Structure and dynamics of food webs in the water column on shelf and slope grounds of the western Mediterranean

Valls, María; Sweeting, Christopher J.; Olivar, M. Pilar; Puelles, María Luz Fernández de; Pasqual, Catalina; Polunin, Nicholas V. C.; Quetglas, Antoni

doi:10.1016/j.jmarsys.2014.04.002

Cited by 42 publications

(46 citation statements)

References 81 publications

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“…Gonads were fixed in 10% buffered formalin solution, dehydrated in ascending solutions of alcohols and embedded in a methacrylate polymer resin, sectioned at a thickness of 4 µm with a manual microtome Leica Reichert-Jung 2040 3 (Leica Microsystems, Wetzlar, Germany), stained with Lee's stain (methylene blue and basic fuchsin), and mounted in a synthetic resin of dibutyl phthalate xylene on microscope slides. Gonads were classified according to their size and color and the presence or absence of specific inclusions (oil droplets, yolk, postovulatory follicles, or sperm), as well as the type of oocytes (Wallace and Selman, 1981).…”

Section: Sampling and Data Collectionmentioning

confidence: 99%

“…Only oocytes sectioned through the nucleus were taken into account. The developmental stages of the oocytes were categorized according to the descriptions in Colmenero et al (2013) that were adapted from Wallace and Selman (1981). The mean oocyte diameter by developmental stage was determined by calculating the diameter of all oocytes encountered in each subsample, and the range was set with the smallest and largest oocytes found at each developmental oocyte stage.…”

Section: Mediterranean Seamentioning

confidence: 99%

“…Fishing during spawning periods may result in targeting a specific size class of the population and thus increasing the chance of catching the older (and larger) age classes and making the stock vulnerable to reproductive collapse (van Overzee and Rijnsdorp, 2015). Because spawning is generally limited to specific areas and times (Cushing, 1990), the conservation of resources can be enhanced by limiting fishing activity in a spatiotemporal frame.…”

Section: Relevance Of Reproductive Traits For Sustainable Managementmentioning

confidence: 99%

“…The shortspine African angler (Lophius vaillanti) is found in the eastern Atlantic (Maartens and Booth, 2005). The devil anglerfish (Lophius vomerinus) occupies the southeast Atlantic and the northern and western Indian Ocean (Walmsley et al, 2005). The blackfin goosefish (Lophius gastrophysus) inhabits the western Atlantic, and the goosefish (Lophius americanus) occurs in the northwest Atlantic (Caruso, 1983).…”

mentioning

confidence: 99%

“…Both of these species of Lophius play an important role in the trophic structure of benthodemersal ecosystems because they represent major predators, along with the European hake (Merluccius merluccius) (Díaz et al, 2008). In the community structure of the northwestern Mediterranean Sea, species of anglerfish are considered top predators (Coll et al, 2006;Valls et al, 2014). They are also reported to be important in the deepsea community (depths from 200 m to the bottom of the ocean) because they are the most abundant species (Labropoulou and Papaconstantinou, 2000;Maiorano et al, 2010).…”

mentioning

confidence: 99%

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Reproductive strategy of white anglerfish (Lophius piscatorius) in Mediterranean waters: implications for management

Colmenero¹,

Tuset²,

Sánchez³

2016

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Section: Sampling and Data Collectionmentioning

confidence: 99%

Section: Mediterranean Seamentioning

confidence: 99%

Section: Relevance Of Reproductive Traits For Sustainable Managementmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Reproductive strategy of white anglerfish (Lophius piscatorius) in Mediterranean waters: implications for management

Colmenero¹,

Tuset²,

Sánchez³

2016

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Ontogenetic shift or not? Different foraging trade‐offs within the meso‐ to bathypelagic fish community

Loutrage,

Brind'Amour,

Chouvelon

et al. 2024

Ecology and Evolution

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During ontogeny, the increase in body size forces species to make trade‐offs between their food requirements, the conditions necessary for growth and reproduction as well as the avoidance of predators. Ontogenetic changes are leading species to seek out habitats and food resources that meet their needs. To this end, ontogenetic changes in nocturnal habitat (vertical use of the water column) and in the type of food resources (based on stable isotopes of nitrogen) were investigated in 12 species of deep pelagic fish from the Bay of Biscay in the Northeast Atlantic. Our results revealed the existence of major differences in the ontogenetic strategies employed by deep pelagic fishes. Some species showed ontogenetic changes in both vertical habitat use and food resources (e.g. Jewel lanternfish (Lampanyctus crocodilus) and Atlantic soft pout (Melanostigma atlanticum)). In contrast, other species showed no ontogenetic change (e.g. Koefoed's searsid (Searsia koefoedi) and Lancet fish (Notoscopelus kroyeri)). Some species only changed food resources (e.g. Spotted lanternfish (Myctophum punctatum), Spotted barracudina (Arctozenus risso) and Stout sawpalate (Serrivomer beanii)), while others seemed to be influenced more by depth than by trophic features (e.g. Bluntsnout smooth‐head (Xenodermichthys copei) and Olfer's Hatchetfish (Argyropelecus olfersii)). These results suggest that to meet their increasing energy requirements during ontogeny, some species have adopted a strategy of shifting their food resources (larger prey or prey with a higher trophic level), while others seemed to maintain their food resources but are most likely increasing the quantity of prey ingested. As fish species can have different functional roles during their development within ecosystems, characterising ontogenetic changes in mesopelagic fish species is a crucial step to be considered in future research aimed at understanding and modelling the complexity of deep‐pelagic food webs.

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Differences in the trophic ecology of micronekton driven by diel vertical migration

Romero-Romero

Choy

Hannides

et al. 2019

Limnology & Oceanography

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Many species of micronekton perform diel vertical migrations (DVMs), which ultimately contributes to carbon export to the deep sea. However, not all micronekton species perform DVM, and the nonmigrators, which are often understudied, have different energetic requirements that might be reflected in their trophic ecology. We analyze bulk tissue and whole animal stable nitrogen isotopic compositions (δ15N values) of micronekton species collected seasonally between 0 and 1250 m depth to explore differences in the trophic ecology of vertically migrating and nonmigrating micronekton in the central North Pacific. Nonmigrating species exhibit depth‐related increases in δ15N values mirroring their main prey, zooplankton. Higher variance in δ15N values of bathypelagic species points to the increasing reliance of deeper dwelling micronekton on microbially reworked, very small suspended particles. Migrators have higher δ15N values than nonmigrators inhabiting the epipelagic zone, suggesting the consumption of material during the day at depth, not only at night when they migrate closer to the surface. Migrating species also appear to eat larger prey and exhibit a higher range of variation in δ15N values seasonally than nonmigrators, likely because of their higher energy needs. The dependence on material at depth enriched in 15N relative to surface particles is higher in migratory fish that ascend only to the lower epipelagic zone. Our results confirm that stark differences in the food habits and dietary sources of micronekton species are driven by vertical migrations.

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Structure and dynamics of food webs in the water column on shelf and slope grounds of the western Mediterranean

Cited by 42 publications

References 81 publications

Reproductive strategy of white anglerfish (Lophius piscatorius) in Mediterranean waters: implications for management

Reproductive strategy of white anglerfish (Lophius piscatorius) in Mediterranean waters: implications for management

Ontogenetic shift or not? Different foraging trade‐offs within the meso‐ to bathypelagic fish community

Differences in the trophic ecology of micronekton driven by diel vertical migration

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