Caractérisation des taxons du genre Ornithogalum, sous-genre Heliocharmos (Hyacinthaceae), en Afrique du Nord et en France : analyse morphologique et biogéographique

1991 ◽  
Vol 69 (8) ◽  
pp. 1787-1794 ◽  
Author(s):  
J. Moret ◽  
N. Galland
Keyword(s):  
Multivariate Analysis ◽  
Key Words ◽  
North Africa ◽  
Numerical Taxonomy ◽  
Afrique Du Nord ◽  
Analyse Morphologique ◽  
Flora Of France

Two species of Ornithogalum subg. Heliocharmos are present in North Africa: O. algeriense and O. kochii. These are often confused with O. umbellatum from Europe. Several populations covering the spread of variation of these species were studied biometrically using macromorphological characters. Multivariate analysis results suggest that O. kochii is close to the diploid cytotype of O. umbellatum. The diploid cytotypes are closer to the popyploid series of O. umbellatum than to O. algeriense. These results are discussed in relation to biogeography and evolution. Key words: Angiosperms, Hyacinthaceae, Ornithogalum, subg. Heliocharmos, numerical taxonomy, systematic, biogeography, flora of Marocco, flora of France. [Journal translation]

scholarly journals Genetic diversity in potato (Solanum tuberosum L.)

1970 ◽  
Vol 36 (2) ◽  
pp. 121-125 ◽  
Author(s):  
MAA Mondal ◽  
MM Hossain ◽  
MG Rasul ◽  
M Shalim Uddin
Keyword(s):  
Genetic Diversity ◽  
Cluster Analysis ◽  
Multivariate Analysis ◽  
Solanum Tuberosum ◽  
Key Words ◽  
Diversity Pattern ◽  
Wide Range ◽  
Cluster Distance ◽  
Range Of Variation

Genetic diversity in 31 potato genotypes (parents and their hybrid progenies) was determined using multivariate analysis. Cluster analysis revealed that the parents and their hybrid progenies could be grouped into five different clusters. The maximum number of genotypes were included in clusters II and V. Cluster V had maximum and cluster I had minimum intra-cluster distance. Cluster mean showed wide range of variation for several characters among single as well as multi-genotypic clusters. Considering diversity pattern, parents should be selected from clusters I, III and V for the improvement of potato.   Key words: Genetic diversity, Cluster analysis, Potato DOI = 10.3329/bjb.v36i2.1499 Bangladesh J. Bot. 36(2): 121-125, 2007 (December)

Trichoptera and Plecoptera of the Seybouse River, northeast Algeria: Distribution, phenology and new records

Zootaxa ◽  
2020 ◽  
Vol 4845 (4) ◽  
pp. 552-564
Author(s):  
BOUDJÉMA SAMRAOUI ◽  
ZINEB BOUHALA ◽  
ANTONIO RUIZ GARCIA ◽  
JOAQUÍN MÁRQUEZ-RODRÍGUEZ ◽  
MANUEL FERRERAS-ROMERO ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
North Africa ◽  
New Records ◽  
Intermittent Streams ◽  
North African ◽  
Longitudinal Gradient ◽  
Rivers And Streams ◽  
Northeastern Algeria

The stoneflies and caddisflies of North Africa are still poorly known as vast areas of Algeria have yet to be investigated. A survey of the macroinvertebrates of the Seybouse River, northeast Algeria, was carried out from July 2014 to December 2016. Three species of stoneflies (Capnopsis schilleri, Capnioneura petitpierreae, and Tyrrhenoleuctra tangerina) and five taxa of caddisflies (Mesophylax aspersus, Hydropsyche maroccana, H. resmineda, H. artax/lobata, and H. gr. pellucidula) were identified. All taxa are new records to the Seybouse River and seven of them are new to northeastern Algeria. A multivariate analysis indicated that the Hydropsychidae exhibited a clear longitudinal gradient along the Seybouse River while Mesophylax aspersus seemed adapted to species-poor, intermittent streams. Further investigations of the stoneflies and caddisflies may inform conservation efforts and will prove useful to monitor the Seybouse River and similarly threatened North African rivers and streams. 

scholarly journals Taxonomy of the lesser jerboa Jaculus jaculus (Dipodidae, Rodentia) based on allozymic and morphological variation

