Môi trường / Khí hậu / Phạm vi
Sinh thái học
; Biển; Ở đại duơng, biển (Ref. 51243); Mức độ sâu 0 - 200 m (Ref. 43). Subtropical; 22°C - 31°C (Ref. 43), preferred 27°C (Ref. 107945); 50°N - 45°S, 98°W - 17°E (Ref. 43)
Atlantic Ocean: in tropical and temperate waters. We follow Nakamura 1985 (Ref. 43) in recognizing Makaira mazara and Makaira nigricans as two distinct species chiefly because of differences in the pattern of the lateral line system. Many scientists, however, do not recognize this character as specifically diagnostic and consider the latter species as a single pantropical species occurring in the Atlantic, Pacific and Indian oceans. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?, range 50 - ? cm
Max length : 500 cm TL con đực/không giới tính; (Ref. 11441); 500.0 cm TL (female); common length : 290 cm TL con đực/không giới tính; (Ref. 6659); Khối lượng cực đại được công bố: 636.0 kg (Ref. 40637); Khối lượng cực đại được công bố: 636.0 kg
Các tia vây lưng cứng (tổng cộng): 0; Các vây lưng mềm (tổng cộng): 45-50; Tia cứng vây hậu môn 0; Tia mềm vây hậu môn: 19 - 23. Body blue-black above and silvery white below, with about 15 rows of pale cobalt-colored stripes; 1st dorsal fin plain blackish or dark blue, other fins brown black with a tinge of dark blue in some specimens; anal fin bases with a tinge of silvery white. Lateral line a network of interconnecting canals (Ref. 26938).
Oceanic species. Water color affects its occurrence, at least in the northern Gulf of Mexico, where the fish show preference for blue water. Rarely gathers in schools and usually found as scattered single individuals. Feeds mainly on fishes but also preys on octopods and squids. Marketed fresh or frozen (Ref. 43). Feeding takes place during daytime. Maturity reached at about 80 cm in males and 50 cm in females (Ref. 36731). Females grow larger (Ref. 4770).
Subripe ova are opaque, white to yellow, and 0.3 to 0.5 mm in diameter. Transparent spherical eggs flowing out of a ripe ovary measured 1 mm in diameter.
Nakamura, I., 1985. FAO species catalogue. Vol. 5. Billfishes of the world. An annotated and illustrated catalogue of marlins, sailfishes, spearfishes and swordfishes known to date. FAO Fish. Synop. 125(5):65p. Rome: FAO. (Ref. 43)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
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Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7505 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00254 - 0.00717), b=3.11 (2.96 - 3.26), based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Mức dinh dưỡng (Ref. 69278
): 4.5 ±0.3 se; Based on diet studies.
Thích nghi nhanh (Ref. 69278
): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (K=0.1-0.3).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (52 of 100) .