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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.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
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)
اندازه / وزن / سن
بلوغ: 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).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | 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 2025-2 (Global))
استفاده انسانی
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منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00741 (0.00346 - 0.01589), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
سطح تروفیک (مرجع 69278) |
3.2 ±0.3 se; based on size and trophs of closest relatives |
جهندگی (مرجع 120179) |
زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.). |
آسیبپذیری ماهیگیری (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |