Espinosa-Gutiérrez, J.M.

Fernández-de-Puelles, M.L. (María Luz)

Fraile-Nuez, E. (Eugenio)

García-Talavera, F.

Hernández-Martín, F.

Lozano-Soldevilla, F.

Muñoz-Ortín, B.

Peñalver-Puertas, M.J.

Vera, A. de

English

Fraile-Nuez, Eugenio

Lozano-Soldevilla, Fernando

Fernández-de-Puelles, María Luz

García-Talavera, Francisco

Digital.CSIC

Analysis in pre and post eruptive periods of zooplankton from La Restinga (SW-El Hierro, Canary Islands). VULCANO project

Lozano-Soldevilla, F. (Fernando)

García-Talavera, F. (Francisco)

Repositorio Institucional Digital del IEO

REFERENCESHERNÁNDEZ, F. & S. JIMÉNEZ, 1992. Observations on the Chaetognatha colected to the SW of El Hiero (Canary Islands) (Project TFMCBM/91). Bol. Mus. Mun. Funchal 44(243):181-192.DE VERA, A., R. SEAPY & F. HERNÁNDEZ (2006). Heteropod moluscs from waters around the Selvagens Islands (Gastropoda: Carinarioidea). Vieraea 34: 33-43.HERNÁNDEZ, F. & A. DE VERA, 2011. Observaciones sobre el neuston de El Hiero (islas Canarias), campaña TFMCBM/2009. Vieraea 39: 2013-214.HERNÁNDEZ, F. & S. JIMÉNEZ, 1992. Moluscos de la campaña TFMCBM/91 (El Hiero). Bol. Inst. Esp. Oceanogr., 8(2):355-359.HERNÁNDEZ, F., 1985. Observations on the Chaetognaths colected at a station to the south of the island of El Hiero (Canary Islands). Bocagiana (89):1-10.Table I. List  of chaetognath species and specimens per sampling station. Stations 3,4 and 5: East El Hiero; 31, 32 and 33: Northwest of El Hiero; 20, 21 and 22 West of El Hiero.Table II. List of species and specimens of moluscs from sampling station. Stations 3,4 and 5: East El Hiero; 31, 32 and 33: Northwest of El Hiero; 20, 21 and 22 West of El Hiero.Table I. Number of identified specimens of each of the groups studied during the first cruise of VULCANO Project.Analysis in pre and post eruptive periods of zooplankton from La Restinga (SW-El Hierro, Canary Islands).VULCANO project (CTM2012-36317)Fátima Hernández Martín*, Alejandro de Vera Hernández*, Eugenio Fraile Nuez**, Fernando Lozano Soldevila***, Mari Luz Fernández de Pueles**** , José María Espinosa Gutierez*** , Francisco García-Talavera Fariña*, María José Peñalver Puerta* & Blanca Muñoz Ortín** Museo de Ciencias Naturales de Tenerife. Museo de la Naturaleza y el Hombre. C/Fuente Morales s/n.38003 Santa Cruz de Tenerife, SPAIN. Email: fatima@museosdetenerife.org** Centro Oceanográfico de Canarias del Instituto Español de Oceanografía (IEO). 38180 Santa Cruz de Tenerife, SPAIN.*** Departamento de Biología Animal, Edafología y Geología (Unidad Departamental de Ciencias Marinas), Universidad de La Laguna. 38206. Tenerife, SPAIN.*** Centro Oceanográfico de Baleares del Instituto Español de Oceanografía (IEO). 07015 Palma de Malorca, SPAIN.     The “Museo de Ciencias Naturales de Tenerife” caried out some studies at La Restinga (SW of El Hiero Island), previous to the submarine volcanic eruption in October, 2011 (Hernández, 1985; Hernández & Jiménez, 1992 and Hernández & de Vera, 2011). Zoo-planktonic data groups were obtained, especialy chaetognaths colected in the area where the source of material from magmatic emission was subsequently placed. These studies revealed the richness of zooplanktonic zone. Hernández recorded in his work (Hernández, 1985) as dominant species, Sagita serratodentata and Sagita minima pres-ent in the curent study with high values of abundance, especialy the second one. Later, Hernández & Jiménez (1992) relate Sagita decipiens, Sagita inflata and Sagita lyra as predominant in the samples, although with very similar percentages. Sagita minima, prominent species in terms of percentage of presence in the samples from the campaign of VULCANO project (March, 2013), is founded in every state of sexual maturity (I, I and II in the later case in stations closer to the coast). Therefore, it is confirmed that it is a species wel represented, not only in El Hiero (West area). In the present study 1,855 mature individuals (stages of maturity I, I and I) and 702 juvenile chaetognaths were analyzed. Eleven species have been identified, belonging to the genera Sagita, Krohnita and Pterosagita, nine of the genus Sagita: Pterosagita draco (fig. 1), Krohnita paci-fica, Krohnita subtilis, Sagita sibogae, Sagita decipiens, Sagita planctonis, Sagita hexaptera, Sagita inflata (fig. 2), Sagita serratodentata, Sagita lyra and Sagita minima. The most abundant species was Sagita minima, folowed by Sagita inflata and Sagita serratodentata. Sagita decipiens and Sagita sibogae, which are not very frequent in Canary Islands coastal plankton, are present on the island of El Hiero, where are relatively abundant in the species list of previous work of the authors (pre-eruptive) and in recent samplings post-eruptive. The molusc Atlanta meteori is present at several stations located at diferent sides of the island, having recently recorded for the first time to the Atlantic Ocean (De Vera et al., 2006). Some common epipelagic species typical from undisturbed communities of this surface layer (Creseis clava, C. virgula (fig. 4) were abundantly colected. There is also a high abundance of benthic moluscs proto-conchs at stations near the coast and in normaly distributed values along sub-grid sam-ples surounding the volcano. The presence of these veliger larvae suggests that there is a recolonization of benthic gastropods in the vicinity of the eruption. Although the analysis of the rest of VULCANO cruises is not finished, we can afirm preliminarily that there are not diferences in the abundance and distribution of mesozooplanktonics species in the area, if they are compared with studies previous to the eruption. In paralel, some spe-cies of great interest due to its low abundance have been colected, including the crustacean Amphionides reynaudi and the nudibranch Cephalopyge trematoides.Fig. 1. Pterosagita draco in maturity stage II.Fig. 2. Sagita inflata in maturity stage II. Fig. 4. Cresseis virgula, an abundant pteropod present in almost al samples analyzed.Fig. 3. Adult specimen of the heteropod Atlanta peroni.View publication stats

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Analysis in pre and post eruptive periods of zooplankton from La Restinga (SW-El Hierro, Canary Islands). VULCANO project

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