Overview

Brief Summary

Introduction

These moderate-sized squids reach a maximum size of 250 mm (Nesis, 1982). They are cosmopolitan in tropical and subtropical waters although Young (1995) suggested that L. reinhardti was a mesopelagic boundary species (i.e., that it is associated with land masses). In Hawaiian waters L. reinhardti is a vertical migrator while L. valdiviae is a deep-living non-migrator (Young, 1978).

Brief diagnosis:

A cranchiin ...

  • with two rows of diverging cartilagenous tubercules originating at each funnel-mantle fusion.

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Comprehensive Description

Characteristics

Figure. Young Liocranchia sp., off Hawaii, showing sessile eyes. Photograph by R.E. Young.

  1. Tentacles
    1. Suckers and pads in two series on distal 2/3 of tentacle stalk.

  2. Head
    1. Eyes sessile in paralarvae.

  3. Funnel
    1. Funnel valve present.
    2. Funnel organ with very large ventral pads.

  4. Mantle
    1. Two pairs of diverging tuberculate cartilaginous strips on mantle; originate at each funnel-mantle fusion (see Title picture).

  5. Fins
    1. Fins unite posterior to gladius (nearly circular in combined outline) (see Title picture).

  6. Photophores
    1. Number of oval photophores on each eye varies with species (4 or 14).
    2. Photophores on tips of arms III in mature or nearly mature females.

Comments

Characteristics are from Voss (1980).

Comparison of species

Cartilagenous tubercules present along middorsal line of mantle. Number of photophores on eyeball.
L. reinhardti Yes 14
L. valdiviae No 4

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Ecology

Habitat

Depth range based on 128 specimens in 3 taxa.
Water temperature and chemistry ranges based on 85 samples.

Environmental ranges
  Depth range (m): 19 - 3070
  Temperature range (°C): 2.685 - 27.746
  Nitrate (umol/L): 0.040 - 43.627
  Salinity (PPS): 34.193 - 36.564
  Oxygen (ml/l): 0.375 - 5.958
  Phosphate (umol/l): 0.043 - 3.384
  Silicate (umol/l): 1.049 - 104.610

Graphical representation

Depth range (m): 19 - 3070

Temperature range (°C): 2.685 - 27.746

Nitrate (umol/L): 0.040 - 43.627

Salinity (PPS): 34.193 - 36.564

Oxygen (ml/l): 0.375 - 5.958

Phosphate (umol/l): 0.043 - 3.384

Silicate (umol/l): 1.049 - 104.610
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 3
Specimens with Sequences: 3
Specimens with Barcodes: 3
Species: 2
Species With Barcodes: 2
Public Records: 1
Public Species: 1
Public BINs: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Liocranchia

Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

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