共查询到20条相似文献，搜索用时 31 毫秒
1.
Zhang Zhinan 《中国海洋湖沼学报》1992,10(1):31-39
Two nematode species of the genusDorylaimopsis (Family Comesometidae) from the Bohai Sea are described.Dorylaimopsis rabalaisi n. sp. similar toD. punctata Ditlevsen, 1918 from which it can be separated by the small size, short and simple spicules without ventral apophyses or
joint line.Dorylaimopsis turneri n. sp. differs from the closest speciesDorylaimopsis angelae (Inglis, 1967) by its higher values of de Man ratio ‘a’, much shorter spicules and higher ratio of gubernacular to spicules
length. A key to species of the genus based on the key by Jensen (1979) is given.
This project was supported by the National Science Foundation, No: 3860804 相似文献
2.
A new species of free-living marine nematode of the genus Paramonohystera was described from the intertidal beach,Weihai.Paramonohystera weihaiensis sp.nov.is characterized by cervical region with a circle of long setae;tail sexual dimorphism,male tail angled dorsally with sharp narrowed of the body at the cloaca,female tail ordinary conico-cylindrical; spicules slender,2.5 abd long; gubemaculum plate,enlarged distal end with two teeth,without apophysis; precloacal supplements absent;Four caudal gland cells obviously extended to tail.The new species differs from the other fourteen known valid congeners by the combination of its characteristics:a circle of long cervical setae,tail sexual dimorphism,spicules slender,2.5 abd long,gubernaculum plate with a distal pair of teeth. 相似文献
3.
A new species of free-living marine nematode of the genus Daptonema Cobb, 1920 is described from the sublittoral sediment of the Jiaozhou Bay, Qingdao. Daptonema parabreviseta sp. nov. is characterized by having narrowed anterior end; small funnel-shaped buccal cavity; short cephalic setae; spicules with bulbiform proximal end and pointed distal end; gubercunalum tubular shape with a blunt dorsal apophysis. The female genital system presents a spacious postvulval sac. The new species closely resembles Daptonema brevisetosum Thanh & Gagarin, 2009. However, it differs from Daptonema brevisetosum by having relatively narrowed head (10 μm vs 20 μm); spicules with bulbiform proximal end and pointed distal end, not bifurcated at distal end. Female genital system with a spacious postvulval sac (vs absent).
相似文献4.
《中国海洋湖沼学报》2021,(3)
A new free-living marine nematode species of the family Xyalidae from Laizhou Bay of the Bohai Sea, China is described and illustrated herein. Paragnomoxyala papillifera sp. nov. is characterized by large funnel-shaped buccal cavity, circular amphidial fovea located posterior to buccal cavity, straight spicules with slightly curved distal end, gubernaculum absent, four papilliform precloacal supplements, tail conico-cylindrical with two ventral embossments in males and having longitudinal rows of cervical setae and subventral caudal setae in males. The new species is easily identified from other two recorded species in the genus by having papilliform precloacal supplements and ventral embossments along conical portion of tail of males. A pictorial key for three species of Paragnomoxyala and comparative table of three species with important characteristics are provided. 相似文献
5.
Wang Shida 《中国海洋湖沼学报》1990,8(3):273-279
Male and female adult midges ofPseudosmittia aizaiensis sp.n. are described and illustrated with figures of morphological characters. The inferior volsella of gonocoxite with large
lobes, the long but equal width gonostylus, and the small projection in basal part of outer margin are the characters that
may separate this species from others. One larva of this genus is purely aquatic in habitat and is associated with Cricotopus
bicinctus,Cardiocladius capucinus andPolypedilum sp. in the same algae debris (Spirogyra sp.) of the Dunghe River. Further, the larva's very short SI and SII bifids, its
5 pairs of lateral teeth on mentum and its absence of premandible brush are the characters that may also separate this species
from any known species of this genus. 相似文献
6.
《中国海洋湖沼学报》2020,(2)
A new free-living marine nematode species of the genus Rhinema belonging to the family Monoposthiidae was collected from marine sediments in the Qiongzhou Strait of the South China Sea,and it is described here as Rhinema longispicula sp.nov.The new species is characterized by coarsely annulated cuticle with 12 longitudinal ridges(alae) marked as reversed V-shaped.The first and second annuli broader and form a kind of a cephalic capsule.The amphideal fovea circular,situated in the middle of the broad second annulus,not surrounded by dense annulations.Buccal cavity cylindrical with a large dorsal tooth.Pharynx with a prominent anterior pharyngeal bulb and an elongated terminal bulb.Elongate spicules strongly curved,with cephalated proximal end and pointed distal end.Gubernaculum boat-shaped,without apophysis.A long and blunt precloacal seta present.Female with two opposed,outstretched ovaries. 相似文献
7.
