www.ittiofauna.org   contact: stefano.porcellotti@ittiofauna.org
Le Faune Webmuseum Decapoda Astacidae Pacifastacus

Il gambero segnalatore, Pacifastacus leniusculus (Dana, 1852)


Nomi comuni esteri - Inglese - pacific crayfish, californian crayfish, signal crayfish. Francese - écrevisse de Californie, écrevisse signal. Spagna - cangrejo senal. Tedesco - signalkrebs. Olanda - californische rivierkreeft. Svezia - signalkräfta. Finlandia - täplärapu. Lituania - zymetasis vezys. Polonia - rak sygnalowy. Russia (Koenisberg-Kaliningrad) - signal'nyi rak. Repubblica Ceca - rak signàlní.

  Click on the image to magnify and for the informations.  
Click sull'immagine per ingrandire e per le informazioni.

Classificazione - Regno: Animalia. Phylum: Arthropoda. Subphylum: Crustacea. Classe: Malacostraca. Ordine: Decapoda. Infraordine: Astacidea. Famiglia: Astacidae. Genere: Pacifastacus.

Sinonimi - Astacus leniusculus Dana, 1852. Astacus klamathensis Stimpson, 1857. Astacus trowbridgii Stimpson, 1857.

Altri nomi - Potamobius leniusculus Ortmann 1902; Bott 1950. Pacifastacus (Pacifastacus) leniusculus klamathensis Hobbs 1989. Pacifastacus (Pacifastacus) leniusculus leniusculus Hobbs 1989. Pacifastacus (Pacifastacus) leniusculus trowbridgii Hobbs 1989.

Tassonomia - Anche se negli USA sono state descritte tre sottospecie (P. l. leniusculus, P. l. trowbridgii e P. l. klomathensis), non sono molto chiare le loro caratteristiche distintive e loro validità tassonomica risulta attualmente ancora in stato di discussione.

Fonti bibliografiche principali - "Atlas of Crayfish in Europe", Publications Scientifiques du Muséum Nationel d'Histoire Naturelle, C. Souty-Grosset, D. M. Holdich, P. Y. Noel, J.D. Reynolds, P. Haffner (editors), Paris, 2006.

 

Distribuzione europea di P. leniusculus da "Atlas of Crayfish in Europe" pub. MNHN, Paris.

 

Specie endemica del nord ovest degli Stati Uniti e del sud ovest del Canada, a nord dalla British Columbia, fino alla California centrale a sud ed allo Utah ad est. Introdotta in Europa e Giappone. Il Europa il gambero segnalatore è tra le più diffuse specie di gamberi alloctoni. P. leniusculus è prevalentemente segnalato in Europa centrale, Scandinavia, Spagna e Gran Bretagna. Popolazioni sono presenti nei paesi dell'Europa orientale prospicienti al Mar Baltico, con l'eccezione dell'Estonia. Recentemente è stata confermata la sua presenza nel nord della Grecia.

Bibliografia - "Atlas of Crayfish in Europe", Publications Scientifiques du Muséum Nationel d'Histoire Naturelle, C. Souty-Grosset, D. M. Holdich, P. Y. Noel, J.D. Reynolds, P. Haffner (editors), Paris, 2006.

Alderman et al. 1991. Signal crayfish acting as vectors in crayfish plague. Aquaculture 86: 3-6.

Belchier et al. 1998. Estimating age and growth in long-lived temperate freshwater crayfish using lipofuschin. Freshwater Biology 39: 439-446.

Blake & Hart 1993. Habitat preferences and survival of juvenile signal crayfish, Pacifastacus leniusculus - the influence of water depth, substratum, predatory fish and gravid female crayfish. Freshwater Crayfish 9: 318-332.

Blake & Laurent 1982. Le faucardage par les écrevisses, résultats préliminaires. Bulletin mensuel de lo Société Linnéenne de Lyon 51 (6): 203-208.

