• Proposed
  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Boletus dupainii Boud.

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Scientific name
Boletus dupainii
Author
Boud.
Common names
hríb Dupainov
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Boletales
Family
Boletaceae
Assessment status
Under Assessment
Proposed by
Claudia Perini
Assessors
Ivona Kautmanova
Contributors
João Baptista-Ferreira, Michael Krikorev, Vladimír Kunca, Claudia Perini, Tatyana Svetasheva
Comments etc.
Anders Dahlberg, Tommy Knutsson, Thomas Læssøe, Ibai Olariaga Ibarguren

Assessment Status Notes

Taxonomic notes

Extraeuropean findings are known from the Russian Far East and North America, however these encounters need confirmation for conspecificity by molecular techniques. Boletus reichertii described from Israel seems very close to Boletus dupainii and needs further study.


Why suggested for a Global Red List Assessment?

Easy to recognize with a blood-red, as lacquered looking cap and strongly colour-changing flesh from yellow pale to blue, but has high fluctuation in production of fruitbodies and/or seems rare; is mycorrhizal with frondose trees in warm, calcareous woods (Castanea, Fagus, Quercus), preferring more open habitats; threats are changing of habitat by fire, clearcutting, coniferous plantation. Redlisted in various European countries and just proposed for appendix of endangered species of Bern Conventions. 
Because of insufficient data on taxonomy and ecology of non-European records, it is evaluated at European level.
Preliminary global red-list assessment: VU (A2c+3c), population reduction probably higher than 30% in the past 50 years because of decline of habitat quality, caused by replanting native oak forests by conifers (Pinus nigra etc.) and spreading of invasive Robinia pseudacacia. Loss of habitat will probably continue and may not be reversible in next 50 years. Evaluation period is 50 years (3 generations) as recommended by Dahlberg & Mueller (2011).  European population probably exceeds 20 000 mature individuals. Cause of decline: replanting of native oak and other deciduous forests by conifers (Pinus nigra a.o.) and spreading of invasive Robinia pseudacacia, because of clear cutting and inappropriate forest management.


Geographic range

Native and probably restricted to Europe, present principally in central-southern countries.
Over the last decade or so, North American collections have been identified in North Carolina (Bessette, Roody 2007) and Iowa, and in Central America, in Belize (Kuo 2013) where it is treated as rare species.  Whether or not the New World version of Boletus dupainii is actually the same phylogenetic species as the original European species remains to be seen; DNA testing would be required.


Population and Trends

B. dupainii is known from xerothermous broadleaved forest of South and Central Europe, northernmost border in Germany and Slovakia. In all countries of its occurrence it is considered rare and threatened by the loss of habitat, which probably exceeded 30 % in whole area and is still declining. This process is in many cases irreversible in next 50 years, as original habitat has been replaced by non native or invasive species.
Redlisted in six countries.

Population Trend: Deteriorating


Habitat and Ecology

Mycorrhizal with frondose trees in warm, xerothermophilous woods (Castanea, Fagus, Quercus, Carpinus), sometimes preferring more open areas.  Often accompanied by other rare Boletales species (B. fechtneri, B. lupinus, B. rgodoxanthus). Due to global warming effect probably slowly spreading northwards, finding suitable habitats in oak and beech forests of Central Europe.

Temperate Forest

Threats

1. Habitat Loss/Degradation 1.2. Land management of non-agricultural areas 1.2.1 Abandonment 1.2.2. Change of management regime 1.2.3. Other 1.3. Extraction 1.3.3. Wood 1.3.3.3. Clear-cutting. 1.7. Fires
10. Human disturbance 10.5. Fire

Agro-industry plantationsRenewable energyUnintentional effects: large scale (species being assessed is not the target) [harvest]

Conservation Actions

The species is redlisted or protected by law in most of the countries of its occurrence. Some of the sites are protected as nature reserves. For the future of the species it is necessary to maintain and protect sites of its occurrence with natural habitats of old grown broad-leaved forests.

Site/area protection

Research needed

Specimens from Russian Far east and North America need molecular evaluation to confirm whether they belong to the same same species as European B. dupainii.
More detailed research on real decline of broad-leaved forests in Southern and Central Europe is needed as well as monitoring of recent known populations of the species.

TaxonomyPopulation size, distribution & trendsPopulation trendsHabitat trends

Bibliography

ANTONINI D., ANTONINI M., 2006 – Libro rosso dei macromiceti della Toscana. Dal censimento alla Red List. ARSIA-AGMT; Campi Bisenzio (FI), pp. 350.
DAHLBERG A., CRONEBORG H. (eds), 2003 - 33 threatened fungi. Complementary and revised information on candidates for listing in Appendix 1 of the Bern Convention. EU DG
PERINI C., VENTURELLA G., 2008 – “Flora da conservare – Funghi”: Boletus dupainii Boud, e Psathyrella ammophila (Durieu et Lév.) P.D.Orton. Informatore Botanico Italiano 40 (1): 149-153.
Sesli, E. & Denchev, C.M. 2014. Checklists of the myxomycetes, larger ascomycetes, and larger
basidiomycetes in Turkey. 6th edn. Mycotaxon Checklists Online (http://www.mycotaxon.com/resources/checklists/sesli-v106-checklist.pdf):
Alessio, C.L. 1985. Boletus Dill. ex L. (sensu lato). – In: Fungi Europaei. Vol. 2. Pp. 1–705. Libreria editrice Biella Giovanna, Saronno.
Boudier, J.L.É. 1902. Champignons nouveaux de France. – Bulletin Trimestriel de la Société Mycologique de France 18: 137–146.
Breitenbach J. & Kränzlin F. 1991. Pilze der Schweiz. Bd. 3(1). Röhrlinge und Blätterpilze. Verlag Mykologia, Luzern.
Engel, H., Krieglsteiner, G., Dermek, A. & Watling, R. 1983. Dickröhrlinge. Die Gattung Boletus in Europa. Verlag Heinz Engel, Weidhausen b. Coburg.
Estadès, A. & Lannoy, G. 2004. Les bolets européens. – Bulletin Mycologique et Botanique Dauphiné-Savoie 44(3): 3–79.
Galli, R. 1998. I Boleti. Atlante pratico-monographico per la determinazione dei boleti. Edinatura, Milano.
Lannoy, G. & Estadès, A. 2001. Les Bolets. Flore mycologique d’Europe. Documents Mycologiques Mémoire Hors série no. 6. Pp. 1–163. Association d’Écologie et de Mycologie, Lille.
McConnell, O.L. & Both, E.E. 2002. Boletus dupainii in North America. – Field Mycology 3: 14–15.
Muñoz, J.A. 2005. Boletus s. l. – In: Fungi Europaei. Vol. 1. Pp. 1–951. Edizioni Candusso, Alassio.
Pilát, A. & Dermek, A. 1974. Hríbovité huby. Československé hríbovité a sliziakovité huby (Boletaceae – Gomphidiaceae). Veda, Bratislava.
Šutara, J., Mikšík, M. & Janda, V. 2009. Hřibovité houby. Čeled’ Boletaceae a rody Gyrodon, Gyroporus, Boletinus a Suillus. Academia, Praha.
Bessette AE, Roody WC. (2007). Mushrooms of the Southeastern United States. Syracuse, New York: Syracuse University Press. p. 213.
Kuo, M. (2013, December). Boletus dupainii. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/boletus_dupainii.html


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted