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Article ; Online: Occurrence of tripletail Lobotes surinamensis (Bloch, 1790) in the inner Bristol Channel, UK.

Ellis, Jim R / Rumney, Paul / Cogan, Stephanie

2024 Volume 104, Issue 4, Page(s) 1251–1254

Abstract: A specimen of tripletail Lobotes surinamensis (total length: 402 mm, total mass: 1262 g) was caught in the shallow waters of the inner Bristol Channel on September 2, 2019, with this only the second known capture of this species from the British Isles. ... ...

Abstract	A specimen of tripletail Lobotes surinamensis (total length: 402 mm, total mass: 1262 g) was caught in the shallow waters of the inner Bristol Channel on September 2, 2019, with this only the second known capture of this species from the British Isles. Given the cosmopolitan distribution of this species, the potential origin of this specimen is uncertain.
MeSH term(s)	Animals ; Perciformes ; United Kingdom ; Time Factors
Language	English
Publishing date	2024-01-19
Publishing country	England
Document type	Journal Article
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.15634
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Article ; Online: Bycatch and discarding patterns of dogfish and sharks taken in English and Welsh commercial fisheries.

Silva, Joana F / Ellis, Jim R

Journal of fish biology

2019 Volume 94, Issue 6, Page(s) 966–980

Abstract: At-sea observer programmes can provide spatio-temporal data on the sizes and quantities of fish being either discarded or retained, including for species and size categories that may not be sampled effectively during scientific surveys. Such data were ... ...

Abstract	At-sea observer programmes can provide spatio-temporal data on the sizes and quantities of fish being either discarded or retained, including for species and size categories that may not be sampled effectively during scientific surveys. Such data were analysed for English and Welsh fisheries operating on the continental shelf of the North Sea ecoregion (ICES Divisions 4a-c and 7d) and Celtic Seas ecoregion (ICES Divisions 6a, 7a-c, e-k) for the period (2002-2016). These data were collated for four main gear types: beamtrawl, nephrops and otter trawls, and nets (including gillnets, tangle nets and trammel nets). Beamtrawlers caught proportionally more smaller individuals than otter trawlers, whilst nets were the most size-selective gear for larger sharks. Size-related discarding was observed, with smaller spurdog Squalus acanthias and starry smooth-hound Mustelus asterias (< 60 cm total length, L
MeSH term(s)	Animals ; Atlantic Ocean ; Dogfish ; England ; Fisheries/statistics & numerical data ; North Sea ; Sharks ; Squalus ; Wales
Language	English
Publishing date	2019-04-03
Publishing country	England
Document type	Journal Article
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.13899
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Article: The influence of natural and anthropogenic factors on demersal fauna in the western English Channel and Celtic Sea

Fincham, Jennifer I / Veneziano, Alessio / Ellis, Jim R

Elsevier B.V. Journal of sea research. 2020 Oct., v. 165

2020

Abstract: Displacement of fisheries through management has the potential to re-distribute the anthropogenic pressures associated with fishing practices. These anthropogenic pressures occur concurrently with naturally occurring environmental processes, and their ... ...

Abstract	Displacement of fisheries through management has the potential to re-distribute the anthropogenic pressures associated with fishing practices. These anthropogenic pressures occur concurrently with naturally occurring environmental processes, and their combined influences can alter the structure of species assemblages across a region. Spatial variability in the demersal assemblages in the Celtic Sea and western English Channel were examined in relation to the influence of abrasion (relating to trawling pressure from bottom-towed fishing gears) and natural hydrodynamic processes (using kinetic energy as a measure of bed shear stress) using canonical correspondence analysis. Kinetic energy graduated from low levels in the western part of the study area to higher levels in the east, whilst trawling pressure varied at smaller spatial scales largely focussed on fishing grounds. Species assemblages were correlated with kinetic energy, with some species of commercial value being more strongly associated with areas subject to increased trawling pressure. However, the species assemblages at similar stages along this gradient of kinetic energy differed between ICES Divisions within the study area. Due to these regional differences, any management measures that may result in the re-distribution of fishing pressure should consider the potential impact on those assemblages (and associated species) that may then be subject to increased fishing disturbance.
Keywords	correspondence analysis ; fauna ; hydrodynamics ; kinetic energy ; research ; shear stress ; English Channel
Language	English
Dates of publication	2020-10
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ISSN	1385-1101
DOI	10.1016/j.seares.2020.101956
Database	NAL-Catalogue (AGRICOLA)

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Article: Bycatch and discarding patterns of dogfish and sharks taken in English and Welsh commercial fisheries

Silva, Joana F. / Ellis, Jim R.

Journal of fish biology. 2019 June, v. 94, no. 6

2019

Abstract: At‐sea observer programmes can provide spatio‐temporal data on the sizes and quantities of fish being either discarded or retained, including for species and size categories that may not be sampled effectively during scientific surveys. Such data were ... ...

Abstract	At‐sea observer programmes can provide spatio‐temporal data on the sizes and quantities of fish being either discarded or retained, including for species and size categories that may not be sampled effectively during scientific surveys. Such data were analysed for English and Welsh fisheries operating on the continental shelf of the North Sea ecoregion (ICES Divisions 4a–c and 7d) and Celtic Seas ecoregion (ICES Divisions 6a, 7a–c, e–k) for the period (2002–2016). These data were collated for four main gear types: beamtrawl, nephrops and otter trawls, and nets (including gillnets, tangle nets and trammel nets). Beamtrawlers caught proportionally more smaller individuals than otter trawlers, whilst nets were the most size‐selective gear for larger sharks. Size‐related discarding was observed, with smaller spurdog Squalus acanthias and starry smooth‐hound Mustelus asterias (< 60 cm total length, LT) usually being discarded. Such size‐based selection was not evident for lesser‐spotted dogfish Scyliorhinus canicula, which was generally landed as bait. Temporal changes in the discard–retention patterns were evident for S. acanthias and porbeagle Lamna nasus, with increased regulatory discarding as management measures became restrictive. A corresponding increase in the proportion of the non‐quota M. asterias retained was also observed over the study period. Knowledge of the size‐based discard–retention patterns by métier can also help inform on where future studies on discard survival could usefully be undertaken.
Keywords	Lamna nasus ; Mustelus mustelus ; Scyliorhinus canicula ; Squalus acanthias ; bycatch ; continental shelf ; ecoregions ; gillnets ; North Sea
Language	English
Dates of publication	2019-06
Size	p. 966-980.
Publishing place	Blackwell Publishing Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.13899
Database	NAL-Catalogue (AGRICOLA)

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Article: Decline in Atlantic wolffish Anarhichas lupus in the North Sea: Impacts of fishing pressure and climate change

Bluemel, Joanna K. / Fischer, Simon H. / Kulka, David W. / Lynam, Christopher P. / Ellis, Jim R.

Journal of fish biology. 2022 Jan., v. 100, no. 1

2022

Abstract: Anarhichas lupus is a boreo‐Arctic species with biological characteristics often associated with vulnerability to overexploitation. Although not commercially targeted in the North Sea, A. lupus is a bycatch species in mixed demersal fisheries. Here we ... ...

Abstract	Anarhichas lupus is a boreo‐Arctic species with biological characteristics often associated with vulnerability to overexploitation. Although not commercially targeted in the North Sea, A. lupus is a bycatch species in mixed demersal fisheries. Here we provide an overview of the status of A. lupus in the North Sea, as observed from commercial landings and fishery‐independent trawl survey data. A. lupus was once common across much of the central and northern North Sea but, since the 1980s, have declined in abundance, demographic characteristics (reduced size) and geographical range, with the shallower and more southerly parts of its range most impacted. A. lupus is still relatively frequent in the northern North Sea, where fishing intensity, though decreasing, is high. Bycatch through fishing remains a potential threat and, considering the likely impacts of predicted climate change on cold‐water species, risks of further regional depletion and/or range contraction remain. Whether or not A. lupus is able to re‐establish viable populations in former habitat in UK coastal waters is unknown. Given the lack of data, the precautionary principle would suggest that manageable pressures be minimized where the species and its habitat are at risk of further impacts, and more regular assessments of population status be undertaken.
Keywords	Anarhichas lupus ; bycatch ; climate change ; decline ; fish ; habitats ; precautionary principle ; risk ; surveys ; North Sea
Language	English
Dates of publication	2022-01
Size	p. 253-267.
Publishing place	Blackwell Publishing Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.14942
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Diet composition of starry smooth-hound Mustelus asterias and methodological considerations for assessing the trophic level of predatory fish.

