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Rochia nilotica   (Linnaeus, 1767)

Commercial top
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Image of Rochia nilotica (Commercial top)
Rochia nilotica

Nauru country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: C: Ref. 106736.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/nr.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Vunisea, A., S. Pinca, K. Friedman, L. Chapman, F. Magron, S. Sauni and F. Lasi, 2008
National Database:

Common names from other countries

Commercial top shell, ... more

Classification / Names / Names народные названия | синонимы | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS

> Trochida () > Tegulidae () > Trochinae

Environment: milieu / climate zone / depth range / distribution range экология

; пределы глубины 0 - 20 m (Ref. 349).   Tropical; 32°N - 25°S, 45°E - 171°E (Ref. 81851)

распространение страны | регионы FAO | Ecosystems | места находок | интродукции

Indo-Pacific: from Madagascar, Sri Lanka, Andaman and Nicobar Islands, to as far east as French Polynesia, north to southern Japan and Hawaii, and south to Australia.

Length at first maturity / Size / Вес / Возраст

Maturity: Lm ?  range ? - ? cm Max length : 15.0 cm SHH самец/пол неопределен; (Ref. 349); common length : 11.0 cm SHL самец/пол неопределен; (Ref. 349)

Краткое описание морфология

Shell conical, large, thick and very heavy. Body whorl almost smooth, with concave sides above a protuding, acutely rounded and thickened periphery. Base shell flat. Aperture squarish. Colouration: shell off-white, with large irregular axial reddish stripes (Ref. 128042).

биология     глоссарий (например epibenthic)

It is the most economically important gastropod species in the tropical West Pacific. It is both an important traditional food and a leading export item used as a source of mother-of-pearl material for buttons and jewelry. Many small sized artisanal fisheries for meat and shell exist in other islands of the area. Due to severe and frequent overfishing, management policies are often adopted and aquaculture trials are under way (Ref. 349). Maximum depth from Ref. 799. Typically found in shallow, high energy portions of barrier and reefs (Refs. 349, 128042). Feeds on filamentous algae and generally avoids bottoms of sand and living corals. Population density generally decreasing in deeper areas, while the mean size of individuals increases (Ref. 349).

Life cycle and mating behavior половая зрелость | размножение | нерест | икра | Fecundity | личинки

Breeding period is marked by spring tides with external fertilization and nocturnal spawning.

Основная ссылка ссылки | координатор | соавторы

Poutiers, J.M. 1998. (Ref. 349)

Статус Красного Списка МСОП (Ref. 130435)

  Не определен 

Статус СИТЕС (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

  Harmless

Использование человеком

рыболовство: коммерческий
FAO - рыболовство: landings | FishSource | Sea Around Us

инструменты

E-book | полевой определитель

ресурсы в Интернет

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(рыболовство: ; publication : search) | GenBank (Геном, Нуклеотид) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Вперёд, поиск) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 26.3 - 29.3, mean 28.7 (based on 2725 cells).
устойчивость к внешним воздействиям (Ref. 69278) средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (K=0.19-0.36).
Уязвимость (Ref. 71543): Low vulnerability (10 of 100).
Категория цены (Ref. 80766): Unknown.