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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
بوم شناسي
دريايي نزديك كف زي; تغييرات عمق 25 - 50 m (Ref. 75057). Subtropical
Northwest Pacific; oof southwest coast of Shikoku and Izu Islands (Japan)
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 5.0 cm SL (female)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
خارهاي باله پشتي (کل) : 7; شعاع نرم باله پشتي (کل) : 11; خارهاي باله مخرجي: 1; شعاع نرم باله مخرجي: 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
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-1)
استفاده انسانی
ابزارها
گزارش های ويژه
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منابع اينترنتي
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
جهندگی (Ref.
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
