Allozyme evidence for a new species of freshwater crayfish of the genus Cherax Erichson (Decapoda : Parastacidae) from the south-west of Western Australia

2002 ◽  
Vol 16 (3) ◽  
pp. 357 ◽  
Author(s):  
C. M. Austin ◽  
S. G. Ryan
Keyword(s):  
New Species ◽  
River System ◽  
Original Description ◽  
Distinct Species ◽  
Freshwater Crayfish ◽  
Allozyme Data ◽  
Genetic Studies ◽  
South West ◽  
The Common ◽  
A New Species

The marron, Cherax tenuimanus (Smith), is one of the most easily recognisable members of the freshwater crayfish genus Cherax. Since its description in 1912, the taxonomy of the species has not been in dispute, but recent genetic studies have demonstrated that the species is not homogenous and consists of two genetically distinct forms. One of these forms is widespread and exploited via aquaculture and the other is restricted to a single river system, the Margaret River. This paper presents allozyme data, collected over a 19-year period, which documents the introduction of the widespread form into the Margaret River and the subsequent reproductive interactions between the two forms. These data indicate minimal interbreeding between the two forms of marron and so justify their recognition as distinct species. As the original description of the marron was based on specimens collected from the Margaret River, the form native to this river retains the name C. tenuimanus and a new species, Cherax cainii Austin is described for the common, widespread form of marron. An additional outcome of this study is that C. tenuimanus has been rapidly displaced by the introduced C. cainii within the Margaret River. Consequently, urgent conservation measures are required to protect C. tenuimanus and prevent its possible extinction.

A New Species of Alniphagus (Col. Scolytidae) from Canada

1949 ◽  
Vol 81 (9) ◽  
pp. 235-235 ◽  
Author(s):  
Karl E. Schedl
Keyword(s):  
British Columbia ◽  
New Species ◽  
North American ◽  
Bark Beetles ◽  
Far East ◽  
Distinct Species ◽  
Common Species ◽  
The Far East ◽  
The Common ◽  
A New Species

Checking some North American genera of bark-beetles I found a series of Alniphagus Sw. which does not agree with the common species Alniphagus aspericollis from California and British Columbia and doubtless represents a new species. The genus therefore comprises now three distinct species, Alniphagus alni Nijs. from Japan and the Far East, A. aspericollis from British Columbia down to California and the new species A. hirsutus from Alnus sitchensis in B.C.

Pseudomonas schmalbachii sp. nov., isolated from the gut of a millipede (Trigoniulus corallinus) from a coconut tree

2021 ◽  
Vol 71 (10) ◽  
Author(s):  
Matan Shelomi ◽  
Wen-Ming Chen ◽  
Hsin-Kuang Chen ◽  
Hsin-Ying Lee ◽  
Chiu-Chung Young ◽  
...  
Keyword(s):  
New Species ◽  
Type Species ◽  
Acid Methyl Ester ◽  
Distinct Species ◽  
Content Type ◽  
Link Type ◽  
Coconut Tree ◽  
The Common ◽  
Type Strains ◽  
A New Species

During an investigation of microbes associated with arthropods living in decaying coconut trees, a Pseudomonas isolate, Milli4T, was cultured from the digestive tract of the common Asian millipede, Trigoniulus corallinus. Sequence analysis of 16S rRNA and rpoB genes found that Milli4T was closely related but not identical to Pseudomonas panipatensis Esp-1T, Pseudomonas knackmussi B13T and Pseudomonas humi CCA1T. Whole genome sequencing suggested that this isolate represents a new species, with average nucleotide identity (OrthoANIu) values of around 83.9–87.7% with its closest relatives. Genome-to-genome distance calculations between Milli4T and its closest relatives also suggested they are distinct species. The genomic DNA G+C content of Milli4T was approximately 65.0 mol%. Phenotypic and chemotaxonomic characterization and fatty acid methyl ester analysis was performed on Milli4T and its related type strains. Based on these data, the new species Pseudomonas schmalbachii sp. nov. is proposed, and the type strain is Milli4T (=BCRC 81294T=JCM 34414T=CIP 111980T).

scholarly journals A new species of Gymnelus (Perciformes, Zoarcidae) from Greenland, similar to G. viridis

2021 ◽  
Vol 325 (1) ◽  
pp. 34-48
Author(s):  
N.V. Chernova ◽  
P.R. Møller
Keyword(s):  
New Species ◽  
North Pacific Ocean ◽  
Original Description ◽  
The Body ◽  
The Arctic ◽  
West Greenland ◽  
Pectoral Fins ◽  
Dorsal Fin ◽  
South West ◽  
A New Species

