scholarly journals Kentrophoros magnus sp. nov. (Ciliophora, Karyorelictea), a new flagship species of marine interstitial ciliates

2020 ◽  
Author(s):  
Brandon K. B. Seah ◽  
Jean-Marie Volland ◽  
Nikolaus Leisch ◽  
Thomas Schwaha ◽  
Nicole Dubilier ◽  
...  
Keyword(s):  
New Species ◽  
Developmental Stages ◽  
Symbiotic Bacteria ◽  
Close Relative ◽  
Flagship Species ◽  
Bearing Surface ◽  
Body Form ◽  
Nuclear Number ◽  
A New Species

ABSTRACTThe karyorelictean ciliate Kentrophoros lacks a defined oral apparatus but has a dense coat of symbiotic bacteria that it consumes by phagocytosis. Body size, shape, and nuclear characters are variable in this genus. We formally describe a new species, K. magnus from Elba (Italy), which has unusual folding of its symbiont-bearing surface into pouch-like compartments, a body form that we term “pseudotrophosomal”. K. magnus cells are large (2100 ± 700 × 170 ± 23 μm in vivo), but contain only one micronucleus and two macronuclei, although these are much bigger than other Kentrophoros (widths 20 ± 2.5 and 31 ± 4.0 μm respectively in K. magnus). We also present morphological observations on a close relative from Twin Cayes (Belize), which also has relatively large nuclei (micronuclei 13 ± 1.5 μm, mature macronuclei 20 ± 2.8 μm), but unlike K. magnus, it has on average 22 nuclei per cell, with different developmental stages of the macronuclei present simultaneously, and lacks pouch-like folding. Nuclear number and arrangement are important characters for karyorelicts. We suggest the use of a “nuclear formula” to simplify descriptions. Our discovery of large and morphologically distinctive new species underlines the incompleteness of our knowledge about meiofaunal ciliates.

Ultrastructural and molecular characterization of Bacillidium vesiculoformis n. sp. (Microspora: Mrazekiidae) in the freshwater oligochaete Nais simplex (Oligochaeta: Naididae)

Parasitology ◽  
2004 ◽  
Vol 130 (1) ◽  
pp. 31-40 ◽  
Author(s):  
D. J. MORRIS ◽  
R. S. TERRY ◽  
K. B. FERGUSON ◽  
J. E. SMITH ◽  
A. ADAMS
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Infected Cell ◽  
Host Cell ◽  
Developmental Stages ◽  
Parasite Development ◽  
Adhesive Quality ◽  
Transmission Studies ◽  
A New Species

The development of a new species, Bacillidium vesiculoformis n. sp. (Microspora, Mrazekiidae), is described from the freshwater oligochaete Nais simplex (Oligochaeta, Naididae). Initial stages of parasite development consist of a monokaryotic merogony within a haemocyte of the intestinal blood sinus. The resulting hypertrophied haemocyte is attached to the chloragocytes of the sinus by fine cytoplasmic extensions with the sinus around the cell becoming greatly enlarged. The meronts within the haemocyte form diplokaryotic sporonts that undergo sporogenesis directly within the cytoplasm of the host cell. The infected cell becomes packed with spores and developmental stages, causing it dramatically to increase in size, eventually rupturing the oligochaete and cell. Sporogony appears to be disporoblastic. Released spores were observed to have an adhesive quality. Transmission studies conducted with mature spores failed to transmit the parasite horizontally although vertical transmission was observed. Phylogenetic analysis of the parasite demonstrated that B. vesiculoformis clustered with microsporidian parasites of bryozoa and two other microsporidians, Janacekia debaiseuxi and an unidentified Bacillidium sp.

A new species of glass sponge (Hexactinellida: Sceptrulophora: Uncinateridae) from the Weijia Seamount in the northwestern Pacific Ocean

Zootaxa ◽  
2020 ◽  
Vol 4878 (2) ◽  
pp. 322-334
Author(s):  
CHENGCHENG SHEN ◽  
DONGSHENG ZHANG ◽  
BO LU ◽  
CHUNSHENG WANG
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
Glass Sponge ◽  
Body Form ◽  
Hexactinellid Sponge ◽  
The Family ◽  
Molecular Phylogenetic ◽  
A New Species

