France country information

Common names: Spined pygmy shark, Squale nain
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Arcachon Bay, the northernmost record in the Atlantic ocean (Ref. 43998).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/fr.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Squale nain, Tollo pigmeo espinudo, قِرش قزم دائري, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Dalatiidae (Sleeper sharks)
Etymology: Squaliolus: Diminutive of squalus (L.), a sea-fish, usually applied to sharks, referring to small size of S. laticaudus. (See ETYFish); laticaudus: latus (L.), wide or broad; cauda (L.), tail, referring to its broad (but short) caudal fin. (See ETYFish).
More on authors: Smith & Radcliffe.

Environment: milieu / climate zone / depth range / distribution range 生態学

海深海浮遊性; 海洋回遊性 (Ref. 51243); 深さの範囲 200 - 1200 m (Ref. 27000). Deep-water; 48°N - 40°S, 180°W - 180°E

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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 / サイズ / 重さ / 年齢

Maturity: L_m 18.5, range 17 - 20 cm
Max length : 22.0 cm TL オス/雌雄の選別がない; (Ref. 247); 25.0 cm TL (female)

簡単な記述検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 1; 肛門の骨: 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).

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 Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

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).

主な参考文献 Upload your references | 参考文献 | コーディネーター : Compagno, Leonard J.V. | 協力者

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のレッドリストの状況は (Ref. 130435)

軽度懸念 (LC) ; Date assessed: 21 November 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

Harmless

Human uses

水産業: 興味がない

FAO(Publication : search) | FishSource |

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インターネットの情報源

Estimates based on models

Preferred temperature (Ref. 115969): 7.1 - 14.6, mean 10 (based on 649 cells).

Phylogenetic diversity index (Ref. 82804): 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).

栄養段階 (Ref. 69278): 4.2 ±0.73 se; based on food items.

回復力 (Ref. 120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Fec assumed to be <10).

Fishing Vulnerability (Ref. 59153): Low vulnerability (15 of 100).

Squaliolus laticaudus Smith & Radcliffe, 1912

Common names from other countries

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

Environment: milieu / climate zone / depth range / distribution range 生態学

分布国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Length at first maturity / サイズ / 重さ / 年齢

簡単な記述検索表 | 形態学 | 形態計測学

生物学用語集 (例 epibenthic)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター : Compagno, Leonard J.V. | 協力者

IUCNのレッドリストの状況は (Ref. 130435)

CITES (Ref. 128078)

CMS (Ref. 116361)

人間に対する脅威

Human uses

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Squaliolus laticaudus Smith & Radcliffe, 1912

Common names from other countries

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

Environment: milieu / climate zone / depth range / distribution range 生態学

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Length at first maturity / サイズ / 重さ / 年齢

簡単な記述 検索表 | 形態学 | 形態計測学

生物学 用語集 (例 epibenthic)

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター : Compagno, Leonard J.V. | 協力者

IUCNのレッドリストの状況は (Ref. 130435)

CITES (Ref. 128078)

CMS (Ref. 116361)

人間に対する脅威

Human uses

より多くの情報

用具

特記事項

XMLをダウンロードして下さい

インターネットの情報源

Estimates based on models

分布国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

簡単な記述検索表 | 形態学 | 形態計測学

生物学用語集 (例 epibenthic)