Ecología Y Diagnóstico De Enallodiplosis Discordis (Diptera: Cecidomyiidae): Un Nuevo Defoliador Ferozcon Repercusiones Directas En La Pérdida Del Bosqueseco De Prosopis Y Los
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Revista peruana de biología 27(4): 451 - 482 (2020) Ecología y diagnóstico de Enallodiplosis discordis doi: http://dx.doi.org/10.15381/rpb.v27i4.19200 (Diptera:Cecidomyiidae): un nuevo defoliador feroz ISSN-L 1561-0837; eISSN: 1727-9933 Universidad Nacional Mayor de San Marcos con repercusiones directas en la pérdida del bosque seco de Prosopis y los medios de vida en Perú Trabajos originales Presentado: 24/01/2020 Ecology and diagnosis of Enallodiplosis discordis (Diptera:Ce- Aceptado: 06/05/2020 Publicado online: 30/11/2020 cidomyiidae): A fierce new defoliator with direct repercus- Editor: sions for loss of Prosopis dry forest and livelihoods in Peru Autores Abstract Oliver Q. Whaley* 1, 2 The coastal desert of Peru and Chile is home to Prosopis (Leguminosae: Mimosoide- [email protected] ae) tree species that are exceptionally well-adapted to the hyperarid conditions 3 Consuelo Borda and keystone in dry-forest ecosystems. From 2001 to 2018, Prosopis in Peru have [email protected] 1 suffered widespread defoliation and die-back, with consequent deforestation and Justin Moat Prosop- [email protected] collapse in pod production. This paper reports a new insect plague species of https://orcid.org/0000-0002-5513-3615 is forest in Peru: Enallodiplosis discordis Gagné 1994 (Diptera: Cecidomyiidae) as a fiercely defoliating agent contributing to widespreadProsopis mortality. An analysis Tim Wilkinson 1 [email protected] of E. discordis larval taxonomy, life cycle and plague infestation, following El Niño https://orcid.org/0000-0003-1055-8318 Southern Oscillation (ENSO) 1998/99 is provided. Using distinct lines of evidence, Ana Bravo Sánchez 4 its spread, distribution, and ecology are examined. Over two decades of fieldwork, [email protected] Prosopis forest die-back and loss was observed devastating rural livelihoods and Raymond J. Gagné 5 ecosystem services across lowland regions of southern (Ica), central and northern [email protected] coastal Peru (Lambayeque, La Libertad, Piura). The collapse in production ofProsopis https://orcid.org/0000-0002-3464-757X pods (algarroba, huaranga) and honey was recorded. Supplementary notes pro- Correspondencia vide observations of: (i) plague development, changing land-use and climate, (ii) *Corresponding author biological and physical control of E. discordis, (iii) the moth Melipotisaff. indomita 1 Royal Botanic Gardens, Kew, Richmond, Surrey, (Lepidoptera: Noctuidae) as a concurrent defoliator of Prosopis. TW9 3AE, UK Resumen 2 Royal Botanic Garden Edinburgh, 20A Inverleith Row, Las regiones desérticas costeras del Pacífico de Perú y Chile albergan especies de Edinburgh, EH3 5LR, UK. Prosopis (Leguminosae: Mimosoideae), árboles bien adaptados a las condiciones 3 Asociación para la Niñez y su Ambiente (ANIA), del desierto y con funciones clave en los ecosistemas de bosques secos. Entre el Proyecto Kew-Peru. 2001 y 2017, Prosopis en Perú ha sufrido una extensiva defoliación y muerte regre- 4 Ingleby Farms & Forests, Peru. siva, con la consecuente deforestación y disminución de la producción de vainas 5 Systematic Entomology Laboratory, Agricultural de algarrobo. Aquí, se reporta una nueva especie de insecto plaga del bosque de Research Service, US Department of Agriculture, c/o Prosopis en Perú: Enallodiplosis discordis Gagné 1994 (Diptera: Cecidomyiidae), Smithsonian Institution MRC-168, PO Box 37012, una feroz especie defoliadora que contribuye a la mortalidad generalizada de Washington, DC 20013-7012, USA. Prosopis. Se proporciona un análisis de la taxonomía larvaria de E. discordis, ciclo de vida y la infestación ocurrida después de El Niño Oscilación del Sur (ENSO) 1998/99. Su dispersión, distribución y ecología es examinada utilizando distintas líneas de evidencia. Durante casi dos décadas de trabajo de campo, se observó la muerte regresiva del bosque de Prosopis devastando los medios de vida rurales y los servicios de los ecosistemas en las regiones de las tierras bajas del sur (Ica), el Citación centro y el norte de la costa peruana (Lambayeque, La Libertad, Piura). El colapso en la producción de vainas de Prosopis (algarroba, huaranga) y miel también fue Whaley OQ, Borda C, Moat J, Wilkinson T, Bravo Sánchez A, Gagné RJ. 2020. Ecology and registrada. Las notas complementarias proporcionan observaciones sobre: (i) diagnosis of Enallodiplosis discordis (Dip- el desarrollo de la plaga y el cambio de uso de la tierra y el clima, (ii) el control tera:Cecidomyiidae): A fierce new defoli- biológico y físico deE. discordis, (iii) la polilla Melipotisaff. indomita (Lepidoptera: ator with direct repercussions for loss of Noctuidae) como defoliador concurrente de Prosopis. Prosopis dry forest and livelihoods in Peru. Revista peruana de biología 27(3): 451 - Keywords: 482 (November 2020). doi: http://dx.doi. Algarrobo; ENSO; forest plagues; gall midge; Melipotis. org/10.15381/rpb.v27i4.19200 Palabras clave: Algarrobo; ENOS; plagas forestales; moscas de las agallas; Melipotis. ____________________________________________________________ Journal home page: http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/index © Los autores. Este artículo es publicado por la Revista Peruana de Biología de la Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos. Este es un artículo de acceso abierto, distribuido bajo los términos de la Licencia Creative Commons Atribución-NoComercial- CompartirIgual 4.0 Internacional.(http://creativecommons.org/licenses/by-nc-sa/4.0/), que permite el uso no comercial, distribución y repro- ducción en cualquier medio, siempre que la obra original sea debidamente citada. Para uso comercial póngase en contacto con: revistaperuana. [email protected] 451 Whaley et al. Introduction al. 2012). Prosopis in Peru are highly variable with hu- man selection, hybridisation and translocation since the The genus Prosopis (Leguminosae: Mimosoideae) dawn of pre-Columbian history (Whaley et al comprises approximately 45 tree and shrub species, dis- . hereafter, we simply use ‘ ’ to encompass all the tributed across arid and semiarid environments of the Prosopis coastal Peruvian species, forms and varieties. 2019); so Americas, Africa and Asia (Burkhart 1976, Catalano et Prosopis al. 2008), most of which have high economic and eco- The heterogeneous architecture of Prosopis, together logical importance (e.g. Simpson 1977, Pasiecznik 2001, Catalano et al. 2008). Around 39 South American species multiple niches for insect species in arid conditions have a centre of diversity in Chaco (Argentina, Bolivia, (Simpsonwith its prolific 1977, provisionNúñez-Sacarías of nectar 1993). and Althoughfruits provides most Paraguay around 27 species). Around six to seven spe- insects are naturally associated with the tree, due to their prevalence and economic potential Prosopis insects and Peru, with a wide diversity of landraces and local pu- tativecies, are hybrids, found creatingin the arid taxonomic Pacific western confusion side (Burkhart of Chile - 1976, Brücher 2012, Whaley et al. 2019). ciatedhave often with beenPeruvian categorised coastal Prosopisas plagues species in Peru reported (Díaz 176Celis species 1977, 1995,in Ica andDíaz Piura 1997). regions, A study from of 1991insects to 1993asso The coast of Peru is recognised as part of one of the - world’s oldest and driest deserts (Hartley et al. 2005), ura recorded 129 species (Juárez et al. 2016). where plants derive moisture from fog and seasonal An- (Núñez-Sacarías 1993), whilst a site-specific study in Pi Gall midges in forest and Prosopis trees Whaley et al.2010b). West of the Andean mountain chain, dean fluvial influx (e.g. Péfaur 1982, Dillon et al. 1991, Enallodiplosis discordis belongs to the gall midge - around 3200 kilometres, through Peru, north and central icance and role of many species in forest ecosystems Chile.aridity A dominates trend to hyperaridity the length increasesof the Pacific towards seaboard the 18°S for isfamily unknown. (Diptera: As Cecidomyiidae),many Cecidomyiidae where are the small true inconsignif- latitude - the ‘arid divide’. The aridity traverses the Andes to Bolivia and Argentina, to form a diagonal swathe from andspicuous widespread flies they components can easily of beforest overlooked and agricultur (Gagné- biome, Prosopis 1994, Skuhravá 2005), but doubtlessly are significant componentPacific Equatorial of the vegetation.dry forest toIn Chaco;Peru especially, throughout Prosop this- et al. 2016), with many forest species still undescribed is are the dominant is frequently species (Ferreyrathe key arboreal 1987, Whaleyhardwood et (Jaschhofal ecosystems & Jaschhof (see e.g. 2014). Cilbircioğlu Cecidomyiidae 2009, Altamirano biology is al. 2010a,b, Beresford-Jones 2011, Whaley et al. 2019) varied but many are gall-formers, hence their common where–as phreatophytes–they are resilient to prolonged aridity whilst also adapted to fog capture (Whaley et al. 2010b). Prosopis name; some are fungivorous, free-living phytophages or- south America or ‘huarango’ in southern Peru) are mul- predators. Gall midges may constitute the largest family ti-use species, and trees throughout (frequently human called history ‘algarrobo’ have pro in- of flies (Gagné 1994) with more than 6,590 species de vided essential resources of forage, food and fuel (Beres- scribedLittle (Gagné research & Jaschhof has been 2017). conducted on gall midges ford-Jones et al. 2009). All their biomass can be used and in Prosopis, although a few studies have focused on the many species adapt well to silvopastoral and agroforestry