Ελασμοβράγχιοι (καρχαρίες και σαλάχια) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Notoraja: Greek, noton = back + Latin, raja = fish, Raja sp. (Ref. 45335); sereti: Named after the highly respected French ichthyologist, Dr. Bernard Séret.
Eponymy: Dr Bernard Séret (d: 1949) is an ichthyologist and marine biologist who is a senior scientist at IRD (Institut de Recherche pour le Développement) and is currently hosted by the Department of Systematics and Evolution, Muséum National d’Histoire [...] (Ref. 128868), visit book page.
Περιβάλλον: περιβάλλον / κλιματική ζώνη / εύρος βάθους / εύρος διανομής
Οικολογία
Θαλασσινό(ά) βαθύβιο(ς); εύρος βάθους 800 - 980 m (Ref. 116308). Tropical
Western Central Pacific: Papua New Guinea.
Μέγεθος / Βάρος / Ηλικία
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm
Max length : 45.9 cm TL (female)
Σύντομη περιγραφή
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
This medium-size species is distinguished by the following set of characters: disc wider than long, width 47.1-50.3% TL, length 42.0-43.6% TL; head short (dorsal head length 15.2-16.2% TL; ventral head length 21.6-22.9% TL); snout relatively short (preorbital length 10.1-11.1% TL; ventral snout length 11.2-12.1% TL); interspiracular distance 5.3-5.9 TL, internasal distance 6.2-6.8% TL, preorbital length 2.4-3.0 times orbit length and 2.9-3.6 times interorbital; dorsal fins two, interdorsal space 1.1-1.9% TL; tail width at pelvic-fin axil 0.9-1.6 times its height; preorbital thorn single and small ; dorsal and most of ventral surface of disc entirely velvety, covered with fine denticles; adolescent male with median disc and pelvic fins naked; in females, anterior pelvic-fin lobe naked (skin naked or with sparse denticles ventrally on mid belly, chin, nasal curtain, and around cloaca); tail is long and slender, entirely velvety and without thorn-like denticles; lateral tail folds are moderately well developed; nasal lobes expanded, width of nasal curtain 7.9-8.3% TL; anterior pelvic-fin lobe is slightly shorter or similar length to posterior lobe; dorsal and ventral surfaces are greyish brown to dark bluish grey; total pectoral-fin radials 58-60; monospondylous centra 23-25, total diplospondylous centra 103-106, total centra 126-131 (Ref. 116308).
Body shape (shape guide): other; Cross section: flattened.
The species is known from three type specimens consisting of two females (45.9 and 45.8 cm TL) and an adolescent male (36.3 cm TL); based on the adolescent male size, the females are most likely adults (Ref. 116308).
Κύκλος ζωής και συμπεριφορά ζευγαρώματος
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
White, W.T., P.R. Last and R.R. Mana, 2017. A new species of velvet skate, Notoraja sereti n.sp. (Rajiformes: Arhynchobatidae) from Papua New Guinea. Zootaxa 4244(2):219-230. (Ref. 116308)
Κατάσταση Κόκκινου Καταλόγου IUCN (Ref. 130435: Version 2025-2 (Global))
Απειλή για τον άνθρωπο
Harmless
Ανθρώπινες χρήσεις
αλιεία: χωρίς ενδιαφέρον
Εργαλεία
Ειδικές εκθέσεις
Λήψη XML
Διαδικτυακές πηγές
Εκτιμήσεις βάσει μοντέλων
Δείκτης φυλογενετικής ποικιλότητας (Αναφ. 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=0.00562 (0.00287 - 0.01102), b=3.11 (2.94 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Τροφικό Επίπεδο (Αναφ. 69278) |
3.8 ±0.7 se; based on size and trophs of closest relatives |
Ελαστικότητα (Αναφ. 120179) |
Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Preliminary K or Fecundity.). |
Ευπάθεια στην αλιεία (Ref. 59153) |
Moderate to high vulnerability (48 of 100). 🛈 |