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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobiinae
Etymology: rapa: From the word rapum, meaning turnip or rape (in reference to its minute golden yellow spots on head, body and fins like in rape blossoms) (Ref. 75057).
Eponymy: Professor Cornelius Jan van der Horst (1889–1951) was a Dutch zoologist who moved to South Africa (1928) and became Head of the Zoology Department, Witwatersrand University, Johannesburg. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
laut dasar (demersal); kisaran kedalaman 25 - 50 m (Ref. 75057). Subtropical
Northwest Pacific; oof southwest coast of Shikoku and Izu Islands (Japan)
Size / Weight / umur
Maturity: Lm ? range ? - ? cm
Max length : 5.0 cm SL (female)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
Duri punggung (Keseluruhan (total)) : 7; duri punggung lunak (Keseluruhan (total)) : 11; Duri dubur: 1; Sirip dubur lunak: 11. This species differs from other congeners in having the following characters: 11 segmented rays on second dorsal fin; 33-35 longitudinal scale count; no predorsal scales; 11-12 transverse scale count from origin of second dorsal fin backward and downward to anal-fin base; naked pectoral-fin base; third spine of first dorsal fin longest, slightly elongate and filamentous; sensory-papillae row comprising four sensory papillae; a deep trough along posterior margin of eyes (Fig. 5B); first dorsal fin with numerous minute scattered yellow spots and no yellow submarginal lines; four faint brownish (tinged with yellow) mid-lateral blotches (rather than saddle-like bars) on body (Ref. 75057).
Occurs in coarse sandy bottom around rubble area, and found to be symbiotically associated with the alpheid shrimps (Ref. 75057).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Iwata, A., K. Shibukawa and N. Ohnishi, 2007. Three new species of the shrimp-associated Goby genus Vanderhorsitia (Perciformes:Gobiidae: Gobiinae) from Japan, with re-descriptions of two related congeners. Bull. Natl. Mus. Nat. Sci. Ser. A, Suppl. 1:185-205. (Ref. 75057)
Status IUCN Red List (Ref. 130435: Version 2024-1)
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00355 - 0.02566), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.3 se; based on size and trophs of closest relatives
Daya lenting (Ref.
120179): Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
