Latitudinal dependence of body condition, growth rate, and stable isotopes of juvenile capelin (Mallotus villosus) in the Bering and Chukchi Seas

Barton, Mark B.; Moran, John R.; Vollenweider, Johanna J.; Heintz, Ron A.; Boswell, Kevin M.

doi:10.1007/s00300-016-2041-8

Cited by 5 publications

(2 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, in the marine environment, stable carbon isotope ratios (δ 13 C), can show differences between benthic and pelagic foragers, between near shore and offshore foragers and between freshwater and saltwater foragers [30][31][32]. Additionally, they can reflect latitudinal gradients across ocean basins [33,34]. Stable nitrogen isotope ratios (ratio of 15 N : 14 N isotopes in a tissue, with respect to an international standard) are considered a proxy for trophic level, as nitrogen isotopes experience metabolic fractionation as they move up the food chain from prey to predator [29,35,36].…”

Section: Stable Isotopesmentioning

confidence: 99%

Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis

et al. 2020

View full text Add to dashboard Cite

Sperm whales interact with commercially important groundfish fisheries offshore in the Gulf of Alaska (GOA). This study aims to use stable isotope analysis to better understand the trophic variability of sperm whales and their potential prey, and to use dietary mixing models to estimate the importance of prey species to sperm whale diets. We analysed tissue samples from sperm whales and seven potential prey (five groundfish and two squid species). Samples were analysed for stable carbon and nitrogen isotope ratios, and diet composition was estimated using Bayesian isotopic mixing models. Mixing model results suggest that an isotopically combined sablefish/dogfish group, skates and rockfish make up the largest proportion of sperm whale diets (35%, 28% and 12%) in the GOA. The top prey items of whales that interact more frequently with fishing vessels consisted of skates (49%) and the sablefish/dogfish group (24%). This is the first known study to provide an isotopic baseline of adult male sperm whales and these adult groundfish and offshore squid species, and to assign contributions of prey to whale diets in the GOA. This study provides information to commercial fishermen and fisheries managers to better understand trophic connections of important commercial species.

show abstract

Section: Stable Isotopesmentioning

confidence: 99%

Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis

et al. 2020

View full text Add to dashboard Cite

show abstract

“…5). Эти вариации связаны с размером рыб и отражают различия в трофическом статусе отдельных размерных (возрастных) когорт сайки и мойвы [14,22]. Закономерные изменения изотопного состава азота и спектра питания по мере роста показаны на примере сайки (рис.…”

Section: материал и методыunclassified

Zooplankton composition and trophic status of hydrobionts of the Laptev and East Siberian seas

2019

View full text Add to dashboard Cite

Species composition, density, biomass and distribution of zooplankton on shelf and slope of northwestern part of the Laptev Sea and shallow-water shelf of the East Siberian Sea were studied in 2015 summer period. Using analysis of stable isotopes of carbon (13 С) and nitrogen (15N), trophic status of abundant zooplankton and fish species, and their positions in food webs of these two seas, were compared. Gut content analysis, as well stable isotope data, showed mutual changes in the trophic status of dominant fish species arctic cod, Boreogadus saida, with age.

show abstract

Zooplankton Composition and Trophic Status of Aquatic Species in the Laptev and East Siberian Seas

Горбатенко

Kiyashko

2019

Oceanology

View full text Add to dashboard Cite

Latitudinal dependence of body condition, growth rate, and stable isotopes of juvenile capelin (Mallotus villosus) in the Bering and Chukchi Seas

Cited by 5 publications

References 66 publications

Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis

Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis

Zooplankton composition and trophic status of hydrobionts of the Laptev and East Siberian seas

Zooplankton Composition and Trophic Status of Aquatic Species in the Laptev and East Siberian Seas

Contact Info

Product

Resources

About