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Issue 2016 cover
Olifants River gorge in South Africa, photo by Dean Impson

ISSN 2386-8228

Fishes in Mediterranean Environments

Issue 2016

Disruption of salinity regimes in Mediterranean coastal wetlands and its impact on the coexistence of an endangered and an invasive fish
Miguel Clavero, Nati Franch, Quim Pou-Rovira and Josep M. Queral

FiSHMED 2016.001:20p.

Abstract – Mediterranean coastal wetlands have been extensively eliminated and degraded by human activities. Salinity regimes are one of the main abiotic factors structuring biological communities in coastal wetlands and can be disrupted outflows from irrigated fields, especially through dilution. Here, we analyse patterns in salinity regimes as well as their temporal trends in coastal lagoons of the Ebro Delta, focusing on the impacts of rice farming. We then analyse the relationships between salinity regimes and the populations of two fish species, the Iberian toothcarp (Aphanius iberus) and the Eastern mosquitofish (Gambusia holbrooki). The former is a globally threatened cyprinodontid endemic to Spain and its decline has been linked to the impacts of mosquitofish.
The influence of rice farming in the Ebro Delta has disrupted the salinity regimes of its coastal lagoons, most of which have winter salinity peaks and low values during summer due to irrigation drainage from inundated rice paddies. Active management of these outflows has favoured increases of summer salinity in some lagoons between years 2001 and 2009, but during the same period summer salinity values have decreased in other lagoons. Between years 2005 and 2009 we sampled fish 55 times in the autumn, within 16 sites, capturing more than 10,000 fish. We related fish captures to the seasonal variation in water salinity. Toothcarp were more abundant in sites with higher summer salinities, i.e. with little influence of drainage effluent from rice fields. Mosquitofish tended to be less abundant when winter conductivities were high, suggesting that the maximum salinity levels during winter act as a filter for the species.
The agriculture-induced drop in salinity during summer seems to allow mosquitofish to occupy coastal lagoons. We discuss the interactions of rice culture with natural wetlands as well as the management implications for the conservation of the Iberian toothcarp.

Keywords : Aphanius, Gambusia, salinity, rice fields, Ebro Delta, wetland functioning, fish conservation, coastal lagoons

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Citation : Clavero M, Franch N, Pou-Rovira Q, Queral JM (2016) Disruption of salinity regimes in Mediterranean coastal wetlands and its impact on the coexistence of an endangered and an invasive fish. FiSHMED Fishes in Mediterranean Environments 2016.001:20p.

Article first published online : 01 February 2016

A fish mortality episode reveals the expansion of invasive mummichog Fundulus heteroclitus (L., 1766) in southern Spain
Francisco Blanco-Garrido and Miguel Clavero

FiSHMED 2016.002:6p.

Abstract – The mummichog Fundulus heteroclitus, a cyprinodontiform species native to the Atlantic coast of North America, was apparently introduced to southern Iberian Peninsula in the early 1970s, if not earlier. Until now, the Barbate marshes constituted the southern limit of the species in the Iberian Peninsula. However, a fish mortality event promoted by an anoxia episode in the Cachón River (July 31st-August 4th 2016) revealed a southward expansion of the species from its known southern limit. It is not known whether the mummichog has already occupied other potentially suitable habitats south to the Cachón River, but this should be of concern, since it could threaten the unique populations of some native fish species in the area.

Keywords :expansion, cyprinodontiform, Iberian Peninsula, Invasive species, tidal creeks, tidal marshes

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Citation : Blanco-Garrido F, Clavero M (2016) A fish mortality episode reveals the expansion of invasive mummichog Fundulus heteroclitus (L., 1766) in southern Spain. FISHMED Fishes in Mediterranean Environments 2016.002:6p.

