Studies on the ecology of some temporary freshwater pools in Victoria with special reference to microcrustaceans

1977 ◽  
Vol 28 (4) ◽  
pp. 439 ◽  
Author(s):  
DW Morton ◽  
IAE Bayly
Keyword(s):  
High Probability ◽  
Calanoid Copepod ◽  
Shallow Waters ◽  
New Combinations ◽  
Common Occurrence ◽  
Chemical Parameters ◽  
Daphnia Carinata ◽  
Large Numbers ◽  
Three New Species ◽  
Ph Range

Fifty-three temporary freshwater pools (mean depth 23 cm) located mainly in eastern Victoria were studied from February to September 1973. Chemical parameters determined were pH (range 5.7-8.2, mean 6.9), conductivity (K18, range 55-5500, mean 340 �S/cm), dissolved oxygen (range 23-170, mean 72% saturation) and turbidity (range 2-310, mean 50 Formazin turbidity units). A total of 60 microcrustacean species was recorded. The Australasian endemic cladoceran, Saycia cooki (King), was of common occurrence from June through to August. The fact that it tends to reach peak numbers early in the life of a pool is probably related to the production of large numbers of ephippial eggs. In contrast, cladocera which produce only one or two ephippial eggs, such as Chydorus, Moina and Simocephalus, tend to appear later in succession. Simocephalus expinosus (benthic) and Daphnia carinata, s.l. (planktonic) had mutually exclusive distributions and are apparently unable to coexist in shallow waters. Endemic cyclopoid copepods encountered included three new species of Microcyclops, M. arnaudi (Sars), Acanthocyclops australis Sars, and Acanthocyclops, sp. nov. Like Saycia, Microcyclops varicans and Acanthocyclops bisetosus exhibited maximal numbers early in succession. Several new combinations of coexisting calanoid copepod species belonging to the genera Boeckella and Hemiboeckella are reported. Computer analysis showed that the following four groups of species had a high probability of co-occurrence: (1) Cypretta sp., Attheyella australica, Ilyodromus sp., Saycia cooki; (2) Cyprinotus leanus, Acanthocyclops bisetosus, Moina tenuicornis; (3) Boeckella major, B. pseudochelae, Cypris sp., Daphnia carinata, s.l. ; (4) Simocephalus exspinosus, Microcyclops varicans.

scholarly journals Three new species of Scissurellidae (Gastropoda, Prosobranchia) from the coast of Brazil

1972 ◽  
Vol 21 (0) ◽  
pp. 01-13 ◽  
Author(s):  
Pierre Ch. Montouchet
Keyword(s):  
New Species ◽  
Sao Paulo ◽  
The State ◽  
Shallow Waters ◽  
Brazilian Coast ◽  
São Paulo ◽  
Internal Anatomy ◽  
The Third ◽  
Deep Waters ◽  
Three New Species

A consultation of the original descriptions of the genera of Scissurellidae led the author to conclude that the valid names for the genera of this family are: Scissurella d'Orbigny, 1823 (redescription by Sowerby, 1824), Anatoma Woodward, 1859, Inoisura Hedley, 1904, Scissurona Iredale, 1924, Sinezona Finlay, 1927. Scissurella and Anatoma are cosmopolites, the first generally living in shallow waters, associated to sea-weeds, while the second is found in deep waters. The three last genera are restricted to Australasia. Three new species are described from the Brazilian coast: Soissu rella alexandrei, Scissurella eleotilis and Scissurella morretesi. The internal anatomy of S. alexandrei is described. These three new species have been found in littoral shallow waters, the two first on the northeast Brazilian coast, the third on the coast of the State of São Paulo. The fourth known species of Scissurellidae from Brazil, Anatoma aedonia (Watson, 1886), was dredged by H.M.S, "Challenger", in 1873, off Pernambuco, 350 fm (640 m).

Review of Madagascaran Agalliini (Hemiptera: Cicadellidae: Megophthalminae) with descriptions of a new genus and six new species

Zootaxa ◽  
2013 ◽  
Vol 3616 (1) ◽  
pp. 1-21 ◽  
Author(s):  
C. A. VIRAKTAMATH ◽  
ANA CLARA GONÇALVES
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
New Combinations ◽  
Previous Record ◽  
Terrestrial Arthropods ◽  
Three New Species ◽  
Academy Of Sciences