2010 ◽  
Vol 56 (4) ◽  
pp. 421-431 ◽  
Author(s):  
Abderraouf Ben Faleh ◽  
Abdelwaheb Ben Othmen ◽  
Khaled Said
Keyword(s):  
Phylogenetic Analysis ◽  
Multivariate Analysis ◽  
Genetic Distance ◽  
North Africa ◽  
Morphometric Analysis ◽  
Morphological Variation ◽  
Taxonomic Status ◽  
Sympatric Species ◽  
Restricted Area ◽  
Meeting Point

Abstract The lesser Egyptian jerboa Jaculus jaculus, is a member of the subfamily Dipodinae, known to have a number of subspecies. Previous studies of J. jaculus from North Africa found various morphological forms of unknown taxonomic status, which are frequently grouped into two taxa: J. jaculus and J. deserti. We assessed the taxonomic status of this taxon in Tunisia using allozymic (phylogenetic analysis of 23 genetic loci encoding 16 enzymatic proteins) and morphological (multivariate analysis of 13 craniodental characters) analyses of 136 J. jaculus specimens collected from seven localities within its distribution range. Allozymic analysis clearly indicated the existence of two distinct groups of J. jaculus, with a mean genetic distance (D) value of 0.99 and FST=0.52. Individuals within the two groups did not show any obvious geographical structuration, even within the Matmata locality which represents the meeting point for the two groups where they were found in sympatry. Additionally, morphometric analysis of 13 craniodental characters was clearly separated the two groups. These results were obtained over a very restricted area of the total distribution of J. jaculus and strongly suggest the occurrence of two separate and often sympatric species within the currently accepted J. jaculus in Tunisia: J. jaculus and J. deserti .

DNA content and chromosome evolution in the shrubby Oxalis

Genome ◽  
1988 ◽  
Vol 30 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Daniel de Azkue ◽  
Arturo Martínez
Keyword(s):  
Multivariate Analysis ◽  
Dna Content ◽  
Numerical Taxonomy ◽  
Chromosome Evolution ◽  
Chromosome Size ◽  
Size And Shape

The amount of DNA varies widely in 20 shrubby Oxalis species analyzed, ranging from 1.76 pg in O. alstonii to 33.00 pg in O. dispar. This wide variation in DNA content coincided with a wide variation in chromosome size and shape. Numerical taxonomy methods showed that this variation in chromosome size and shape in shrubby Oxalis is mainly due to extra DNA. It was also possible to arrange the 20 species examined in six different groups on the basis of karyotypic similarities.Key words: Oxalis, DNA content, chromosome evolution, multivariate analysis.

First occourence of the family Glaresidae in Italy, with description of the new species Glaresis gentile from Sardinia (Coleoptera: Scarabaeoidea: Glaresidae)

2020 ◽  
Vol 15 (2) ◽  
pp. 44-53
Author(s):  
STEFANO ZIANI ◽  
MARCO ULIANA ◽  
ROBERTO RATTU
Keyword(s):  
New Species ◽  
Key Words ◽  
North Africa ◽  
Sand Dunes ◽  
First Record ◽  
The Other ◽  
European Species ◽  
The Family ◽  
Western European ◽  
Species Taxonomy

Glaresis gentile sp. nov. is described from southwestern Sardinia, Italy, providing the first record of the family Glaresidae from Italy. The new species is compared with the other western European species and with some other taxa described from North Africa. It appears to be closest to the poorly known Iberian G. thiniensis Verdú & Galante, 2001, whose aedeagus morphology is precised. Finally, a key to the European species is provided. Key words: Scarabaeoidea, Glaresidae, Glaresis, new species, taxonomy, Sardinia, Spain, sand dunes

The biology of Canadian weeds. 126. Amaranthus albus L., A. blitoides S. Watson and A. blitum L.

