scholarly journals On the enigmatic origin of the Mediterranean invasive Caulerpa racemosa (Caulerpales, Chlorophyta)

2006 ◽  
Vol 7 (1) ◽  
pp. 119 ◽  
Author(s):  
P. PANAYOTIDIS
Keyword(s):  
Invasive Species ◽  
Sexual Reproduction ◽  
20Th Century ◽  
Genetic Recombination ◽  
Rapid Expansion ◽  
Caulerpa Racemosa ◽  
The Mediterranean

The successful sexual reproduction of the Mediterranean invasive species Caulerpa racemosa could explain not only its rapid expansion during the last decade of the 20th century, but also its origin, through hybridation and genetic recombination of preexisting varieties. This paper argues on the cryptogenic origin of the Mediterranean invasive Caulerpa racemosa.

THE NEARCTIC BUG ZELUS RENARDII (KOLENATI) (HEMIPTERA REDUVIIDAE) IN NORTHERN ITALY AND SICILY

Redia ◽  
2020 ◽  
Vol 103 ◽  
pp. 87-88
Author(s):  
SALVATORE BELLA
Keyword(s):  
Invasive Species ◽  
Human Activities ◽  
Mediterranean Basin ◽  
Northern Italy ◽  
Rapid Expansion ◽  
Indigenous Species ◽  
The World ◽  
The Mediterranean ◽  
First Time ◽  
The Mediterranean Basin

The presence of Zelus renardii (Kolenati, 1856) (Hemiptera, Reduviidae, Harpactorinae), is documented for the first time in northern Italy (Liguria region) and in Sicily. This invasive species of nearctic origin was recorded for the first time in Europe in 2010 and in Italy in 2013. It is in rapid expansion in different areas of the world, especially in the Mediterranean basin and since it is extremely polyphagous its presence could represent a new threat for indigenous species and human activities.

The Biology of Mediterranean-Type Ecosystems

2018 ◽  
Author(s):  
Karen J. Esler ◽  
Anna L. Jacobsen ◽  
R. Brandon Pratt
Keyword(s):  
Climate Change ◽  
South Africa ◽  
Invasive Species ◽  
Habitat Loss ◽  
Endemic Species ◽  
Geographic Area ◽  
Cutting Edge ◽  
Wide Range ◽  
The Mediterranean ◽  
Mediterranean Type Ecosystems

The world’s mediterranean-type climate regions (including areas within the Mediterranean, South Africa, Australia, California, and Chile) have long been of interest to biologists by virtue of their extraordinary biodiversity and the appearance of evolutionary convergence between these disparate regions. Comparisons between mediterranean-type climate regions have provided important insights into questions at the cutting edge of ecological, ecophysiological and evolutionary research. These regions, dominated by evergreen shrubland communities, contain many rare and endemic species. Their mild climate makes them appealing places to live and visit and this has resulted in numerous threats to the species and communities that occupy them. Threats include a wide range of factors such as habitat loss due to development and agriculture, disturbance, invasive species, and climate change. As a result, they continue to attract far more attention than their limited geographic area might suggest. This book provides a concise but comprehensive introduction to mediterranean-type ecosystems. As with other books in the Biology of Habitats Series, the emphasis in this book is on the organisms that dominate these regions although their management, conservation, and restoration are also considered.

scholarly journals Microsatellite and Chromosome Evolution of Parthenogenetic Sitobion Aphids in Australia

Genetics ◽  
1996 ◽  
Vol 144 (2) ◽  
pp. 747-756 ◽  
Author(s):  
Paul Sunnucks ◽  
Phillip R England ◽  
Andrea C Taylor ◽  
Dinah F Hales
Keyword(s):  
Sexual Reproduction ◽  
Chromosome Evolution ◽  
Genetic Recombination ◽  
Allelic Variation ◽  
Repeat Unit ◽  
Chromosomal Evolution ◽  
Microsatellite Variation ◽  
Wide Range ◽  
Sexual Recombination ◽  
Minimum Numbers