Studies on the Agalliini leafhoppers collected from the Terrestrial Arthropods of Madagascar inventory project of the Cal-ifornia Academy of Sciences, resulted in the discovery of one new genus Agallidwipa gen. nov. (type-species: A. biramosa sp. nov.) with three new species, A. biramosa sp. nov., A. bispinosa sp. nov. and A. webbi sp. nov. and three new species of the genus Igerna Kirkaldy, I. delta sp. nov., I. flavocosta sp. nov. and I. malagasica sp. nov. Two new combinations proposed are Agallidwipa pauliana (Evans) comb. nov. (from genus Agalliana Oman) and Igerna neosa (Webb) comb. nov. (from genus Stonasla White), a species previously recorded from Aldabra Islands. A previous record of Igerna bi-maculicollis (Stål) from Madagascar is shown most likely to be a case of misidentification. All the taxa are described and illustrated. Keys to species of Agalliini from Madagascar are included along with notes on the distinction between Agal-liana and Agallidwipa.

scholarly journals Three new species of the genus Stephos Scott, 1892 (Crustacea, Copepoda, Calanoida, Stephidae) from Jeju Island, Korea

ZooKeys ◽  
2020 ◽  
Vol 944 ◽  
pp. 1-30
Author(s):  
Seong Yong Moon ◽  
Ho Young Soh ◽  
Dae Hyun Cho
Keyword(s):  
New Species ◽  
Body Length ◽  
Ventral Surface ◽  
Jeju Island ◽  
Shallow Waters ◽  
Terminal Complex ◽  
Field Surveys ◽  
General Field ◽  
Three New Species ◽  
Female Genital

During general field surveys carried out recently to collect benthopelagic copepods from near the substrate of the shallow waters off Jeju Island, Korea, a few specimens of three new species of Stephos Scott, 1892, were collected. The new species are placed in the genus Stephos because of the following combination of features: absence of seta on the basal exite of maxillule, and male right leg 5 ending in an unarmed claw-like and/or mitten-like segment. Stephos jejuensissp. nov. can be distinguished from its congeners by body length 0.92 mm, left side of the female genital double-somite with protruding lobes, antennule that extends beyond the distal area of the genital double-somite, and the male leg 5 terminal complex. Stephos concavussp. nov. can be distinguished from its congeners by the genital double-somite with protruding lobes on both sides, and the presence of larger spinules on the distomedial margin of leg 5. Stephos fortipessp. nov. can be distinguished from its congeners by its longer body length, 1.12 mm long in the female, antennules that extend to the end of the genital double-somite, and the presence of a covered row of minute spinules on the ventral surface of the genital operculum in the female. Until now, 35 species of stephids were known worldwide.

scholarly journals The gene-rich genome of the scallop Pecten maximus

GigaScience ◽  
2020 ◽  
Vol 9 (5) ◽  
Author(s):  
Nathan J Kenny ◽  
Shane A McCarthy ◽  
Olga Dudchenko ◽  
Katherine James ◽  
Emma Betteridge ◽  
...  
Keyword(s):  
Genome Assembly ◽  
Gene Annotation ◽  
Atlantic Coast ◽  
Shallow Waters ◽  
Pharmaceutical Companies ◽  
Marine Bivalve ◽  
Pecten Maximus ◽  
Assembly Sequence ◽  
Algal Toxins ◽  
Large Numbers

Abstract Background The king scallop, Pecten maximus, is distributed in shallow waters along the Atlantic coast of Europe. It forms the basis of a valuable commercial fishery and plays a key role in coastal ecosystems and food webs. Like other filter feeding bivalves it can accumulate potent phytotoxins, to which it has evolved some immunity. The molecular origins of this immunity are of interest to evolutionary biologists, pharmaceutical companies, and fisheries management. Findings Here we report the genome assembly of this species, conducted as part of the Wellcome Sanger 25 Genomes Project. This genome was assembled from PacBio reads and scaffolded with 10X Chromium and Hi-C data. Its 3,983 scaffolds have an N50 of 44.8 Mb (longest scaffold 60.1 Mb), with 92% of the assembly sequence contained in 19 scaffolds, corresponding to the 19 chromosomes found in this species. The total assembly spans 918.3 Mb and is the best-scaffolded marine bivalve genome published to date, exhibiting 95.5% recovery of the metazoan BUSCO set. Gene annotation resulted in 67,741 gene models. Analysis of gene content revealed large numbers of gene duplicates, as previously seen in bivalves, with little gene loss, in comparison with the sequenced genomes of other marine bivalve species. Conclusions The genome assembly of P. maximus and its annotated gene set provide a high-quality platform for studies on such disparate topics as shell biomineralization, pigmentation, vision, and resistance to algal toxins. As a result of our findings we highlight the sodium channel gene Nav1, known to confer resistance to saxitoxin and tetrodotoxin, as a candidate for further studies investigating immunity to domoic acid.