In this article we report on a hexactinellid sponge new to science, Tretopleura weijicus sp. nov., which was collected from the Weijia Seamount in the northwestern Pacific Ocean at a depth of 1995 m. Its blade-like and branching body form, the primary choanosomal framework consisting of multiaxial longitudinal strands without synapticula, and the presence of sceptrules suggest placement within the family Uncinateridae Reiswig, 2002, which is also supported by molecular phylogenetic evidence from COI and 16S sequences. The absence of swollen dermal spurs or regular pentactins and the presence of two types of discohexasters characterize it as a new species. More specimens should be collected to revise the generic characters.

scholarly journals Morphological and molecular data reveal a new species of Allium (Amaryllidaceae) from SW Anatolia, Turkey

Phytotaxa ◽  
2015 ◽  
Vol 212 (4) ◽  
pp. 283 ◽  
Author(s):  
İsmail Gökhan Deniz ◽  
İlker Genç ◽  
Duygu Sarı
Keyword(s):  
New Species ◽  
Phylogenetic Tree ◽  
Molecular Data ◽  
Close Relative ◽  
Western Region ◽  
Distribution Map ◽  
Tree Distribution ◽  
Morphological Differences ◽  
Morphological And Molecular Data ◽  
A New Species

Allium undulatitepalum (Amaryllidaceae) is described as a new species from the Antalya Province of Turkey. It belongs to the section Melanocrommyum and is endemic to the south-western region of Turkey. The new species is a close relative of A. orientale, but according to results of the ITS sequences, and based on the morphological differences presented in the description, it is clearly different from its relative. A phylogenetic tree, distribution map, illustrations, pollen and seed microphotographs, karyo-morphology, as well as notes on the biogeography and ecology of the new species are provided.

Halichondriidae Gray, 1867 from the Northeastern Brazil with description of a new species

Zootaxa ◽  
2018 ◽  
Vol 4379 (4) ◽  
pp. 556 ◽  
Author(s):  
GEORGE GARCIA SANTOS ◽  
ELIELTON NASCIMENTO ◽  
ULISSES PINHEIRO
Keyword(s):  
New Species ◽  
Northeastern Brazil ◽  
Taxonomic Study ◽  
Dark Green ◽  
A New Species ◽  
Northeastern Coast

In this paper we report and describe material of Halichondriidae sampled at 11 different stations in the Brazilian northeastern coast. Halichondria (Halichondria) marianae sp. nov. is a massively encrusting sponge, with firm texture, soft, fleshy, but compact and compressible. Color in vivo is dark green, becoming grayish or brown after fixation in ethanol; the spicules are smooth oxeas. Amorphinopsis atlantica from the Northeastern Brazil is thickly encrusting to massively, also with firm texture, color in vivo is usually yellow to dark green and both distributed in different regions, brownish after fixation in ethanol; the spicules are smooth oxeas and styles. A taxonomic study of these samples is given, including description and illustrations. 

Petalidium kaokoense (Acanthaceae), a new species from Namibia

Phytotaxa ◽  
2020 ◽  
Vol 468 (3) ◽  
pp. 236-242
Author(s):  
WESSEL SWANEPOEL
Keyword(s):  
New Species ◽  
Lower Lobe ◽  
Iucn Red List ◽  
Red List ◽  
Close Relative ◽  
Conservation Assessment ◽  
Iucn Red List Categories ◽  
Red List Categories ◽  
Bark Peeling ◽  
A New Species

Petalidium kaokoense, here described as a new species, is only known from the Hartmann Mountains and one other location on the inland plateau in the Kaokoveld Centre of Endemism, northwestern Namibia, where it grows on hillsides and mountain slopes. Diagnostic characters for P. kaokoense include the stout trunk on older plants, white bark, peeling on the younger branches in long, narrow strips, stellate trichomes, short inflorescences of racemoid dichasia with acute linear-oblanceolate or linear-lanceolate bracts, flowers with maroon corollas with the two upper lobes connate towards the base and the lower lobe with two yellow spots near the base. A comparison of some of the more prominent morphological features to differentiate between Petalidium kaokoense and its presumed close relative, the morphologically similar P. physaloides, is provided. Based on IUCN Red List categories and criteria, a conservation assessment of Vulnerable (VU D1) is recommended for the new species.