Two new species of free-living marine nematode from mangrove habitats in Xiamen Bay are identified.Anoplostoma tumidum sp.nov.is characterized by relatively short outer labial setae(0.86–1.00 h.d.),long tail(c 7.2–8.9,c' 8.3–10.5),an instinct swollen distal portion of slender spicule(Sc 94–101 μm),and well developed copulatory bursae without bursal papillae.A.tumidum sp.nov.differs from all valid species of genus Anoplostoma in copulatory apparatus of males with a distinct swollen distal portion of spicule,and a relatively obvious constriction of head.A.paraviviparum sp.nov.is characterized by relatively long outer labial setae(1.11–1.22 h.d.),and tail(c 6.6–8.5,c' 8.6–10.2);elongated spicules with distinct knob-like proximal and pointed distal ends(Sc 46–69 μm);distinct strip-like gubernaculum(length with 11–15μm);well developed copulatory bursae with precloacal papillae and post-cloacal papillae;and a distinct constriction of head.A.paraviviparum sp.nov.is similar to A.viviparum Bastian,1865,but differs in the reproductive mode of female and the constriction of head. 相似文献
8.
《中国海洋湖沼学报》2021,(5)
A new species of Macandrewia Gray from a seamount near Yap Trench in the Western Pacific Ocean was described.Macandrewia yapensis sp.nov.is distinct from its congeners by possessing a foliate shape with contorted lamellae,tuberculiform terminations of desmas,and unique size of spicules.This is the third species of Macandrewia described from the Pacific Ocean.In addition a partial sequence of COI gene was obtained from the new specimen and then it submitted to GenBank.Phylogenetic tree constructed with the partial COI sequences appears to exhibit a more congruent relationship with morphological data of macandrewiid species compared to 28 S gene tree. 相似文献
9.
ＩＮＴＲＯＤＵＣＴＩＯＮＫｎｏｗｌｅｄｇｅｏｆｍａｒｉｎｅＣｙｍｏｔｈｏｉｄａｅｏｆＣｈｉｎｅｓｅｗａｔｅｒｓｉｓｐｏｏｒ,ｅｘｃｅｐｔｆｏｒｔｈｅｃｏｎｔｒｉｂｕｔｉｏｎｓｏｆＹｕ( 1 93 5)ａｎｄＳｈｅｎ ( 1 940 )ｉｎｔｈｅｅａｒｌｙ 2 0ｔｈｃｅｎｔｕｒｙａｎｄＹｕａｎｄＬｉ( 2 0 0 2 ) .ＡｍｏｎｇＮｅｒｏｃｉｌａｉｓｏｐｏｄｓｐｅｃｉｍｅｎｓｄｅｐｏｓｉｔｅｄｉｎｔｈｅＩｎｓｔｉｔｕｔｅｏｆＯｃｅａｎｏｌｏｇｙ,ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ (ＩＯＣＡＳ) ,ｗａｓａｆｏｒｍ (ｃ… 相似文献
10.
《中国海洋湖沼学报》2017,(2)
Phyllochaetopterus species are widely distributed on the coast of China.Here,Phyllochaetopterus hainanensis n.sp.,a new species collected from Hainan Island(China),is reported.It is characterized by having a V-shaped peristomium,two eyespots covered by a pair of large curved peristomial notopodia(cirri located beneath the palps),13-14 chaetigers in the anterior body region,with three enlarged modified chaetae on the fourth notopodium,and more than five chaetigers in the middle body region.The modified chaeta has a slightly inflated head with an obliquely truncate end.The new species resembles Phyllochaetopterus socialis Claparede,1869,but differs in the shape of peristomial notopodia and peristomium.Twelve species of Phyllochaetopterus have been described from the Pacific Ocean,including the new species described here.An identification key to the known Pacific species is provided together with a brief discussion of the taxonomic value of the eyespots for the genus. 相似文献
11.
12.
《中国海洋湖沼学报》2021,(5)
The genus Munidopsis has high biodiversity in seamount habitats.In this study,two new Munidopsis species,Munidopsis ahyongi sp.nov.and Munidopsis carolinensis sp.nov.from the Caroline Ridge in the tropical western Pacific Ocean were described.M.ahyongi sp.nov.is very similar to a group of species in the M.serricornis complex,but can be readily distinguished from the related species in having the oblique posterior orbital margins,2 spines on the lateral carapace margin,and a relatively longer rostral median spine.M.carolinensis sp.nov.is different from two related species primarily in having oblique frontal margins,blunt outer orbital angles,straight lateral margins of the rostrum,scale-like rugae on sternites 5-7,and less spinose pereopod 1(chelipeds,P1) merus and carpus.Aside from the morphological comparisons,DNA barcode analysis and phylogenetic analysis based on the cytochrome c oxidase subunit I gene(COI) were employed for the identification of these new species. 相似文献
13.
