The genus Stevia (Eupatorieae, Asteraceae) in Chile: a taxonomical and morphological analysis

Phytotaxa ◽  
2016 ◽  
Vol 282 (1) ◽  
pp. 1 ◽  
Author(s):  
DIEGO G. GUTIÉRREZ ◽  
MÉLICA MUÑOZ-SCHICK ◽  
MARIANA A. GROSSI ◽  
JUAN F. RODRÍGUEZ-CRAVERO ◽  
VANEZZA MORALES ◽  
...  
Keyword(s):  
Morphological Variation ◽  
Morphological Analysis ◽  
The Other ◽  
Field Observations ◽  
Type Specimens ◽  
Number Of Species ◽  
Other Hand ◽  
New Synonym ◽  
Taxonomical Study

A taxonomical study of the Chilean Stevia is herein presented since there is no agreement on current names and the number of species for Chile. A detailed morphological analysis of type and non-type specimens including new field observations was undertaken. In this work we recognized only one species of Stevia in Chile: S. philippiana. This species has a wide morphological variation mainly in leaf and pappus features. A lectotype of the name S. hyssopifolia was designated. Stevia hyssopifolia var. panulensis was regarded as a new synonym of S. philippiana. On the other hand, S. adenophora and S. chamaedrys were excluded from the Chilean flora. Finally, Porophyllym tarapacanum was excluded from the Tagetean genus Porophyllum and included as a new synonym of S. philippiana, too.

scholarly journals Year-scale Morphological Variation of the X-ray Crab Nebula

2004 ◽  
Vol 218 ◽  
pp. 181-184 ◽  
Author(s):  
Koji Mori ◽  
David N. Burrows ◽  
George G. Pavlov ◽  
J. Jeff Hester ◽  
Shinpei Shibata ◽  
...  
Keyword(s):  
Morphological Variation ◽  
Crab Nebula ◽  
The Other ◽  
X Ray ◽  
Morphological Variations ◽  
Other Hand ◽  
Pulsar Wind ◽  
Circular Structures ◽  
The Crab Nebula

We present year-scale morphological variations of the Crab Nebula revealed by the Chandra X-ray Observatory. Observations have been performed about every 1.7 years over the three years from launch. The variations are clearly recognized at two sites: the torus and the southern jet. The torus, which had been steadily expanding until 1.7 years ago, now appears to have shrunk in the latest observation. Additionally, the circular structures seen to the northeast of the torus have decayed into several arcs. On the other hand, the southern jet shows the growth of its overall kinked-structure. We discuss the nature of these variations in terms of the pulsar wind nebula mechanism.

Morphological variation in the genus Juliomys (Rodentia: Cricetidae: Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil

Zootaxa ◽  
2020 ◽  
Vol 4861 (3) ◽  
pp. 429-443
Author(s):  
CAROLINA PIRES ◽  
MARCELO WEKSLER ◽  
CIBELE R. BONVICINO
Keyword(s):  
Principal Component Analysis ◽  
Morphological Variation ◽  
Morphological Analysis ◽  
Principal Component ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
The Other ◽  
Anterior Portion ◽  
Living Species ◽  
Qualitative Characters

The region of Lagoa Santa, Minas Gerais, Brazil, is one of the most important karstic areas of the Brazilian Quaternary due to the faunistic diversity of living and extinct forms. Among them, some taxa remain poorly studied, as is the case of Calomys anoblepas Winge 1887. Despite the recent allocation of the taxon within Juliomys, its description and morphological analysis are condensed, based on comparative few specimens and on few informative characters. In this study, we investigate characters proposed to distinguish species of Juliomys, and reevaluate the taxonomic status of the fossil Juliomys anoblepas. We analyzed 80 cranio-dental morphological characters in 233 specimens represented by the four species currently recognized: J. pictipes (Osgood 1933), J. rimofrons Oliveira & Bonvicino 2002, J. ossitenuis Costa, Pavan, Leite & Fagundes 2007, and J. ximenezi Christoff, Vieira, Oliveira, Gonçalves, Valiati & Tomasi 2016. We also performed principal component analysis on eight craniodental measurements available for the J. anoblepas hypodigm. The review of morphological systems and the evaluation of the characters used in the literature revealed that there are no diagnostic characters in the anterior portion of the skull and in the molar series of Juliomys, being difficult to differentiate the fossil from the other living species. Only six qualitative characters were variable and applicable to the hypodigm of J. anoblepas. Characters are polymorphic, invariable, or the fossil is not sufficiently complete to determinate its states. The taxon could not be morphometrically differentiated from J. pictipes and J. ossitenuis. Based on the results presented herein, we consider J. anoblepas as a nomen dubium and restrict its name to the taxon’s hypodigm. 

scholarly journals Morphology and phenology of sexuals and new distribution data on the blind Mediterranean ant Hypoponera abeillei (Hymenoptera, Formicidae)

