Holocéphales (chimères) (chimaeras) >
Chimaeriformes (Chimaeras) >
Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors (See ETYFish); lusitanicus: -icus (L.), belonging to: Lusitania, ancient name of Portugal, where it was initially identified (See ETYFish).
Taxonomic Remarks
Questionably a new species (Didier pers. obs. in Barnett et al., 2006: Ref. 57880).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin bathydémersal; profondeur ? - 1600 m (Ref. 55857). Deep-water; 41°N - 36°N, 10°W - 8°W (Ref. 55857)
Northeast Atlantic: Portugal.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 95.4 cm OT mâle / non sexé; (Ref. 55857); 117.7 cm OT (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Second dorsal fin margin straight; eyes smaller than one third of the head length. Supracaudal fin less deep or equal to subcaudal fin; eye diameter always <5 times in head length. Pectoral fin length from 1-9 to 2-3 times of pectoral fin width.
Body shape (shape guide): elongated.
Maximal length type is pre supra caudal fin length.
Nothing is known on the biology of the species.
Body uniform rose to light brown with few small irregular light and dark spots; point of snout and region between the eye and the pectoral fin whitish; fins violet blue.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Moura, T., I. Figueiredo, P. Bordolo-Machado, C. Almeida and L.S. Gordo, 2005. A new deep-water chimaerid species, Hydrolagus lusitanicus n. sp., from off mainland Portugal with a proposal of a new identification key for the genus Hydrolagus (Holocephali: Chimaeridae) in the north-east Atlantic. J. Fish Biol. 67(3):742-751. (Ref. 55857)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Utilisations par l'homme
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00331 (0.00137 - 0.00798), b=3.07 (2.87 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.9 ±0.6 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (Deepwater species with few large eggs.). |
Vulnérabilité de la pêche (Ref. 59153) |
High vulnerability (58 of 100). 🛈 |