Lessons from Acidification and Pesticides

Rosseland, Bjørn Olav; Kroglund, Frode

doi:10.1002/9781444327755.ch15

Cited by 9 publications

(17 citation statements)

References 113 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In waters acidified by dissolved CO 2 , the action potential of the GABA A receptor is reduced, leading to reduced anxiety in fish, often expressed as an increase in risk taking3738. Acidification of waters is emphasized as a major global threat to salmon, based on the negative impact on physiological development and survival39. Recently, climate-change related acidification, due to increased CO 2 levels, has been suggested to be especially detrimental to salmon20, partly because it modifies risk-taking behaviour and anxiety during the freshwater phase25.…”

Section: Discussionmentioning

confidence: 99%

GABAergic anxiolytic drug in water increases migration behaviour in salmon

et al. 2016

View full text Add to dashboard Cite

Migration is an important life-history event in a wide range of taxa, yet many migrations are influenced by anthropogenic change. Although migration dynamics are extensively studied, the potential effects of environmental contaminants on migratory physiology are poorly understood. In this study we show that an anxiolytic drug in water can promote downward migratory behaviour of Atlantic salmon (Salmo salar) in both laboratory setting and in a natural river tributary. Exposing salmon smolt to a dilute concentration of a GABAA receptor agonist (oxazepam) increased migration intensity compared with untreated smolt. These results implicate that salmon migration may be affected by human-induced changes in water chemical properties, such as acidification and pharmaceutical residues in wastewater effluent, via alterations in the GABAA receptor function.

show abstract

Section: Discussionmentioning

confidence: 99%

GABAergic anxiolytic drug in water increases migration behaviour in salmon

et al. 2016

View full text Add to dashboard Cite

show abstract

“…This coincided with an increase in growth performance in juvenile Atlantic salmon and a decrease in mean age at smolting (Rivot et al, 2009). Nevertheless, contaminants also alter the parr-smolt transformation, and influence the run timing and survival of smolts once they enter sea water (McCormick, Hansen, Quinn, & Saunders, 1998;Rosseland & Kroglund, 2010). In the Burrishoole, Ireland, land-use change was found to have no significant impact on the freshwater survival of either salmon or trout (de Eyto et al, 2016).…”

Section: Degradation Of Water Qualitymentioning

confidence: 97%

“…Hesthagen et al, 2017;Kroglund et al, 2007;Rosseland & Kroglund, 2010). Although emissions were reduced after 1990, many rivers in this area are still affected by chronic or episodic acidification (e.g.…”

Section: Degradation Of Water Qualitymentioning

confidence: 99%

Environmental influences on life history strategies in partially anadromous brown trout (Salmo trutta, Salmonidae)

et al. 2019

View full text Add to dashboard Cite

This paper reviews the life history of brown trout and factors influencing decisions to migrate. Decisions that maximize fitness appear dependent on size at age. In partly anadromous populations, individuals that attain maturity at the parr stage typically become freshwater resident. For individual fish, the life history is not genetically fixed and can be modified by the previous growth history and energetic state in early life. This phenotypic plasticity may be influenced by epigenetic modifications of the genome. Thus, factors influencing survival and growth determine life‐history decisions. These are intra‐ and interspecific competition, feeding and shelter opportunities in freshwater and salt water, temperature in alternative habitats and flow conditions in running water. Male trout exhibit alternative mating strategies and can spawn as a subordinate sneaker or a dominant competitor. Females do not exhibit alternative mating behaviour. The relationship between growth, size and reproductive success differs between sexes in that females exhibit a higher tendency to migrate than males. Southern populations are sensitive to global warming. In addition, fisheries, aquaculture with increased spreading of salmon lice, introduction of new species, weirs and river regulation, poor water quality and coastal developments all threaten trout populations. The paper summarizes life‐history data from six populations across Europe and ends by presenting new research questions and directions for future research.

show abstract

“…Entre los posibles impactos, derivados de la actividad humana, que pueden actuar sobre las poblaciones de trucha en agua dulce se incluye: la acidificación (Henrikson & Brodin 1995, Kroglund et al 2008, Rosseland & Kroglund 2011, otros contaminantes acuáticos; como aquellos derivados de la acuicultura o la construcción (McCormick et al 1998, Kroglund et al 2007, Meland et al 2010, Jonsson et al 2011, Rosseland & Kroglund 2011, Cocchiglia et al 2012, el desarrollo de estaciones hidroeléctricas, regulación del flujo del rio, obstáculos para la migración y alteraciones del hábitat (Saltveit et al 2001, Aarestrup & Koed 2003, Halleraker et al 2003, Flodmark et al 2004Alonso-González et al 2008, Barlaup et al 2008, Östergren & Rivinoja 2008, Calles & Greenberg 2009, Kraabøl et al 2009, Erkinaro et al 2011, Pulg et al 2013. En el medio marino, en cambio, además de la infestación por el piojo del salmón, entre los impactos derivados de la actividad humana se pueden incluir el desarrollo de puertos, construcciones costeras, las estructuras y actividad piscícola, así como el desarrollo industrial en general (Thorstad et al 2015).…”