14.
15.
FAN Lijing) SUI Zhenghong) * MAO Yunxiang) and GUO Hao) ) Division of Life Science Technology Ocean University of China Qingdao P. R. China ) National Marine Environmental Monitoring Center State Oceanic Administration Dalian P. R. China 《中国海洋大学学报(英文版)》2007,6(1):33-39
1 Introduction Dinoflagellate Alexandrium has received intensive at-tention in recent years, as it is a valuable bioactive com-pound resource and related to harmful algal bloom (HAB)which has negative impact on marine ecology systemaquiculture, human health and tourism (Hallegraeff andBolch, 1992; Smayda, 1997; Vale and Antonia de MSampayo, 2001). However, not all of the species in genusAlexandrium produce toxin (Wendy et al., 2001), so rapididentification and clarification of the phyloge… 相似文献
16.
A new monstrilloid copepod species,Cymbasoma cheni sp.nov.,from Meizhou Bay(an embayment in Fujian Province,southeastern China)is described and illustrated.The diagnostic character of the new species is the structure and armature of the fifth leg,which is represented by a single lobe armed with three naked setae subequal in length.The new species closely resembles Cymbasoma bowmani SuarezMorales and Gasca,1998 in the structure of the fifth legs,and the body proportions,including total body length,and relative lengths of the cephalothorax and the genital double somite.However,Cymbasoma cheni sp.nov.is distinguished by lack of cuticular ornamentation on the cephalothorax,the position of the oral papilla,and the structure of the fifth leg with three naked setae.Although the structure of the fifth legs is similar in Cymbasoma cheni sp.nov.and Cymbasoma quintanarooense(Suarez-Morales,1994),the new species can be easily distinguished from Cymbasoma quintanarooense by the relative length of the antennule,differences in the genital double-somite and the ovigerous spines,and the shape of ocelli.This is the sixth record of this genus from China seas. 相似文献
17.
A new species of the ampharetid genus Amphicteis,A.chinensis sp.nov.,is described based on material from the East and South China Seas.The new species is distinguished from the other known species of this genus by the presence of a lobebehind the paleae.Akey to distinguish all Amphicteis species and the closely related genus Paramphicteis from the Chinese seas is provided. 相似文献
18.
Studies on the community structures of meiofauna and marine nematode at six stations in the Southern Yellow Sea,China 总被引：6，自引：1，他引：5
HUANG Yong ) ZHANG Zhinan) and LIU Xiaoshou) ) College of Marine Life Sciences Ocean University of China Qngdao P.R.China ) Agricultural College Liaocheng University Liaocheng Shandong P.R.China 《中国海洋大学学报(英文版)》2005,4(1):34-42
1Introduction As part of a comprehensive investigation of ecosys-tem dynamics in the Yellow Sea and East China Sea,astudy has been made of meiofauna,defined here asmetazoans passing a0.5mm sieve but retained by a0.031mm sieve.Meiofauna is an important energeticgroup in benthic small food web due to their smallsize,high abundance and fast turnover rates.Theproduction of meiofauna is equal to or higher than thatof macrofauna in estuaries,shallow waters and deepseas(Gerlach,1971;Platt and Warw… 相似文献
19.
A new member of Sphenopsida,Neolobatannularia gen. nov. from Late Triassic of western Liaoning,China
WANG Junyou LI Tao LIU Zhiping GUO Bin KANG Ai NA Yuling LI Yunfeng WANG Hongshan BO Junchen SUN Chunlin 《世界地质(英文版)》2019,22(1)
A new genus Neolobatannularia Sun et Li gen. nov. with the type species Neolobatannularia liaoningensis Sun et Li sp. nov. from the Upper Triassic Yangcaogou Formation of Beipiao, Liaoning, China, is described in this paper. The new taxon is attributed to Equisetales of Sphenopsida based on its branch with internodes, node and leaves borne in whorls on nodes. It is a new member of the Mesozoic Sphenopsida. Although the new taxon shares some morphological characters with the genus Lobatannularia Kawasaki, a genus widely distributed in the Permian Cathaysia flora in East Asia, and the genus Lobatannulariopsis Yang from the Late Triassic of southwestern China, its unique branching pattern is markedly distinguished from the two known genera. Some Triassic known species of Lobatannularia may belong to the present new genus Neolobatannularia. 相似文献
20.
徐凤山 《中国海洋湖沼学报》1992,10(2):153-155
The present paper deals with 4 species of Family Lyonsiidae , collected from the China Seas : one new genus and new species, Sinolyonsia sinica gen . et sp. nov, one species, Lyonsia kawamurai recorded for the first time from the China Seas , and 2 species L . ventricosa Gould and Agriodesma navicula (Adams et Reeve) reported previously from the Yellow Sea by the author . 相似文献