Trophic ecology of the deep-sea cephalopod assemblage near Bear Seamount in the Northwest Atlantic Ocean

Staudinger, Michelle D.; Dimkovikj, Valerie H.; Jorgensen, Elaina; Judkins, Heather; Lindgren, Annie R.; Shea, Elizabeth K.; Vecchione, Micheal

doi:10.3354/meps13121

Cited by 12 publications

(10 citation statements)

References 73 publications

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“…Cranchiidae have been similarly found to exhibit no ontogenetic trophic shift in other locations too, across a similar size range, suggesting that this could be consistent generally (Staudinger et al, 2019). Low activity level cephalopods, such as Cranchiidae (which are among the most globally abundant cephalopods), have low trophic positions.…”

Section: Discussionmentioning

confidence: 73%

“…Another species that has been shown to undergo no ontogenetic increase in trophic position is the vampire squid, Vampyroteuthis infernalis , in a global assessment of the species’ trophic ecology (Golikov et al., 2019). When assessed at a community level, cephalopods can exhibit ontogentic shifts in trophic position, but it is variable and not all species undergo shifts (Staudinger et al., 2019). Additionally, cephalopods have been found to have similar or higher trophic positions than many much larger fish species in multiple ecosystem assessments (Jennings & van der Molen, 2015; Madigan et al., 2012), suggesting that different trophic allometries may apply to them.…”

Section: Introductionmentioning

confidence: 99%

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Functional traits explain trophic allometries of cephalopods

Murphy

Pecl

Richards

et al. 2020

Journal of Animal Ecology

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1. Individual body size strongly influences the trophic role of marine organisms and the structure and function of marine ecosystems. Quantifying trophic positionindividual body size relationships (trophic allometries) underpins the development of size-structured ecosystem models to predict abundance and the transfer of energy through ecosystems. Trophic allometries are well studied for fishes but remain relatively unexplored for cephalopods. 2. Cephalopods are important components of coastal, oceanic and deep-sea ecosystems, and they play a key role in the transfer of biomass from low trophic positions to higher predators. It is therefore important to resolve cephalopod trophic allometries to accurately represent them within size-structured ecosystem models. 3. We assessed the trophic positions of cephalopods in an oceanic pelagic (0-500 m) community (sampled by trawling in a cold-core eddy in the western Tasman Sea), comprising 22 species from 12 families, using bulk tissue stable isotope analysis and amino acid compound-specific stable isotope analysis. We assessed whether ontogenetic trophic position shifts were evident at the species-level and tested for the best predictor of community-level trophic allometry among body size, taxonomy and functional grouping (informed by fin and mantle morphology). 4. Individuals in this cephalopod community spanned two trophic positions and fell into three functional groups on an activity level gradient: low, medium and high. The relationship between trophic position and ontogeny varied among species, with the most marked differences evident between species from different functional groups. Activity-level-based functional group and individual body size are best explained by cephalopod trophic positions (marginal R 2 = 0.43). 5. Our results suggest that the morphological traits used to infer activity level, such as fin-to-mantle length ratio, fin musculature and mantle musculature are strong predictors of cephalopod trophic allometries. Contrary to established theory, not all cephalopods are voracious predators. Low activity level cephalopods have a distinct feeding mode, with low trophic positions and little-to-no ontogenetic | 2693

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Section: Discussionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Functional traits explain trophic allometries of cephalopods

Murphy

Pecl

Richards

et al. 2020

Journal of Animal Ecology

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“…All these characteristics cannot be captured with two‐dimensional images and analysis, yet are critical if the aim is to identify species or to study beak function. Indeed, 3D models are essential to study the unusual articulation and function of the beaks (Uyeno & Kier, 2005) and their ontogeny (Franco‐Santos & Alves Gonzalez Vidal, 2020; Uchikawa et al., 2009) or to extract information on trophic level (Golikov et al., 2019; Staudinger et al., 2019). As texture maps can be overlaid onto photogrammetrically derived 3D models, it will also be possible to create a 3D catalogue of beaks for identification.…”

Section: Discussionmentioning

confidence: 99%

Underwater photogrammetry for close‐range 3D imaging of dry‐sensitive objects: The case study of cephalopod beaks

Roscian

Herrel

Cornette

et al. 2021

Ecology and Evolution

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“…Prey species were organized in Myctophid fishes, other fishes, Euphausiids, Copepods, Amphipods, and other crustaceans. After the revision, the mean and SD of δ 13 C and δ 15 N values of prey were compilated (Table S2 & S3) [9,10,12,14,15,16,18,30,33,34,36,35,40,[47][48][49][50][51][52][53][54][55][56][57][58][59][60].…”

Section: Prey Groupsmentioning

confidence: 99%

“…The isotope analysis in squids has been performed using mantle muscle tissue [17,[29][30][31] beaks [32][33][34][35][36], gladii [37][38][39], statoliths [40], and eye lenses [41][42][43]. Each tissue allows the isotope analysis in a determinate time; two months approximately for muscle tissue, and life history for beaks, gladii, and eye lenses [29,41,44].…”

Section: Introductionmentioning

confidence: 99%

Beaks And Gladii of Oegopsid Squids to Understand Their Trophic Ecology Around American Waters: A Review of The Stable Isotope Analysis

Rosas‐Luis

2022

EIMBO

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The trophic ecology of squids has been studied using traditional methods of stomach content identification, there are reports of the diet of species of the order Oegopsida that described the prey and consumption of these predators in oceanic waters. Recently, the trophic ecology studies have included the analysis of hard tissues and the δ 13 C and δ 15 N to identify changes in the contribution of prey to the diet of squids, and to describe the trophic niche and overlap probability between species. This review analyzed the bibliographic references that used beaks and gladii to understand the trophic ecology of squids that inhabit in the marine waters of America. Results demonstrate that the beak of 14 oegopsid squid families have been included in this kind of analysis. The most studied squid was the Ommastrephid Dosidicus gigas in the Pacific Ocean, but many squid families (13) were analyzed in the Atlantic Ocean. The gladius was included in the hard tissue analysis, and it was reported that in addition to beaks, they are useful to describe the habitat, use of prey for squids, and feeding changes through ontogeny. As squids are fast moving predators, the use of these tissues in the isotope analysis help researchers to identify hot spots in the ocean, because these areas are the main refuges for feeding and for the development of these populations. Sympatric species can be identified by using hard tissue and isotopic analysis, as these tissues recorded the use of habitat and feeding behavior.

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Trophic ecology of the deep-sea cephalopod assemblage near Bear Seamount in the Northwest Atlantic Ocean

Cited by 12 publications

References 73 publications

Functional traits explain trophic allometries of cephalopods

Functional traits explain trophic allometries of cephalopods

Underwater photogrammetry for close‐range 3D imaging of dry‐sensitive objects: The case study of cephalopod beaks

Beaks And Gladii of Oegopsid Squids to Understand Their Trophic Ecology Around American Waters: A Review of The Stable Isotope Analysis

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