First record of Pontederia cordata L. (Pontederiaceae) in southern Spain and risk assessment for Europe

Pontederia cordata L. (Pontederiaceae) is an emerging aquatic plant native to the American continent that has been introduced to various continents through longdistance commerce as an ornamental plant. Individuals growing in the wild belonging to Pontederia L. genus where found in South Spain. The analysis of diagnostic characters of the collected specimens and their comparison to those represented in herbarium vouchers allowed us to distinguish them from its closest relative, P. sagittata C. Presl and to assign all the specimens found at the locality to P. cordata L. This is the southernmost European record of the species. It was clear that the origin of the introduction was the use as ornamental aquatic plant in the area. Its invasion risk was assessed for Europe, firstly, by analysing the suitability of European climate for the species, secondly, by assessing the potential impact. Results showed that from 92.5 to 92.9% of the meteorological stations analysed showed climate conditions that were compatible with the species' climatic requirements. The ecological characteristics of the species and the climatic features of the area analysed suggest a great risk of invasion that could lead to the species' spread in Europe. These findings suggest that P. cordata could threaten European wetlands

Traps and netting, better together than alone: an innovative approach to improveProcambarus clarkiimanagement

The red swamp crayfishProcambarus clarkiiis the most widespread invasive crayfish in Europe, and responsible for a plethora of negative impacts on aquatic ecosystems. Most capture methods used for controlling crayfish populations have a bias towards the capture of adults, however, the removal of the young-of-the-year crayfish (YOY) may be essential for achieving effective control of invasive populations. This paper analysed the crayfish caught during a management campaign carried out in five permanent stream pools from southern Spain. We compared size structure, CPUE and sex-ratio obtained with two control methods: cylindrical traps (a method commonly used in crayfish management) and horizontal hauls using a fine-mesh net (inspired by zooplankton sampling techniques). Horizontal hauls showed a higher selectivity for catching YOY and higher efficiency (eight-fold) than traps. The combined use of both gears increased total catch by 46%. Our results suggest that YOY may be sharply underestimated if only cylindrical traps are used. The YOY cohort represented 60% of the total catch during the management campaign. Therefore, active netting with a fine mesh may be a complementary method to the use of traps in order to manage invasive populations ofP. clarkiiand may provide a better understanding of the structure and dynamics of invasive crayfish populations

Aportaciones a la flora de la provincia de Segovia (España) II

Se presentan en este trabajo datos de interés florístico y corológico, referentes a dieciocho especies de plantas fanerógamas, para la comunidad de Castilla y León, la mayoría alóctonas o xenófitas. Se citan por primera vez en la provincia de Segovia Polycarpon tetraphyllum, Papaver somniferum, Wisteria sinensis, Coriandrum sativum, Origanum majorana, Salpichroa origanifolia, Buddleja davidii, Orobanche rapun-genistae, Lonicera japonica, Aster novi-belgii, Galinsoga parviflora, Cosmos bipinnatus y Artemisia verlotiorum. Es novedad para la provincia de Valladolid Crataegus azarolus, y se cita por primera vez en la provincia de Soria Buddleja davidii. Consolida ajacis, Ipomoea purpurea, Solanum physalifolium var. nitidibaccatum y Gaillardia aristata requieren algún tipo de aclaración en lo que concierne a su status en las provincias de Segovia y Palencia. Para dieciséis de las especies se aportan mapas corológicos con indicación de la presencia a nivel de cuadrícula UTM de 10 x 10 km

Sobre la presencia de cactáceas naturalizadas en la costa meridional de Cataluña

The authors report on the finding of eight new alien cacti naturalised in the Baix Camp (Tarragona). Three of these are new records for Europe, two are new records for Spain and one is a first record for Tarragona province. Two further species are not new floristic records however some revision of their status in Catalonia is required. Discussed is the extensive use of alien plant species in garden design in the area and the mildness of the local climatic conditions which has resulted in the greatest accumulation of naturalised cacti in Europe.En una riera de la comarca del Baix Camp (Tarragona) hemos encontrado ocho especies de cactáceas alóctonas naturalizadas. De ellas, tres son nuevas para Europa, dos nuevas para España, una nueva para la provincia de Tarragona y, finalmente, otras dos sin ser novedad florística requieren aclaraciones en lo concerniente a su estatus en Cataluña. Este hallazgo representa la mayor biodiversidad de cactáceas citada hasta el momento para toda Cataluña, para toda la Península Ibérica e incluso para toda Europa. La introducción de especies exóticas en general y de cactáceas en particular se ve favorecida en esta comarca de la costa mediterránea por el desarrollo de una jardinería basada casi exclusivamente en elementos foráneos y en la existencia de una climatología muy favorable

Pistia stratiotes L. (Araceae) una planta acuática exótica en las proximidades del Parque Nacional de Doñana (SW España).

