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Opuntia ficus-indica Taxon Opuntia ficus-indica (L.) Mill. Family / Order / Phylum Cactaceae / Caryophyllales / Plantae COMMON NAMES (English only) Prickly-pear cacti Cactus pear Indian-fig prickly-pear SYNONYMS Cactus ficus-indica L. Opuntia ficus-barbarica A. Berger Opuntia megacantha Salm-Dyck SHORT DESCRIPTION This cactus can reach up to 2 m height. Succulent stems are flat, oval and segmented. Flowers 5-6 cm in diameter are orange. Fruits have the size and shape of a fig and are purple. It has a CAM physiology with very high water-use efficiency. BIOLOGY/ECOLOGY Dispersal mechanisms Seeds are dispersed by vertebrates such as birds, feral pigs and lizards that feed upon fruits. Many seedlings are found beneath trees used as Opuntia ficus-indica encroaching a shrub in southern perching for birds. Spain Reproduction Flowers are pollinated by insects. Seeds from Photo: Montserrat Vilà intact fruits and scats germinate after long rainy periods and warm temperatures (21º approximately). Vegetative reproduction from cladodes (flattered succulent segments stems) falling close to parental plants is also important for increasing local abundance. Known predators/herbivores Rodents are efficient seed predators. Livestock feed upon non-spiny varieties. Resistant stages (seeds, spores etc.) Seeds in the soil can remain viable for several years. Plants are resistant to high summer temperatures and strong coastal winds. HABITAT Native (EUNIS code) Semi-arid habitats Habitat occupied in invaded range (EUNIS code) B1: Coastal dune and sand habitats, B3:Rock cliffs, ledges and shores, including the supralittoral, F7: Spiny Mediterranean heaths (phrygana, hedgehog-heaths and related coastal cliff vegetation) , F8: Thermo-Atlantic xerophytic habitats, G3: Coniferous woodland, J6: Waste deposits. Habitat requirements Planted as a garden plant, it usually occurs close to buildings. It is mostly found in sunny, rocky and welldrained slopes. Rocks decrease diurnal variation in soil water availability and increase root growth and branching. Sensitive to freezing temperatures below -6ºC and tolerant to high temperatures up to 65ºC. Soil fertilization with N, P, Ca and K increases fruit production. Tolerant to moderate soil salinity. DISTRIBUTION Native Range Tropical America from Mexico to Colombia Known Introduced Range Mediterranean Basin, especially in islands, Macaronesia Islands, Australia, Tropical and Southern Africa, Western USA, Caribbean, temperate Asia, Seychelles and Hawaii. Trend There is increasing invasion in abandoned Mediterranean agricultural fields. Climatic models predict increasing productivity with climate warming and rising atmospheric CO2. MAP (European distribution) Known in country Legend Known in CGRS square Known in sea INTRODUCTION PATHWAY It was introduced by the Spanish conquerors between 1548 and 1570 for mass-rearing of the cochineal insect Dactylopius coccus (Homoptera: Dactylophdae) for the commercial production of a red dye. It is a long-domesticated cactus crop for fodder, stem (i.e. “nopal”) and fruit consumption. In Italy and Israel it is planted for fruit consumption. It is also used as an ornamental, planted as wind protection fencing, land reclamation and rehabilitation, and erosion control. IMPACT Ecosystem Impact Its spatial occupation competes with native species recruitment. Health and Social Impact Famous for the injury the spines can cause to animals and humans. Invaded woodlands are misperceived as typical Mediterranean landscapes. Economic Impact Invaded old-fields with spiny varieties interfere with sheep and cattle grazing. Organic acids accumulated during night on young stems might cause diarrhoea to livestock. MANAGEMENT Prevention Avoiding planting as an ornamental and dumping of plant debris in the wild. Mechanical Plants sprout vigorously after aerial biomass removal (i.e. fire, grazing, clipping). Successful regrowth can occur from any plant fragment. Chemical Summer glyphosate injection into cladodes or areas were it had been cut has been proved to be effective. Biological In Hawaii, Australia and South Africa there has been successful biological control by the Hemyptera Dactylopius opuntiae and to a lesser extend by the Lepidoptera Cactoblastis cactorum. REFERENCES DeFelice MS (2004) Prickly pear cactus, Opuntia spp. - A spine-tingling tale. Weed Tech. 18:869-877 Gimeno I, Vilà M (2002) Recruitment of two Opuntia species invading abandoned olives groves. Acta Oecologica 24:239-246 Vilà M, Burriel JA, Pino J et al (2003) Association between Opuntia spp. invasion and changes in land-cover in the Mediterranean region. Global Change Biol 9:1234-1239 OTHER REFERENCES Anneke DP, Moran VC (1978) Critical review of biological pest control in South Africa. 