Revisited Syllidae of the English Channel coarse sediment communities

2017 ◽  
Vol 97 (5) ◽  
pp. 1051-1058 ◽  
Author(s):  
Jean-Philippe Pezy ◽  
Alexandrine Baffreau ◽  
Jean-Claude Dauvin
Keyword(s):  
New Species ◽  
Fine Sand ◽  
Coarse Sand ◽  
English Channel ◽  
Numerous Species ◽  
Coarse Sediment ◽  
Branchiostoma Lanceolatum ◽  
Coarse Sediments ◽  
First Time ◽  
Warm Temperate

Among the polychaetes, the Syllidae comprise numerous species whose study over many years has benefitted from valuable revisions and descriptions of new species in Europe. This abundant literature proves very useful for revisiting the taxonomy and distribution of the Syllidae in the English Channel (EC), mainly as regards existing studies on coarse sediment communities in the eastern part of the Channel. This habitat is one of the most widespread in the EC and is known as favourable for the small polychaete fauna including Syllidae. A 2-year survey (winter and summer sampling periods) covering 19 stations, associated with theBranchiostoma lanceolatumcoarse sand community offshore Dieppe-Le Tréport, led to the identification of 6537 individuals from 29 taxa including 27 species. Six fine sand stations were also sampled in which only 12 individuals were collected. Among these species, seven are new for the EC polychaete fauna and six others are observed for the first time in the eastern part of the EC. All the new species for the EC are warm temperate species previously only known south of the Bay of Biscay. The Syllidae list given in Dauvinet al. (2003) has been re-analysed and amended with our list and that of the Chausey Archipelago study (Olivieret al., 2012). To date, 91 Syllidae species have been recorded in the EC and are established mostly in coarse sediments.

A new species of Polygordius (Polychaeta: Polygordiidae): from the inner continental shelf and in bays and harbours of the north-eastern United States

2006 ◽  
Vol 86 (5) ◽  
pp. 1025-1034 ◽  
Author(s):  
Patricia A. Ramey ◽  
Dieter Fiege ◽  
Brian S. Leander
Keyword(s):  
New Jersey ◽  
New Species ◽  
Continental Shelf ◽  
Rank Correlation ◽  
Fine Sand ◽  
Coarse Sand ◽  
Eastern United States ◽  
Sediment Grain Size ◽  
Inner Continental Shelf ◽  
A New Species

A new species of Polygordiidae, Polygordius jouinae sp. nov., along with its distribution, habitat, and reproduction is described. Polygordius jouinae sp. nov., the first North American Polygordius, is a dominant member of macrofaunal communities on the inner continental shelf, and in bays and harbours from Massachusetts to southern New Jersey. It is distinguished from most other Polygordius species by its non-inflated, heavily ciliated pygidium, absence of pygidial glands, and a conical (rather than rounded) prostomium. The 18S SSU rDNA from P. jouinae sp. nov. was sequenced and represents the first named Polygordius species with a DNA reference in GenBank. Spearman rank correlation of sediment grain size with density of P. jouinae sp. nov. at a New Jersey site showed that density was significantly (P<0.05; N=92) positively correlated with the proportion of medium to very coarse sand and negatively correlated with the fine sand fractions. Ecologically, P. jouinae sp. nov. is an important macrofaunal species given its widespread distribution and its fidelity for coarse sand habitats. Thus, its relative abundance may be useful as an indicator of changing sedimentary conditions.

scholarly journals Studies on marine flagellates. V. Morphology and microanatomy of Chrysochromulina strobilus sp. nov.

1959 ◽  
Vol 38 (1) ◽  
pp. 169-188 ◽  
Author(s):  
Mary Parke ◽  
Irene Manton ◽  
B. Clarke
Keyword(s):  
New Species ◽  
Water Samples ◽  
Sea Water ◽  
Water Bottle ◽  
English Channel ◽  
Taxonomic Description ◽  
Different Depths ◽  
First Time ◽  
Depth Distributions

The new species to be described here is very common in the English Channel, though like other members of this genus it is so fragile that it needs to be cultured to be effectively detected. This particular species has been under observation for some years, but publication has been deferred until sections of it could be made available. The observations involved in the taxonomic description have been based on two early isolates numbered 4 and 43 in the Plymouth collection. More recently, however, it has been encountered frequently in routine sea-water samples brought into temporary culture to record the nanoplankton forms present, and we are therefore able for the first time to give tables of seasonal and depth distributions for the incidence of the species, at various stations. In Table i of Appendix (p. 187) its occurrences are listed, all being from water-bottle samples, except those taken on 23 August 1950 and 6 November 1957 (fine tow-net) and on 19 June 1957 (very fine tow-net). Table 2 (p. 188) gives densities at different depths sampled on one day at Hydrographic Station E 1.

