Overview

Comprehensive Description

Biology

High-oceanic, found between 375-1,000 m during the day and between 45-150 m at night. Spawns from winter to spring.
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Distribution

Range Description

Notoscopelus elongatus is endemic to the Mediterranean Sea. It occurs in the west Mediterranean Sea (Fischer et al. 1987), Adriatic Sea (Bombace and Froglia 1973), Catalonian coasts (Sabats and Mas1990, 1992), Balearic Islands and Algerian basin (Moranta et al. 1998), Aegean Sea (Tuncer et al. 2009), Marmara Sea (Bilecenoglu et al. 2002) and Greek seas (Papaconstantinou 1990).
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between 56°N to 40.65°N
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Mediterranean Sea: endemic to the western region.
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Mediterranean Sea endemic.
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Physical Description

Size

Maximum size: 106 mm ---
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Max. size

10.6 cm SL (male/unsexed; (Ref. 3397))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This is an oceanic and mesopelagic species that reaches a maximum length of 106 mm standard length (SL) (Bauchot 1987). It occurs between 375 and 1,000 m during daytime and between 45 and 150 m at night (Fischer et al. 1987).Spawning occurs from winter to spring with maximum spawning intensity occurring in April (Sabats and Mas1990). It is considered to be an important prey item of the pandalid shrimpsPlesionika gigliolii and Plesionika edwardsii in the western Mediterranean (Fanelli and Cartes 2004). This species itself feeds mainly on krill and copepods, and more rarely polychaetes and crustaceans of the genus Parathemisto(Podrazhanskaya 1993).

Systems
  • Marine
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Depth range based on 36 specimens in 3 taxa.
Water temperature and chemistry ranges based on 31 samples.

Environmental ranges
  Depth range (m): 46 - 3050
  Temperature range (°C): 2.826 - 15.407
  Nitrate (umol/L): 2.838 - 21.032
  Salinity (PPS): 34.948 - 38.495
  Oxygen (ml/l): 4.191 - 6.525
  Phosphate (umol/l): 0.205 - 1.405
  Silicate (umol/l): 1.642 - 32.983

Graphical representation

Depth range (m): 46 - 3050

Temperature range (°C): 2.826 - 15.407

Nitrate (umol/L): 2.838 - 21.032

Salinity (PPS): 34.948 - 38.495

Oxygen (ml/l): 4.191 - 6.525

Phosphate (umol/l): 0.205 - 1.405

Silicate (umol/l): 1.642 - 32.983
 
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nektonic
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High-oceanic, found between 375-1,000 m during the day and between 45-150 m at night
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Environment

pelagic-oceanic; oceanodromous (Ref. 51243); marine; depth range 45 - 1000 m
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Depth range based on 36 specimens in 3 taxa.
Water temperature and chemistry ranges based on 31 samples.

Environmental ranges
  Depth range (m): 46 - 3050
  Temperature range (°C): 2.826 - 15.407
  Nitrate (umol/L): 2.838 - 21.032
  Salinity (PPS): 34.948 - 38.495
  Oxygen (ml/l): 4.191 - 6.525
  Phosphate (umol/l): 0.205 - 1.405
  Silicate (umol/l): 1.642 - 32.983

Graphical representation

Depth range (m): 46 - 3050

Temperature range (°C): 2.826 - 15.407

Nitrate (umol/L): 2.838 - 21.032

Salinity (PPS): 34.948 - 38.495

Oxygen (ml/l): 4.191 - 6.525

Phosphate (umol/l): 0.205 - 1.405

Silicate (umol/l): 1.642 - 32.983
 
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Depth: 45 - 1000m.
From 45 to 1000 meters.

Habitat: pelagic.
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Migration

Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.
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Trophic Strategy

Normally occurs at depths of about 150-200 m (Ref. 26335).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Notoscopelus elongatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 12
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2014

Assessor/s
Smith-Vaniz, W.F., Carpenter, K.E., de Morais, L., Knudsen, S. & Harold, A.

Reviewer/s
Strongin, K.

Contributor/s

Justification
Notoscopelus elongatus is endemic to the Mediterranean Sea. It is widespread and common in at least parts of its range. It is not utilized and there are no known widespread threats. Therefore, N. elongatus is assessed as Least Concern.

History
  • 2013
    Least Concern (LC)
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Population

Population
This species is fairly common in the western Mediterranean Sea, although scarce in the eastern region. On Catalonian coasts, Sabatsand Mas (1990) captured 6,330 juvenile individuals of this species per square meter in 18 tows of an ichthyoplankton survey during the peak spawning month (April). In a similar survey, the frequency of occurrence of the species among ichthyoplankton was one percent (Sabats and Mas1992).

Population Trend
Stable
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Threats

Major Threats
This species is not commercially exploited. There are no known major threats.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
No specific conservation measures are in place for this species. However, this species may be found in marine protected areas within its range (World Database on Protected Areas 2010). Notoscopelus elongatus was assessed as Least Concern in 2007, globally and in the Mediterranean (Abdul Malak et al. 2011, IUCN 2011).
Further research into the biology and ecology of this species is suggested.
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