分類 / 名前
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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Sicydiinae
Etymology: Sicydium: Greek, sika, sikya = cucumber ; diminutive (Ref. 45335).
Eponymy: Gabriel de Bustamenté was a Brazilian slave trader on São Tomé Island, Gulf of Guinea. His occupation did not stop Greef describing him as the ‘hospitable and intelligent’ (translation) owner of a farm situated on São Tomé. (Ref. 128868), visit book page.
Taxonomic Remarks
This species is validated by Risch et al. (1979: Ref. 89459) who found the types, thus it is not a nomen nudum and the name is available. The species is confirmed under this name by Pezold et al. (2006: Ref. 59380). Therefore, the species should not be attributed to Boulenger, 1916 (as Sycidium bustamantaei).
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性; 両側回遊性 (Ref. 92840). Tropical
Eastern Atlantic: islands of Bioko, Sao Tome, Principe and Pagalu (= Annobon) in the Gulf of Guinea, up to altitudes of 1,200 m; might also occur in the Lobe and Kribi Rivers of Cameroon, but this requires confirmation (Ref. 79590).
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 100.0 cm SL オス/雌雄の選別がない; (Ref. 79590)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 6 - 7; 背鰭 (合計) : 9 - 10; 肛門の骨: 1; 臀鰭: 9 - 10. Diagnosis: posterior tip of upper jaw extends to vertical level of anterior third, or half, of eye; single row of long, slender, unicuspid setiform teeth on upper jaw, 19-49 teeth on each half (left and right) of upper jaw, separated by median tubercle (Ref. 79590). Upper lip smooth (Ref. 57403, 79590), with an inner longitudinal furrow and a small, median tubercle (fleshy swelling)(Ref. 79590). Median notch in upper lip absent or small (Ref. 79590). 3 pores in preopercular canal; flanks with checker-board arrangement of small, light and dark patches (Ref. 57403, 79590).
Body shape (shape guide): elongated.
Amphidromous endemics living as adults in clearwater streams from the rivers Lobe and Kribi, Southern Cameroon. Also from a stream located above several hundred meter high cascade of Rio Ilady, Bioko Island at an altitude of over 100m (Ref. 92840).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Risch, L. and D.F.E. Thys van den Audenaerde, 1979. On the West African species of the genera Sicydium Cuv. & Val. and Lentipes Gthr. Revue de Zoologie Africaine 93(4):882-900. (Ref. 89459)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: 興味がない
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
回復力 (参照
120179): 非常に低い, １４年以上の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): High to very high vulnerability (73 of 100).
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