分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays)
(Skates and rays) > Rajidae
Etymology: cairae: Named for the Connecticut-based parasitologist, Dr Janine Caira. More on authors: Last, Fahmi & Ishihara.
Environment: milieu / climate zone / depth range / distribution range
; 海 底生の漂泳性. Tropical
Western Pacific: off western Borneo, South China Sea.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 34 - 35.5 cm
Max length : 36.0 cm TL オス/雌雄の選別がない; (Ref. 84285); 39.0 cm TL (female)
形態学 | 形態計測学
This species is distinguished by the following set of characters: disc with narrowly rounded apices, not broad, width 61-70% TL, 1.2-1.3 times its length; snout angle 84-106°; moderately long tail, length 0.9-1.1 in distance from snout tip to rear of cloaca; slender tail, width 1.2-1.7 times height at its midlength, 1.1-1.7 times at first dorsal-fin origin; pre-upper jaw length 14-16% TL, 1.8-2.1 times internasal width; ventral length 27-30% TL; snout length 2.8-3.6 times interorbital width; orbit diameter 93-103% interorbital width in large males, 69-89% in females; first dorsal-fin height 2.3-3.0 its base length; distance from first dorsal-fin origin to tail tip 4.1-5.4 times first dorsal-fin base length, 2.9-3.2 times caudal-fin length; medium sized pelvic fins, length of posterior lobe 15-17% TL, length of anterior lobe 78-92% of posterior lobe; adult clasper about 22% TL, connected to pelvic-fin inner margin at about 40% of its length from cloaca in adult male; clasper glans expanded slightly, soft, claw-like funnel; anterior margins of both surfaces of disc of males with denticle bands, no dorsal bands in females and juveniles; 1-3 nuchal thorns present; malar thorn patch elongate and posteriorly positioned; tail thorns very small (rudimentary and possibly deciduous in mature males), in 5 irregular rows in both sexes and juveniles; total pectoral radials 78-84; centra: trunk 24-31, predorsal 68-75, total 123-141; 40-51 tooth rows in upper jaw; mainly yellowish to brownish with variable size clusters of fine brownish spots (sometimes faint) over most of dorsal disc; rostral cartilage not strongly demarcated from rest of snout; prominent, dark brown ocellate markings near rear tip, and often near center of each pectoral fin; ventral surface usually pale to medium greyish brown over head and abdomen, distinctly darker than paler area around margin of disc; ventral sensory pores large, silvery white with dark margins when fresh, uniformly black in preservative, not surrounded by greyish blotches, none on abdomen and pelvic girdle; each dorsal fin with a dark anterior saddle, caudal fin with 2 dark bars (Ref. 84285).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Last, P.R., Fahmi and H. Ishihara, 2010. Okamejei cairae sp. nov. (Rajoidei: Rajidae), a new skate from the South China Sea. pp. 89-100. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of new sharks and rays from Borneo. CSIRO Marine and Atmospheric Research Paper no. 32. (Ref. 84285)
CITES (Ref. 123416)
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00144 - 0.00663), b=3.22 (3.05 - 3.39), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
栄養段階 (Ref. 69278
): 3.9 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref. 120179
): 手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
弱み (Ref. 59153
): Low to moderate vulnerability (33 of 100) .