Sociobiology ◽  
2021 ◽  
Vol 68 (4) ◽  
pp. e7261
Author(s):  
Enrico Schifani ◽  
Antonio Scupola ◽  
Mattia Menchetti ◽  
Erika Bazzato ◽  
Xavier Espadaler
Keyword(s):  
Mediterranean Region ◽  
The Other ◽  
Distribution Data ◽  
The West ◽  
Number Of Species ◽  
Other Hand ◽  
The Mediterranean ◽  
New Distribution

Hypoponera abeillei is the sole member of the otherwise exclusively Afrotropical abeillei group to occur in the West-Palearctic and since its first description on the basis of two Corsican workers in 1881, it remained little-known. Workers of this species are thought to entirely lack eyes, a rare trait among ants of the region, yet their lifestyle remains undocumented. On the other hand, the male caste has been described from 4 Tunisian specimens in 1921, and queens remained so far undescribed. We present an updated description of the male caste based on 45 specimens and a first description of the queen caste based on 14 specimens. The H. abeillei material we examined comes from Italy, Spain and Malta (mostly originating from coastal localities), and comprises 11 inedit distribution records, including the first findings in the islands of Mallorca, Malta and Sardinia. Moreover, we provide a first phenological overview of the species’ nuptial flights. Our data show that H. abeillei sexuals flight during the summer, mostly in August, and demonstrate that they can easily be distinguished from all the other Hypoponera species inhabiting the Mediterranean region based on their morphology. The remarkable diversity of Mediterranean Hypoponera males and queens suggest that sexuals may have a role in future attempts to understand relationships within this genus, yet the number of species in which sexual castes are documented is still extremely reduced.

scholarly journals Unravelling the convoluted nomenclature of Marphysa simplex (Annelida, Eunicidae) with the proposal of a new name and the re-description of species

2021 ◽  
Vol 97 (1) ◽  
pp. 121-139
Author(s):  
Isabel Cristina Molina-Acevedo ◽  
Izwandy Idris
Keyword(s):  
Morphological Characteristics ◽  
Species Group ◽  
Junior Synonym ◽  
The Other ◽  
Anterior Region ◽  
Type Specimens ◽  
New Name ◽  
Other Hand ◽  
Group A ◽  
Taxonomic Confusion

Marphysa simplex is a name that three species bear within the same genus, but each has a different authority and morphological characteristics. This homonymy condition leads to taxonomic confusion and the finite designation of name-bearing is imperative. The current study focuses on two species identified as M. simplex Crossland, 1903 and M. simplex Treadwell, 1922 and a third one, recently considered a secondary homonymy, M. simplex (Langerhans, 1884), is also assessed. The available type specimens were examined and re-described in detail using updated characters and the original descriptions. Marphysa simplex (Langerhans, 1884) is herein judged as an indeterminable species. Marphysa simplex Crossland, 1903 is confirmed as a junior synonym of M. teretiuscula (Schmarda, 1861a) because the differences are minimal. Moreover, M. teretiuscula has characteristics similar to Group B2 (Sanguinea-group; only compound spinigers), instead of the Teretiuscula-group (compound spinigers in the anterior region, subacicular limbate in all chaetigers). On the other hand, M. simplex Treadwell, 1922 is a junior primary homonym of Crossland’s species replaced by M. fijiensisnom. nov. with the chaetal arrangement similar to Group A (limbate chaetae only). In conclusion, the name M. simplex is now unacceptable. The hypothesis on species group only with limbate chaetae and the redescription on M. teretiuscula is also given.

scholarly journals Taxonomic changes resulting from a review of the types of Australian Anoplognathini (Coleoptera: Scarabaeidae: Rutelinae) housed in Swedish natural history collections

Zootaxa ◽  
2021 ◽  
Vol 4908 (2) ◽  
pp. 225-238
Author(s):  
MATTHIAS SEIDEL ◽  
CHRIS A.M. REID
Keyword(s):  
Natural History ◽  
The Other ◽  
Type Material ◽  
Type Specimens ◽  
Natural History Collections ◽  
New Synonym ◽  
Senior Synonym ◽  
Taxonomic Changes ◽  
First Time ◽  
Total Type