Article first published online : 11 January 2017

Extended Abstracts of the VI Iberian Congress of Ichthyology SIBIC2016, 21–24 June 2016, Murcia, Spain

The influence of parasites in the population status of the European eel, Anguilla anguilla L.
Aurélia Saraiva, André Pereira

FiSHMED 2016.003:4p

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Citation : Saraiva A, Pereira A (2016) The influence of parasites in the population status of the European eel, Anguilla anguilla L. FiSHMED Fishes in Mediterranean Environments 2016.003:4p.

Article first published online : 27 January 2017

Sexual variation in biochemical indicators in adults of sea lamprey (Petromyzon marinus Linnaeus, 1758)
Sandra Barca, Sergio Silva, Rufino Vieira-Lanero, Mª José Servia, David José Nachón, Lorena Lago, Mª Teresa Couto, Mª Carmen Cobo, Pablo Gómez, Carlos Morquecho, Fernando Cobo

FiSHMED 2016.004:4p

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Citation : Barca S, Silva S, Vieira-Lanero R, Servia MJ, Nachón DJ, Lago L, Couto MT, Cobo MC, Gómez P, Morquecho C, Cobo F (2016) Sexual variation in biochemical indicators in adults of sea lamprey (Petromyzon marinus Linnaeus, 1758). FiSHMED Fishes in Mediterranean Environments 2016.004:4p.

Article first published online : 27 January 2017

Larval habitat of sea lamprey Petromyzon marinus Linnaeus, 1758
Sergio Silva, Sandra Barca, Rufino Vieira, Mª José Servia, David José Nachón, Carlos Morquecho, Lorena Lago, Pablo Gómez, Maite Couto, Mª Carmen Cobo, Fernando Cobo

FiSHMED 2016.005:3p

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Citation : Silva S, Barca S, Vieira R, Servia MJ, Nachón DJ, Morquecho C, Lago L, Gómez P, Couto M, Cobo MC, Cobo F (2016) Larval habitat of sea lamprey Petromyzon marinus Linnaeus, 1758. FiSHMED Fishes in Mediterranean Environments 2016.005:3p.

Article first published online : 27 January 2017

Preliminary data on feeding behaviour of young-of-the-year twaite shad, Alosa fallax (Lacepede, 1803), during their downstream migration in two rivers of the NW of the Iberian Peninsula
David J. Nachón, Rufino Vieira-Lanero, María J. Servia, Sandra Barca, Sergio Silva, Lorena Lago, Mª Teresa Couto, Pablo Gómez, Carlos Morquecho, Mª Carmen Cobo, Javier Sánchez-Hernández, Fernando Cobo

FiSHMED 2016.006:4p

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Citation : Nachón DJ, Vieira-Lanero R, Servia MJ, Barca S, Silva S, Lago L, Couto MT, Gómez P, Morquecho C, Cobo MC, Sánchez-Hernández J, Cobo F (2016) Preliminary data on feeding behaviour of young-of-the-year twaite shad, Alosa fallax (Lacepede, 1803), during their downstream migration in two rivers of the NW of the Iberian Peninsula. FiSHMED Fishes in Mediterranean Environments 2016.006:4p.

Article first published online : 27 January 2017

LIFE+ Segura-Riverlink: a green infrastructure approach to restore the longitudinal connectivity
Francisco J. Oliva-Paterna, Eduardo Lafuente, Rosa Olivo del Amo, Francisco J. Sanz-Ronda, Jorge Sánchez-Balibrea, Rafael Díaz-García, Mar Torralva

FiSHMED 2016.007:3p

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Citation : Oliva-Paterna FJ, Lafuente E, Olivo del Amo R, Sanz-Ronda FJ, Sánchez-Balibrea J, Díaz-García R, Torralva M (2016) LIFE+ Segura-Riverlink: a green infrastructure approach to restore the longitudinal connectivity. FiSHMED Fishes in Mediterranean Environments 2016.007:3p.

