洋研究所藻类标本室。 相似文献
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中国真囊水母属三个新种记述 水螅虫纲 花水母目 棒状水母科 总被引：5，自引：0，他引：5
中国海域水螅虫纲(Hydrozoae),花水母目(Anthmedusae),棒状水母科(Corymorphidae)的真囊水母属(Euphysora)经研究有3个新种:褐色真囊水母(Euphysora brunnescentis sp.nov.)、刺胞真囊水母(Euphysora knides sp.nov.)和硬手真囊水母(Euphysora solidonema sp.nov.),对此予以详细的描述报道.模式标本保存于厦门大学海洋系. 相似文献