The type material of Australian Anoplognathini (Coleoptera: Scarabaeidae: Rutelinae) housed in Swedish natural history collections is reviewed, concerning three genera: Anoplognathus Leach, 1815, Amblyterus MacLeay, 1819, and Repsimus MacLeay, 1819. The species were described by G.J. Billberg, J.W. Dalman, L. Gyllenhal, C.J. Schönherr, O. Swartz, and C.P. Thunberg. The contemporary type material of W.S. MacLeay in the Macleay Museum, Sydney, is also examined as it has been overlooked by previous researchers. In total, type specimens for 12 species described between 1817 and 1822 were found in the Naturhistoriska Riksmuseet in Stockholm the Evolutionsmuseet in Uppsala and the Macleay Museum. Five of these species are valid: Anoplognathus brunnipennis, (Gyllenhal, 1817); A. olivieri (Schönherr & Dalman, 1817); A. porosus (Dalman, 1817); Amblyterus cicatricosus (Gyllenhal, 1817); and Repsimus manicatus (Swartz, 1817). The other seven species are junior synonyms, as follows (senior synonym first): A. brunnipennis = Rutela chloropyga Thunberg, 1822 (new synonym); A. olivieri = Rutela lacunosa Thunberg, 1822 (new synonym); A. viridiaeneus (Donovan, 1805) = A. latreillei (Schönherr & Gyllenhal, 1817); A. viriditarsus Leach, 1815 = Rutela analis Dalman, 1817; and R. manicatus = Anoplognathus brownii W.J. MacLeay, 1819 = A. dytiscoides W. J. MacLeay, 1819 = Rutela ruficollis Thunberg, 1822 (new synonym). Authorship of A. latreillei and A. olivieri is corrected, as noted above. Anoplognathus brunnipennis has been misidentified for the last 60 years at least, leading to the synonymy noted above. Anoplognathus flavipennis Boisduval, 1835 (revised status), is reinstated as the oldest available name for the misidentified A. brunnipennis and the types of A. flavipennis in the Muséum National d’Histoire Naturelle, Paris, are illustrated. Lectotypes are designated for: Anoplognathus brownii, A. flavipennis, A. dytiscoides, Melolontha cicatricosa, Rutela analis, R. brunnipennis, R. lacunosa, R. latreillei, R. manicata, R. olivieri, R. porosa, R. ruficollis, and R. chloropyga. Photographs of all type specimens examined are presented for the first time. 

Analogue model studies of induction effects at auroral latitudes

1995 ◽  
Vol 13 (11) ◽  
pp. 1187-1196
Author(s):  
A. Viljanen ◽  
L. Szarka
Keyword(s):  
Magnetic Field ◽  
Thin Sheet ◽  
The Other ◽  
The Arctic ◽  
Field Observations ◽  
Analogue Model ◽  
Model Studies ◽  
Northern Fennoscandia ◽  
Horizontal Field ◽  
Other Hand

Abstract. In addition to field observations and numerical models, geomagnetic induction effects can be studied by scaled analogue model experiments. We present here results of analogue model studies of the auroral electrojet with an Earth model simulating the Arctic Ocean and inland conductivity structures in northern Fennoscandia. The main elements of the analogue model used were salt water simulating the host rock, an aluminium plate corresponding to the ocean and graphite pieces producing the inland highly conducting anomalies. The electrojet was a time-harmonic line current flowing at a (simulated) height of 100 km above northern Fennoscandia. The period simulated was 9 min. The analogue model results confirmed the well-known rapid increase of the vertical field when the coast is approached from the continent. The increase of the horizontal field due to induced ocean currents was demonstrated above the ocean, as well as the essentially negligible effect of these currents on the horizontal field on the continent. The behaviour of the magnetic field is explained with a simple two-dimensional thin-sheet model. The range, or the adjustment distance, of the ocean effect inland was found to be some hundreds of kilometers, which also agrees with earlier results of the Siebert-Kertz separation of IMAGE magnetometer data. The modelled inland anomalies evidently had too large conductivities, but on the other hand, their influence decayed on scales of only some tens of kilometers. Analogue model results, thin-sheet calculations, and field observations show that the induction effect on the horizontal magnetic field Bx near the electrojet is negligible. On the other hand, the vertical component Bz is clearly affected by induced currents in the ocean. Evidence of this is the shift of the zero point of Bz 0-1° southwards from the maximum of Bx. The importance of these results are discussed, emphasizing the determination of ionospheric currents.

scholarly journals Preliminary study of the avifauna of the families Numididae and Phasianidae (Galliformes) of the Bombo-Lumene hunting area and reserve in Kinshasa (DR Congo)

2021 ◽  
Vol 12 (2) ◽  
pp. 019-031
Author(s):  
Jean Victor Tshisuku Milolo ◽  
Dieudonné Musibono Eyul’anki ◽  
Constantin Lubini Ayingweu ◽  
Séraphin Ifuta Ndey Bibuya
Keyword(s):  
Democratic Republic ◽  
Democratic Republic Of Congo ◽  
The Other ◽  
Field Observations ◽  
Dr Congo ◽  
Republic Of Congo ◽  
Other Hand ◽  
Numida Meleagris ◽  
Preliminary Study ◽  
Hunting Estate

