Distribution and size composition of the arctic lamprey Lethenteron camtschaticum in the North Pacific

Орлов, А. М.; Baitalyuk, A. A.; Pelenev, D. V.

doi:10.1134/s0001437014020192

Cited by 20 publications

(10 citation statements)

References 8 publications

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“…Halliday ; Orlov et al . , ) suggests that most conodonts that lived offshore may have been active swimmers (nekton) with a pelagic mode of life thriving in the photic zone, while others may have favoured deeper waters. Many conodonts that lived on the continental shelves may instead have preferred the bottom and mid‐water environments, and have had a nektobenthic mode of life as suggested by Fåhræus & Barnes ().…”

Section: Distribution Of Conodonts Related To Climate and Water Tempementioning

confidence: 99%

Baltoscandian conodont biofacies fluctuations and their link to Middle Ordovician (Darriwilian) global cooling

Rasmussen

Stouge

2018

Palaeontology

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The Middle Ordovician conodont genera that are suitable for palaeoenvironmental interpretations from the epicontinental Baltoscandian platform have been identified and evaluated to establish and describe conodont biofacies and their relationship to global cooling. The construction of biofacies was based on multivariate statistical analyses of more than 375 700 conodont specimens from 520 samples and 21 localities across Baltica. Three distinct, recurrent and laterally extensive conodont biofacies existed across the Baltoscandian platform of the Baltica continent during the Dapingian and early to middle Darriwilian stages (Middle Ordovician). A relatively shallow water conodont assemblage named the Baltoniodus–Microzarkodina Biofacies characterized the inner shelf localities in central Sweden, Estonia, Russia and Ukraine. In the distal shelf areas, patterns are more complex. Here, genera of the Periodon Biofacies characterized the shelf margin areas of the Scandinavian Caledonides facing the relatively warm Iapetus Ocean towards the north, whereas the Protopanderodus Biofacies dominated the distal shelf areas facing the cooler Tornquist Sea towards the south‐west. Although these three main biofacies continued to dominate during the succeeding Darriwilian stage, distinct changes in the distribution of biofacies took place during the transition from the Dapingian Stage to the Darriwilian. We argue that the biofacies change was triggered by a regressive event related to early Darriwilian cooling, and that the palaeoclimatological changes influenced the Baltic conodont faunas near the Tornquist Sea margin before those of the Iapetus margin (early vs middle Darriwilian).

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Section: Distribution Of Conodonts Related To Climate and Water Tempementioning

confidence: 99%

Baltoscandian conodont biofacies fluctuations and their link to Middle Ordovician (Darriwilian) global cooling

Rasmussen

Stouge

2018

Palaeontology

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“…Although less comprehensive and less systematic, previous compilations of single‐species distributions of anadromous lampreys in this region similarly placed the Arctic Lamprey's distribution near shore and the Pacific Lamprey's distribution near the continental slope (Orlov et al. , ).…”

Section: Discussionmentioning

confidence: 87%

“…Long‐term data on Arctic Lamprey captures in the North Pacific Ocean (TL range = 15–79 cm) suggest that the greatest abundance occurs in the western Bering Sea within the upper 100 m of the water column (Orlov et al. ), which coincides with pelagic fishes found in nearshore areas. Similarly, Pacific Lamprey captures in the North Pacific Ocean (TL range = 12–85 cm) are most abundant in the Bering Sea but are located in deeper waters and throughout the water column (Orlov et al.…”

mentioning

confidence: 94%

“…Lamprey captures in the Atlantic Ocean provide evidence that first-year Sea Lampreys feed on small fishes in benthic waters of the continental shelf, whereas older Sea Lampreys feed on large pelagic species near the continental slope (Halliday 1991). Long-term data on Arctic Lamprey captures in the North Pacific Ocean (TL range = 15-79 cm) suggest that the greatest abundance occurs in the western Bering Sea within the upper 100 m of the water column (Orlov et al 2014), which coincides with pelagic fishes found in nearshore areas. Similarly, Pacific Lamprey captures in the North Pacific Ocean (TL range = 12-85 cm) are most abundant in the Bering Sea but are located in deeper waters and throughout the water column (Orlov et al 2008), which coincides with benthic and pelagic fishes found offshore.…”

mentioning

confidence: 99%

“…However, the vast geographic area over which anadromous lampreys feed and the difficulty in capturing them at sea make this an arduous task. Although general distributions have been established for Arctic Lampreys and Pacific Lampreys by combining multiple years and multiple sources of data for the North Pacific Ocean (Orlov et al 2008(Orlov et al , 2014, details pertaining to interannual variation or ecosystem correlates are precluded in this approach. As a result, it is unknown whether specific habitats are consistently utilized by lampreys or why certain areas may be more important for one species or another.…”

mentioning

confidence: 99%

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Spatial Differences in the Distributions of Arctic and Pacific Lampreys in the Eastern Bering Sea