Section: Otros Impactos Antropogénicosunclassified

“…Por otro lado, los descriptores de infestación por este parásito en las poblaciones de trucha que habitan áreas con una actividad acuícola intensiva varían considerablemente entre los estudios revisados, encontrando desde bajos niveles de infestación, cercanos al registrado en áreas sin actividad acuícola, hasta niveles indicativos de elevado riesgo de muerte por carga parasitaria (Tully et al 1993a(Tully et al , 1999Birkeland 1996, Birkeland & Jakobsen 1997, MacKenzie et al 1998, Bjørn et al 2001, 2011Bjørn & Finstad 2002, Urquhart et al 2010, Serra-Llinares et al 2014, Vollset & Barlaup 2014, Arechavala-Lopez et al 2015) (Tabla 1). En áreas donde las truchas presentan altos niveles de infestación, suelen predominar los parásitos en estadio de chalimus (Tully et al 1993a, Sharp et al 1994, Birkeland & Jakobsen 1997, Gargan 2000, Bjørn et al 2001, Butler 2002, Gargan et al 2003.…”

Section: Niveles Parasitarios En Poblaciones De Truchasunclassified

Efectos del piojo del salmón Lepeophtheirus salmonis (Copepoda: Caligidae) en las poblaciones de truchas (Salmo trutta) de la costa NE Atlántica

Arechavala-López

Thorstad

Todd

et al. 2015

Rev. biol. mar. oceanogr.

View full text Add to dashboard Cite

REVISIÓN Efectos del piojo del salmón Lepeophtheirus salmonis(Copepoda: Caligidae) en las poblaciones de truchas (Salmo trutta) de la costa NE Atlántica Abstract.-Salmon lice are external parasites on salmonids in the marine environment. During recent years, s ea lice abundance has been increased due to the presence of salmon farming using on-growing floating seas-cages. Amongst salmonids, sea trout is especially vulnerable to salmon lice infestations, because during their mari ne residence they typically remain in coastal waters, where open net cage Atlantic salmon farms typically are situated. In this report the existing knowledge about the effects of salmon lice on sea trout populations in the NE Atlantic coastal waters has been reviewed, assessing the current situation of this problematic. Salmon aquaculture increase the salmon lice abundance, which affect negatively on sea trout populations as an increase in marine mortality, changes in migratory behaviour and reduction of marine growth. These conclusions are based on published studies that range from those investigating the effects of salmon lice on individual fish, both in the laboratory and the field, to analyses of their impacts on populations in the wild. In sum, the combined knowledge from the reviewed studies provides evidence of a general and pervasive negative effect of salmon lice on sea trout populations, especially in intensively farmed areas. The effects induced by elevated salmon lice levels inevitably imply a reduction in numbers and body size of sea trout returning to freshwater for spawning, affecting the local population dynamic and recreational and commercial fisheries in the most impacted areas. Key words: Parasites, aquaculture, impact, salmonids, managementResumen.-Los piojos del salmón son parásitos externos de salmónidos en ambientes marinos. En los últimos a ños, la abundancia de este parásito ha aumentado debido a la presencia de cultivos de salmones en jaulas de engorde en mar abierto. Entre los salmónidos, la trucha es especialmente vulnerable a las infecciones por el piojo ya que permanece en aguas costeras durante su período marino, donde se sitúan las instalaciones acuícolas de cultivo del salmón. En el presente trabajo se recopila la información existente sobre los efectos del piojo del salmón en las poblaciones de truchas silvestres que habitan las costas del NE Atlántico, y evaluar posteriormente el estado actual de dicha problemá tica. La acuicultura de salmón aumenta la abundancia de piojos, los cuales impactan negativamente sobre las poblaciones d e truchas, aumentando la mortalidad, cambiando las pautas migratorias y disminuyendo el crecimiento. Estas conclusiones se basan en estudios científicos que abarcan desde experimentos en el laboratorio o en el campo de los efectos del piojo en las truchas a nivel individual, hasta estudios poblacionales de dichos impactos. En resumen, el conocimiento adquirido en esta revisión evidencia la existencia de un efecto general y persuasivo de los piojos en las pobl aciones de truchas...

show abstract

Lessons from Acidification and Pesticides

Cited by 9 publications

References 113 publications

GABAergic anxiolytic drug in water increases migration behaviour in salmon

GABAergic anxiolytic drug in water increases migration behaviour in salmon

Environmental influences on life history strategies in partially anadromous brown trout (Salmo trutta, Salmonidae)

Efectos del piojo del salmón Lepeophtheirus salmonis (Copepoda: Caligidae) en las poblaciones de truchas (Salmo trutta) de la costa NE Atlántica

Contact Info

Product

Resources

About