The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T151722A554113 Polaskia chende Assessment by: Arias, S., Valverde, T. & Zavala-Hurtado, A. View on www.iucnredlist.org Citation: Arias, S., Valverde, T. & Zavala-Hurtado, A. 2013. Polaskia chende. The IUCN Red List of Threatened Species 2013: e.T151722A554113. http://dx.doi.org/10.2305/IUCN.UK.2013- 1.RLTS.T151722A554113.en Copyright: © 2015 International Union for Conservation of Nature and Natural Resources Reproduction of this publication for educational or other non-commercial purposes is authorized without prior written permission from the copyright holder provided the source is fully acknowledged. Reproduction of this publication for resale, reposting or other commercial purposes is prohibited without prior written permission from the copyright holder. For further details see Terms of Use. The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas A&M University; Wildscreen; and Zoological Society of London. If you see any errors or have any questions or suggestions on what is shown in this document, please provide us with feedback so that we can correct or extend the information provided. THE IUCN RED LIST OF THREATENED SPECIES™ Taxonomy Kingdom Phylum Class Order Family Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae Taxon Name: Polaskia chende (Rol-.Goss.) A.C.Gibson & K.E.Horak Synonym(s): • Cereus chende Rol-.Goss. Taxonomic Source(s): Hunt, D., Taylor, N. and Charles, G. (compilers and editors). 2006. The New Cactus Lexicon. dh Books, Milborne Port, UK. Assessment Information Red List Category & Criteria: Least Concern ver 3.1 Year Published: 2013 Date Assessed: April 29, 2009 Justification: Polaskia chende is a relatively widespread and abundant species, experiencing no known direct threats or continued decline. Hence, it is listed as Least Concern. Geographic Range Range Description: This species is endemic to the Mexican States of Oaxaca and Puebla, where it is limited to the Tehuacán- Cuicatlán region. It grows at elevations of 1,500 to 2,000 m asl (Arias et al. 1997). Country Occurrence: Native: Mexico (Oaxaca, Puebla) © The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 1 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Population The density of the species varies throughout its range from five to 62 individuals per hectare (Mandujano et al. 2004). Current Population Trend: Stable Habitat and Ecology (see Appendix for additional information) The species occurs in xerophyllous scrub and riparian vegetation. It flowers between August and January (Arias et al. 1997). Studies comparing the genetic variability between managed and wild populations of P. chende show that there are no significant differences, showing that management can be effective for the conservation of the genetic variability of the species (Blancas et al. 2006). Systems: Terrestrial Use and Trade (see Appendix for additional information) The fruits are edible and consumed locally (Arias et al. 1997). Threats There are no major threats to the species. Many subpopulations are stable because the species is locally managed and preserved for its edible fruits, however, other subpopulations may be affected by land use change and fragmentation. Conservation Actions (see Appendix for additional information) The species occurs within the Tehuacán-Cuicatlán Biosphere Reserve (Mandujano et al. 2004). Credits Assessor(s): Arias, S., Valverde, T. & Zavala-Hurtado, A. Reviewer(s): Superina, M. & Goettsch, B.K. Facilitators(s) and Goettsch, B.K. Compiler(s): © The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 2 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Bibliography Arias, M.S., Gama, S. and Guzmán, U. 1997. Flora del Valle de Tehuacán-Cuicatlán. Fasículo 14. Cactaceae A.L. Juss. Instituto de Biología, UNAM, Mexico. Blancas, J.J., F. Parra, J.D. Lucio, M.E. Ruíz-Durán, E. Pérez-Negrón, A. Otero-Arnaiz, N. Pérez-Nasser & A. Casas. 2006. Manejo tradicional y conservación de la biodiversidad de Polaskia spp. (Cactaceae) en México. Zonas Áridas 10. IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: http://www.iucnredlist.org. (Accessed: 12 June 2013). Mandujano, M. del C., J. Golubov, C. Rodríguez-Ortega, J. Reyes, G. Aguilar & M. Rojas-Arechiga. 2004. Estructura poblacionla y distribución de poblaciones de Polaskia chende (Gosselin) Backeb., en un municipio dentro de la Reserva de la Biosfera de Tehuacán-Cuicatlán. Cactáceas y Suculentas Mexicanas 49(2): 36-60. Citation Arias, S., Valverde, T. & Zavala-Hurtado, A. 2013. Polaskia chende. The IUCN Red List of Threatened Species 2013: e.T151722A554113. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Disclaimer To make use of this information, please check the Terms of Use. External Resources For Images and External Links to Additional Information, please see the Red List website. © The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 3 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Appendix Habitats (http://www.iucnredlist.org/technical-documents/classification-schemes) Major Season Suitability Habitat Importance? 3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry Resident Suitable Yes Use and Trade (http://www.iucnredlist.org/technical-documents/classification-schemes) End Use Local National International Food - human Yes No No Conservation Actions in Place (http://www.iucnredlist.org/technical-documents/classification-schemes) Conservation Actions in Place In-Place Land/Water Protection and Management Occur in at least one PA: Yes In-Place Education Included in international legislation: Yes Subject to any international management/trade controls: Yes Research Needed (http://www.iucnredlist.org/technical-documents/classification-schemes) Research Needed 1. Research -> 1.2. Population size, distribution & trends 1. Research -> 1.3. Life history & ecology Additional Data Fields Distribution Estimated extent of occurrence (EOO) (km²): 10000 Lower elevation limit (m): 1500 Upper elevation limit (m): 2000 © The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 4 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Population Population severely fragmented: No © The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 5 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T151722A554113 The IUCN Red List Partnership The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas A&M University; Wildscreen; and Zoological Society of London. THE IUCN RED LIST OF THREATENED SPECIES™ © The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 6 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en.