Siwicke

Seitz

2018

Trans Am Fish Soc

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The Arctic Lamprey Lethenteron camtschaticum and Pacific Lamprey Entosphenus tridentatus are ecologically and culturally valuable native species that co‐occur in the eastern Bering Sea. Lamprey wounds are often observed on fishes in this region, yet there is a paucity of information on the distribution of anadromous lampreys, lamprey–host interactions, and foraging behavior in the ocean. Our hypothesis was that each lamprey species would be positively associated (distribution and abundance) with their presumed hosts: Arctic Lampreys with smaller fishes that could easily be killed, and Pacific Lampreys with larger hosts that could sustain blood feeding. To examine lamprey distribution, abundance, and associations, we utilized data from two fishery‐independent surveys—one epipelagic trawl survey and one benthic trawl survey—conducted between 2002 and 2012 in the eastern Bering Sea. Distinct distributions of lamprey species were evident in models of their presence and absence by latitude and longitude. Arctic Lampreys inhabited the northern regions on the inner/middle continental shelf in depths less than 100 m, while Pacific Lampreys inhabited waters deeper than 150 m along the continental slope. Pacific Herring Clupea pallasii and juvenile salmonids were found in regions with relatively high Arctic Lamprey catches in the epipelagic trawl survey, and catches of lampreys and these potential hosts were positively correlated. Demersal groundfishes were found in regions with relatively high Pacific Lamprey abundance in the benthic trawl survey, but catches of Pacific Lampreys and these hosts were not consistent. We conclude that Arctic Lampreys and Pacific Lampreys are segregated in the eastern Bering Sea, and although differences in their distributions may be explained by species‐specific host preferences, alternate explanations include differences in seasonal movements, source river locations, and marine residence times. This study provides an initial baseline of the oceanic ecology of lampreys, which increases our understanding of species‐specific differences beyond traditional freshwater studies.

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Pacific Lamprey and Western River Lamprey marine ecology: Insight from new ocean collections

Weitkamp

Tuttle

Ward

et al. 2023

N American J Fish Manag

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Little is known about the marine ecology of anadromous Pacific Lamprey Entosphenus tridentatus and Western River Lamprey Lampetra ayresii. This information is needed to determine how marine life regulates adult abundances and identify management actions that may benefit declining populations. To address this deficit, we compiled historic data, collected lamprey from marine stock assessment surveys and commercial fisheries, and documented fish with Pacific Lamprey wounds. Pacific Lamprey were most commonly caught by midwater trawls targeting Pacific Hake Merluccius productus along the continental shelf break from northern California to northern Washington. Pacific Lamprey ranged in size from 115 mm total length (TL) and 2.9 g to 714 mm TL and 655g (n = 1,912), and were expected to represent multiple ocean ages. The vast majority (93%) of Pacific Lamprey were small (< 300 mm TL), likely in their first year in marine waters. Growth for small Pacific Lamprey was estimated as 0.37 mm/d and 0.13 g/d over the summer. Gut fullness for Pacific Lamprey was high (5.5% of body weight [BW]), but highly variable for larger individuals (range 0‐55% BW). Our results suggest there is a positive relationship between calendar day and lamprey length and condition factor in most years, while the effect of latitude varies by life stage. We documented Pacific Lamprey wounds on 240 individual fish, representing 16 species, of which 6 species are new lamprey hosts. We had comparably few records for Western River Lamprey (n = 72; mean length = 285.5 mm TL), which were primarily found in surface waters on the continental shelf from northern California to southern British Columbia. Our results have implications for both fisheries and conservation management, including development of best practices for lamprey caught by net fisheries, and using new marine information to inform conservation actions.

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Distribution and size composition of the arctic lamprey Lethenteron camtschaticum in the North Pacific

Cited by 20 publications

References 8 publications

Baltoscandian conodont biofacies fluctuations and their link to Middle Ordovician (Darriwilian) global cooling

Baltoscandian conodont biofacies fluctuations and their link to Middle Ordovician (Darriwilian) global cooling

Spatial Differences in the Distributions of Arctic and Pacific Lampreys in the Eastern Bering Sea

Pacific Lamprey and Western River Lamprey marine ecology: Insight from new ocean collections

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