McCully Phillips, Sophy R / Grant, Alastair / Ellis, Jim R

Journal of fish biology

2020 Volume 96, Issue 3, Page(s) 590–600

Abstract: The stomach contents of 640 starry smooth-hound Mustelus asterias from the north-east Atlantic were examined. The diet was dominated by crustaceans (98.8% percentage of index of relative importance, %IRI), with the two main prey species being hermit crab ...

Abstract	The stomach contents of 640 starry smooth-hound Mustelus asterias from the north-east Atlantic were examined. The diet was dominated by crustaceans (98.8% percentage of index of relative importance, %IRI), with the two main prey species being hermit crab Pagurus bernhardus (34% IRI) and flying crab Liocarcinus holsatus (15% IRI). Ontogenetic dietary preferences showed that smaller individuals [20-69 cm total length (L
MeSH term(s)	Animals ; Crustacea ; Diet ; Elasmobranchii/physiology ; Feeding Behavior/physiology ; Food Chain ; Gastrointestinal Contents ; North Sea ; Nutritional Status ; Oceans and Seas ; Predatory Behavior/physiology
Language	English
Publishing date	2020-02-19
Publishing country	England
Document type	Journal Article
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.14245
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Article ; Online: Angel sharks (Squatinidae): A review of biological knowledge and exploitation.

Ellis, Jim R / Barker, Joanna / McCully Phillips, Sophy R / Meyers, Eva K M / Heupel, Michelle

Journal of fish biology

2021 Volume 98, Issue 3, Page(s) 592–621

Abstract: Angel sharks (Squatina spp.) are distributed in warm temperate to tropical waters around the world. Many species occur in shelf seas and exhibit seasonal inshore-offshore migrations, moving inshore to give birth. Consequently, there can be high spatial ... ...

Abstract	Angel sharks (Squatina spp.) are distributed in warm temperate to tropical waters around the world. Many species occur in shelf seas and exhibit seasonal inshore-offshore migrations, moving inshore to give birth. Consequently, there can be high spatial overlap of angel shark populations with fisheries and other human activities. Their dorso-ventrally flattened body shape, large size (most species attain >100 cm total length, L
MeSH term(s)	Animal Distribution ; Animals ; Conservation of Natural Resources/trends ; Fisheries ; Human Activities ; Mediterranean Sea ; Reproduction/physiology ; Sharks/physiology
Language	English
Publishing date	2021-01-04
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.14613
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Decline in Atlantic wolffish Anarhichas lupus in the North Sea: Impacts of fishing pressure and climate change.

Bluemel, Joanna K / Fischer, Simon H / Kulka, David W / Lynam, Christopher P / Ellis, Jim R

Journal of fish biology

2021 Volume 100, Issue 1, Page(s) 253–267

Abstract: Anarhichas lupus is a boreo-Arctic species with biological characteristics often associated with vulnerability to overexploitation. Although not commercially targeted in the North Sea, A. lupus is a bycatch species in mixed demersal fisheries. Here we ... ...

Abstract	Anarhichas lupus is a boreo-Arctic species with biological characteristics often associated with vulnerability to overexploitation. Although not commercially targeted in the North Sea, A. lupus is a bycatch species in mixed demersal fisheries. Here we provide an overview of the status of A. lupus in the North Sea, as observed from commercial landings and fishery-independent trawl survey data. A. lupus was once common across much of the central and northern North Sea but, since the 1980s, have declined in abundance, demographic characteristics (reduced size) and geographical range, with the shallower and more southerly parts of its range most impacted. A. lupus is still relatively frequent in the northern North Sea, where fishing intensity, though decreasing, is high. Bycatch through fishing remains a potential threat and, considering the likely impacts of predicted climate change on cold-water species, risks of further regional depletion and/or range contraction remain. Whether or not A. lupus is able to re-establish viable populations in former habitat in UK coastal waters is unknown. Given the lack of data, the precautionary principle would suggest that manageable pressures be minimized where the species and its habitat are at risk of further impacts, and more regular assessments of population status be undertaken.
MeSH term(s)	Animals ; Climate Change ; Ecosystem ; Fisheries ; Hunting ; North Sea
Language	English
Publishing date	2021-12-07
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.14942
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Diet composition of starry smooth‐hound Mustelus asterias and methodological considerations for assessing the trophic level of predatory fish

McCully Phillips, Sophy R. / Grant, Alastair / Ellis, Jim R.