New taxa of Trigonidiini (Orthoptera: Grylloidea: Trigonidiidae: Trigonidiinae) from China

Zootaxa ◽  
2019 ◽  
Vol 4619 (3) ◽  
pp. 563-570
Author(s):  
LIBIN MA ◽  
ZHAOHUI PAN
Keyword(s):  
New Species ◽  
New Taxa ◽  
New Combinations ◽  
Three New Species

Sectus gen. nov. was proposed on the basis of genitalic features. Two new combinations have resulted, Sectus peruviana (Chopard, 1956) comb. nov. and Sectus hainanensis (He et al., 2010) comb. nov. Three new species, Anaxipha nigritorquis sp. nov., Metiochodes gracilus sp. nov. and Sectus integrum sp. nov., are described and illustrated. 

Sycacantha Diakonoff, 1959 from China, with the descriptions of three new species (Lepidoptera: Tortricidae: Olethreutinae)

Zootaxa ◽  
2019 ◽  
Vol 4691 (3) ◽  
pp. 201-214
Author(s):  
WEIXING FENG ◽  
JIALIANG ZHUANG ◽  
HAILI YU
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
New Combinations ◽  
Dna Barcodes ◽  
Three New Species

Nine species of Sycacantha Diakonoff, 1959 are recorded from China. Among them, three are described as new: S. typicusivalva, sp. nov., S. camerata, sp. nov., and S. decursiva, sp. nov. Two new combinations are proposed based on DNA barcodes and characters of the male genitalia: S. diserta (Meyrick, 1909), comb. nov., and Phaecasiophora obtundana (Kuznetzov, 1988), comb. nov. Sycacantha complicitana (Walker, 1863) and S. catharia Diakonoff, 1973 are newly recorded from China. Photographs of adults and genitalia of the new species and new combinations are provided, and a key to the species based on genitalia is given. 

scholarly journals Allorestricted cytotoxic T cells. Large numbers of allo-H-2Kb-restricted antihapten and antiviral cytotoxic T cell populations clonally develop in vitro from murine splenic precursor T cells.

1985 ◽  
Vol 162 (2) ◽  
pp. 592-606 ◽  
Author(s):  
J Reimann ◽  
D Kabelitz ◽  
K Heeg ◽  
H Wagner
Keyword(s):  
T Cells ◽  
High Probability ◽  
Cytotoxic T Lymphocyte ◽  
Cytotoxic T Cells ◽  
Large Fraction ◽  
Cytotoxic T Cell ◽  
Wild Type ◽  
Large Numbers ◽  
Simplex Virus

Cytotoxic T lymphocyte (CTL) responses of splenic T cells from C57BL/6 B6) mice and mutant H-2Kbm1 (bm1) mice to haptenic (trinitrophenyl [TNP] ) and herpes simplex virus (HSV) determinants in the context of an allogenic (wild-type or mutant) H-2Kb molecule were analyzed in a modified limiting dilution system. In the B6-anti-bm1TNP mixed leukocyte reaction (MLR), estimated frequencies for precursors of CTL clones that lysed bm1TNP targets ranged from 1/120 to 1/400; in the bm1-anti-B6TNP MLR, estimated frequencies of precursors of CTL clones that lysed B6TNP targets ranged from 1/500 to 1/1,300. Estimated frequencies for precursors of CTL clones that lysed the respective unmodified and TNP-modified allogeneic targets were two- to three-fold lower. Lytic specificity patterns determined by split-well analysis showed that at least 20-30% of the generated CTL populations (selected for a high probability of clonality) in both MLR displayed allorestricted lysis of TNP-modified concanavalin A blast targets. In the B6-anti-bm1HSV MLR, estimated frequencies for precursors of CTL clones that lysed bm1HSV targets ranged from 1/70 to 1/300; in the bm1-anti-B6HSV MLR, estimated frequencies for precursors of CTL clones that lysed B6HSV targets ranged from 1/300 to 1/1,200. Again, estimated frequencies for precursors of CTL clones that lysed the respective noninfected and virus-infected allogeneic targets were two- to fourfold lower. Of the CTL populations selected for a high probability of clonality at least 30-60% displayed allorestricted lysis of virus-infected lipopolysaccharide blast targets in both MLR. It is concluded that a large fraction of clonally developing CTL populations stimulated with TNP-modified or HSV-infected allo-H-2Kb-bearing cells displayed an allorestricted pattern of recognition. It was further evident that the estimated frequencies of splenic precursors that generated allorestricted CTL clones was two- to threefold higher than the estimated frequencies of precursors that gave rise to the respective alloreactive CTL populations.