Abstract Single-locus microsatellite variation correlated perfectly with chromosome number in Sitobion miscanthi aphids. The microsatellites were highly heterozygous, with up to 10 alleles per locus in this species. Despite this considerable allelic variation, only seven different S. miscanthi genotypes were discovered in 555 individuals collected from a wide range of locations, hosts and sampling periods. Relatedness between genotypes suggests only two successful colonizations of Australia. There was no evidence for genetic recombination in 555 S. miscanthi so the occurrence of recent sexual reproduction must be near zero. Thus diversification is by mutation and chromosomal rearrangement alone. Since the aphids showed no sexual recombination, microsatellites can mutate without meiosis. Five of seven microsatellite differences were a single repeat unit, and one larger jump is likely. The minimum numbers of changes between karyotypes corresponded roughly one-to-one with microsatellite allele changes, which suggests very rapid chromosomal evolution. A chromosomal fission occurred in a cultured line, and a previously unknown chromosomal race was detected. All 121 diverse S. near fragariae were heterozygous but revealed only one genotype. This species too must have a low rate of sexual reproduction and few colonizations of Australia.

scholarly journals The Chemical Composition of the Lionfish (Pterois miles, Bennett 1828), the New Invasive Species of the Mediterranean Sea

2018 ◽  
Vol 3 (2) ◽  
pp. 103-115 ◽  
Author(s):  
Deniz Ayas ◽  
Gulsemin Sen Agılkaya ◽  
Ali Rıza Kosker ◽  
Mustafa Durmus ◽  
Yılmaz Ucar ◽  
...  
Keyword(s):  
Invasive Species ◽  
Chemical Composition ◽  
Mediterranean Sea ◽  
Pterois Miles ◽  
The Mediterranean

3. Between myth and history

2020 ◽  
pp. 36-50
Author(s):  
Philip V. Bohlman
Keyword(s):  
20Th Century ◽  
Life Stories ◽  
14Th Century ◽  
Ibn Khaldun ◽  
The Mediterranean ◽  
Arab Music

‘Between myth and history’ begins with the 1932 Cairo Congress in Arab Music. The Arab contingent sought advice on progress, while the European delegates romanticized traditional Arab music. These contradictions, and Islam’s relationship with music, shaped the life-stories of three figures: 14th-century polymath Ibn Khaldūn; 20th-century Egyptian singer Umm Kulthūm; and ethnomusicologist Robert Lachmann, who found musical echoes of Muslim and Jewish pilgrims in Djerba, where he had been expecting to find local music fixed in time by isolation. The Mediterranean has inspired written and sung epics, which were translated into architecture and politics, taking them from myth into history.

scholarly journals Fungal clones win the battle, but recombination wins the war

IMA Fungus ◽  
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
André Drenth ◽  
Alistair R. McTaggart ◽  
Brenda D. Wingfield
Keyword(s):  
Sexual Reproduction ◽  
Fungal Pathogen ◽  
Genetic Recombination ◽  
Genetic Material ◽  
Clonal Reproduction ◽  
Changing Environment ◽  
Space And Time ◽  
Pathogen Populations

Abstract Clonal reproduction is common in fungi and fungal-like organisms during epidemics and invasion events. The success of clonal fungi shaped systems for their classification and some pathogens are tacitly treated as asexual. We argue that genetic recombination driven by sexual reproduction must be a starting hypothesis when dealing with fungi for two reasons: (1) Clones eventually crash because they lack adaptability; and (2) fungi find a way to exchange genetic material through recombination, whether sexual, parasexual, or hybridisation. Successful clones may prevail over space and time, but they are the product of recombination and the next successful clone will inevitably appear. Fungal pathogen populations are dynamic rather than static, and they need genetic recombination to adapt to a changing environment.

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