Pseudolella major sp. nov.(Axonolaimidae,Nematoda) from the intertidal zone of the East China Sea

A new species of free-living nematode, Pseudolella major sp. nov. is described from the intertidal mudflats of Ximen Island in the East China Sea. Pseudolella major sp. nov. is characterized as follows: body length ~1 300 μm; short cephalic setae, 2–3 μm long; amphidial fovea loop-shaped with elongated ventral branch; ventral branch 50–60 μm long and extending past the base of buccal cavity; buccal cavity cylindrical with arching or spherical base; three heavy outwardly-curving odontia with blunt tips located at anterior of buccal cavity; pharynx short with posterior bulb; ventral gland cell elongate oval-shaped, located posterior to pharyngo-intestinal junction; excretory pore situated at the level of the middle of buccal cavity; tail conical to cylindrical; spicules arched, with double-cephalate proximal end; gubernaculum with a strong dorsal caudal apophysis.     

Paramonohystera weihaiensis sp.nov.(Xyalidae,Nematoda) from the intertidal beach of the Yellow Sea,China

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.     

<Emphasis Type="Italic">Pseudolella major</Emphasis> sp. nov. (Axonolaimidae,Nematoda) from the intertidal zone of the East China Sea

A new species of free-living nematode, Pseudolella major sp. nov. is described from the intertidal mudflats of Ximen Island in the East China Sea. Pseudolella major sp. nov. is characterized as follows: body length ~1 300 μm; short cephalic setae, 2–3 μm long; amphidial fovea loop-shaped with elongated ventral branch; ventral branch 50–60 μm long and extending past the base of buccal cavity; buccal cavity cylindrical with arching or spherical base; three heavy outwardly-curving odontia with blunt tips located at anterior of buccal cavity; pharynx short with posterior bulb; ventral gland cell elongate oval-shaped, located posterior to pharyngo-intestinal junction; excretory pore situated at the level of the middle of buccal cavity; tail conical to cylindrical; spicules arched, with double-cephalate proximal end; gubernaculum with a strong dorsal caudal apophysis.     

A new species of Parodontophora (Nematoda: Axonolaimidae) from the intertidal zone of the East China Sea

This study described a new species of free-living nematode discovered in the intertidal mudflat of Ximen Island,East China Sea.The new species,designated Parodontophora longiamphidata sp.nov.,was characterized by a cylindrical body with tapering extremeties;cuticle smooth without somatic setae;four short cephalic setae;cylindrical buccal cavity with six clawlike teeth at the top of stoma;pharynx cylindrical with widened base;amphidial fovea crook-shaped with elongated scalariform branch extending past level of base of pharynx and ventral gland;ventral gland cell long-oval shaped located posterior to pharyngo-intestinal junction;excretory pore at level of middle of buccal cavity;tail conico-cylindrical with enlarged tip;three caudal gland cells,male spicules arched with cephalic proximal end and tapered distal end;gubernaculum with dorso-caudal apophysis;female with two opposed outstretched ovaries;and vulva at slightly post-midpoint of body length.This new species was close to P.wuleidaowanensis Zhang,2005 and P.polita Gerlach,1955 in terms of long amphidial fovea branch.The newly found species was easily distinguishable from the two documented;its amphidial fovea branch(255–290 μm versus 72–106 and 125–150 μm) was obviously longer.Key to the Parodontophora species with a longer amphidial fovea branch was given.     

Paragnomoxyala papillifera sp. nov.(Nematoda: Monhysterida) from the Bohai Sea,China

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.     

Daptonema parabreviseta sp. nov. (Xyalidae,Nematoda) from the Jiaozhou Bay of the Yellow Sea,China

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).

     

Sabatieria sinica sp.nov.(Comesomatidae,Nematoda) from Jiaozhou Bay,China

A new free-living marine nematode species of the genus Sabatieria was documented from the sediment of the Jiaozhou Bay,Qingdao,China,and it has been named Sabatieria sinica sp.nov.It is characterized by homogeneous cuticle without lateral differentiation,relatively short cephalic setae,spiral amphideal fovea with 2–2.25 turns;thick spicules with a mid constriction or joint,gubernaculum with a long straight dorso-caudal apophyses,and 6–7 prominent papillar precloacal supplements.This new species could be distinguished from other congener species by the combination of its characteristics:body size,length of cephalic setae,number of amphid turns,structures of spicules and gubernaculum,and type and number of precloacal supplements.An update dichotomous key is provided for nine species of pulchra group of Sabatieria including the new species.     