Zoarcid fishes of the genus Gymnelus Reinhardt inhabit the shelves of the North Pacific Ocean and the Arctic. A new species, G. pseudosquamatus sp. nov., is described from trawl samples taken at depths off South-West Greenland. It is most similar to the type species of the genus, Common Fish Doctor G. viridis, inhabiting the coastal waters of Greenland. The characters of the latter are specified on materials from the type locality, including the neotype and specimens of J.C.H. Reinhardt. Both species are in the group of Gymnelus with an interrupted supratemporal commissura, two supratemporal sensory pores (1+0+1), and a dorsal fin originating above the pectoral fin. The two species differ in a complex of characters, including habitus. In G. viridis, the trunk is roundish in cross section, highest above the beginning of the anal fin; the anterior rays of the dorsal fin are shortened, and covered with a thick and somewhat fleshy skin. In G. pseudosquamatus, the body is compressed and deeper anteriorly, the dorsal-fin rays are evenly elongated, and the fin membrane is thin. Differences in counts and measurements are statistically significant, including the number of vertebrae and rays in the dorsal, anal and pectoral fins, the number of teeth on the jaws, as well as the length and depth of the head, predorsal length, the length of pectoral fins, eye diameter and length of the gill slit. The color of G. pseudosquamatus, with 8–16 wide brown mottled bands, is also unusual, as the skin is dotted with light speckles that create the illusion of tiny scales, which is the reason for the name “pseudosquamatus”, the Deceptive Fish Doctor. While G. viridis is found inshore in a zone of macroalgae, the new species is found in deeper waters (100–457 m) along the shelf edge of South-West Greenland. The name Ophidium stigma Lay et Bennett, 1839 (=Gymnelus stigma) should be excluded from the synonymy of G. viridis, since the original description mentions the presence of scales on the body, which are absent in Gymnelus.

scholarly journals On the bicoecidae: a family of colourless flagellates

1941 ◽  
Vol 230 (575) ◽  
pp. 451-473 ◽  
Keyword(s):  
New Species ◽  
Original Description ◽  
Distinct Species ◽  
The Other ◽  
The One ◽  
To Receive ◽  
A New Species

Two distinct species appear to have been confused by James-Clark in his original description of Bicoeca lacustris . The two forms have been re-examined and photographed. It is suggested that the differences between them justify their separation into two species, as suggested by Stoic, the one form to retain the name B. lacustris , the other to receive that of B. vacillans Stoic. A new species, B. maris , is described, and the affinities of the Bicoecidae, Bodonidae and Craspedomonadidae are discussed.

The Leptobrachium (Anura: Megophryidae) of the Langbian Plateau, southern Vietnam, with description of a new species

Zootaxa ◽  
2011 ◽  
Vol 2804 (1) ◽  
pp. 25 ◽  
Author(s):  
BRYAN L. STUART ◽  
JODI J. L. ROWLEY ◽  
DAO THI ANH TRAN ◽  
DUONG THI THUY LE ◽  
HUY DUC HOANG
Keyword(s):  
Mitochondrial Dna ◽  
New Species ◽  
Small Body ◽  
Original Description ◽  
The Other ◽  
Sexually Active ◽  
Small Body Size ◽  
Upper Lip ◽  
Southern Vietnam ◽  
A New Species

We sampled two forms of Leptobrachium in syntopy at the type locality of L. pullum at upper elevations on the Langbian Plateau, southern Vietnam. The two forms differed in morphology (primarily in coloration), mitochondrial DNA, and male advertisement calls. One form closely agrees with the type series of L. pullum (but not to its original description due to error), and the other is described as new. Leptobrachium leucops sp. nov. is distinguished from its congeners by having small body size (males with SVL 38.8–45.2), the upper one-third to one-half of iris white, a blue scleral arc, a dark venter, and sexually active males without spines on the upper lip. Leptobrachium pullum and L. mouhoti, a recently described species from low-elevation slopes of the Langbian Plateau in eastern Cambodia, are morphologically divergent but genetically similar, warranting further investigation into geographic variation in the red-eyed Leptobrachium of southern Indochina.