Journal of fish biology. 2020 Mar., v. 96, no. 3

2020

Abstract: The stomach contents of 640 starry smooth‐hound Mustelus asterias from the north‐east Atlantic were examined. The diet was dominated by crustaceans (98.8% percentage of index of relative importance, %IRI), with the two main prey species being hermit crab ...

Abstract	The stomach contents of 640 starry smooth‐hound Mustelus asterias from the north‐east Atlantic were examined. The diet was dominated by crustaceans (98.8% percentage of index of relative importance, %IRI), with the two main prey species being hermit crab Pagurus bernhardus (34% IRI) and flying crab Liocarcinus holsatus (15% IRI). Ontogenetic dietary preferences showed that smaller individuals [20–69 cm total length (LT) n = 283] had a significantly lower diversity of prey than larger individuals (70–124 cm LT, n = 348); however, 18 prey species were found exclusively in smaller individuals and eight prey taxa were found exclusively in larger individuals. Larger commercially important brachyurans such as edible crab Cancer pagurus and velvet swimming crab Necora puber were more prevalent in the diet of larger individuals. Specimens from the North Sea ecoregion had a lower diversity of prey types for a given sample size than fish from the Celtic Seas ecoregion. Whilst cumulative prey curves did not reach an asymptote, this was primarily due to the high taxonomic resolution utilized and 95% of the diet was described by just seven crustacean taxa. The trophic level (TL) was calculated as 4.34 when species‐level prey categories were used. This fine‐scale taxonomic resolution resulted in a TL estimate close to a whole level above that estimated using wider taxonomic groupings. This large bias has important methodological implications for TL studies based on categorized prey data, particularly those of predatory fish.
Keywords	Cancer pagurus ; Mustelus mustelus ; Pagurus ; crabs ; diet ; ecoregions ; ontogeny ; predatory fish ; prey species ; sample size ; stomach ; trophic levels ; North Sea
Language	English
Dates of publication	2020-03
Size	p. 590-600.
Publishing place	Blackwell Publishing Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	410564-3
ISSN	1095-8649 ; 0022-1112
ISSN (online)	1095-8649
ISSN	0022-1112
DOI	10.1111/jfb.14245
Database	NAL-Catalogue (AGRICOLA)

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Article: Are fish sensitive to trawling recovering in the Northeast Atlantic?

Rindorf, Anna / Gislason, Henrik / Burns, Finlay / Ellis, Jim R / Reid, David

Journal of applied ecology. 2020 Oct., v. 57, no. 10

2020

Abstract: The protection of sensitive species from overfishing is a key aspect of the ecosystem approach to fisheries management. We use life‐history parameters and knowledge of fish shape and habitat to estimate the sensitivity of 270 species in the Northeast ... ...

Abstract	The protection of sensitive species from overfishing is a key aspect of the ecosystem approach to fisheries management. We use life‐history parameters and knowledge of fish shape and habitat to estimate the sensitivity of 270 species in the Northeast Atlantic to demersal trawling and compare sensitivity to the most recent IUCN categorization. Species classified as threatened were on average significantly more sensitive to trawling than other species. Using trawl surveys in European Atlantic waters from 36°N to 62°N, we estimated indicators of abundance of 31 highly sensitive species and compared changes in abundance to sensitivity, management measures, and value of landings. The abundance of 23 of the 31 sensitive species increased after year 2000 with 14 of the species showing increases significant at the 5% level. The increases were not due to specific management measures, as less than half of the species were covered by catch limits. Furthermore, sensitivity or value of landings was not related to trends in abundance. Three species (Atlantic wolf‐fish, tusk and starry ray) declined significantly. These species are all at their southern distributional limit in the North Sea. Synthesis and applications. We recommend monitoring the development of sensitive species to identify species under pressure and allow rapid management actions before species enter the IUCN threatened category. Furthermore, we recommend taking precautions where species are under combined pressure from climate change and fishing.
Keywords	Anarhichadidae ; applied ecology ; climate change ; ecosystems ; fish ; habitats ; life history ; North Sea
Language	English
Dates of publication	2020-10
Size	p. 1936-1947.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	NAL-AP-2-clean ; JOURNAL ARTICLE
ZDB-ID	410405-5
ISSN	1365-2664 ; 0021-8901
ISSN (online)	1365-2664
ISSN	0021-8901
DOI	10.1111/1365-2664.13693
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