Mammalia |
Cetartiodactyla |
Delphinidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
Πελαγικό(ά); ωκεανόδρομο(ς) (Αναφ. 75906); εύρος βάθους 0 - 2652 m (Αναφ. 116169). Tropical; 90°N - 90°S, 180°W - 180°E
Circumglobal. Climate: cosmopolitan.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ?, range 570 - 660 cm Max length : 980 cm TL αρσενικό/απροσδιόριστο; (Αναφ. 1394); 850 cm TL (female); μεγ. δημοσιευμένο βάρος: 10.0 t (Αναφ. 1394)
Transient migration (Ref. 8689). Lives in matrilines throughout their lifetime (Ref. 97337). Commonly found in nearshore, cold temperate to subpolar waters (Refs. 1394, 936). Forms large social groups and strong social bonds. Feeds cooperatively (Refs. 122680, 130961). Feeds on sharks, large baleen whales (Ref. 122680), all oceanic cetaceans, pinniped, penguins, and other seabirds, leatherback turtles, squid and many types of fish (Refs. 1394, 936). Three ecotypes identified along California and Oregon: residents (piscivorous), transients (mammal-eating) and offshores (preference for shark and other large fishes). Bite marks indicate attacks from Isistius sp. (Ref. 130791).
Polygamous (Ref. 8653). Sexually dimorphic; males are larger than females (Ref. 97315). Females have higher preference for non-pod males that arrive as part of a matriline than males that arrive alone. Multiple mating occurs based on testis size to body size ratios; females mate with more than one male during associations between pods (Ref. 97337). Calving is diffusely seasonal, with a peak in autumn for northeastern Pacific species (Ref. 97343).
Tan, J.M.L. 1995 A Field Guide to the Whales and Dolphins in the Philippines. Makati City: Bookmark. 125 p. (Αναφ. 936)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Threat to humans
Human uses
αλιεία: Εμπορικό(ά)
FAO - αλιεία: landings, species profile | FishSource | Η θάλασσα γύρω μας
Εργαλεία
Περισσότερες πληροφορίες
PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 0.3 - 13.1, mean 3.1 (based on 13394 cells).
Ελαστικότητα
Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (K=0.1-0.17; tm=9.4).
Fishing Vulnerability
Very high vulnerability (81 of 100).
Price category
Unknown.