Knowledge (XXG)

Raitt's sand eel

Source πŸ“

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black-legged kittiwake. The fishery continues to be closed except for a small area carefully managed to make assessments of the sand eel stock. These previous problems with Raitt's sand eel fisheries and the concerns for seabirds, commercially valuable fish and marine mammals have led to calls for better management and monitoring of sand eel abundance.
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eel fishery became the largest fishery in the North Sea, with landings regularly exceeding 1 million tonnes. This high level of fishing caused a decline in stocks over time as the fishery became unsustainable. This led to both financial losses for the fishing industry and negative environmental consequences.
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side. Raitt's sand eels have a short tail fin that is deeply forked. They have a long and low dorsal fin that is twice as long as the tail fin and runs along almost the entire body. The scales on their underside are arranged randomly instead of in a distinct pattern as in many other fish. The Raitt's
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Sand eels have been fished since the 1950s. However, this was not done for industrial purposes until the 1970s when the fishing fleet for sand eel increased rapidly. The Raitt's sand eel is the most abundant species of sand eel in these fisheries and makes up over 90% of the catch. In 1977 the sand
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due to the techniques used to collect them. The netting used has a very small mesh size in order to catch the small Raitt's sand eel and larger species get caught in them. Common guillemot seabirds have repeatedly been found caught and killed in these nets and this has sparked concerns over the
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was closed down in 2000. An observed decline in Atlantic puffins was linked to reduced numbers of sand eel prey and the fishery was closed in the hope to recover the puffin population. After the closure the numbers of Raitt's sand eel increased and benefited many top predators including the
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formations. They spend most of the winter burrowed in the sediment but then enter the open water between March and June to feed as the abundance of prey increases. Even in the summer months when Raitt's sand eels emerge to feed they still burrow in the sand in the night.
266:. They live in both the shallow open ocean and coastal waters. Four other species of sand eel are also distributed in this part of the Atlantic. The fisheries here are dominated by Raitt's sand eel suggesting the Raitt's sand eel is the most abundant in the area. 596:
data has shown that seabird populations as a whole are not negatively impacted by sand eel fisheries. Some has suggested that the observed declines in seabirds such as puffins were isolated incidences that do not represent the whole population.
337:. These coastal breeding birds are heavily reliant on sand eels and therefore their population size changes in response to the amount of Raitt's sand eel present. This can give a lot of information about the abundance of sand eels in the area. 364:
that survive to adulthood and so yearly changes to temperature can cause fluctuating population size. Changes to the abundance of species connected to the Raitt's sand eel in the food web has also caused variable population size.
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copepods are an important prey item for sand eels. The population of Raitt's sand eel has been related to changes in the availability of this prey. Young Raitt's sand eels have lower survival when copepods are less abundant.
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and larger fish. Seabirds in particular rely heavily on the Raitt's sand eel to feed their chicks. When the sand eels leave their burrows to feed seabirds dive into the water to catch them and then return to their nests.
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The Raitt's sand eel is a small elongated fish that is usually about 20 cm long. The maximum length reported for this species of sand eel is 25 cm. They are silver all over with darker scales on their
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Raitt's sand eel fisheries are difficult to manage due to lack of population size data and regular population fluctuations. No catch predictions can be made for the fishery due to its instability.
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Due to their lifestyle, it has been very difficult to estimate the population size of the Raitt's sand eel. Most monitoring techniques are inappropriate and cannot detect the burrowed sand eels.
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Naylor, R., Goldburg, R., Primavera, J., Kautsky, N., Beveridge, M., Clay, J., Folke, C., Lubchenco, J., Mooney, H. & Troell, M. (2000). "Effect of aquaculture on world fish supplies".
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over the last few decades. Global production of farmed fish doubled between 1985-2000 and this created huge demands for fishmeal to feed the farmed fish. Raitt's sand eel alongside
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Fisheries of sand eel can also be harmful to seabird colonies. Fishing the Raitt's sand eel means there are less available to be eaten by the seabirds. Populations of
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effects have all been shown to have contributed to these fluctuations. As the Raitt's sand eel is found in the North Atlantic Ocean its climate is altered by the
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Sand eel species switch between open water swimming and burying themselves in the sand to avoid nearby predators. When they are not burrowed they live in
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Greenstreet, S. P. R., Armstrong, E., Mosegaard, H., Jensen, H., Gibb, I. M., Fraser, H. M., Scott, B. E., Holland, G. J. & Sharples, J. (2006).
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Raitt's sand eels breed in December and January when they briefly leave their winter burrows in the sediment. They lay their eggs in the sand which
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Imamura, H. & Odani, K. (2013). "An overview of the phylogenetic relationships of the suborder Trachinoidei (Acanthomorpha: Perciformes".
