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CONTRIBUTION TO THE KNOWLEDGE OF PERCNON GIBBESI (DECAPODA, GRAPSIDAE), AN EXOTIC SPECIES SPREADING RAPIDLY IN SICILIAN WATERS BY CARLO PIPITONE 1 / , FABIO BADALAMENTI 1 / and ALICE SPARROW 2 / 1 / C.N.R.-I.R.M.A., Laboratorio di Biologia Marina, via Giovanni da Verrazzano 17, I-91014
In:
Crustaceana
Abstract
For most if not all European herpetofauna, range-wide mtDNA phylogeographies have been published. This facilitates establishing the provenance of introduced populations. However, precision is contingent on the spatial genetic structure across the range of the taxon under study and, in particular, from where within that range the introduction was sourced. In the Netherlands, the common midwife toad, Alytes obstetricans, only naturally occurs in the extreme southeast and is on the decline there. Yet, introduced populations thrive elsewhere in the country. We use mtDNA analysis to try to determine the origin of two introduced populations along the Dutch coast, in the city of The Hague and the dune area Meijendel. We compiled a database of hundreds of individuals from throughout the distribution range and added over 130 individuals from both native and introduced populations from the Netherlands, Belgium and Germany. The mtDNA haplotypes found in the introduced populations are associated with postglacial expansion. The main haplotype predominates in the natural range in the Netherlands, but also occurs much more widely across western Europe, north of the Pyrenees. A closely related haplotype, newly identified from The Hague, was not found in the native Netherlands range, suggesting an origin from abroad. The combination of low phylogeographic resolution and low sampling density in the postglacially colonized part of the range hampers our ability to determine the provenance of the introduced A. obstetricans populations.
also found three species (a native marsupial, Marmosa paraguayana Tate, 1931, and two exotic species, Mus musculus Linnaeus, 1758 and Rattus rattus (Linnaeus, 1758)) that were not captured in any of the sampling areas. Spatial distribution of diversity and richness estimates The two
In:
Animal Biology
Bio-Invasions and Their Impact on Nature, the Economy and Public Health
Bioglobalisation is anything but new. The exotic fungus Phytophtora has threatened European potato harvests since 1846. Since then, the number of deliberate and accidental introductions of exotic species has grown rapidly. Environmental factors such as climate change also play an increasing role.
This book is a thorough and informative overview of all aspects of bioglobalisation. It describes its nature and scope, as well as history, drivers and mechanisms. Using vivid examples, the book addresses which species are likely to become invasive, which bioregions are vulnerable, and whether we can - and should - try to control bio-invasions.
Separate chapters address the impacts of bioglobalisation on the environment and on our economy, and discuss, for instance, how virus invasions are threatening human lives worldwide.
This book is a thorough and informative overview of all aspects of bioglobalisation. It describes its nature and scope, as well as history, drivers and mechanisms. Using vivid examples, the book addresses which species are likely to become invasive, which bioregions are vulnerable, and whether we can - and should - try to control bio-invasions.
Separate chapters address the impacts of bioglobalisation on the environment and on our economy, and discuss, for instance, how virus invasions are threatening human lives worldwide.
Bio-Invasions and Their Impact on Nature, the Economy and Public Health
Bioglobalisation is anything but new. The exotic fungus Phytophtora has threatened European potato harvests since 1846. Since then, the number of deliberate and accidental introductions of exotic species has grown rapidly. Environmental factors such as climate change also play an increasing role.
This book is a thorough and informative overview of all aspects of bioglobalisation. It describes its nature and scope, as well as history, drivers and mechanisms. Using vivid examples, the book addresses which species are likely to become invasive, which bioregions are vulnerable, and whether we can - and should - try to control bio-invasions.
Separate chapters address the impacts of bioglobalisation on the environment and on our economy, and discuss, for instance, how virus invasions are threatening human lives worldwide.
This book is a thorough and informative overview of all aspects of bioglobalisation. It describes its nature and scope, as well as history, drivers and mechanisms. Using vivid examples, the book addresses which species are likely to become invasive, which bioregions are vulnerable, and whether we can - and should - try to control bio-invasions.
Separate chapters address the impacts of bioglobalisation on the environment and on our economy, and discuss, for instance, how virus invasions are threatening human lives worldwide.
Strumigenys silvestrii is a tiny dacetine ant (Hymenoptera: Formicidae: Dacetini), apparently from South America, that has spread to the southern US and the West Indies. Strumigenys silvestrii has recently been found for the first time in the Old World, from the island of Madeira, mainland Portugal, and Macau. Here, we document new distributional records and the geographic spread of S. silvestrii. We compiled and mapped 67 site records of S. silvestrii. We documented the earliest known S. silvestrii records for 20 geographic areas (countries, major islands, and US states), including four areas for which we found no previously published records: Georgia (US), Grenada, Nevis, and St. Vincent. Strumigenys silvestrii is the only New World dacetine ant that has been recorded in the Old World. The distribution of its closest relatives and of known S. silvestrii specimen records supports the hypothesis that S. silvestrii is native to South America. Throughout its New World range (South America, the West Indies, and the southern US), many S. silvestrii records are from undisturbed forest habitats (usually indicative of a native species), but are very recent (usually indicative of a newly arrived exotic species).
TS will maximize the tenderness and consistency of alpaca carcases on a whole carcase basis. Key Words – processing treatments, meat quality, exotic species INTRODUCTION The Australian alpaca meat industry is growing. To date, the literature has reported inconsistencies in alpaca meat quality
combination in order to maximise tenderness of alpaca carcases on a whole carcase basis. Key Words – processing treatments, meat quality, exotic species INTRODUCTION Previous research on Australian alpacas has identified many limitations in carcase processing, limiting the ability to deliver a tender product
order to verify their genetic integrity. Genetic monitoring of wild populations is crucial for the conservation of endangered species, even to detect unpredictable cases of hybridization with cryptic exotic species, as this study highlighted. Ultimately, our findings contribute to understanding genetic