Heteropoda dagmarae sp. nov. from Laos—a close relative of Heteropoda javana (Simon 1880) from Indonesia (Arachnida: Araneae: Sparassidae)

Zootaxa ◽  
2005 ◽  
Vol 1044 (1) ◽  
pp. 17 ◽  
Author(s):  
PETER JÄGER ◽  
VINCENT VEDEL
Keyword(s):  
New Species ◽  
Species Group ◽  
Close Relative ◽  
Undescribed Species ◽  
A New Species

A new species of Heteropodinae is described from northern Laos: Heteropoda dagmarae sp. nov. From genital as well as somatic characters it seems to be closely related to Heteropoda javana (Simon 1880) from Sumatra and Java. A javana species-group is proposed within Heteropoda Latreille 1804 by means of these two species and several undescribed species.

New cave-dwelling Plakina (Plakinidae, Homoscleromorpha, Porifera) from Martinique Island (French Antilles)

Zootaxa ◽  
2020 ◽  
Vol 4729 (1) ◽  
pp. 92-104 ◽  
Author(s):  
MARIE GRENIER ◽  
CESAR RUIZ ◽  
ANAIRA LAGE ◽  
THIERRY PEREZ
Keyword(s):  
New Species ◽  
Mitochondrial Gene ◽  
Molecular Data ◽  
Integrative Taxonomy ◽  
Submarine Cave ◽  
Unique Composition ◽  
A New Species ◽  
Submarine Caves ◽  
Cox 1

Knowledge of homoscleromorph sponge biodiversity has greatly improved during the last decade thanks to the increasing use of integrative taxonomy and extensive exploration of remote ecosystems. Indeed, recently described species have mostly been small sponges living in dark and near-impenetrable habitats. This work integrates morphological, cytological, ecological and molecular data to describe a new species belonging to the Plakina genus. Plakina doudou sp. nov. was found first during close inspection of photographs taken previously in a submarine cave on Martinique Island, where several new species had already been revealed. The new species lives in syntopy with P. arletensis. It is thinly encrusting, whitish in vivo, and its skeleton harbors a unique composition of diods, triods, monolophose triods and monolophose, dilophose and trilophose calthrops. Sequencing of a portion of the mitochondrial gene cox-1 indicates that the new species belongs to a well-supported clade containing the Mediterranean P. crypta and P. trilopha. However, at the time of publication of this work, we have not yet managed to identify synapomorphies that would support the different clades of Plakina. This genus includes a total of 39 species to date, of which 10 have been recorded in the Western Tropical Atlantic, and 4 in Caribbean submarine caves. 

A new species of Atheris (Serpentes: Viperidae) from northern Mozambique

Zootaxa ◽  
2009 ◽  
Vol 2113 (1) ◽  
pp. 41-54 ◽  
Author(s):  
WILLIAM R. BRANCH ◽  
JULIAN BAYLISS
Keyword(s):  
New Species ◽  
Leaf Litter ◽  
First Record ◽  
Isolated Populations ◽  
Body Form ◽  
Total Length ◽  
Forest Remnants ◽  
High Conservation ◽  
A New Species

A new species of forest viper (Atheris Serpentes: Viperidae) is described from Mount Mabu and Mount Namuli, northern Mozambique. This is the most southerly record of the genus, and the first record from Mozambique. Features of scalation, colour, body form and behaviour distinguish the new species from all other African Atheris, particularly its small size (maximum total length 384mm), retention of juvenile colouration in adults, and relatively low ventral, subcaudal and labial scale counts. It appears to be a dwarf, possibly paedomorphic, species that feeds among leaf litter on small frogs and geckos. The discovery of the new species in isolated populations in mid-altitude forest remnants on Mount Mabu and Mount Namuli, emphasizes the high conservation importance of the region.

Hedysarum persicum (Hedysareae, Leguminosae), a new species from Talesh Mountains, Iran

Phytotaxa ◽  
2015 ◽  
Vol 234 (3) ◽  
pp. 294 ◽  
Author(s):  
Mahmoud Bidarlord ◽  
Farrokh Ggahremaninejad ◽  
Valiolla Mozafarian
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Morphological Characters ◽  
Close Relative ◽  
Northwestern Iran ◽  
A New Species

Hedysarum persicum (Hedysareae, Leguminosae) is described and illustrated as a new species from Talesh Mountains in northwestern Iran. Diagnostic morphological characters useful in discriminating the new species from its close relative H. cappadocicum are explained. Some notes are also presented on the ecology, distribution, and conservation status of the new species.

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