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  1. Article: Multiple Approaches to the Trophic Role of Mesopelagic Fish around the Iberian Peninsula.

    Bernal, Ainhoa / Tuset, Víctor Manuel / Olivar, María Pilar

    Animals : an open access journal from MDPI

    2023  Volume 13, Issue 5

    Abstract: Myctophids, commonly vertical migrators, and partial and non-migrant stomiiforms constitute most of the mesopelagic biomass, and transport organic matter throughout the food web from the surface to the ocean's depths. Both the diet and trophic structure ... ...

    Abstract Myctophids, commonly vertical migrators, and partial and non-migrant stomiiforms constitute most of the mesopelagic biomass, and transport organic matter throughout the food web from the surface to the ocean's depths. Both the diet and trophic structure of twenty-nine species of mesopelagic fish collected around the Iberian Peninsula were studied through the analysis of stomach contents, quantifying food items with a high taxonomic resolution. The investigation covered oligotrophic to productive habitats, with sampling stations distributed in five discrete zones of the western Mediterranean Sea and the northeastern Atlantic Ocean. The geographic environmental conditions, migratory behavior, and species-specific body sizes allowed for the identification of some major feeding patterns for these fish communities. The trophic niche of migrant myctophids showed a high overlap, with copepods as the primary prey category. The diet composition of generalist myctophids (e.g.,
    Language English
    Publishing date 2023-02-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2606558-7
    ISSN 2076-2615
    ISSN 2076-2615
    DOI 10.3390/ani13050886
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Multiple Approaches to the Trophic Role of Mesopelagic Fish around the Iberian Peninsula

    Bernal, Ainhoa / Tuset, Víctor Manuel / Olivar, María Pilar

    Animals. 2023 Feb. 28, v. 13, no. 5

    2023  

    Abstract: Myctophids, commonly vertical migrators, and partial and non-migrant stomiiforms constitute most of the mesopelagic biomass, and transport organic matter throughout the food web from the surface to the ocean’s depths. Both the diet and trophic structure ... ...

    Abstract Myctophids, commonly vertical migrators, and partial and non-migrant stomiiforms constitute most of the mesopelagic biomass, and transport organic matter throughout the food web from the surface to the ocean’s depths. Both the diet and trophic structure of twenty-nine species of mesopelagic fish collected around the Iberian Peninsula were studied through the analysis of stomach contents, quantifying food items with a high taxonomic resolution. The investigation covered oligotrophic to productive habitats, with sampling stations distributed in five discrete zones of the western Mediterranean Sea and the northeastern Atlantic Ocean. The geographic environmental conditions, migratory behavior, and species-specific body sizes allowed for the identification of some major feeding patterns for these fish communities. The trophic niche of migrant myctophids showed a high overlap, with copepods as the primary prey category. The diet composition of generalist myctophids (e.g., Ceratoscopelus maderensis and Hygophum benoiti) reflected the distinct zooplanktonic communities between zones. Large stomiiforms (Chauliodus spp., Sigmops elongatus) preferred feeding on micronekton, while the smallest stomiiforms (e.g., Argyropelecus spp., Cyclothone spp., Vinciguerria spp.) preyed on copepods and ostracods. Given the relevance of the mesopelagic fish communities for commercially exploited species and, therefore, for maintaining the sustainability of the fisheries’ activity in the zones analyzed, the information provided in the present study is essential for a better understanding of the biology and ecology of these species.
    Keywords Argyropelecus ; Ceratoscopelus maderensis ; Chauliodus ; Copepoda ; Cyclothone ; Hygophum ; Sigmops ; Vinciguerria ; biomass ; diet ; fish ; food webs ; micronekton ; migratory behavior ; organic matter ; prey species ; stomach ; Atlantic Ocean ; Iberian Peninsula ; Mediterranean Sea
    Language English
    Dates of publication 2023-0228
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2606558-7
    ISSN 2076-2615
    ISSN 2076-2615
    DOI 10.3390/ani13050886
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Energy density of mesopelagic fishes from the Atlantic Ocean.

    López-Pérez, Cristina / Olivar, María Pilar / Tuset, Víctor M / Bernal, Ainhoa / Hulley, Percy Alexander

    Journal of fish biology

    2023  Volume 102, Issue 4, Page(s) 924–935

    Abstract: Mesopelagic fishes play a central role in marine food webs linking primary consumers to top predators. In this study, measures of direct calorimetry were used to analyse the energy density (ED) of 34 mesopelagic species collected at 12 stations in the ... ...

    Abstract Mesopelagic fishes play a central role in marine food webs linking primary consumers to top predators. In this study, measures of direct calorimetry were used to analyse the energy density (ED) of 34 mesopelagic species collected at 12 stations in the equatorial and tropical Atlantic. Mean ED ranged from 2.7 kJ g
    MeSH term(s) Animals ; Ecosystem ; Fishes ; Food Chain ; Atlantic Ocean ; Nutritional Status
    Language English
    Publishing date 2023-02-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.15331
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 4814: Show issues
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  4. Article ; Online: Energy density of mesopelagic fishes from the Atlantic Ocean

    López‐Pérez, Cristina / Olivar, María Pilar / Tuset, Víctor M. / Bernal, Ainhoa / Hulley, P. Alexander

    Journal of Fish Biology. 2023 Apr., v. 102, no. 4 p.924-935

    2023  

    Abstract: Mesopelagic fishes play a central role in marine food webs linking primary consumers to top predators. In this study, measures of direct calorimetry were used to analyse the energy density (ED) of 34 mesopelagic species collected at 12 stations in the ... ...

