The Idoteidae (Crustacea: Isopoda: Valvifera) of the shallow waters of the northeastern North Pacific Ocean

1990 ◽  
Vol 68 (12) ◽  
pp. 2649-2687 ◽  
Author(s):  
F. Rafi ◽  
Diana R. Laubitz
Keyword(s):  
North Pacific ◽  
North Pacific Ocean ◽  
Morphological Characters ◽  
Generic Level ◽  
Additional Species ◽  
The Family ◽  
Juan De Fuca ◽  
The Status ◽  
Juan De Fuca Strait ◽  
Systematic Importance

The distribution of the northeastern North Pacific Idoteidae reflects the general eurytopy in the shallow marine environment of the component species. The family is represented by four genera and 20 species in the region between Juan de Fuca Strait, Washington, and Prince William Sound, Alaska. Collections studied from this area contained 16 species of idoteids, of which 3 (Idotea (Pentidotea) recta, Synidotea cornuta, and S. minuta) are new; the new species are fully illustrated and described. The status of nine additional species recorded in the literature from the area is discussed, and four of them are diagnosed and included in the keys. The morphological characters of the four genera were examined in detail and their systematic importance is discussed. All the appendages surveyed showed differences at least at the generic level.

LAMPRITREMA NIPPONICUM YAMAGUTI (TREMATODA) FROM NEW HOSTS IN THE NORTH PACIFIC OCEAN, THE RELATIONSHIP OF DISTOMUM MIESCHERI ZSCHOKKE, AND THE STATUS OF THE FAMILY LAMPRITREMATIDAE

1962 ◽  
Vol 40 (5) ◽  
pp. 941-950
Author(s):  
L. Margolis
Keyword(s):  
North Pacific ◽  
North Pacific Ocean ◽  
Oncorhynchus Gorbuscha ◽  
The North ◽  
The Family ◽  
The Status ◽  
New Hosts ◽  
Relationship Of ◽  
The Relationship ◽  
The North Pacific

Lampritrema nipponicum is recorded from three new hosts in the North Pacific: Brama rayi (Bloch), Oncorhynchus nerka (Walbaum), and Oncorhynchus gorbuscha (Walbaum). Only immature specimens were found in the last two (evidently accidental) hosts. Distomum miescheri Zschokke is transferred to Lampritrema, becoming Lampritrema miescheri (Zschokke) nov. comb. This species possibly is identical with L. nipponicum. Lampritrematidae is considered a valid family, distinct from Hemiuridae sensu lato.

Morphological phylogeny of the family Actinostolidae (Anthozoa:Actiniaria) with description of a new genus and species of hydrothermal vent sea anemone redefining the family Actinoscyphiidae

2008 ◽  
Vol 22 (4) ◽  
pp. 439 ◽  
Author(s):  
Estefanía Rodríguez ◽  
Christopher N. Castorani ◽  
Marymegan Daly
Keyword(s):  
North Pacific ◽  
Hydrothermal Vent ◽  
New Genus ◽  
North Pacific Ocean ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Sea Anemone ◽  
Morphological Evidence ◽  
New Genus And Species ◽  
The Family

We describe a new genus and species of hydrothermal vent sea anemone from the eastern north Pacific Ocean. The combination of characters in Alvinactis reu, gen. et sp. nov. is unique among currently known genera of the actiniarian superfamily Mesomyaria; most notable among its external features is a belt of verrucae and cinclides in the distal column. We assess the placement of Alvinactis, gen. nov. and evaluate taxonomic features used to distinguish groups within Actinostolidae Carlgren, 1893 and Actinoscyphiidae Stephenson, 1920 with a cladistic analysis of morphological characters. Phylogenetic analysis reveals that Alvinactis, gen. nov. and several genera previously ascribed to Actinostolidae belong in Actinoscyphiidae. Morphological evidence fails to support monophyly of Actinostolidae, but does support monophyly of the previously proposed subfamily Actinostolinae.

scholarly journals A taxonomic revision of the family Harrimaniidae (Hemichordata: Enteropneusta) with descriptions of seven species from the Eastern Pacific

Zootaxa ◽  
2010 ◽  
Vol 2408 (1) ◽  
pp. 1 ◽  
Author(s):  
C. DELAND ◽  
C. B. CAMERON ◽  
K. P. RAO ◽  
W. E. RITTER ◽  
T. H. BULLOCK
Keyword(s):  
New Species ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Eastern Pacific ◽  
Nomen Nudum ◽  
Phylogenetic Hypothesis ◽  
Number Of Species ◽  
Dichotomous Key ◽  
The Family ◽  
The Status

