Russian–american Long-Term Census of the Arctic: Benthic Fishes Trawled in the Chukchi Sea and Bering Strait, August 2004

Mecklenburg, Catherine W.; Stein, David L.; Sheiko, Boris A.; Чернова, Н. В.; Mecklenburg, T. Anthony; Holladay, Brenda A.

doi:10.1898/1051-1733(2007)88[168:rlcota]2.0.co;2

Cited by 42 publications

(44 citation statements)

References 6 publications

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“…Further, sea stars in Norton Sound and the southeastern Chukchi Sea are not known to feed on ophiuroids (Feder & Jewett 1978). Flatfishes and Chionoecetes opilio in the southeastern Bering Sea, however, do utilize ophiuroids as a food source (Feder & Jewett 1980, 1981, and both taxa are less prevalent in the northern than in the southern Chukchi Sea , Mecklenburg et al 2007, present study), possibly contributing to the dominance of ophiuroids in the north. Dense patches of the gelatinous apodid holothurian Myriotrochus rinkii occurred at some soft-bottom stations where Ophiura sarsi was uncommon or absent.…”

Section: Community Compositionmentioning

confidence: 56%

Community structure of epibenthic megafauna in the Chukchi Sea

Bluhm

Iken²,

Mincks³

et al. 2009

Aquat. Biol.

111

105

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Climate change and increased focus on resource development in Arctic Seas have fueled interest in the Chukchi Sea, yet few quantitative studies have been conducted on the larger, epifaunal component of seafloor communities, which serves important roles in sediment biogeochemical processes and provides a food source for fishes and marine mammals. Here we provide quantitative data on the present condition of benthic epifaunal abundance and biomass from the Chukchi shelf and examine the influence of environmental variables on epifaunal communities. We . Overall, abundance and biomass were dominated by echinoderms (66 and 45%, respectively) and crustaceans (17 and 31%, respectively). The ophiuroid Ophiura sarsi and the snow crab Chionoecetes opilio overwhelmingly dominated abundance and biomass. The holothurian Myriotrochus rinkii also occurred in large numbers, and the urchin Strongylocentrotus pallidus was another major contributor to biomass. A total of 165 taxa (mostly species) were identified; the highest numbers were Mollusca (45) and Crustacea (33). Cluster analysis identified 6 distinct groups plus 6 unique stations with 54 to 88% between-cluster dissimilarity, with separation based largely on substrate type and latitude. Water mass characteristics and indices of food availability appeared less influential in generating the observed composition, abundance and biomass patterns. Comparisons with previous studies suggested an increase in overall epibenthic biomass since 1976, including an increase in the biomass of C. opilio.

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Section: Community Compositionmentioning

confidence: 56%

Community structure of epibenthic megafauna in the Chukchi Sea

Bluhm

Iken²,

Mincks³

et al. 2009

Aquat. Biol.

111

105

View full text Add to dashboard Cite

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“…1, those are the specimens labeled with an S to indicate the solid-band morphotype (described below). Barcodes from specimens similar to specimens identified by Chernova as G. platycephalus (e.g., Mecklenburg et al 2007;Balushkin et al 2011) also fall within the G. hemifasciatus clade. In Fig.…”

Section: Resultsmentioning

confidence: 81%

“…No specimens in our fresh sample could be identified as G. platycephalus from the key published in Chernova (2000). The barcodes from specimens similar to G. bilabrus and G. barsukovi identified by Chernova (e.g., Mecklenburg et al 2007;Balushkin et al 2011) fall within the G. viridis clade. We were not able to morphologically distinguish between G. barsukovi and G. bilabrus in the fresh sample except that the males of G. viridis appeared to equate to G. barsukovi and the females to G. bilabrus (designated by male and female symbols in Fig.…”

Section: Resultsmentioning

confidence: 97%

“…1), the minor genetic variation seen is not consistent by coloration, sex, or geographic location. The barcodes from specimens identified as G. knipowitschi by Chernova (e.g., CAS 228491, UAM 5520, UAM 5521, ZIN uncatalogued in Table 1) or similar to them (as in, e.g., Mecklenburg et al 2007;Balushkin et al 2011), including those that could be identified as G. knipowitschi from her key (Chernova 2000), fall within the G. hemifasciatus clade. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…These species have long been familiar to field and laboratory scientists and observers in northern Pacific regions. Accumulation of fresh material for the current analysis began with the first expedition of the Russian-American Long-Term Census of the Arctic (RUSALCA) in 2004, during which Russian and American scientists' identifications of the Gymnelus species differed (Mecklenburg et al 2007). Since then, we have collected material from two more RUSALCA expeditions in 2009 and 2012, and several other expeditions from 2006 to 2013 conducted by other programs; the disagreement over identifications continues.…”

Section: Introductionmentioning

confidence: 99%

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Reassessment of multiple species of Gymnelus (Teleostei: Zoarcidae) in Pacific Arctic and boreal regions

Mecklenburg

Anderson

2015

Zootaxa

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Recently described new nominal species and resurrected species in the eelpout genus Gymnelus Reinhardt 1834 were reassessed for validity using fresh material collected in Pacific Arctic regions and a large body of data from a previous systematic review of the genus. The analysis reported here included both DNA barcodes and morphology. Only two species were validated: G. viridis (Fabricius 1780) and G. hemifasciatus Andriashev 1937. The latter species occurred as two morphotypes for which there is some evidence of difference in ecological preference, but the available environmental data are not robust enough to firmly identify or verify ecophenotypes.

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