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Wright, P., Jensen, H. & Tuck, I. (2000). "The influence of sediment type on the distribution of the lesser sandeel, Ammodytes marinus".
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Raitt's sand eel have very specific habitat requirements. They are specialised to live in waters high in oxygen but with low levels of
2061: 1442:"The impact of the sandeel fishery closure on seabird food consumption, distribution, and productivity in the northwestern North Sea" 492: 2204: 1380:
Pinto, J. M., Pearson, W. H. & Anderson, J. W. (1984). "Sediment Preferences and Oil Contamination in the Pacific Sand Lance
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Heath, M. R., Rasmussen, J., Bailey, M. C., Dunn, J., Fraser, J., Gallego, A., Hay, S. J., Inglis, M. & Robinson, S. (2012).
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The evolutionary history of the Raitt's sand eel is still debated and its exact relationship to the other members of its order
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are all known predators of this species. Common guillemots feed exclusively on Raitt's sand eel during the breeding season.
2139: 2035: 330:, are now being used to assess the size of the Raitt's sand eel population. The main indicator used for sand eels are 41: 1896:"Management implications of interactions between fisheries and sandeel-dependent seabirds and seals in the North Sea" 480:
there until they hatch in February and March. The hatched sand eels live in the open water above the sediment until
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off southeast Scotland: an evaluation of area-closure fisheries management and stock abundance assessment methods"
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and resting grounds. Raitt's sand eels live in turbulent areas of the ocean and do not live in depths below 100m.
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van Deurs, M., Hartvig, M. & Steffensen, J. F. (2011). "Critical threshold size for overwintering sandeels (
1556:"The role of industrial fisheries and oceanographic change in the decline of North Sea black-legged kittiwakes" 1386: 1155: 273:. The Raitt's sand eel survives better in cooler waters and may move North to avoid warming sea temperatures. 1741:
Tasker, M. L., Camphuysen, C. J., Cooper, J., Garthe, S., Montevecchi, W. A. & Blaber, S. J. M. (2000).
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Laugier, F., Feunteun, E., Pecheyran, C. & Carpentier, A. (2015). "Life history of the Small Sandeel,
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As a result of overfishing of the Raitt's sand eel the sand eel fishery in the North Sea off the coast of
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which makes them an ideal fish for these purposes. The demand for fishmeal has increased with the rise of
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Mitchell, A., McCarthy, E., Verspoor, E. (1998). "Discrimination of the North Atlantic lesser sandeels
1825:(Raitt) .3. Effect of Temperature on Activity and Environmental-Control of Annual Cycle of Activity". 269:
The southern boundary of the Raitt's sand eel is predicted to move further North in the future due to
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The Raitt's sand eel is found across the Northeast Atlantic Ocean and is particularly abundant in the
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Daunt, F., Wanless, S., Greenstreet, S. P. R., Jensen, H., Hamer, K. C. & Harris, M. P. (2008).
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Macer, C.T. (1965). "The distribution of larval sandeels (Ammodytidae) in the southern North Sea".
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habitats. Sandbanks are the most important habitat for the sand eel as they are used as nursery,
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based on molecular and morphological evidence, with the description of a new species from Japan"
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Orr, J. W., Wildes, S., Kai, Y., Raring, N., Nakabo, T., Katugin, O. & Guyon, J. (2015).
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where they spend most of the year burrowed avoiding predators. They are also found living in
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The Raitt's sand eel is known from fishing records to have regular population fluctuations.
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van Deurs, M., van Hal, R., Tomczak, M. T., Jonasdottir, S. H. & Dolmer, P. (2009).
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Frederiksen, M., Wanless, S., Harris, M. P., Rothery, P. & Wilson, L. J. (2004).
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sand eel has a pointed jaw where the lower jaw projects further than the upper jaw.
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food web. They are the prey of a significant number of species including seabirds,
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Whitehead, P.J.P; Bauchot, M-L.; Hureau, J-C.; Nielsen, J.; Tortonese, E. (1986).
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It is difficult to distinguish this species from the other members in its genus β€˜β€™
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Pedersen, S.A., Lewy, P., Wright, P. (1999). "Assessments of the lesser sandeel (
1089:"Sandeel recruitment in the North Sea: demographic, climatic and trophic effects" 17: 2144: 2100: 525: 517: 497: 448: 341: 243: 202: 194: 2016: 1523: 1867: 1168: 952: 433: 406: 186: 116: 2066: 895: 878: 831: 810: 205:. Contrary to their name sand eels, including Raitt's sand eel, are not true 385: 263: 231: 198: 126: 66: 1912: 1895: 1759: 1742: 1696: 1621: 1605:"A spatial comparison of common guillemots and sandeels in Scottish waters" 1604: 559:
have declined in response to decreased prey levels of sand eel in the sea.