The family Harrimaniidae (Hemichordata: Enteropneusta) is revised on the basis of morphological characters. The number of harrimaniid genera is increased to nine by the addition of Horstia n. gen., Mesoglossus n. gen., Ritteria n. gen. and Saxipendium, a genus previously assigned to the monospecific family Saxipendiidae. The number of species is increased to 34, resulting from the description of five new species from the eastern Pacific — Horstia kincaidi, Mesoglossus intermedius, M. macginitiei, Protoglossus mackiei and Ritteria ambigua. A description is supplied for a sixth harrimaniid species, Stereobalanus willeyi Ritter & Davis, 1904, which previously had the status of a nomen nudum. Four harrimaniids previously assigned to the genus Saccoglossus are transfered to the genus Mesoglossus — M. bournei, M. caraibicus, M. gurneyi and M. pygmaeus, while Saccoglossus borealis is reassigned to the genus Harrimania. Notes on habitat and zoogeography are included for the seven foregoing species and a table of diagnostic characters for existing and new species and a dichotomous key to the enteropneust families and harrimaniid genera are provided. Finally, a phylogenetic hypothesis concerning the Harrimaniidae is postulated, with discussion on the evolution of the group.

scholarly journals Draft Genome Sequence of Rubricoccus marinus SG-29T, a Marine Bacterium within the Family Rhodothermaceae, Which Contains Two Different Rhodopsin Genes

2017 ◽  
Vol 5 (38) ◽  
Author(s):  
Yu Nakajima ◽  
Susumu Yoshizawa ◽  
Sanghwa Park ◽  
Yohei Kumagai ◽  
Shu-Kuan Wong ◽  
...  
Keyword(s):  
Genome Sequence ◽  
North Pacific ◽  
Western North Pacific ◽  
Marine Bacterium ◽  
North Pacific Ocean ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Content Type ◽  
The Family ◽  
Different Types

ABSTRACT Here, we report the draft genome sequence of Rubricoccus marinus SG-29T, a bacterium isolated from the western North Pacific Ocean. R. marinus SG-29T possesses two different types of rhodopsin genes and belongs to the family Rhodothermaceae, with which halophilic, thermophilic, and marine bacteria are associated.

PHYLOGENETIC ANALYSIS OF THE AMPHIPOD FAMILY BOGIDIELLIDAE S. LAT., AND REVISION OF TAXA ABOVE THE SPECIES LEVEL

Crustaceana ◽  
1999 ◽  
Vol 72 (8) ◽  
pp. 781-816 ◽  
Author(s):  
Stefan Koenemann ◽  
John Holsinger
Keyword(s):  
Cladistic Analysis ◽  
Species Level ◽  
Taxonomic Structure ◽  
New Genera ◽  
Generic Level ◽  
The Family ◽  
Considerable Confusion ◽  
The Status ◽  
Group A

AbstractThe increasing number of world-wide discoveries of subterranean amphipods, especially during the last two decades, has led to additions of numerous new taxa in the stygobiont family Bogidiellidae s. lat. To date, the family is composed of 23 genera and 11 subgenera, and approximately 110 described species. However, given the uneven quality of generic and subgeneric diagnoses in the literature, there is considerable confusion regarding the status of some of the taxa at these levels. Even the family itself lacks a clear definition. In order to gain a better knowledge of the phylogeny of this group, a cladistic analysis, employing both PAUP 3.0s and MacClade, was performed on the genera and subgenera currently assigned to the Bogidiellidae s. lat. Supported by the results of this analysis, the taxonomic structure of this group is completely revised above the species level. The revision excludes 5 genera from the family, all remaining subgenera are elevated to generic level. Four taxa are split, resulting in 5 new genera. The family Bogidiellidae now consists of 33 genera. Die wachsende Zahl weltweiter Neuentdeckungen von Grundwasser-Amphipoden, insbesondere wahrend der letzten zwei Jahrzehnte, erweiterte die Stygobiontenfamilie Bogidiellidae s. lat., um zahlreiche neue Taxa. Bis heute sind in der Familie etwa 110 beschriebene Arten in 23 Gattungen und 11 Untergattungen zusammengefasst. Aufgrund der unterschiedlichen Qualitat diagnostischer Beschreibungen herrscht allerdings erhebliche Verwirrung hinsichtlich des taxonomischen Status einiger Gruppen. Sogar die Definition der Familie selbst ist relativ undeutlich. Um neue Einsichten in die Phylogenie der Bogidielliden s. lat., zu erhalten, fuhrten wir eine kladistische Analyse der Gattungen und Untergattungen unter Verwendung der Computerprogramme PAUP 3.0s und MacClade durch. Die Resultate dieser Analyse dienten als hilfreiche Erganzung bei der umfassenden taxonomischen Revision der Gattungen und Untergattungen. Funf Gattungen wurden aus der Familie entfernt und alle Untergattungen zu Gattungen erhoben. Das Aufspalten von vier Taxa resultierte in 5 neuen Gattungen. Die Familie Bogidiellidae besteht somit aus 33 Gattungen.