Pistia stratiotes L. (Araceae) an aquatic exotic plant in the neighborhood of Doñana National Park (SW Spain)Palabras clave. Pistia, plantas invasoras, macrófitos acuáticos, Doñana, España.Key words. Pistia, invasive plants, aquatic macrophytes, Doñana, Spain

Nueva localidad de Bulinus truncatus (Audouin, 1827) (Gastropoda: Planorbidae), hospedador intermediario de Schistosoma haematobium, y su distribución en la península Ibérica

This paper reports a new population of Bulinus truncatus (Audouin, 1827) (Gastropoda, Planorbidae) found in the province of Almería (Southeast Spain). B. truncatus is an intermediate host of Schistosoma haematobium, the trematode which causes urinary schistosomiasis in humans. Individuals were identified to species level by double-nested PCR, resulting in 100% homology. This population is located under the driest climate conditions of the Iberian Peninsula. Data on the distribution of this species in the Iberian Peninsula was gathered and is provided in this paper. Improved knowledge of the distribution of Bulinus truncatus is key to assess the risk of new outbreaks of schistosomiasis in the Iberian Peninsula.En este trabajo se reporta una nueva población de Bulinus truncatus (Audouin, 1827) (Gastropoda, Planorbidae) en la provincia de Almería (Sureste de España). Se trata de una especie que presenta considerable interés tanto zoológico como epidemiológico por su papel como hospedador intermediario de Schistosoma haematobium, responsable de la esquistosomiasis urogenital humana. Los ejemplares fueron determinados a nivel específico mediante PCR doble anidada, con un 100% de homología. Se trata de la población localizada más al Sureste y en condiciones de mayor aridez en la península Ibérica. Se recopilaron los datos de presencia publicados para conocer su distribución en la península. El conocimiento de la distribución de Bulinus truncatus es una pieza clave para evaluar el riesgo de nuevos focos de esquistosomiasis en la península Ibérica

Ipomoea imperati (Vahl) Griseb. (Convolvulaceae): nuevo xenófito invasor en la provincia de Cádiz (Sur de España)

The first records of Ipomoea imperati (Vahl) Griseb (Convolvulaceae) in the province of Cádiz are documented. This rhizomatous and creeping species is native to North America. I. imperati was found as incipient naturalized populations (between 300-750 m2) on beaches from Barbate and Algeciras municipalities. In both cases, I. imperati colonizes shifting (yellow) dunes with different levels of development. The origin of the introduction is uncertain. The risk assessment resulted in a high risk of invasion of habitats of Community interestSe documentan los primeros registros de Ipomoea imperati (Vahl) Griseb. (Convolvulaceae) en la provincia de Cádiz. Esta especie rizomatosa y rastrera es nativa de Norteamérica y se ha encontrado formando poblaciones naturalizadas incipientes (entre 300 - 750 m2 ) en playas de los municipios de Barbate y Algeciras. Ipomoea imperati coloniza en ambos casos dunas móviles con diferente grado de desarrollo. El origen de la introducción es incierto. La evaluación del riesgo sugiere un riesgo alto de invasión, pudiendo extenderse la invasión sobre hábitats de interés comunitario.

Fig. 1 in Stenopelmus rufinasus Gyllenhal 1836 (Coleoptera: Erirhinidae) Naturalized in Spain

Fig. 1. Po River, NW Italy; circle indicates the sample site (left). The hyporheic trap used to sample interstitial invertebrates (right).Published as part of <i>Dana, Elías D. & Viva, S., 2006, Stenopelmus rufinasus Gyllenhal 1836 (Coleoptera: Erirhinidae) Naturalized in Spain, pp. 41-42 in The Coleopterists Bulletin 60 (1)</i> on page 38, DOI: 10.1649/881.1, <a href="http://zenodo.org/record/10106494">http://zenodo.org/record/10106494</a&gt

Stenopelmus rufinasus Gyllenhal 1836 (Coleoptera: Erirhinidae) Naturalized in Spain

Dana, Elías D., Viva, S. (2006): Stenopelmus rufinasus Gyllenhal 1836 (Coleoptera: Erirhinidae) Naturalized in Spain. The Coleopterists Bulletin 60 (1): 41-42, DOI: 10.1649/881.1, URL: http://dx.doi.org/10.1649/881.