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In the sea many larger fish species prey on the Raitt's sand eel including
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Journal of the Marine Biological Association of the United Kingdom
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The impacts of intense Raitt's sand eel fishing has been debated.
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of sand eel. Warmer temperatures decrease the number of sand eel
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in relation to density dependence and zooplankton composition"
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and instead belong to the order of β€œweever-like” fishes, the
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Winslade, P. (1974). "Behavioral-Studies on Lesser Sandeel
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Fishes of the North-eastern Atlantic and the Mediterranean
730:"Systematics of North Pacific sand lances of the genus 444:
consume many sand eels in the spring and early summer.
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is unknown. There is currently no universally accepted
1211:) in the North Sea based on revised stock divisions". 879:"Size-dependent frequency response of sandeel schools" 605:
The Raitt's sand eel is currently not assessed by the
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by mitochondrial DNA restriction fragment patterns".
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All species of sand eels are used extensively in the
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negative impacts of the fishery on the environment.
2000: 1549: 1547: 1449:Canadian Journal of Fisheries and Aquatic Sciences 781:Nelson, JS; Grande, TC & Wilson, MVH (2016). 1254: 1252: 1250: 1202: 1200: 1144: 1142: 1140: 528:are the primary species used for this purpose. 234:’’ as they are all very similar in appearance. 193:. The Raitt's sand eel is member of the family 1889: 1887: 1885: 804: 802: 1736: 1734: 1732: 1730: 1728: 1650: 1648: 1646: 1318: 1316: 1082: 1080: 1078: 1076: 1074: 872: 870: 868: 866: 276:Sand eels live amongst sandy sediment of the 8: 1963:: CS1 maint: multiple names: authors list ( 1773:: CS1 maint: multiple names: authors list ( 1717:: CS1 maint: multiple names: authors list ( 1635:: CS1 maint: multiple names: authors list ( 1588:: CS1 maint: multiple names: authors list ( 1536:: CS1 maint: multiple names: authors list ( 1481:: CS1 maint: multiple names: authors list ( 1435: 1433: 1431: 1420:: CS1 maint: multiple names: authors list ( 1365:: CS1 maint: multiple names: authors list ( 1305:: CS1 maint: multiple names: authors list ( 1239:: CS1 maint: multiple names: authors list ( 1189:: CS1 maint: multiple names: authors list ( 1129:: CS1 maint: multiple names: authors list ( 1018:: CS1 maint: multiple names: authors list ( 909:: CS1 maint: multiple names: authors list ( 855:: CS1 maint: multiple names: authors list ( 766:: CS1 maint: multiple names: authors list ( 710:: CS1 maint: multiple names: authors list ( 877:Johnsen, E., Pedersen, R., Ona, E. (2009). 660: 658: 656: 1988: 1033:Naevdal, G. & Thorkildsen, S. (2002). 627: 625: 623: 621: 40: 31: 1979:"The IUCN Red List of Threatened Species" 1948: 1911: 1805: 1788:Boulcott, P. & Wright, P. J. (2008). 1758: 1686: 1620: 1573: 1290: 1114: 1062: 894: 840: 830: 751: 723: 721: 1929:"Variation in the abundance of sandeels 1743:"The impacts of fishing on marine birds" 250:for the Raitt's sand eel's suborder the 617: 1956: 1766: 1710: 1628: 1581: 1529: 1474: 1413: 1358: 1298: 1232: 1182: 1122: 1011: 902: 848: 759: 703: 512:industries. Their bodies are rich in 7: 1503:Estuarine, Coastal and Shelf Science 543:Sand eel fisheries produce a lot of 455:level predators that eat sand eels. 1839:10.1111/j.1095-8649.1974.tb05102.x 1087:Arnott, S.A, Ruxton, G.D. (2002). 25: 1603:Wright, P.J., Begg, G.S. (1997). 