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Scombriformes (Mackerels) >
Gempylidae (Snake mackerels)
Etymology: Thyrsitops: Greek, thyrsites, -ou = stalk of a plant, an ornament like a pine cone borne by Bacchus + Greek, ops = appearance (Ref. 45335).
More on author: Cuvier.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina bentopelagisk; djupintervall 30 - 350 m (Ref. 36453). Subtropical; 15°S - 43°S, 77°W - 40°W (Ref. 6181)
Southwest Atlantic: off Rio de Janeiro (Ref. 47377), southern Brazil, Uruguay and Argentina. Southeast Pacific: off Chile.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm ?, range 25 - ? cm
Max length : 40.0 cm SL hane/ej könsbestämd; (Ref. 6181); common length : 25.0 cm SL hane/ej könsbestämd; (Ref. 6181)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 17 - 18; Mjukstrålar i ryggfenan (totalt) : 13 - 15; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 15 - 17; Ryggkotor: 33. Lateral line single, slightly curving anteriorly, then fairly straight and oblique. Body is dark blue with metallic tint (Ref. 6181).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Mesobenthopelagic (Ref. 47377). Inhabits the continental slope (Ref. 6181). Feeds on small fishes (Ref. 6181) and euphausiids (Ref. 47377). Since 1980, no catches have been reported, except for 21 t caught in 1990 by Argentina (Ref. 6181). Good for smoked fish and fish and chips (Ref. 6181).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Nakamura, I. and N.V. Parin, 1993. FAO Species Catalogue. Vol. 15. Snake mackerels and cutlassfishes of the world (families Gempylidae and Trichiuridae). An annotated and illustrated catalogue of the snake mackerels, snoeks, escolars, gemfishes, sackfishes, domine, oilfish, cutlassfishes,. scabbardfishes, hairtails, and frostfishes known to date. FAO Fish. Synop. 125(15):136 p. (Ref. 6181)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: mindre kommeriell
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 7.5 - 19.8, mean 15 °C (based on 72 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00394 - 0.01273), b=2.95 (2.79 - 3.11), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.9 ±0.63 se; based on food items.
Generation time: 3.1 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (K=0.35; Assuming tm=2-4).
Sårbarhet i fisket (Ref.
59153): Low to moderate vulnerability (34 of 100).
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Sårbarhet för klimatet (Ref.
125649): Moderate vulnerability (44 of 100).
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Näringsämnen (Ref.
124155): Calcium = 56.1 [28.8, 110.9] mg/100g; Iron = 0.937 [0.484, 1.779] mg/100g; Protein = 17.8 [15.7, 19.7] %; Omega3 = 0.418 [0.265, 0.639] g/100g; Selenium = 35.2 [19.6, 65.3] μg/100g; VitaminA = 29 [12, 80] μg/100g; Zinc = 0.69 [0.52, 0.94] mg/100g (wet weight);