Sperm masses and sperm transfer in a vestimentiferan, Ridgeia piscesae Jones, 1985 (Pogonophora: Obturata)

1989 ◽  
Vol 67 (11) ◽  
pp. 2776-2781 ◽  
Author(s):  
Eve C. Southward ◽  
Kathryn A. Coates
Keyword(s):  
North Pacific ◽  
Hydrothermal Vent ◽  
North Pacific Ocean ◽  
Maximum Dimension ◽  
Ridgeia Piscesae ◽  
Tube Worms ◽  
Juan De Fuca ◽  
Males And Females ◽  
The Masses ◽  
Vent Tube

Discrete sperm masses, of irregular outline, 2–5 mm in their maximum dimension, were found on males and females of Ridgeia piscesae Jones, 1985 (Pogonophora: Obturata), hydrothermal vent tube worms from the Juan de Fuca and Explorer Ridges in the eastern North Pacific Ocean. Masses were found in tentacular and vestimental locations, often near the gonopores. The fine structure and size of spermatozoa from inside males are the same as in the masses and are distinctly different from described spermatozoa of perviate pogonophores. Maturation of the spermatozoa appears to be completed within the external sperm mass, after spawning. The sperm masses produced by males may be actively transferred to adjacent females of the densely aggregated animals found at the vent sites. In the females, these masses come to rest near the gonopores where fertilization may occur, just internal or external to the pores.

Platypodidae under scrutiny

2000 ◽  
Vol 14 (6) ◽  
pp. 771 ◽  
Author(s):  
Guillermo Kuschel ◽  
Richard A. B. Leschen ◽  
Elwood C. Zimmerman
Keyword(s):  
Type Species ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Single Step ◽  
Phylogenetic Study ◽  
The Family ◽  
The Status

The historical status of the family Platypodidae is reviewed and the family is revised. Results of a cladistic analysis based on 35 terminal taxa and 80 adult morphological characters show that the current placement of Platypodidae makes the subfamily Scolytinae paraphyletic. Moreover, several important genera included in Scolytinae are shown to be members of Cossoninae (i.e. the placement of Protoplatypus Wood and Phylloplatypus Kato in Cossoninae is confirmed). Based on these results, the status of Platypodidae as a family and subfamily is rejected, Scolytinae thereby becoming a monophyletic taxon. Araucarius groups in Scolytinae instead of Cossoninae in the analysis on a single step only, but it is suggested that it be retained in Cossoninae until this subfamily is submitted to a similar phylogenetic study. Three genera and four species of Cossoninae are described as new: Dobionus Kuschel, gen. nov.: type species D. araucarinus Kuschel, sp. nov. (with the inclusion of D. brachyrhinus (Montrouzier)); Coptonus Kuschel, gen. nov.: type species C. fijianus Kuschel, sp. nov. (with the inclusion of C. papuanus Kuschel, sp. nov.) and Dissostomus Kuschel, gen. nov.: type species D. hornabrooki Kuschel, sp. nov.

Another one bites the dust: taxonomic sampling of a key genus in phylogenomic datasets reveals more non-monophyletic groups in traditional scorpion classification

2020 ◽  
Vol 34 (2) ◽  
pp. 133
Author(s):  
Carlos E. Santibáñez-López ◽  
Andrés A. Ojanguren-Affilastro ◽  
Prashant P. Sharma
Keyword(s):  
Gene Tree ◽  
Sister Group ◽  
Morphological Characters ◽  
Incertae Sedis ◽  
Transcriptomic Sequencing ◽  
The Family ◽  
The Status ◽  
Significant Gene ◽  
Phylogenomic Analyses ◽  
Likelihood Mapping

Historically, morphological characters have been used to support the monophyly, composition, and phylogenetic relationships of scorpion families. Although recent phylogenomic analyses have recovered most of these traditional higher-level relationships as non-monophyletic, certain key taxa have yet to be sampled using a phylogenomic approach. Salient among these is the monotypic genus Caraboctonus Pocock,1893, the type species of the family Caraboctonidae Kraepelin, 1905. Here, we examined the putative monophyly and phylogenetic placement of this family, sampling the library of C. keyserlingi Pocock, 1893 using high throughput transcriptomic sequencing. Our phylogenomic analyses recovered Caraboctonidae as polyphyletic due to the distant placement of the genera Caraboctonus and Hadrurus Thorell, 1876. Caraboctonus was stably recovered as the sister-group of the monotypic family Superstitioniidae Stahnke, 1940, whereas Hadrurus formed an unstable relationship with Uroctonus Thorell, 1876and Belisarius Simon, 1879. Four-cluster likelihood mapping revealed that the instability inherent to the placement of Hadrurus, Uroctonus and Belisarius was attributable to significant gene tree conflict in the internodes corresponding to their divergences. To redress the polyphyly of Caraboctonidae, the following systematic actions have been taken: (1) the family Caraboctonidae has been delimited to consist of 23 species in the genera Caraboctonus and Hadruroides Pocock, 1893; (2) Caraboctonidae, previously included in the superfamily Iuroidea Thorell, 1876 or as incertae sedis, is transferred to the superfamily Caraboctonoidea (new rank); (3) the superfamily Hadruroidea (new rank) is established and the status of Hadrurinae Stahnke, 1973 is elevated to family (Hadruridae new status) including 9 species in the genera Hadrurus and Hoffmannihadrurus Fet & Soleglad, 2004 and (4) we treat Uroctonus and Belisarius as insertae sedis with respect to superfamilial placement. Our systematic actions engender the monophyly of both Iuroidea and Caraboctonidae. Future phylogenomic investigations should target similar taxon-poor and understudied lineages of potential phylogenetic significance, which are anticipated to reveal additional non-monophyletic groups.

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