2003 ◽  
Vol 83 (4) ◽  
pp. 1039-1066 ◽  
Author(s):  
M. Costea and F. J. Tardif
Keyword(s):  
Key Words ◽  
Herbicide Resistance ◽  
North Africa ◽  
Acetolactate Synthase ◽  
Biological Information ◽  
Cultivated Plants ◽  
Multiple Resistance ◽  
Weed Biology ◽  
The Past ◽  
Bacteria And Fungi

A review of biological information is provided for three species of the genus Amaranthus: A. albus L., A. blitoides S. Watson and A. blitum L. The last species has been revised taxonomically and a new subspecies for Canada is presented-A. blitum subsp. emarginatus (Moq. ex Uline & Bray) Carretero, Munoz Garmendia & Pedrol. Amaranthus albus and A. blitoides are native to the U.S.A. and introduced to Canada. Both species are annual ruderal and agrestal weeds. During the past 100 yr the two species have spread across most provinces of Canada, but the greatest frequency and abundance have been recorded in Saskatchewan. Originating from Europe, Asia and North Africa, A. blitum was initially considered a non-persistent species. The present study shows that A. blitum especially, subsp. emarginatus, has continued to spread in Québec. The three species are alternate hosts to many insects, nematodes, viruses, bacteria and fungi that affect cultivated plants. In other areas (U.S.A., Europe and Asia), the three species have developed multiple resistance to triazine and acetolactate-synthase-inhibiting herbicides. Key words: Amaranthus albus, Amaranthus blitoides, Amaranthus blitum, weed biology, ecology, taxonomy, herbicide resistance

scholarly journals Nouvelles données sur la flore endémique du sous-secteur de l’Atlas tellien Oranais “O3” (Algérie occidentale)

2018 ◽  
Vol 43 ◽  
pp. 63-69 ◽  
Author(s):  
Mohamed Djamel Miara ◽  
Hammou Mohammed Ait ◽  
Walid Dahmani ◽  
Moahmed Negadi ◽  
Abdelmadjid Djellaoui
Keyword(s):  
Nous Avons ◽  
Key Words ◽  
New Taxa ◽  
North Africa ◽  
Floristic Composition ◽  
Mots Clés ◽  
Base De Données ◽  
Western Algeria ◽  
Endemic Flora ◽  
Composition Floristique

RésuméNouvelles données sur la flore endémique du sous-secteur de l’Atlas tellien Oranais «O3» (Algérie occidentale). Cette étude est une première synthèse régionale visant à proposer une nouvelle liste de la flore endémique du sous- secteur de l›Atlas tellien oranais (O3) en analysant les principaux changements taxonomiques et chorologique. Les données de littérature disponibles ont été exploitées notamment (Quezel & Santa, 1962-63; Vela & Benhouhou, 2007) et analysés en utilisant l’index de la base de données de l’Afrique du Nord (Dobignard & Chatelain, 2010-13). Cela a conduits à la suppression de 22 taxons de la liste de base comportant 94 taxons. Nous avons ensuite rajouté 15 nouveaux taxons signalés récemment dans la bibliographie au niveau de cette région ainsi que 3 taxons oubliés dans la première liste. La nouvelle liste de la flore endémique du O3 contenant 89 taxons a subi des changements considérables au niveau de sa composition floristique. Cette liste n’étant pas exhaustive devrait être enrichie par des nouveaux résultats au niveau des zones pas encore bien explorées sur le plan floristique notamment Mascara, Saida et Sidi Belabess. Mots clés: Algérie, chorologie, endémique,liste, taxonomie. AbstractNew data on endemic flora of the sub-sector of Oran Tell Atlas “O3” (Western Algeria). This study is a first regional synthesis aiming at proposing a new list of the endemic flora of the sub-sector of Oran Tell Atlas (O3), by analyzing the main taxonomic and chorological changes. The literature data available have been exploited in particular (Quézel & Santa, 1962-63, VÉla & Benhouhou, 2007) and analyzed using the index of the database of North Africa (Dobignard & Chatelain, 2010-13). This led to the deletion of 22 taxa from the basic list of 94 taxa. We then added 15 new taxa reported recently in the bibliography at this region as well as 3 taxa forgotten in the first list. The new list of endemic flora of O3 containing 89 taxa has undergone considerable changes in its floristic composition. This list which is not exhaustive should be enriched by new results at the level of areas not yet well explored on the floristic plan including Mascara, Saida and Sidi Belabess. Key words: Algeria, chorology, endemic, list, taxonomy.

scholarly journals Qui, entre Orient et Occident, mange de la viande, quelle viande et pourquoi ?