Bubb et al. 2002. Winter movements and activity of signal crayfish Pacifastacus leniusculus in an upland river, determined by radio telemetry. Hydrobiologia 483: 111-119.

Edsman 2000. Crayfish conservation in Sweden, lessons to learn, in Rogers D. & Brickland J. (eds), Crayfish Conference Leeds. Environment Agency, Leeds: 19-25.

Erkamo et al. 2004. Ravut - Kräftor, in Kalavarat 2004. SVT Maa-, metsä-ja kalatalous 60: 67-71.

Griffiths et al. 2004. Competition for shelter among over-wintering signal crayfish and juvenile Atlantic salmon. Journal of Fish Biology 65: 436-447.

Guan 1994. Burrowing behaviour of signal crayfish, Pacifastacus leniusculus (Dana), in the River Great Ouse, England. Freshwater forum 4: 155-168.

Guan & Wiles 1996. Growth, density and biomass of crayfish, Pacifastacus leniusculus, in a British lowland river. Aquatic Living Resources 9: 265-272.

Guan & Wiles 1997a. The home range of signal crayfish in a British lowland river. Freshwater forum 8: 45-54.

Guan & Wiles b. Ecological impact of introduced crayfish on benthic fishes in a British lowland river. Conservation Biology 11 (3): 641-647.

Hiley 2003. The slow quiet invasion of signal crayfish (Pacifastacus leniusculus) in England - prospects for the white-clawed crayfish (Austropotamobius pallipes), in Holdich D. M. & Sibley P. J. (eds), Management & Conservation of Crayfish. Proceedings of a conference held in Nottingham on 7th November 2002. Environment Agency, Bristol: 127-138.

Hiruta 1996. The presence of signal crayfish in Hokkaido, Japan. Crayfish news - IAA Newsletter 19 (1): 12.

Hogger 1986a. A report ori some of the first introductions of Pacifastacus leniusculus into the U.K. Freshwater Crayfish 6: 134-145.

Hogger 1986b. Aspects of the introduction of "signal crayfish" Pacifastacus leniusculus (Dana), into southern United Kingdom. 1. Growth and survival. Aquaculture 58: 27-44.

Jussila & Mannonen 2004. Crayfisheries in Finland, a short overview. Bulletin français de la Péche et de la Pisciculture 372-373 [Craynet, volume 2]: 263-273.

Kawai & Hiruta 1999. Distribution of crayfish (Pacífastacus leniusculus and Cambaroides japonicus) in Lake Shikaribetsu and Shihoro, Hokkaido, Japan. Crayfish news - IAA Newsletter 21 (3): 11.

Kawai et al. 2002. Temporal changes of the density in two crayfish species, the native Cambaroides japonicus (De Haan) and the alien Pacifastocus leniusculus (Dana), in natural habitats of Hokkaido, Japan. Freshwater Crayfish 13: 198-206.

Kiszely 2004.

Kozak & Policar 2003. Practical elìmination of signal crayfish (Pacifastacus leniusculus) from a pond, in Holdich D. M. & Sibley P. J. (eds), Management & Conservation of Crayfish. Proceedings of a conference held in Nottingham on 7th November 2002. Environment Agency, Bristol: 200-208.

Lewis 2002. Pacifastacus, in Holdich D. M. (ed.), Biology al Freshwater Crayfish. Blackwell Science Ltd., Oxford: 511-540 + pl. 42.

Lewis & Horton 1997. Lite history and population dynamics of the signal crayfish, Pacifastacus leniusculus, in Lake Billy Chinook, Oregon. Freshwater Crayfish 11: 34-53.

Lilley et al. 1997. RAPD evidence for the origin of crayfish plague outbreaks in Britain. Aquaculture 157: 181-185.

