Laboratorio Of Biologia Marina

Marina di Gioiosa Ionica, Italy

Laboratorio Of Biologia Marina

Marina di Gioiosa Ionica, Italy
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Lipizer M.,National Institute of Oceanography and Applied Geophysics - OGS | De Vittor C.,National Institute of Oceanography and Applied Geophysics - OGS | Falconi C.,National Institute of Oceanography and Applied Geophysics - OGS | Comici C.,National Institute of Oceanography and Applied Geophysics - OGS | And 2 more authors.
Estuarine, Coastal and Shelf Science | Year: 2012

To obtain more insight into the effects of severe forcing factors on a shallow coastal system, the elemental stoichiometry and the availability and partition of nitrogen, phosphorus and carbon in dissolved and particulate pools were assessed during events of particularly strong inputs of freshwater, high salinity anomalies, wind storms, algal blooms and elevated heterotrophic respiration processes. The research is based on data collected in the Long Term Ecological Research station of the Northern Adriatic Sea (Gulf of Trieste), from January 1999 to December 2010. During all considered events, stoichiometric ratios were higher than Redfield, due to an excess of carbon and nitrogen in relation to phosphorus. The particularly intense meteorological and biological events considered in this study altered the abundance, the relative availabilities of C, N and P and the stoichiometric ratios in different directions. Freshwater inputs and phytoplankton blooms caused a rise in the ratio between dissolved organic carbon and phosphorus, in N:P and C:P in the particulate compartment and, in the case of high freshwater only, in dissolved inorganic N:P, while the opposite was observed during events dominated by ingression of south-eastern waters and heterotrophic processes, when stoichiometric ratios decreased. Strong wind events, which are mainly due to north-easterly winds, did not seem to significantly modify the biogeochemical properties in the bottom layer. © 2012 Elsevier Ltd.

Guerra-Garcia J.M.,Laboratorio Of Biologia Marina | Ruiz-Tabares A.,Laboratorio Of Biologia Marina | Baeza-Rojano E.,Laboratorio Of Biologia Marina | Cabezas M.P.,Laboratorio Of Biologia Marina | And 6 more authors.
Ecological Indicators | Year: 2010

The main objective of the present study was to evaluate the concentration of trace metals in eight species of Caprella from sites of different degree of pollution along Southern Spain, and compare them with nine additional species of peracaridean crustaceans (5 gammarids, 3 isopods and 1 tanaid) and three molluscs. This is the first comprehensive study of trace metals in caprellids and other peracaridean crustaceans as a baseline work for future research. For most of the metals, values are higher in caprellids than in the rest of peracarideans and molluscs, as Mytilus or Patella, traditionally used as biomonitor in previous studies. Caprellids showed a significant higher range for Cr, Hg and Zn, while molluscs were better biomonitors for Pb; non-caprellid peracarids showed lower range of Fe and Ni than caprellids and molluscs. Besides the wider ranges shown by caprellids for trace metals in comparison with other invertebrates, Caprella spp. is especially abundant in intertidal and shallow waters ecosystems worldwide; this genus includes species characterised by a short generation time, and a sedentary way of life as a consequence of direct development and low capacity of swimming. Consequently, the use of Caprella spp. could be an interesting tool in monitoring programmes of heavy metal pollution. © 2009 Elsevier Ltd. All rights reserved.

Vazquez-Luis M.,Spanish Institute of Oceanography | Guerra-Garcia J.M.,Laboratorio Of Biologia Marina | Carvalho S.,IPMA Portuguese Institute for the Sea and Atmosphere | Png-Gonzalez L.,University of Las Palmas de Gran Canaria
Zootaxa | Year: 2013

Mantacaprella macaronensis new genus, new species, is described based on specimens collected from Canary Islands and Cape Verde. Mantacaprella is close to the genera Pariambus, Pseudolirius, Propodalirius and Paracaprella, but can be distinguished by the combination of the following characteristics: pereopods 3, 4 and 5 two-articulate; pereopods 6 and 7 six-articulate; mandibular molar present and palp absent; male abdomen with a pair of well-developed appendages. The new species has been found living in Cymodocea nodosa meadows and Caulerpa prolifera beds from 8.8 to 14.6 m depth in Gran Canaria (Canary Islands), and in natural rocky and artificial habitats (shipwrecks) at 25 m in Sal Island (Cape Verde). Even though the new species is one of the dominant amphipods inhabiting meadows of Cymodocea nodosa in Gran Canaria and in Cape Verde, it had not been described so far. This reflects the lack of knowledge on Macaronesian invertebrates, such as amphipods, and the need of further taxonomical studies to better characterise the whole biodiversity of this region and to design adequate programmes of management and conservation. Copyright © 2013 Magnolia Press.

Baeza-Rojano E.,Laboratorio Of Biologia Marina | Garcia S.,IFAPA Agua del Pino | Garrido D.,IFAPA Agua del Pino | Guerra-Garcia J.M.,Laboratorio Of Biologia Marina | Domingues P.,Spanish Institute of Oceanography
Aquaculture | Year: 2010

The effects of feeding two alternative live prey (exclusively caprellids (Caprella equilibra) or several species of gammarids, mainly Ericthonius brasiliensis, Jassa marmorata and Elasmopus sp.), to cuttlefish hatchlings were compared to feeding mysids (Mesopodopsis slabberi), which are normally used during the first weeks of the life cycle. Weight (g) and growth rates (GR, % BW d - 1) were determined. Cuttlefish hatchlings fed with mysids and gammarids grew faster (6.7 ± 0.4 and 5.7 ± 0.9% BW d - 1, respectively) compared to caprellids (1.6 ± 0.2% BW d - 1). Survival was higher (96.7 ± 5.8%) for hatchlings fed mysids, compared to 83.3 ± 15.3% and 76.7 ± 5.8%, for those fed gammarids and caprellids, respectively. According to the results obtained, gammarids could be used as an alternative prey to mysids, while Caprella equilibra did not deliver appropriate growth rates and should be disregarded as alternative prey for rearing early stages (hatchlings) of Sepia officinalis. This is the first study revealing a successful use of amphipods, mainly gammarids, as alternative prey for cuttlefish hatchlings. © 2010 Elsevier B.V. All rights reserved.

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