Niche modelling to guide conservation actions in France for the endangered crayfish Austropotamobius pallipes in relation to the invasive Pacifastacus leniusculus

2019 ◽  
Vol 65 (2) ◽  
pp. 304-315
Author(s):  
Clémentine Préau ◽  
Iris Nadeau ◽  
Yann Sellier ◽  
Francis Isselin‐Nondedeu ◽  
Romain Bertrand ◽  
...  
Keyword(s):  
Pacifastacus Leniusculus ◽  
Niche Modelling ◽  
Austropotamobius Pallipes ◽  
Conservation Actions

Applying ecological niche modelling to plan conservation actions for the Red-spectacled Amazon (Amazona pretrei)

2010 ◽  
Vol 143 (1) ◽  
pp. 102-112 ◽  
Author(s):  
Miguel Ângelo Marini ◽  
Morgane Barbet-Massin ◽  
Jaime Martinez ◽  
Nêmora P. Prestes ◽  
Frédéric Jiguet
Keyword(s):  
Ecological Niche ◽  
Ecological Niche Modelling ◽  
Niche Modelling ◽  
Conservation Actions

scholarly journals Should Redclaw Crayfish be introduced to Fiji?

1995 ◽  
Vol 2 (4) ◽  
pp. 312
Author(s):  
Roger Lowery
Keyword(s):  
Pacifastacus Leniusculus ◽  
River Systems ◽  
Cherax Quadricarinatus ◽  
Austropotamobius Pallipes ◽  
Aphanomyces Astaci ◽  
Large Populations ◽  
New Locations ◽  
The Uk ◽  
Native Crayfish ◽  
Redclaw Crayfish

Whenever a new organism comes on the aquaculture scene there is a rush to try it out and to introduce the species to new locations. Such was the case with Pacifastacus leniusculus in Europe in the early 1980s. In the UK there was at the time no legislation to control such introductions and commercial pressures ensured that the species was soon widely distributed throughout the UK. One consequence was the introduction of the Crayfish Plague Aphanomyces astaci which resulted in the destruction of large populations of the native crayfish Austropotamobius pallipes in several river systems. It was against this background that I came to learn of a proposal to introduce Cherax quadricarinatus to Fiji in 1991. The commercial proposal was put to the Department of Fisheries who were considering accepting it when, on the basis of experience with crayfish in the UK, I proposed that there should be a delay while the species was evaluated for its likely effect on the Fijian fauna.

Horizontal transmission of Thelohania contejeani in the endangered white-clawed (Austropotamobius pallipes) and the invasive signal crayfish (Pacifastacus leniusculus)

Parasitology ◽  
2012 ◽  
Vol 139 (11) ◽  
pp. 1471-1477 ◽  
Author(s):  
EMILY M. IMHOFF ◽  
ROBERT J. G. MORTIMER ◽  
MARTIN CHRISTMAS ◽  
ALISON M. DUNN
Keyword(s):  
Horizontal Transmission ◽  
Abdominal Muscle ◽  
Pacifastacus Leniusculus ◽  
Control Group ◽  
Microsporidian Parasite ◽  
Signal Crayfish ◽  
Treatment Groups ◽  
Austropotamobius Pallipes ◽  
Group 4 ◽  
Experimental Treatments

SUMMARYThe microsporidian parasite Thelohania contejeani causes porcelain disease and has been implicated in mass mortalities in populations of the endangered European crayfish Austropotamobius pallipes. However, the route of parasite transmission is not known. This paper investigates the horizontal transmission of T. contejeani between A. pallipes hosts as well as its transmissibility to the invasive signal crayfish (Pacifastacus leniusculus). Field collected juvenile A. pallipes and P. leniusculus were assigned to 1 of 3 experimental treatments; fed heavily infected A. pallipes tissue, exposed to water from tanks housing heavily parasitized A. pallipes, and a control group to provide an estimate of the baseline infection levels in the field. After 26 weeks, abdominal muscle samples were screened by PCR for T. contejeani. Infection was significantly higher in the treatment groups (83% in the cannibalism treatment, 42% in the water exposure treatment) than in the control group (4%), providing evidence for horizontal transmission of the parasite between A. pallipes hosts. Cannibalism and scavenging are common amongst crayfish, providing transmission opportunities in the field. The study also provides the first direct evidence for transmission of the parasite from an indigenous European crayfish species to the invasive signal crayfish, with 50% of P. leniusculus in each treatment, and 8% of control animals infected. We discuss the possibility that high density populations of the invasive signal crayfish may serve either as reservoirs or sinks for the parasite.

ASPECTS OF THE ARCHITECTURAL AND URBAN HERITAGE: FROM REGISTERS TO CONSERVATION FOR ADAPTIVE AND MODERN USE AT THE HISTORIC CORES OF SALT AND IRBID, JORDAN

2017 ◽  
Vol 11 (2) ◽  
pp. 190
Author(s):  
Leen Adeeb Fakhoury ◽  
Naif Adel Haddad
Keyword(s):  
Local Community ◽  
Initial Assessment ◽  
Physical Factors ◽  
Cultural Significance ◽  
Community Quality Of Life ◽  
Urban Heritage ◽  
Two Cities ◽  
Conservation Actions ◽  
Historic Cities

This paper attempts to present and discuss the outcome of the results of the key different studies and projects carried out at Salt and at Irbid historic cores.  It focuses on the executed urban heritage projects undertaken mainly by the Ministry of Tourism and Antiquities (MoTA) of Jordan in the last two decades. It discusses their different aspects through initial assessment of the loss and degradation of the cultural heritage assets of the two cities; the fragmentation and lack of connectivity between the modern and historic cores; issues of sustainability of architectural and urban heritage projects i.e. tourism planning and conservation; and reuse projects at the historic cores in relation to cultural, physical factors and development needs. It also addresses the behaviour and characteristics of the urban regeneration process in those two historic cities, starting from their documentation to examination of the different aspects of the currently adopted urban practices and policies, and their impact on the existing urban heritage, depending on the specific identity of the respective historic cores. Finally, it aims to define the main constraints and challenges for the reuse of the existing heritage fabric including the local community quality of life, while building on sustainable heritage activities accommodating tourism opportunities. This will give, at least, some indications from which we can identify a use or combination of uses, and practical steps needed for successful heritage conservation actions in Jordan, in order to retain the cultural significance of the place.

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