2. The prickly pear Opuntia ficus-indica (L.) Miller. J Entom Soc South Africa 41:161-188 Barbera G, Carimi F, Inglese P (1992) Past and present role of the indian-fig prickly-pear Opuntia ficus-indica (L. Miller Cactaceae) in the agriculture of Sicily. Econ Bot 46:10-20 Benson L, Walkington DL (1965) The southern Californian prickly pears. Invasion adulteration and trial by fire. Ann Miss Bot Gard 52:262-273 Brutsch I, Zimmermann H (1993) The prickly pear (Opuntia ficus-indica (Cactaceae) in South-Africa; utilization of the naturalized weed and the cultivated plants. Econ Bot 47:154-162 Cuti M, Nobel PS (1994) Gas exchange and growth responses to elevated CO2 and light levels in the CAM species Opuntia ficus-indica. Plant Cell Environ 17:935-944 Dean WRJ, Milton SJ (2000) Directed dispersal of Opuntia species in the Karoo South Africa: are crows the responsible agents? J Arid Environ 45:305-314 Drennan PM, Nobel PS (1998) Root growth dependence on soil temperature for Opuntia ficus-indica: influences of air temperature and a doubled CO2 concentration Func Ecol 12:959-964 García de Cortázar V, Nobel PS (1990) Worldwide environmental productivity indices and yield predictors for a CAM plant Opuntia ficus-indica including effects of doubled CO2 levels. Agric Forest Met 49:261-279 Gersani M, Graham E, Nobel PS (1993) Growth responses of individual roots of Opuntia ficus-indica to salinity. Plant Cell Environ 16:827-834 Galizzi FA, Felker P, González C, Gardier D (2004) Correlations between soil and cladode nutrient concentrations and fruit yield and quality in cactus pears Opuntia ficus-indica in a traditional farm setting in Argentina. J Arid Environ 59:115-132 Griffith MP (2004) The origins of an important cactus crop Opuntia ficus-indica (Cactaceae): New molecular evidence. Amer J Bot 91:1915-1921 Inglese P, Barbera G, La Mantia L (1995) Research strategies for the improvement of cactus pear (Opuntia ficusindica) fruit quality and production. J Arid Environ 29:455-468 Le Houérou HN (1996) The role of cacti (Opuntia spp.) in erosion control land reclamation rehabilitation and agricultural development in the Mediterranean Basin. J Arid Environ 33:135-159 Nobel PS (1988) Environmental biology of agaves and cacti. Cambridge University Press. London Nobel P, Hartsock T (1984) Physiological responses of Opuntia ficus-indica to growth temperature. Physiol Plant 60:98-105 Nobel PS, Miller PM, Gram EA (1992) Influence of rocks on soil-temperature soil-water potential and rooting patterns for desert succulents. Oecologia 92:90-96 Nobel PS, De la Barrera E 2003) Tolerances and acclimation to low and high temperatures for cladodes fruits and roots of a widely cultivated cactus Opuntia ficus-indica. New Phytol 157:271-279 Nogales M, Hernández EC, Valdés F (1999) Seed dispersal by common ravens Corvus corax among island habitats (Canarian Archipelago). Ecoscience 6:56-61 Monteiro A, Cheia VM, Vasconcelos T, Moreira I (2005) Management of the invasive species Opuntia stricta in a Botanical Reserve in Portugal. Weed Res 45:193-201 Reyes-Agüero JA, Aguirre JR, Valiente-Banuet A (2006) Reproductive biology of Opuntia: A review. J. Arid Environ 64:549-585 Samish YB, Ellern SJ (1975) Titratable acids in Opuntia ficus-indica L. J. Range Man 28:365-369 Vilà M, Gimeno I (2003) Seed predation of two alien Opuntia species in Mediterranean communities. Plant Ecol 167:1-8 Zimmermann HG, Moran VC (1991) Biological control of prickly pear Opuntia ficus-indica (Cactaceae) in South Africa. Agric Ecos Environ 37:29-35 Author: Montserrat Vilà Date Last Modified: October 4th, 2006