The present study consisted of the identification of Numididae and Phasianidae birds of the Bombo-Lumene Hunting Estate and Reserve with a view to a domestication trial of one or two of their species. It focuses on direct field observations and trapping of birds. The following parameters were targeted in relation to domestication: weight, size, diet of these birds. A total of 468 bird specimens were observed (105) and captured (363) in various habitats. Of the individuals captured, 31 or 8.5% were Numididae and 332 or 91.4% were Phasianidae. The identification revealed five (5) species, three (3) genera, two (2) families and a single order. The species Francolinus afer, Numida meleagris and Francolinus coqui are the richest with respectively 364 individuals, 58 individuals and 42 individuals. On the other hand, the species Guttera pucherani and Francolinus streptophorus are the least rich with three individuals and one individual respectively. As millet farming has already been successfully experimented elsewhere and in the Democratic Republic of Congo, the results obtained from the targeted parameters indicate that among the species identified, only the species Guttera pucherani (Numididae) and Francolinus afer (Phasianidae) are eligible for a domestication trial in the Democratic Republic of Congo.

scholarly journals Pengaruh Preferensi Belanja Konsumen terhadap Perkembangan Pasar Ciputat di Kota Tangerang Selatan

Arsitektura ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 59
Author(s):  
Nurul Handayani ◽  
Kuswanto Nurhadi ◽  
Erma Fitria Rini
Keyword(s):  
Regional Scale ◽  
The Other ◽  
Field Observations ◽  
Shopping Centers ◽  
Traditional Markets ◽  
Other Hand ◽  
The People ◽  
Traditional Market ◽  
The One ◽  
Technique Analysis

<p><em>Ciputat Market is a regional scale traditional market in South Tangerang. In 2002, the construction of shopping centers and modern shops began to grow slowly in the area of South Tangerang. The operation of shopping centers and modern shops are getting closer and outreach to the people, on the one hand it has made it easier for people to buy goods of daily needs, but on the other hand it can impact the development of the traditional market, because consumers have many choices places to shop. The problem of this study was about the changing of consumers shopping preference that can effect the development of Ciputat Market. The purpose of this study was to determine the effect of consumers shopping preferences towards the development of Ciputat Market in South Tangerang. The method used in this research is deductive with descriptive explanative technique analysis. While the data obtained is the result of field observations, questionnaires, and document research. The results of this study shows the preferences of consumer shopping in South Tangerang bases on the location of shopping vebues indicated a tendency to shop in other shopping venues rather than Ciputat market, while the development of the range of services markets tend to stagnate.</em></p><p><strong><em>Keywords: </em></strong><em>shopping preferences, development of traditional markets</em></p>

Programming the News

2018 ◽  
Author(s):  
Taina Bucher
Keyword(s):  
News Media ◽  
The Other ◽  
Institutional Setting ◽  
Field Observations ◽  
Other Hand ◽  
News Organizations ◽  
The Media ◽  
Algorithmic Logic ◽  
The One ◽  
Institutional Actors

Algorithmic power and politics stems in part from how algorithms acquire the capacity to disturb and to compose new sensibilities as part of situated practices, particularly in terms of how they become invested with certain political and moral capacities. Looking at how algorithms materialize in the institutional setting of the news media, the chapter considers how algorithms are made to matter. Based on field observations and 20 interviews with digital editors and managers at leading Scandinavian news organizations the chapter explores how institutional actors are responding to the proliferation of data and algorithms. The analysis shows how, on the one hand, news organizations feel the pressure to reorient their practices toward the new algorithmic logic governing the media landscape at large. On the other hand, algorithms work to disturb and question established boundaries and norms of what journalism is and ought to be.

scholarly journals Toward an Updated Taxonomy of the South American Amaranthaceae II: Subfamily Salicornioideae, Tribes Salicornieae and Suaedeae

2021 ◽  
Vol 106 ◽  
pp. 292-324
Author(s):  
Nicolás F. Brignone ◽  
Adriel I. Jocou ◽  
Silvia S. Denham
Keyword(s):  
South America ◽  
Digital Images ◽  
Taxonomic Revision ◽  
Herbarium Specimens ◽  
South American ◽  
Field Observations ◽  
The South ◽  
Type Specimens ◽  
Material Type ◽  
New Synonym

This paper is the second in a series treating the Amaranthaceae s.l. in South America. We present here a taxonomic revision of tribes Salicornieae and Suaedeae (subfamily Salicornioideae) based on the study of herbarium material, type specimens, digital images, original publications, and field observations. The South American Amaranthaceae s.l. flora includes Allenrolfea Kuntze, Heterostachys Ung.-Sternb., Mangleticornia P. W. Ball, G. Kadereit & Cornejo, and Salicornia L. from Salicornieae, and Suaeda Forssk. ex J. F. Gmel. from Suaedeae. Lectotypes for seven names are here designated. The distribution of all species is updated based on the revision and proper identification of many herbarium specimens and field observations. A new synonym for Salicornia neei Lag. is here proposed.

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