Distribution of viral haemorrhagic septicaemia virus in wild fish species of the North Sea, north east Atlantic Ocean and Irish Sea

Continuous Plankton Recorder records from the North Sea and north-east Atlantic from September 1997 to March 1998 indicate an exceptional influx of oceanic indicator species into the North Sea. These inflow events, according to historical evidence, have only occurred sporadically during this century. This exceptional inflow and previous inflow events are discussed in relation to their similarity in terms of their physical and climatic conditions.

Download Full-text

Ovary resorption in the Norway lobster (Nephrops norvegicus) and its possible causes with special reference to sperm storage

Helgoland Marine Research ◽

10.1186/s10152-020-00543-8 ◽

2020 ◽

Vol 74 (1) ◽

Author(s):

Carola Becker ◽

Jaimie T. A. Dick ◽

E. Mánus Cunningham ◽

Mathieu Lundy ◽

Ewen Bell ◽

...

Keyword(s):

North Sea ◽

Demographic Data ◽

Irish Sea ◽

Natural Phenomenon ◽

Nephrops Norvegicus ◽

North East ◽

The North ◽

Norway Lobster ◽

The North Sea ◽

Reproductive Cycles

Abstract The Norway lobster, Nephrops norvegicus, is an important fisheries species in the North-East Atlantic area. In some circumstances, mature females of Nephrops norvegicus can resorb their ovary rather than completing spawning, but the implications of this phenomenon to reproductive biology and fisheries sustainability are not known. To understand after effects of ovary resorption, we studied long-term demographic data sets (1994–2017) collected from the western Irish Sea and the North Sea. Our considerations focused on potential correlations among the frequency of resorption, female insemination, and body size of resorbing females. Resorption was continuously rare in the western Irish Sea (less than 1%); whereas much higher rates with considerable year-to-year variation were observed in the North Sea (mean 9%). Resorption started in autumn after the spawning season (summer) had passed. The frequency stayed high throughout winter and declined again in spring. As sperm limitation can occur in male-biased fisheries, we expected a lack of insemination could be responsible for resorption, but affected females were indeed inseminated. Resorbing females were significantly larger than other sexually mature females in the North Sea, but the opposite trend was observed in the western Irish Sea. It is therefore possible that other, environmental factors or seasonal shifts, may trigger females to resorb their ovaries instead of spawning. Resorption may as well represent a natural phenomenon allowing flexibility in the periodicity of growth and reproduction. In this sense, observations of annual versus biennial reproductive cycles in different regions may be closely linked to the phenomenon of ovary resorption.

Download Full-text

The plerocercus of Grillotia erinaceus as a biological tag for haddock Melanogrammus aeglefinus in the north sea and north-east Atlantic

Journal of Fish Biology ◽

10.1111/j.1095-8649.1977.tb05712.x ◽

1977 ◽

Vol 11 (6) ◽

pp. 555-565 ◽

Cited By ~ 5

Author(s):

B. Lubieniecki

Keyword(s):

North Sea ◽

Melanogrammus Aeglefinus ◽

East Atlantic ◽

North East ◽

The North ◽

The North Sea ◽

Haddock Melanogrammus Aeglefinus ◽

Grillotia Erinaceus

Download Full-text

Monopseudocuma a new genus from the North East Atlantic and redescription of Pseudocuma gilsoni Bacescu, 1950 (Cumacea: Pseudocumatidae)

Zootaxa ◽

10.11646/zootaxa.1203.1.2 ◽

2006 ◽

Vol 1203 (1) ◽

pp. 39

Author(s):

ALISON M. MCCARTHY ◽

SARAH GERKEN ◽

DAVID MCGRATH ◽

GRACE P. MCCORMACK

Keyword(s):

North Sea ◽

West Coast ◽

New Genus ◽

East Atlantic ◽

The West ◽

The Past ◽

North East ◽

The North ◽

The North Sea

The validity of Pseudocuma gilsoni B|cescu 1950 has been questioned in the past. The recent discovery of material in Irish waters, and in the North Sea, confirms the presence of the species in the North East Atlantic and provides the opportunity to present a full redescription. A new genus, Monopseudocuma, is erected to accommodate the species. A neotype is designated from the West coast of Ireland.

Download Full-text

29 North-East Atlantic and the North Sea

10.1093/law/9780198715481.003.0029 ◽

2015 ◽

Author(s):

Long Ronán

Keyword(s):

North Sea ◽

Law Of The Sea ◽

East Atlantic ◽

Political Factors ◽

Basic Principles ◽

North East ◽

The North ◽

The North Sea ◽

The Law ◽

The Uk

This chapter assesses the legal regime of the North-East Atlantic and the North Sea. It begins by discussing some of the geographical, economic, environmental, strategic, and geo-political factors that are shaping the very distinctive regional regimes that give effect to the basic principles, as well as to many of the substantive provisions embodied in the UN Nations Convention on the Law of the Sea (LOSC) and related agreements. It provides a summary of the various maritime jurisdictional zones and boundaries claimed by the twelve coastal States that make-up the region: Belgium, Denmark, France, Germany, Iceland, Ireland, the Netherlands, Norway, Portugal, Spain, Sweden, and the UK. This is followed by a description of some of the principal regional bodies responsible for formulating and implementing various aspects of the law of the sea, including the regional seas environmental body, the EU and several fisheries management organizations.

Download Full-text

Lampropidae (Crustacea: Cumacea) from the deep north-east Atlantic and the North Sea, with two new species of Hemilamprops and Mesolamprops

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315407055063 ◽

2007 ◽

Vol 87 (5) ◽

pp. 1191-1200 ◽

Cited By ~ 1

Author(s):

Salma H. Shalla ◽

John D.D. Bishop

Keyword(s):

New Species ◽

North Sea ◽

North Atlantic ◽

First Record ◽

East Atlantic ◽

North East ◽

The North ◽

The North Sea ◽

The North Atlantic ◽

A New Species

Material collected during surveys of the Atlantic Frontier Margin (north-east Atlantic) in 1996, 1998, 2000 and 2002 includes ten species of the cumacean family Lampropidae belonging to three genera. A new species of the genus Hemilamprops, H. pterini, is described. Hemilamprops cristatus is partially re-illustrated from specimens sent to A.M. Norman by G.O. Sars. A key to the North Atlantic species of Hemilamprops is provided. A new species of the genus Mesolamprops, M. hartleyi, is described from the Atlantic Frontier Margin and the North Sea. The first record of Mesolamprops denticulatus from the Atlantic is reported. A key to the species of Mesolamprops is provided. Two species of the genus Platysympus were also found. A list of other lampropid species found in the Atlantic Frontier Margin is given.

Download Full-text