A new species of tube-dwelling anemone (Cnidaria, Anthozoa, Ceriantharia,Ceriantheopsis) from the Warm Temperate South-western Atlantic

2015 ◽  
Vol 96 (7) ◽  
pp. 1475-1481 ◽  
Author(s):  
Sérgio N. Stampar ◽  
Fabrizio Scarabino ◽  
Guido Pastorino ◽  
André C. Morandini
Keyword(s):  
New Species ◽  
Fine Sand ◽  
The Other ◽  
Western Atlantic ◽  
Sublittoral Zone ◽  
Warm Temperate ◽  
A New Species

A new species of tube-dwelling anemone of the genus Ceriantheopsis (Cnidaria: Ceriantharia),Ceriantheopsis lineatasp. nov., is described and can be found in fine sand or mud in the sublittoral zone (0–200 m) from Argentina to Brazil (Warm Temperate South-western Atlantic). This new species is distinguished from its congeners by a number of features, however some characters (directive tentacles, line on tentacles and length of P2) allow a conclusive identification among the otherCeriantheopsisspecies.

Associations among Chironomidae and Sandy Substrates in Nearshore Lake Michigan

1984 ◽  
Vol 41 (1) ◽  
pp. 174-179 ◽  
Author(s):  
Michael H. Winnell ◽  
David J. Jude
Keyword(s):  
Lake Michigan ◽  
Morphological Characteristics ◽  
Fine Sand ◽  
Nonparametric Tests ◽  
Coarse Sand ◽  
Sediment Type ◽  
Controlled Environment ◽  
Frequency Distributions ◽  
Coarse Sediments ◽  
Morphological Differences

Chironomids and sediments were collected at 3- to 15-m depths along the shoreline of eastern Lake Michigan from 1978 to 1980. Chironomids were the most frequently occurring (92% of samples), most diverse (41 taxa), and the second-most numerous (1634∙m−2) group in this depth regime. The generalized sediment type was moderately sorted, fine sand. Sediments were grouped into three categories roughly corresponding to coarse [Formula: see text], fine [Formula: see text], and very fine [Formula: see text] sands. Nonparametric tests and a comparison of frequency distributions and densities distinguished chironomid–substrate associations. Two species were strongly associated with coarse sand, 5 species with coarse–fine sands and fine–very fine sands, and 11 species with very fine sand. We postulate that observed chironomid–substrate associations were related in part to morphological differences among taxa. Species most strongly associated with coarse sediments were small, slender, and fast-moving forms with tough outer Body integuments, morphological characteristics that are necessary for survival in the ephemeral, physically controlled environment. In the more stable, predictable environment where fine and very fine sands were most evident, species exhibited a wider variety of morphological characteristics, which included soft-bodied, tubicolous forms.

scholarly journals Inventory and new records of benthic amphipods from macrophytes and fine sand communities of the Bizerte lagoon (Tunisia, SW Mediterranean Sea)

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Marwa Khammassi ◽  
Jérôme Jourde ◽  
Wahiba Zaabar ◽  
Sarra Laabidi ◽  
Pierre-Guy Sauriau ◽  
...  
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
New Records ◽  
Benthic Communities ◽  
Fine Sand ◽  
Amphipod Species ◽  
Bizerte Lagoon ◽  
Northern Tunisia ◽  
Two New Species ◽  
First Time

AbstractShallow water benthic communities from the Bizerte lagoon (northern Tunisia) were investigated at 33 stations sampled in April and July of 2016 and 2017. A total of 18 amphipod species were recorded among which two new species were recorded: one for Tunisian coasts (Jassa marmorata) and a second one for the Mediterranean Sea (Serejohyale spinidactylus). In addition, and compared to previous studies, nine amphipod species were collected for the first time in this lagoon. Amphipod assemblages were numerically dominated by the families Melitidae (28%), Caprellidae (14.5%) and Ampithoidae (11.7%). Three species: Cymadusa filosa, Dexamine spinosa and Elasmopus rapax were numerically dominant. According to their biogeography, most of the recorded amphipod species (11–18) showed an Atlantic–Mediterranean distribution, whereas four were cosmopolitan and three lessepsian Indo-Pacific migrants, but no species were Mediterranean endemic. Specimens of both Jassa marmorata and Serejohyale spinidactylus are illustrated and described.