447:Raitt's sand eels feed mainly on 197:which includes all 31 species of 1575:10.1111/j.0021-8901.2004.00966.x 1064:10.1046/j.1439-0426.2002.00310.x 671:) in the northwestern North Sea" 53: 1261:"Recruitment of lesser sandeel 2253:Taxa named by Douglas S. Raitt 1937:ICES Journal of Marine Science 1900:ICES Journal of Marine Science 1747:ICES Journal of Marine Science 1609:ICES Journal of Marine Science 1270:Marine Ecology Progress Series 1094:Marine Ecology Progress Series 1051:Journal of Applied Ichthyology 883:ICES Journal of Marine Science 819:ICES Journal of Marine Science 809:Kubilius, R., Ona, E. (2012). 1: 1950:10.1016/j.icesjms.2006.05.009 1345:10.1016/S1385-1101(00)00050-2 1227:10.1016/S0165-7836(99)00026-0 1006:10.1016/S0165-7836(98)00081-2 698:10.1016/j.jmarsys.2011.08.010 575:flying with sand eel in beak 988:Gymnammodytes semisquamatus 2274: 2238:Fish of the Atlantic Ocean 1561:Journal of Applied Ecology 1524:10.1016/j.ecss.2015.05.022 380:The Raitt's sand eel is a 356:fluctuation can alter the 350:North Atlantic Oscillation 326:Biological indicators, or 1868:10.1017/s0025315400004070 1169:10.1007/s00227-011-1774-8 953:10.1007/s10228-012-0304-0 678:Journal of Marine Systems 155: 148: 50:Scientific classification 48: 39: 34: 635:; Pauly, Daniel (eds.). 258:Distribution and habitat 189:fish found in the North 1827:Journal of Fish Biology 1325:Journal of Sea Research 941:Ichthyological Research 649:. January 2016 version. 609:of Threatened Species. 201:, often referred to as 2258:Fish described in 1934 2243:Fish of the Baltic Sea 1913:10.1006/jmsc.2001.1155 1894:Furness, R.W. (2002). 1760:10.1006/jmsc.2000.0714 1622:10.1006/jmsc.1997.0245 1047:) in Norwegian waters" 896:10.1093/icesjms/fsp091 832:10.1093/icesjms/fss093 576: 557:black-legged kittiwake 539:Environmental concerns 501: 399:black-legged kittiwake 332:black-legged kittiwake 323: 320:black-legged kittiwake 2248:Fish of the North Sea 570: 495: 344:, climate change and 317: 1382:Ammodytes hexapterus 322:flying above the sea 1671:2000Natur.405.1017N 1665:(6790): 1017–1024. 1516:2015ECSS..165..237L 1337:2000JSR....44..243W 1283:2009MEPS..381..249V 1107:2002MEPS..238..199A 690:2012JMS....93...47H 601:Conservation status 182:), is a small semi- 1498:Ammodytes tobianus 1400:10.1007/bf00394728 1214:Fisheries Research 1116:10.3354/meps238199 993:Fisheries Research 753:10.7755/fb.113.2.3 577: 502: 324: 2220: 2219: 2192:Open Tree of Life 2002:Ammodytes marinus 1994:Taxon identifiers 1931:Ammodytes marinus 1823:Ammodytes marinus 1292:10.3354/meps07960 1263:Ammodytes marinus 1209:Ammodytes marinus 1163:(12): 2755–2764. 1151:Ammodytes marinus 976:Ammodytes marinus 813:Ammodytes marinus 669:Ammodytes marinus 639:Ammodytes marinus 180:Ammodytes marinus 173: 172: 159:Ammodytes marinus 35:Raitt's sand eel 18:Ammodytes marinus 16:(Redirected from 2265: 2213: 2212: 2200: 2199: 2187: 2186: 2174: 2173: 2161: 2160: 2148: 2147: 2145:NBNSYS0000173710 2135: 2134: 2122: 2121: 2109: 2108: 2096: 2095: 2083: 2082: 2070: 2069: 2057: 2056: 2044: 2043: 2031: 2030: 2021: 2020: 2019: 1989: 1983: 1982: 1981:. 22 March 2016. 1975: 1969: 1968: 1962: 1954: 1952: 1943:(8): 1530–1550. 1924: 1918: 1917: 1915: 1891: 1880: 1879: 1849: 1843: 1842: 1818: 1812: 1811: 1809: 1785: 1779: 1778: 1772: 1764: 1762: 1738: 1723: 1722: 1716: 1708: 1690: 1679:10.1038/35016500 1652: 1641: 1640: 1634: 1626: 1624: 1600: 1594: 1593: 1587: 1579: 1577: 1568:(6): 1129–1139. 1551: 1542: 1541: 1535: 1527: 1493: 1487: 1486: 1480: 1472: 1446: 1437: 1426: 1425: 1419: 1411: 1377: 1371: 1370: 1364: 1356: 1331:(3–4): 243–256. 1320: 1311: 1310: 1304: 1296: 1294: 1256: 1245: 1244: 1238: 1230: 1204: 1195: 1194: 1188: 1180: 1146: 1135: 1134: 1128: 1120: 1118: 1084: 1069: 1068: 1066: 1030: 1024: 1023: 1017: 1009: 971: 965: 964: 936: 930: 929: 928:. 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Index

Ammodytes marinus

Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Actinopterygii
Trachiniformes
Ammodytidae
Ammodytes
Binomial name
Raitt
pelagic
ray-finned
Atlantic Ocean
Ammodytidae
sand eels
sand lances
eels
Trachiniformes
dorsal
Ammodytes
Perciformes
phylogeny
Trachinoidei
North Sea
climate change
sea bed
bedrock

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