Marine tube-dwelling diatoms of eastern Canada: descriptions, checklist, and illustrated key

1984 ◽  
Vol 62 (4) ◽  
pp. 778-794 ◽  
Author(s):  
Christopher S. Lobban
Keyword(s):  
New Species ◽  
Northwest Territories ◽  
Common Species ◽  
Bay Of Fundy ◽  
Eastern Canada ◽  
Lawrence Estuary ◽  
The Common ◽  
Living Material ◽  
St Lawrence Estuary ◽  
A New Species

From a study of living materials and specimens in several regional herbaria, a list has been drawn up of all the common and several of the rarer tube-dwelling diatoms of eastern Canada. Descriptions, illustrations of living material and acid-cleaned valves, and a key to the species are provided. Most specimens were from the Atlantic Provinces and the St. Lawrence estuary, but a few were from the Northwest Territories. By far the most common species is Berkeleya rutilans. Other species occurring commonly in the Quoddy Region of the Bay of Fundy, and sporadically in space and time elsewhere, arc Navicula delognei (two forms), Nav. pseudocomoides, Nav. smithii, Haslea crucigera, and a new species, Nav.rusticensis. Navicula ramosissima and Nav. mollis in eastern Canada are usually found as scattered cohabitants in tubes of other species. Nitzschia tubicola and Nz. fontifuga also occur sporadically as cohabitants.

scholarly journals Multigene phylogeny and morphology reveal Phaeobotryon rhois sp. nov. (Botryosphaeriales, Ascomycota)

Phytotaxa ◽  
2015 ◽  
Vol 205 (2) ◽  
pp. 90 ◽  
Author(s):  
XIN-LEI FAN ◽  
KEVIN D. HYDE ◽  
JIAN-KUI LIU ◽  
YING-MEI LIANG ◽  
CHENG-MING TIAN
Keyword(s):  
New Species ◽  
Distinct Species ◽  
Similar Species ◽  
Multigene Phylogeny ◽  
Fruiting Bodies ◽  
Canker Disease ◽  
Multigene Analysis ◽  
The Family ◽  
Rhus Typhina ◽  
A New Species

The family Botryosphaeriaceae encompasses important plant-associated pathogens, endophytes and saprobes with a wide geographical and host distribution. Two dark-spored botryosphaeriaceous taxa associated with Rhus typhina dieback and canker disease were collected from Ningxia Province, in northwestern China. Morphology and multigene analysis (ITS, LSU and EF-1α) clearly distinguished this clade as a distinct species in the genus. Phaeobotryon rhois is introduced and illustrated as a new species in this paper. The species is characterized by its globose, unilocular fruiting bodies and small, brown, 1-septate conidia. It can be distinguished from the similar species P. cercidis, P. cupressi, P. mamane and P. quercicola based on host association and conidial size and colour.

Corydalis nanchuanensis (Papaveraceae), a new species from Chongqing, China

Phytotaxa ◽  
2021 ◽  
Vol 510 (2) ◽  
Author(s):  
BU-YUN ZHANG ◽  
JIN-FEI XIAO ◽  
SI-RONG YI
Keyword(s):  
New Species ◽  
South China ◽  
Abaxial Side ◽  
South West ◽  
A New Species

Corydalis nanchuanensis (Papaveraceae), a new species from Nanchuan district in south-west Chongqing, China, is described and illustrated. Morphologically, the new species is similar to C. sheareri, a species mainly distributed in south China and Vietnam, in having conical corolla spurs, divided lower bracts, rounded stigmas, larger elaiosomes (usually longer than seeds), and tubers, but differs by having tapering-to-base (vs. uniformly sized) stems; entire (vs. usually crenate) leaf lobes, straight (vs. declined) pedicels in fruit, concave (vs. subacute) apices of outer petals, white (vs. usually purple) abaxial side of inner petals, and reticulate (vs. tuberculate) seeds.

The genus Arctomelon Dall, 1915 in Alaskan waters, with the description of a new species

The Festivus ◽  
2018 ◽  
Vol 50 (4) ◽  
pp. 246-263
Author(s):  
Roger Clark
Keyword(s):  
New Species ◽  
Distinct Species ◽  
Aleutian Islands ◽  
A New Species

The Volutid genus Arctomelon Dall, 1915 in Alaskan waters is examined, four species are recognized. A new species, Arctomelon borealis sp. nov. is described from bathyal depths of the central Aleutian Islands. A. stearnsii ryosukei (Habe & Ito, 1965) is recognized as a distinct species.

Sign in / Sign up

Export Citation Format

Share Document