Leptolaimus holovachovi sp. nov. (Nematoda) from Shenzhen Mangrove Nature Reserve,Shenzhen, South China

Journal of Oceanology and Limnology - A new free-living marine nematode species of the genus Leptolaimus belonging to the family Laptolaimidae was collected from intertidal sediments of the...     

Karlodinium elegans sp. nov. (Gymnodiniales,Dinophyceae), a novel species isolated from the East China Sea in a dinoflagellate bloom

Journal of Oceanology and Limnology - On May 24–29, 2019, a harmful algal bloom occurred in Pingtan coastal areas, Fujian, southeast China, and caused mass mortality of cage-cultured fish....     

Hypoglossum fujianensis sp. nov. (Delesseriaceae, Rhodophyta) from Fujian Coast, China

Hypoglossum fujianensis sp. nov. is an epiphytic alga in the intertidal zone. Plants are light red, 0.9–2 cm high. Margin of branches gives rise to uniseriate hair-like rhizoids, formed outward from the fusion of the second-and third-order cells. Blades are single layered (except the midrib) and uncorticated. Tetrasporangial sori are formed on the middle part of blades. The globular tetrasporangia are developed from lateral pericentral cells. Project 39391800 supported by the NSFC.     

Description of Cephalodella changdensis sp. nov. (Rotifera: Notommatidae) from Hunan Province,China

Journal of Oceanology and Limnology - A new freshwater rotifer Cephalodella changdensis sp. nov. discovered in two locations in Changde, Hunan, China, is described morphologically. The new species...     

Chlamydomonas sajao nov. sp. (Chlorophyta,Volvocales)

A new species ofChlamydomonas, namely,C. sajao nov. sp. of the Volvocales, Chlorophyta was isolated from a duckweed growing near a ricefield in the vicinity of Guangzhou, China. This interesting unicellular green alga, similar toC. mexicana from Mexico, secretes quantities of extracellular mucilaginous polysaccharides, and may be employed in improving soil quality. The new species resemblesC. waldenburgensis Moewus in most characteristics but differs in three important features.     

Eualus heterodactylus sp. nov., a new hippolytid shrimp from Chinese coast of the Yellow Sea （Crustacea,Decapoda, Caridea）

A new species from the caridean family Hippolytidae, Eualus heterodactylus sp. nov. is described and illustrated based on the specimens collected from Chinese coast of the Yellow Sea. The new species is a part of an informal species group characterized by the possession of epipods on the anterior three pairs of pereopods, and is distinguished from other species of this group by the dactyli of the third to fifth pereopods possessing distinctly stair-like flexor margins in males.     

Dinophysoid dinoflagellates from subphotic depths: Amphisolenia sp. aff. brevicauda,Dinofurcula tricornuta sp. nov., and Dinophysis profunda sp. nov. (Dinophysales,Dinophyceae)

Journal of Oceanology and Limnology - Three species of dinophysoid planktonic dinoflagellates are described from the eastern Mediterranean Sea. Amphisolenia sp. aff. brevicauda was collected at...     

Two new marine benthic diatom species of Hippodonta (Bacillariophyceae) from the coast of China: H. nanjiensis sp. nov. and H. qingdaoensis sp. nov.

The diversity and distribution of Hippodonta species on the coast of China are largely unknown due to limited investigations. In this paper, we report the detailed morphology and ultrastructure of two new species: H. nanjiensis sp. nov., collected from intertidal sandy sediments of Nanji Islands, the East China Sea and H. qingdaoensis sp. nov., collected from intertidal sandy sediments of the No. 1 Bathing Beach in Qingdao City, the Yellow Sea. Both species occur mainly in the middle part of the intertidal zone. H. nanjiensis possesses a unique large round central area. H. qingdaoensis differs from congeners in having a unique stria pattern, wherein the areolae in the middle transapical striae are less developed or absent on the primary side of the valve, and two areolae per stria are apparent under light microscopy(LM). This study expands our knowledge of Hippodonta diversity and distribution on the coast of China.     

