Guía ilustrada para la identificación de las familias y los géneros de los Anfípodos del suborden Gammaridea de la Península Ibérica

Abstract

IntroducciónLos anfípodos son un grupo de pequeños crustá-ceos que pueden vivir en hábitats muy diferentes. Pueden encontrarse en el mar, en el ambiente estuarino, en las aguas dulces, tanto epígeas como hipó-geas, e incluso en ciertas zonas húmedas del ambiente terrestre, como por ejemplo en los invernaderos. Su distribución biogeográfica abarca desde las aguas frías polares hasta las de los trópi-cos. En cuanto a su distribución batimétrica, cabe señalar que se extienden desde el humus húmedo del suelo de algunos bosques hasta los grandes abismos marinos.En la actualidad se conocen más de 6000 especies. Este elevado número de especies, unido a su pequeño tamaño y a su enorme abundancia en el ambiente acuático, ha motivado que frecuentemen-* Centro de Investigaciones Marinas. Universidad de La Habana. Cuba. cim@comuh.uh.cu ** Dpto. Biol. Animal (Invertebrados). Facultad de Biología. Universidad de Barcelona. España. ajimeno@pie.xtec.es M. Ortiz * y A. Jimeno ** RESUMEN Se trata de una guía ilustrada para la identificación de las Familias y los Géneros de los anfípodos del Suborden Gammaridea de la Península Ibérica. Abarca 40 Familias y 142 Géneros. Se inicia con una clave maestra de 10 láminas ilustradas que permite identificar las diferentes Familias. Siguen 66 láminas con numerosos dibujos que permiten confirmar las Familias e identificar los Géneros. El uso de imágenes evita los problemas de terminología y de subjetividad de las claves dicotómicas tradicionales. Palabras clave: Sistemática, Crustacea, Amphipoda, Gammaridea, Guía ilustrada, Península Iberica. ABSTRACT Pictorial guide for the identification of the families and genera of Gammaridea Amphipods of the Iberian PeninsulaAn original pictorial guide for the identification of the Families and Genera of the amphipod crustaceans of the Sub Order Gammaridea, from the Iberian Peninsula is presented. The guide includes a total of 40 Families and 142 Genera. When using the guide, it is necessary only, to compare the specimen to be classified with a Master key of 10 plates, for the Family identification. The Master Key is followed by an alphabetically ordered 66 plates, which allow to confirm the Families, and to select the Genera. This system, avoid problems of terminology, and the subjectivity of the classical dichotomic keys.

Strong seasonal effects of waterbirds on benthic communities in shallow lakes

“…We passed each sample later through a 250-mm-mesh sieve, sorted invertebrates retained on the sieve into taxonomic groups, and counted them with the aid of a binocular microscope. We identified invertebrates to the lowest possible taxonomic level (species level in some cases) with the following keys and help from specialists (see Acknowledgements): Fauvel (1923Fauvel ( , 1927, Argano (1979), Ghetti and McKenzie (1981), Castello (1986), Holthe (1986), Jansson (1986), Askew (1988), Ruffo (1982), Ortiz and Jimeno (2001), and Tachet et al (2003). To quantify the dry mass of each sample, we dried invertebrates for 24 h at 80uC and weighed them to the nearest 0.0001 g. When samples weighed less than the minimum measurable value (0.0001 g), we assumed a mass ½ of this value (0.00005 g).…”

Macrofaunal assemblages associated with two common seagrass‐dwelling demosponges (Amorphinopsis atlantica and Haliclona implexiformis) in a tropical estuarine system of the southern Gulf of Mexico

“…The organisms were fixed with 4 % formaldehyde 24 h before being transferred to 70% alcohol for preservation. The macroinvertebrates were identified to the lowest taxonomic level possible using specialized faunal guides for the region [22][23][24][25][26][27][28]. Then, individuals of each species were counted, and the abundance was expressed as the total number of individuals per sponge, and the density as the average (± SD) number of individuals per liter of sponge tissue.…”

Inventario de Amphipoda (Peracarida: Senticaudata y Amphilochidea) del Río Miño Internacional, Península Ibérica

“…Apart from pioneer European Amphipoda systematic works covering some specific areas like Bate & Westwood (1863) and Lincoln (1979) for British Isles, Sars (1895) and Stephensen (1923aStephensen ( , 1923bStephensen ( , 1931 for Norway, Stebbing (1906) compilation or Chevreux & Fage (1925) work on French amphipods, modern and comprehensive monographs based on local fauna are still far from completion and an enormous amount of work is still needed to meet the requirements of modern taxonomy. Portuguese amphipod fauna remains poorly studied with few dedicated surveys (van Maren, 1975;Marques and Bellan-Santini, 1987, 1990, 1991, 1993Ortiz & Jimeno, 2001;d'Udekem d'Acoz, 2010;Carvalho et al, 2012;Plicanti et al, 2017;Cabezas et al, 2022), despite recent ecological studies (Cunha et al, 1999(Cunha et al, , 2011Pereira et al, 2006;Izquierdo & Guerra-García, 2011;Guerra-García et al, 2012;Martins et al, 2013;Sampaio et al, 2016;Dauvin et al, 2021). In this study we provide an overview on Amphipoda fauna collected on the Minho River estuary (with brief diagnosis, ecological notes, global and Portuguese distributions), belonging to 34 species, in which 23 are new records for the Minho River (including one new record for Portugal).…”