Diatoms of the genus Navicula of Lake Teletskoye (Altai) and some rivers of its basin

2019 ◽  
Vol 53 (2) ◽  
pp. 255-278
Author(s):  
D. A. Chudaev
Keyword(s):  
New Species ◽  
Diatom Species ◽  
Lake Teletskoye ◽  
First Time ◽  
One New Species

As a result of study of 18 samples, collected in Lake Teletskoye and inflowing rivers in 1992–1995, 34 diatom species of the genus Navicula Bory were found. Among them 21 taxa are new for the studied region, 7 species (Navicula arkona, N. hangaica, N. cf. pseudoreinhardtii, N. ricardae, N. scaniae, N. schweigeri, N. suecicarum) are recorded for the first time in Russia. One new species (N. pseudoharmoniae sp. nov.) is described. It is compared with N. harmoniae and N. digitoconvergens.

Alkaliphilic species Euastrum lacustre (Charophyta, Zygnematophyceae), first record from Russia

2020 ◽  
Vol 54 (2) ◽  
pp. 313-320
Author(s):  
O. V. Anissimova
Keyword(s):  
Cell Wall ◽  
New Species ◽  
First Record ◽  
European Russia ◽  
Similar Species ◽  
Morphological Differences ◽  
First Time ◽  
Kursk Region

Euastrum lacustre is reported for Russia for the first time. This alcaliphilic species was found in the periphyton and plankton of three lakes in the Kursk Region (European Russia). A description of morphology, including the relief of cell wall, and habitats where this taxon is found are represented. LM and SEM microphotographs are provided. Morphological differences of E. lacustre from similar species are discussed. New species for region, namely Closterium aciculare, Cosmarium formosulum, C. granatum, C. pseudoinsigne, C. reniforme and Staurastrum pingue, are found in the samples together with E. lacustre.

To the moss flora of the highlands of the Northern Elbrus region (Central Caucasus)

2013 ◽  
Vol 47 ◽  
pp. 310-317 ◽  
Author(s):  
G. Ya. Doroshina
Keyword(s):  
New Species ◽  
Rare Species ◽  
The Caucasus ◽  
Central Caucasus ◽  
First Time

The list of 89 taxa of mosses from the northern slopes of Elbrus Mount is provided. New species for the region and rare species for the Caucasus are marked. Conostomum tetragonum (Hedw.) Lindb. was collected in the Caucasus for the first time.

The genus Tolmerinus Bernhauer in Borneo (Coleoptera: Staphylinidae, Staphylininae)

2018 ◽  
Vol 154 (1) ◽  
pp. 9-15
Author(s):  
Guillaume De Rougemont
Keyword(s):  
New Species ◽  
Three New Species ◽  
First Time

The genus Tolmerinus Bernhauer is recorded from Borneo for the first time with the descriptions of three new species: T. brunneus sp.n., T. sharpi sp.n.and T. tutus sp.n.

Discovery of the genus Venanides Mason 1981 (Hymenoptera: Braconidae, Microgastrinae) in Europe, with description of a new species parasitizing Carcina quercana (Fabricius) (Lepidoptera: Peleopodidae)

2020 ◽  
Vol 71 (1) ◽  
pp. 45-57
Author(s):  
Mark R. Shaw
Keyword(s):  
Czech Republic ◽  
New Species ◽  
Solitary Parasitoid ◽  
First Time ◽  
A New Species

The small Microgastrinae genus Venanides is recorded from Europe (Netherlands, Germany and Czech Republic) for the first time, where one species, Venanides carcinae sp. nov., described here, proves to be a regular solitary parasitoid of Carcina quercana. Outline notes on its biology, phenology and abundance are given.

Sign in / Sign up

Export Citation Format

Share Document