2020 ◽  
Vol 15 (2) ◽  
pp. 18-33
Author(s):  
Jean-Pierre Digard
Keyword(s):  
Middle East ◽  
North Africa ◽  
Legal Status ◽  
Meat Consumption ◽  
Second World War ◽  
Afrique Du Nord ◽  
World War ◽  
Cultural Status ◽  
Second World ◽  
Seconde Guerre Mondiale

Abstract: The consumption of meat depends first of all on religious prescripts: unlike Christianity, Judaism and Islam prohibit certain meats. Then comes the cultural status (distinct from the legal status) of animals: in Europe, the consumption of rabbits has declined due to his assimilation to a “pet”. After an increase in the post Second World War period, meat consumption has been declining in Europe since the 2000s; similarly, in North Africa and the Middle East, its consumption tends to be closer to that of Europe. These fluctuations owe more to changes in living modes and standards than to animalist activism.Résumé : La consommation carnée dépend d’abord de prescriptions religieuses : à la différence du christianisme, le judaïsme et l’islam interdisent certaines viandes. Vient ensuite le statut culturel (distinct du statut légal) des animaux : en Europe, la consommation du lapin a reculé du fait de son assimilation à un « animal de compagnie ». En Europe toujours, après une hausse après la Seconde Guerre mondiale, la consommation carnée diminue depuis les années 2000 ; à l’inverse, en Afrique du Nord et au Moyen-Orient, elle tend à se rapprocher de celle de l’Europe. Ces fluctuations doivent davantage à l’évolution des genres et des niveaux de vie qu’au militantisme animaliste.

scholarly journals Fondation de Qarthadasht en Afrique du Nord – comme problème dans les recherches sur la chronologie de la plus ancienne histoire de Carthage

2021 ◽  
Vol 16 (1) ◽  
pp. 88-99
Author(s):  
Miron Wolny ◽  
Keyword(s):  
North Africa ◽  
The Other ◽  
Afrique Du Nord ◽  
Trade Relations ◽  
Other Hand ◽  
German Science ◽  
Literary Relations ◽  
The Mediterranean ◽  
Political Economic

The author of the article tries to connect the observation of economic and trade relations developed by the Phoenicians in the western part of the Mediterranean with a reflection on the situation in which the Levant countries found themselves. It is known that in the period in which the founding of Carthage can be hypothetically located, the Phoenician centers were under political, economic and military pressure – mainly from Assyria – although other powers, such as Damascus, cannot be ruled out. On the other hand, however, it is known that, for example, in German science the lack of a founding act of Carthage in North Africa was emphasized, and the archaeological traces left in this territory seem insufficient to reconcile conventional literary relations with the founding of Carthage at the end of the 9th century BC. The intention of this article is an attempt to show the issues on the basis of which one should consider the reinterpretation of the events reported as the context of the founding of Carthage. This procedure would serve to revise the existing findings of science on the chronology of the founding of Qarthadasht and could, consequently, contribute to showing that the founding of Carthage fell on a later period - i.e. the end of the 8th or the beginning of the 7th century BCE.

Les arcs calabro-siciliens et les relations entre Afrique du nord et Apennin

1962 ◽  
Vol S7-IV (5) ◽  
pp. 774-784 ◽  
Author(s):  
Andre Caire
Keyword(s):  
North Africa ◽  
Southern Italy ◽  
Afrique Du Nord ◽  
Southern Apennines ◽  
Mountain Area ◽  
Lower Miocene ◽  
Mountain System ◽  
Age Structures

Abstract A clarification of the paleogeographic relationships between the Berber mountain system of north Africa and the Apennines is related to a study of structural trends in southern Italy and Sicily. In the Peloritani mountain area of southern Sicily, Alpine age structures describe arcs opening to the northwest and are a transition from the E-W trend of the Berber and the Apennine trend. The WNW-SSE trending Catanzaro zone at the northern end of the arcs represents a zone of probably lower Miocene displacement. Prior to the Oligocene paroxysm, certain facies were common to western Calabria and the southern Apennines and it is assumed that they were deposited in a single continuous basin. Cretaceous flysch and nummulitic facies differences between north Africa and the Apennines are explained through introduction of varied sources for the sediments of the two areas.

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