Squaliolus laticaudus, Spined pygmy shark

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Squaliolus laticaudus Smith & Radcliffe, 1912

Spined pygmy shark
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Native range | All suitable habitat | Point map | Year 2100
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Squaliolus laticaudus   AquaMaps   Data sources: GBIF OBIS
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Image of Squaliolus laticaudus (Spined pygmy shark)
Squaliolus laticaudus
Picture by Fischer, L.G.

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranquios (tiburones y rayas) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Dalatiidae (Sleeper sharks)
Etymology: Squaliolus: Latin, squalidus = pale, weak (Ref. 45335).  More on authors: Smith & Radcliffe.

Environment: milieu / climate zone / depth range / distribution range Ecología

; marino batipelgico; oceanodromo (Ref. 51243); rango de profundidad 200 - 1200 m (Ref. 27000), usually - m (Ref. ).   Deep-water; 0°C - ; 48°N - 40°S, 180°W - 180°E

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Nearly circumtropical. Western Atlantic: off Bermuda, southern Brazil, and northern Argentina. Eastern Atlantic: off France and Madeira. Western Indian Ocean: off Somalia. Western Pacific: Japan, Taiwan and Philippines (Ref. 13748), as well as Australia (Ref. 7300).

Length at first maturity / Tamaño / Peso / Age

Maturity: Lm ?, range 17 - 20 cm
Max length : 22.0 cm TL macho / no sexado; (Ref. 247); 25.0 cm TL (female)

Short description Morfología | Morfometría

Espinas dorsales (total): 1; Radios blandos dorsales (total): 0; Espinas anales 0; Radios blandos anales: 0. The spined pygmy shark Squaliolus laticaudus is a very small dogfish (about 25cm) with a large eye (diameter 73-86% of interorbital width), upper margin nearly straight; upper lip without papillae (Ref. 31367, 6871). Color: dark with conspicuously light-margined fins (Ref. 247) . Edge of fins with bright border (Ref. 43998). S. laticaudus is the type species of the genus which has the following distinctive features: fin spine on its first dorsal fin but not on its second dorsal fin; second dorsal fin long-based and low, about twice the length of first dorsal fin base; first dorsal-fin base closer to pectoral fins than to pelvic fins; and caudal fin nearly symmetrical, paddle-shaped, with subterminal notch present; low lateral keels on caudal peduncle . Body cigar-shaped; snout very long, bulbously conical but slightly pointed; mouth ventral; lips thin; teeth strongly different in both jaws, uppers small, narrow and erect cusps, lowers larger, blade-like and semi erect. Tooth rows 22-23/16-21. (Ref. 247, 6871).

Biología     Glosario (por ej. epibenthic)

An oceanic, wide-ranging, tropical pelagic species occurring near continental and insular land masses, sometimes over the shelves, but usually over the slopes (Ref. 247). Displays vertical migrations on a diel cycle, seen at the bottom during the day and travels to 200 m at night (Ref. 247). Feeds on deepwater squid, lanternfish, gonostomatids and idiacanthids, and probably follows its prey on their diel migrations (Ref. 247). Ovoviviparous (Ref. 205). Has well-developed photophores densely covering the ventral part of the body and sparsely seen on the sides and hardly developed on the dorsal surface (Ref. 247).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Probably ovoviviparous. Twelve mature eggs have been found in a single ovary of a mature female but this does not imply that large litters are produced (Ref. 247). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | Referencias | Coordinador : Compagno, Leonard J.V. | Colaboradores

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCN Red List Status (Ref. 124695)

  Least Concern (LC) ; Date assessed: 21 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesquerías: sin inters
FAO - Publication: search | FishSource |

Más información

Nombres comunes
Sinónimos
Metabolismo
Despredadores
Ecotoxicología
Reproducción
Madurez
Puesta
Agregación para la puesta
Fecundidad
Huevos
Egg development
Age/Size
Crecimiento
Length-weight
Length-length
Length-frequencies
Morfometría
Morfología
Larva
Dinámica larvaria
Reclutamiento
Abundancia
BRUVS
Referencias
Acuicultura
Perfil de acuicultura
Razas
Genética
Frecuencias de alelos
heritabilidad
Enfermedades
Procesamiento
Nutrients
Mass conversion
Colaboradores
Imágenes
Stamps, Coins Misc.
Sonidos
Ciguatera
Velocidad
Tipo de natación
Superficie branquial
Otolitos
Cerebros
Visión

Herramientas

Special reports

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Fuentes de Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Género, Especie | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Bases de datos nacionales | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Árbol de la vida | Wikipedia: Go, búsqueda | World Records Freshwater Fishing | Zoobank | Expediente Zoológico

Estimates based on models

Preferred temperature (Ref. 115969): 7.1 - 14.6, mean 10 °C (based on 649 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7520   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00141 - 0.00976), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nivel trófico (Ref. 69278):  4.2   ±0.73 se; based on food items.
Resiliencia (Ref. 120179):  Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec assumed to be <10).
Vulnerability (Ref. 59153):  Low vulnerability (13 of 100) .
Nutrients (Ref. 124155):  Calcium = 16.5 [2.8, 62.5] mg/100g ; Iron = 0.36 [0.09, 1.01] mg/100g ; Protein = 18.4 [16.5, 20.2] % ; Omega3 = 0.45 [0.16, 1.36] g/100g ; Selenium = 6.34 [1.55, 21.17] μg/100g ; VitaminA = 96.9 [20.1, 471.1] μg/100g ; Zinc = 0.497 [0.230, 1.302] mg/100g (wet weight);