Artificial marine habitats favour a single fish species on a long-term scale: the dominance of &lt;em&gt;Boops boops&lt;/em&gt; around off-shore fish cages

Riera, Rodrigo; Sánchez-Jérez, Pablo; Rodríguez, Myriam; Monterroso, Óscar

doi:10.3989/scimar.04083.08a

Cited by 13 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This situation occurs in offshore fish cages, with a high dispersion of particulate material, e.g. faeces and uneaten pellets, together with the presence of fish aggregates that incorporate this food source as a main part of their diet (Riera et al, 2014). The three indices (BO2A, BPOFA and BPA) showed consistent effects in Puerto Calero, inside a harbour where hydrodynamics are limited and not exposed to the main current.…”

Section: Discussionmentioning

confidence: 95%

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Dauvin

Andrade

de-la-Ossa-Carretero

et al. 2016

Ecological Indicators

View full text Add to dashboard Cite

a b s t r a c tAmong the macro-invertebrates used for the assessment of soft-bottom communities, most polychaetes are classified as tolerant/opportunistic to pollution while amphipods are considered as sensitive. These taxa have been used in several ecological indices, such as the simple abundance ratio between Polychaeta and Amphipoda or the Benthic Opportunist Annelids Amphipods (BO2A) index, to assess the Ecological Quality Status -EcoQs-of soft-bottom communities. In terms of Taxonomic Sufficiency (TS), the polychaete/amphipod ratio (i.e. at the level of the class/order) has been proved to be effective in identifying major changes in benthic communities following disturbances. However, an underlying issue is to assess the acceptable TS limit value needed to state accurately the quality of the benthic environment. We tested three indices using 18 series of observations carried out in five north-eastern Atlantic and Mediterranean zones impacted by oil spills, oil and gas production, brine and urban sewage, harbours and aquaculture farms within impacted and control areas. Similar results to BO2A were obtained when limiting the TS at the level of Polychaete opportunistic families, which required a lower degree of taxonomic expertise, and classifying all amphipods as sensitive taxa. In such a way that the EcoQs given by the BPOFA (Benthic Polychaete Opportunistic Families Amphipods) was very similar to those given by the BO2A (Benthic Opportunistic Annelids Amphipods).

show abstract

Section: Discussionmentioning

confidence: 95%

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Dauvin

Andrade

de-la-Ossa-Carretero

et al. 2016

Ecological Indicators

View full text Add to dashboard Cite

show abstract

“…In general, wild fish assemblages that are aggregated around fish farms are strongly dominated by only a few species (Dempster et al 2005, Valle et al 2007, Fernandez-Jover et al 2008, Bacher et al 2012 which may reduce the positive ecological effects of the artificial habitat created around the fish farms (Riera et al 2014) by reducing biodiversity.…”

Section: Temporal Dynamics Of Dominant Speciesmentioning

confidence: 99%

Husbandry and environmental conditions explain temporal variability of wild fish assemblages aggregated around a Mediterranean fish farm

Ballester-Moltó¹,

Sánchez-Jérez²,

García‐García³

et al. 2015

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

The aggregation of wild fish around fish farms is spatially and temporally variable in terms of species composition and structure. In general, temporal variability has been less well studied than the spatial aspect of these aggregations. We analyzed temporal variability at different scales following a hierarchical sampling design, with year, season and time of day as the main factors, with the levels of the latter factor corresponding with feeding intensity at the farm. Environmental and production variables were considered, such as water temperature, photoperiod, feed supplied, number of stocked fish and stocked biomass. Dominant fish species were analyzed separately to determine possible segregation processes. The most relevant sources of variation in abundance and assemblage structure were seasonal changes among years and hourly changes with different feeding intensities between seasons. Feed supplied was the production variable that best explained the temporal pattern with respect to abundance, and this variable, combined with hours of daylight, determined the assemblage structure. Liza ramada and Sarpa salpa dominated the assemblage in winter and were always aggregated around the farm. Boops boops, Ob-lada melanura and Sardinella aurita dominated the assemblage in spring, summer and autumn, showing a marked seasonal pattern. These 3 species, although present around the farm most of the year, displayed periods of distinct maximum abundance corresponding to their reproductive period. This study emphasizes the importance of determining the temporal patterns in abundance of dominant species in order to better understand the interaction between fish farming and wild fish assemblages, and to ascertain the contribution of wild fish to the recycling of aquaculture-derived wastes.

show abstract

“…This coastal species is broadly distributed in the Mediterranean and eastern Atlantic (from Norway to Angola), including the oceanic archipelagos at these latitudes 10 . It represents a vital fishery resource, particularly in the eastern Mediterranean 11 , inhabiting diverse habitats, including rocky substrates, sandy bare seabeds, seaweeds and seagrass meadows 12 . Boops boops have a PLD of 16 to 18 days and exhibit a vertical pattern of larval assemblages: smaller larvae occur at the surface while larger individuals are more frequently found at the bottom 13 .…”

Section: Introductionmentioning

confidence: 99%

Three mitochondrial lineages and no Atlantic-Mediterranean barrier for the bogue Boops boops across its widespread distribution

Cunha

Faleh

Francisco³

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Marine species exhibiting wide distributional ranges are frequently subdivided into discrete genetic units over limited spatial scales. This is often due to specific life-history traits or oceanographic barriers that prevent gene flow. Fine-scale sampling studies revealed distinct phylogeographic patterns in the northeastern Atlantic and the Mediterranean, ranging from panmixia to noticeable population genetic structure. Here, we used mitochondrial sequence data to analyse connectivity in the bogue Boops boops throughout most of its widespread distribution. Our results identified the existence of three clades, one comprising specimens from the Azores and eastern Atlantic/Mediterranean, another with individuals from the Canary Islands, Madeira and Cape Verde archipelagos, and the third with samples from Mauritania only. One of the branches of the northern subtropical gyre (Azores Current) that drifts towards the Gulf of Cádiz promotes a closer connection between the Azores, southern Portugal and the Mediterranean B. boops populations. The Almería-Oran Front, widely recognised as an oceanographic barrier for many organisms to cross the Atlantic-Mediterranean divide, does not seem to affect the dispersal of this benthopelagic species. The southward movement of the Cape Verde Frontal Zone during the winter, combined with the relatively short duration of the pelagic larval stage of B. boops, may be potential factors for preventing the connectivity between the Atlantic oceanic archipelagos and Mauritania shaping the genetic signature of this species.

show abstract

Artificial marine habitats favour a single fish species on a long-term scale: the dominance of <em>Boops boops</em> around off-shore fish cages

Cited by 13 publications

References 24 publications

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Husbandry and environmental conditions explain temporal variability of wild fish assemblages aggregated around a Mediterranean fish farm

Three mitochondrial lineages and no Atlantic-Mediterranean barrier for the bogue Boops boops across its widespread distribution

Contact Info

Product

Resources

About