New species and new combinations in the lichen genera Fissurina and Hemithecium from India

2012 ◽  
Vol 44 (3) ◽  
pp. 339-362 ◽  
Author(s):  
Bharati O. SHARMA ◽  
Pradnya KHADILKAR ◽  
Urmila MAKHIJA
Keyword(s):  
New Species ◽  
New Combinations ◽  
Additional Species ◽  
Three New Species ◽  
First Time

AbstractIn continuation of our ongoing revisionary studies on the lichen family Graphidaceae from India, a treatment of 25 species of the lichen genera Fissurina and Hemithecium from India is presented. In our earlier work on the lichen genus Fissurina, 16 species were reported from India. In the present study, 17 additional species of Fissurina from India are recognized. Nine species, viz. Fissurina andamanensis, F. disposita, F. immersa, F. indica, F. microcarpa, F. nicobarensis, F. simplex, F. sporolata, and F. submonospora, are described as new to science. Seven species, viz. Fissurina canlaonensis, F. cingalina, F. comparimuralis, F. monospora, F. nitidescens, F. rubiginosa, and F. subnitidula, are recorded for the first time from India. One species, Fissurina sp. 1, is recorded but not formally described as new due to scanty material. Eight species in the lichen genus Hemithecium, including three new species, viz. H. kodayarense, H. longilirellatum, H. verrucosum, and five new combinations, viz. Hemithecium andamanicum, H. flabillatum, H. flavoalbum, H. flexile, and H. norlabiatum, are also recognized in the present work. A revised key for the identification of all 33 species of Fissurina and 26 species of Hemithecium so far known from India is provided.

Three new species of the Harnischia complex from the Sino-Indian Region,with a review of Demicryptochironomus Lenz (Diptera: Chironomidae)

Zootaxa ◽  
2008 ◽  
Vol 1968 (1) ◽  
pp. 1-22 ◽  
Author(s):  
CHUNCAI YAN ◽  
OLE A. SÆTHER ◽  
ZHAOHUI JIN ◽  
XINHUA WANG
Keyword(s):  
New Species ◽  
Junior Synonym ◽  
Indian Region ◽  
Type Material ◽  
New Combinations ◽  
Three New Species

Three new species, Demicryptochironomus (Irmakia) retusus, Microchironomus brochus, and Parachironomus lobus are described and figured as males. Demicryptochironomus (Demicryptochironomus) asamaprimus Sasa et Hirabayashi, D. (D.) chuzequartus Sasa, D. (D.) ginzancedeus Sasa et Suzuki, D. (D.) uresicarinus Sasa, and Demicryptochironomus clarilatus (Guha et Chaudhuri) are re-examined based on type material. Cryptotendipes inawabeceus Sasa, Kitami et Suzuki, C. tamacutus Sasa and Parachironomus harunasecundus Sasa are transferred to Demicryptochironomus as new combinations. Parachironomus inageheus Sasa, Kitami et Suzuki is placed as a junior synonym of Demicryptochironomus ginzancedeus Sasa et Suzuki. The relationships of some genera within the Harnischia complex are discussed. A key to the males of Demicryptochironomus is presented.

Huangilene, a new genus for the Miltochrista alikangiae (Strand, 1917) species-group, with descriptions of three new species from Indochina, continental China and Taiwan (Lepidoptera: Erebidae: Arctiinae: Lithosiini)

Zootaxa ◽  
2020 ◽  
Vol 4869 (1) ◽  
pp. 91-111
Author(s):  
ANTON V. VOLYNKIN ◽  
KAREL ČERNÝ
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Species Group ◽  
Type Locality ◽  
New Combinations ◽  
Species Type ◽  
Three New Species

The new genus Huangilene Volynkin & Černý, gen. n. is erected for the Miltochrista alikangiae (Strand, 1917) species-group with Lyclene kepica Dubatolov & Bucsek, 2013 as the type species. Three new species are described: H. odontotilepida Volynkin & Černý, sp. n. (Thailand, Cambodia, Laos), H. kutzscheri Volynkin & Černý, sp. n. (continental China and Taiwan Isl.) and H. apoklinousa Volynkin & Černý, sp. n. (Vietnam). Four new combinations are established: Huangilene kepica (Dubatolov & Bucsek, 2013), comb. n., H. pseudolutara (N. Singh & Kirti, 2016), comb. n., H. alikangiae alikangiae (Strand, 1917), comb. n. H. alikangiae intermedia (Marumo, 1923), comb. n. The lectotype is designated for Asura obsoleta Form alikangiae Strand, 1917, the species’ type locality is fixed as “Karapin” (Taiwan, Chiayi County, Chaoliping). 

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