Article first published online : 27 January 2017

Seasonal use of fish passes in a modified Mediterranean river: first insights of the LIFE+ Segura-Riverlink
Ana Sánchez-Pérez, Francisco J. Oliva-Paterna, José M. Zamora-Marín, Fátima Amat-Trigo, Antonio Zamora-López, Juan M. Franco, Francisco J. Bravo-Córdoba, Ana Ruiz-Navarro, Francisco J. Sanz-Ronda, Mar Torralva

FiSHMED 2016.008:3p

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Citation : Sánchez-Pérez A, Oliva-Paterna FJ, Zamora-Marín JM, Amat-Trigo F, Zamora-López A, Franco JM, Bravo-Córdoba FJ, Ruiz-Navarro A, Sanz-Ronda FJ, Torralva M (2016) Seasonal use of fish passes in a modified Mediterranean river: first insights of the LIFE+ Segura-Riverlink. FiSHMED Fishes in Mediterranean Environments 2016.008:3p.

Article first published online : 27 January 2017

Gonado-somatic index of migrating Iberian barbel (Luciobarbus bocagei) and northern straight-mouth nase (Pseudochondrostoma duriense) in the Tormes River (Salamanca, Spain)
Néstor González-Alemán, Francisco Javier Sanz-Ronda, Francisco Javier Bravo Córdoba, Jorge Ruiz Legazpi

FiSHMED 2016.009:3p

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Citation : González-Alemán N, Sanz-Ronda FJ, Bravo Córdoba FJ, Ruiz Legazpi J (2016) Gonado-somatic index of migrating Iberian barbel (Luciobarbus bocagei) and northern straight-mouth nase (Pseudochondrostoma duriense) in the Tormes River (Salamanca, Spain). FiSHMED Fishes in Mediterranean Environments 2016.009:3p.

Article first published online : 19 February 2017

Effects of flow regulation along longitudinal gradient on size-related metrics of fish populations from a Mediterranean basin
Fátima Amat-Trigo, Mar Torralva, Ana Sánchez-Pérez, Ana Ruiz-Navarro, Francisco J. Oliva-Paterna

FiSHMED 2016.010:4p

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Citation : Amat-Trigo F, Torralva M, Sánchez-Pérez A, Ruiz-Navarro A, Oliva-Paterna FJ (2016) Effects of flow regulation along longitudinal gradient on size-related metrics of fish populations from a Mediterranean basin. FiSHMED Fishes in Mediterranean Environments 2016.010:4p.

Article first published online : 19 February 2017

Uninvited dinner guests: the effect of invasive fish and temperature on the foraging efficiency of southern Iberian chub
Alexa Kodde, Christos Gkenas, Gisela Cheoo, Filipe Ribeiro, Maria Filomena Magalhães

FiSHMED 2016.011:3p

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Citation : Kodde A, Gkenas C, Cheoo G, Ribeiro F, Magalhães MF (2016) Uninvited dinner guests: the effect of invasive fish and temperature on the foraging efficiency of southern Iberian chub. FiSHMED Fishes in Mediterranean Environments 2016.011:3p.

Article first published online : 19 February 2017

Critical thermal maximum and minimum in Australoheros facetus, a neotropical invader in the Iberian Peninsula
Flávia Baduy, Jéssica Soares, Mariana Silva, Adelino VM Canário, João Saraiva, Pedro M Guerreiro

FiSHMED 2016.012:3p

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Citation : Baduy F, Soares J, Silva M, Canário AVM, Saraiva J, Guerreiro PM (2016) Critical thermal maximum and minimum in Australoheros facetus, a neotropical invader in the Iberian Peninsula. FiSHMED Fishes in Mediterranean Environments 2016.012:3p.

Article first published online : 19 February 2017

Melanocortin system and puberty in zebrafish: a study model applied for aquaculture
Sandra Navarro, José Miguel Cerdá-Reverter, Ana Rocha

FiSHMED 2016.013:3p

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Citation : Navarro S, Cerdá-Reverter JM, Rocha A (2016) Melanocortin system and puberty in zebrafish: a study model applied for aquaculture. FiSHMED Fishes in Mediterranean Environments 2016.013:3p.