    Abstract Mesopelagic fishes play a central role in marine food webs linking primary consumers to top predators. In this study, measures of direct calorimetry were used to analyse the energy density (ED) of 34 mesopelagic species collected at 12 stations in the equatorial and tropical Atlantic. Mean ED ranged from 2.7 kJ g⁻¹ wet weight (WW) for the lanterfish Lampanyctus nobilis to 8.7 kJ g⁻¹ WW for the lanterfish Benthosema glaciale. This study includes species of the orders Myctophiformes and Stomiiformes and represents migrants, non‐migrants and partial‐migrants species. The majority of the species were grouped into the medium‐energy quality category (ED from 4 to 6 kJ g⁻¹); Myctophiformes showed higher energetic values than the Stomiiformes. For the different species, the ED values were discussed in relation to spawning period and energy allocation strategies for reproduction and growth and feeding and migratory behaviour, as well as the ecoregion of study. These values will be useful for future assessment of energetic transfer between trophic levels and energetic modelling of Atlantic ecosystems.
    Keywords Benthosema glaciale ; Lampanyctus ; Stomiiformes ; calorimetry ; ecoregions ; energy ; energy density ; fish ; migratory behavior ; reproduction ; Atlantic Ocean
    Language English
    Dates of publication 2023-04
    Size p. 924-935.
    Publishing place Blackwell Publishing Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 410564-3
    ISSN 1095-8649 ; 0022-1112
    ISSN (online) 1095-8649
    ISSN 0022-1112
    DOI 10.1111/jfb.15331
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4814: Show issues
    Z 4814 a: Show issues

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article: Stranding of Mesopelagic Fishes in the Canary Islands.

    Sarmiento-Lezcano, Airam N / Couret, María / Lombarte, Antoni / Olivar, María Pilar / Landeira, José María / Hernández-León, Santiago / Tuset, Víctor M

    Animals : an open access journal from MDPI

    2022  Volume 12, Issue 24

    Abstract: Most mesopelagic fishes perform large diel vertical migrations from the deep-sea zone to the surface. Although there is a trade-off between a higher food availability at the upper layers and an energy cost and predation risk, incursion towards the ... ...

    Abstract Most mesopelagic fishes perform large diel vertical migrations from the deep-sea zone to the surface. Although there is a trade-off between a higher food availability at the upper layers and an energy cost and predation risk, incursion towards the surface also implies a transport by currents, where the fish are exposed to a stranding risk on the coast. Here, we reported the first documented stranding of mesopelagic fishes along the southeast shore of Gran Canaria Island. Our study hypothesized that (1) the influence of the Canary Current, (2) the dominant incidence of the Trade Winds during summer, and (3) the presence of an upwelling filament coupled with an anticyclonic eddy south of Gran Canaria Island were the causative mechanisms of the strandings.
    Language English
    Publishing date 2022-12-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2606558-7
    ISSN 2076-2615
    ISSN 2076-2615
    DOI 10.3390/ani12243465
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Stranding of Mesopelagic Fishes in the Canary Islands

    Sarmiento-Lezcano, Airam N. / Couret, María / Lombarte, Antoni / Olivar, María Pilar / Landeira, José María / Hernández-León, Santiago / Tuset, Víctor M.

    Animals. 2022 Dec. 08, v. 12, no. 24

    2022  

    Abstract: Most mesopelagic fishes perform large diel vertical migrations from the deep-sea zone to the surface. Although there is a trade-off between a higher food availability at the upper layers and an energy cost and predation risk, incursion towards the ... ...

    Abstract Most mesopelagic fishes perform large diel vertical migrations from the deep-sea zone to the surface. Although there is a trade-off between a higher food availability at the upper layers and an energy cost and predation risk, incursion towards the surface also implies a transport by currents, where the fish are exposed to a stranding risk on the coast. Here, we reported the first documented stranding of mesopelagic fishes along the southeast shore of Gran Canaria Island. Our study hypothesized that (1) the influence of the Canary Current, (2) the dominant incidence of the Trade Winds during summer, and (3) the presence of an upwelling filament coupled with an anticyclonic eddy south of Gran Canaria Island were the causative mechanisms of the strandings. Diaphus dumerilii (Myctophidae family) was the main species found as observed from an external morphological analysis using traditional taxonomy. The otolith contour analysis suggested the presence of other Diaphus spp. and Lobianchia dofleini. Nevertheless, the otolith morphological features described in the literature suggested that all the specimens were actually D. dumerelii. Errors in the identification were mainly due to the high intraspecific variability found in the otolith morphology. Even so, two patterns of oval and elliptic shapes were described with significant differences in its morphometry.
    Keywords Diaphus ; Lobianchia ; coasts ; energy costs ; fish ; food availability ; intraspecific variation ; morphometry ; otoliths ; predation ; risk ; summer ; taxonomy ; trade ; Canary Islands
    Language English
    Dates of publication 2022-1208
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2606558-7
    ISSN 2076-2615
    ISSN 2076-2615
    DOI 10.3390/ani12243465
    Database NAL-Catalogue (AGRICOLA)

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