Two new species of the genusDorylaimopsis Ditlevsen, 1918 (Nematoda: Adenophora,Comesomatidae) from the Bohai Sea,China

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     

FIVE RED TIDE SPECIES IN GENUS PROROCENTRUM INCLUDING THE DESCRIPTION OF PROROCENTRUM DONGHAIENSE LU SP. NOV. FROM THE EAST CHINA SEA

A new planktonic dinoflagellate, Prorocentrum donghaiense I_a sp. nov., is described in the present paper. The water sample was collected from the Changjiang Estuary, the East China Sea. The species identification is based on shape, size, surface micro-morphology, ornamentation of thecal plates and the architecture of the pel‘iflagellar area and the intercalary bands as seen by fight and scanning electron microscope. Prorocentrum donghaiense Lu sp. nov. is compared with other prorocentrum species with respect to morphological characteristics and bloom behavior. It is not known whether Prorocentrum donghaiense Lu sp. nov produces phycotoxins like some other Prorocentrum species. Four other red tide species in the family Prorocentraceae (Dinophyceae), namely P. balticum, P. minimum, P.micans, P. triestinum, were examined and identified by light and scanning electron microscope. They have been recorded as bloom-forming species. Some aggregates of Prorocentrum are observed at the end of blooms. An event of strong discoloration caused by P. donghaiense could be detected by satellite sensor in the East China Sea in the late spring, of 1995.     

DNA barcode assessment of Ceramiales (Rhodophyta) in the intertidal zone of the northwestern Yellow Sea

A total of 142 specimens of Ceramiales(Rhodophyta) were collected each month from October 2011 to November 2012 in the intertidal zone of the northwestern Yellow Sea. These specimens covered 21 species,14 genera,and four families. Cluster analyses show that the specimens had a high diversity for the three DNA markers,namely,partial large subunit r RNA gene(LSU),universal plastid amplicon(UPA),and partial mitochondrial cytochrome c oxidase subunit I gene(COI). No intraspecific divergence was found in our collection for these markers,except for a 1–3 bp divergence in the COI of Ceramium kondoi,Symphyocladia latiuscula,and Neosiphonia japonica. Because short DNA markers were used,the phylogenetic relationships of higher taxonomic levels were hard to evaluate with poor branch support. More than half species of our collection failed to find their matched sequences owing to shortage information of DNA barcodes for macroalgae in Gen Bank or BOLD(Barcode of Life Data) Systems. Three specimens were presumed as H eterosiphonia crispella by cluster analyses on DNA barcodes assisted by morphological identification,which was the first record in the investigated area,implying that it might be a cryptic or invasive species in the coastal area of northwestern Yellow Sea. In the neighbor-joining trees of all three DNA markers,H eterosiphonia japonica converged with D asya spp. and was distant from the other Heterosiphonia spp.,implying that H. japonica had affinities to the genus Dasya. The LSU and UPA markers amplified and sequenced easier than the COI marker across the Ceramiales species,but the COI had a higher ability to discriminate between species.     

New genus and species of polyplacophora (Mollusca) from the East China Sea

The present paper dealing with two new species and one new genus of the Polyplacophora, is the first of a series of reports of systematic study on the deep sea mollusca collected by the research vesselsJINXING andKEXUE I of the Academia Sinica, Institute of Oceanology, during 1978 and 1981 from the continental margin to the bathyal zone of the East China Sea. Contribution No. 1647 from the Institute of Oceanology, Academia Sinica.     

A Taxonomic Study of the Genus Tinocladia (Chordariales, Phaeophyta) in China Coasts I. Two new species, T. eudesmoides sp.nov. and T. zhangii sp.nov.

1INTRODUCTIONThegenusTinocladiaKylinderivedfromthege nusEudesmeJ.Ag.,wasestablishedbyKylinin1 940 .Untilnow ,fivespecieshavebeenreported .Threespecies,T .crassa (Sur.)Kylin(byC .K .Tseng,1 983 ) ,T .gracilisDingetLuandT .mi crosporangiiDingetLu (byDingetal.,2 0 0 4)inthegenusTinocladiahadbeenreportedtodate.Inthecourseofourinvestigationonthespecimensofthege nusTinocladiacollectedfromtheYellowSeacoastsandkeptintheHerbariumoftheInstituteofOceanolo gy,ChineseAcademyofSciences,twomo…