Ολοκέφαλοι (χίμαιρες) (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); matallanasi: In honor of Jesús Matallanas Garcia, University of Barcelona (Spain), for his “extensive work and tireless dedication to ichthyology” (See ETYFish).
Eponymy: Jesús Matallanas Garcia is a Spanish ichthyologist and Professor in the Faculty of Biosciences at the University of Barcelona. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά) βαθύβιο(ς); εύρος βάθους 416 - 736 m (Ref. 52554). Subtropical; 23°S - 31°S (Ref. 52554)
Southwestern Atlantic: Brazil.
Length at first maturity / Μέγεθος / Βάρος / Age
Maturity: Lm ?, range 30 - ? cm
Max length : 69.5 cm TL αρσενικό/απροσδιόριστο; (Ref. 52554); 37.8 cm OT (female)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Diagnosis: Differs from its congeners in having an irregular brown coloration with reticulations and spots over the body; ventral surface whitish, including pectoral bases; proximal margin of the second dorsal fin whitish; tooth plates striped and bicolor, yellowish and gray; length of dorsal fin spine equal to or slightly greater than head length; pectoral fin notably long, its tip extending beyond posterior margin of pectoral fin base; upper margin of second dorsal fin notably concave at middle region of second dorsal fin base; minimum height of second dorsal fin less than half of maximum height (located at points anterior and posterior to middle region of fin); eye length slightly smaller than preorbital length (Ref. 52554).
Female maximum length given as precaudal length (PCL). Inhabits deep-reefs on the continental slope, usually deeper than 400 meters; with gorgonians, hard corals, tube sponges, crinoids, and ophiuroids. It also shares this habitat with other sharks Heptranchias perlo, Scyliorhinus haeckelii, Galeus mincaronei, Schroederichthys saurisqualus, Squalus sp., and the skate Gurgesiella dorsalifera (Ref. 52554).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Soto, J.M.R. and C.M. Vooren, 2004. Hydrolagus matallanasi sp. nov. (Holocephali, Chimaeridae) a new species of rabbitfish from southern Brazil. Zootaxa 687:1-10. (Ref. 52554)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
αλιεία: χωρίς ενδιαφέρον
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Preferred temperature (Ref.
123201): 6.4 - 10.2, mean 8.2 °C (based on 7 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00137 - 0.00798), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (48 of 100).