Lowery & Holdich 1988. Pacifastacus leniusculus in North America and Europe, with details of the distribution of introduced and native crayfish species in Europe, in Holdich D. M. & Lowery R. S. (eds), Freshwater Biology, management and exploitation. Croom Helm, London: 283-3M

McGriff 1997. Growth, maturity, and fecundity of the crayfish, Pacifastacus leniusculus, from the Sacramento-San Joaquin Delta. California Fish and Game 69: 227-242.

Nylund & Westman 2000. The prevalence of crayfish plague (Aphanomyces astaci) in two signal crayfish (Pacifostocus leniusculus) populatíons in Finland. Journal of Crustacean Biology 20 (4): 777-785.

Peay 2005. PEAY S. 2005. Drastic action. Crayfish news - IAA Newsletter 27 (1): 5.

Peay & Rogers 1999. The peristaltic spread of signal crayfish (Pacifastacus leniusculus) in the River Wharfe, Yorkshire, England. Freshwater Crayfish 12: 665-676.

Quaglío et al. 2002a. Infestation of the branchiobdellidan, Xironogiton victoriensis (Annelida: Clitellata), on the signal crayfish (Pacifastacus leniusculus) from Auenbachl Creek, Alto Adige/Süd Tyrol, Italy. Freshwater Croyfish 13: 274-279.

Rallo et al. 2001. Relationship between changes in habitat conditíons and population density of an introduced population of signal crayfish (Pacifastacus leniusculus) in a fluvial system. Bulletin français de la Péche et de la Pisciculture 361 [n° spécial écrevisses, volume 3]: 643-657.

Rogers & Loveridge 2000.

Sibley 2000. Signal crayfish management in the River Wreake catchment, in Rogers D. & Brickland J. (eds), Crayfish Conference Leeds. Environment Agency, Leeds: 95-108.

Sibley 2002. Signal crayfish in Britain wíth reference to the Tweed catchment, in Invasives of the Tweed. Report of a seminar held in the Cross keys Hotel, Kelso on the 13th December 2001. Tweed Forum, Melrose: 25-41.

Stanton 2004. Burrowing behaviour and movements of the signal crayfish. Ph.D. Thesis, University of Leicester, Leicester, UK, 169 p.

Stebbing et al. 2003. Mating behaviour and evidence for a female released courtship pheromone in the signal crayfish Pacifastacus leniusculus. Journal of Chemical Ecology 29 (2): 463-473.

Stebbing et al. 2004. Reducing the threat: the potential use of pheromones to control invasive signal crayfish. Bulletin français de la Péche et de la Pisciculture 370-371 [Craynet, volume 1]: 219-224 (datato 2003, pubblicato 2004).

Stebbing et al. 2005. Evaluation of the capacity of pheromones far control of invasive non-native crayfish: part 2. English Nature, Peterborough, 46 p. (Research Report No 633).

Svärdson 1995. Early history of signal crayfish introduction into Europe. Freshwater Crayfish 8: 68-77.

Warner & Green 1995. Choice and consumption of aquatic weeds by sygnal crayfish (Pacifastacus leniusculus).

Warner et al. 1995. Signal crayfish (Pacifastacus leniusculus) feeding on pond snails, optimal foraging? Freshwater Crayfish 8: 352-359.

Westman 1995. Introductin of alien crayfish in the development of crayfish fisheries; experience with signal crayfish (Pacifastacus leniusculus (Dana)) in Finland and the impact on the native noble crayfish. Freshwater Crayfish 10: 1-17.

Westman et al. 2002. Replacement of the native crayfish Astacus astacus by the introduced species Pacifastacus leniusculus in a small, enclosed Finnish lake: a 30-year study. Ecography 25 (1): 57-73.

Wright & Williams 2000. Long term trapping of signal crayfish at Wixoe on the Ríver Stour, Essex, in Rogers D. & Brickland 1. (eds), Crayfish Conference Leeds. Environment Agency, Leeds: 81-88.


Le Faune Webmuseum Decapoda Astacidae Pacifastacus
www.ittiofauna.org
Google
 
contact: stefano.porcellotti@ittiofauna.org