Article first published online : 19 February 2017

Ecophysiology of the small-spotted catshark in free-living conditions
Elisenda Valls, Joan Navarro, Claudio Barría, Marta Coll, Jaume Fernández-Borras, Guiomar Rotllant

FiSHMED 2016.014:3p

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Citation : Valls E, Navarro J, Barría C, Coll M, Fernández-Borras J, Rotllant G (2016) Ecophysiology of the small-spotted catshark in free-living conditions. FiSHMED Fishes in Mediterranean Environments 2016.014:3p.

Article first published online : 19 February 2017

Population genomics of the small-spotted catshark (Scyliorhinus canicula) along the Western European Coast
Alice Manuzzi, Lorenzo Zane, Ana Veríssimo

FiSHMED 2016.015:4p

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Citation : Manuzzi A, Zane L, Veríssimo A (2016) Population genomics of the small-spotted catshark (Scyliorhinus canicula) along the Western European Coast. FiSHMED Fishes in Mediterranean Environments 2016.015:4p.

Article first published online : 11 April 2017

Elasmobranch fishing in Spain: preliminary analysis based on long-term data
David Nos-Francisco, Remedios Cabrera

FiSHMED 2016.016:4p

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Citation : Nos-Francisco D, Cabrera R (2016) Elasmobranch fishing in Spain: preliminary analysis based on long-term data. FiSHMED Fishes in Mediterranean Environments 2016.016:4p.

Article first published online : 11 April 2017

Trophic segregation between two demersal opportunistic predators coexisting in the Mediterranean Sea
Nieves López, Joan Navarro, Claudio Barría, Marta Albo-Puigserver, Marta Coll, Isabel Palomera

FiSHMED 2016.017:3p

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Citation : López N, Navarro J, Barría C, Albo-Puigserver M, Coll M, Palomera I (2016) Trophic segregation between two demersal opportunistic predators coexisting in the Mediterranean Sea. FiSHMED Fishes in Mediterranean Environments 2016.017:3p.

Article first published online : 11 April 2017

Analysis of swordfish surface longline fishery in Andalusia, Spain
Arana D, Sanz-Fernández V, Muñoz-Lechuga R, Cabrera R

FiSHMED 2016.018:3p

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Citation : Arana D, Sanz-Fernández V, Muñoz-Lechuga R, Cabrera R (2016) Analysis of swordfish surface longline fishery in Andalusia, Spain. FiSHMED Fishes in Mediterranean Environments 2016.018:3p.

Article first published online : 11 April 2017

Technical support for the creation of a marine reserve as a fisheries management tool in Cape Roche (Cadiz)
Jesica Sarmiento, Jorge Sáez Jiménez, Francisco Sobrado-Llompart, Remedios Cabrera

FiSHMED 2016.019:4p

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Citation : Sarmiento J, Sáez Jiménez J, Sobrado-Llompart R, Cabrera R (2016) Technical support for the creation of a marine reserve as a fisheries management tool in Cape Roche (Cadiz). FiSHMED Fishes in Mediterranean Environments 2016.019:4p.

Article first published online : 11 April 2017

Life cycle and structure of a population of Batrachoides surinamensis in a mangrove swamp, Maranhão, Brazil
Maria do Socorro Saraiva Pinheiro, Roberto Goitein

FiSHMED 2016.020:3p

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Citation : Pinheiro MSS, Goitein R (2016) Life cycle and structure of a population of Batrachoides surinamensis in a mangrove swamp, Maranhão, Brazil. FiSHMED Fishes in Mediterranean Environments 2016.020:3p.

Article first published online : 11 April 2017

FiSHMED is an international scientific journal edited by
the Iberian Society of Ichthyology – SIBIC