PIMRIS Regional Repositry
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close this section of the library Mollusc fisheries

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View the PDF document Breeding season of Tongan shellfish. 2. Ark clams (Kaloa'a), Anadara spp. (In Fisheries Research Bulletin of Tonga, Volume 2, 1994)
Author(s): Sone, S.
Publisher: Ministry of Fisheries, Tonga
Place: Nuku'alofa (Tonga)
Date: 1994
Notes: pp. 19-26
ASFA Keywords: Breeding seasons, Shellfish fisheries, Mollusc fisheries
Country Collection: Tonga
Abstract: By examination of sex ratio of A. antiquata and A. maculosa of various size groups, it has been shown that the former species performs sex inversion from male to female at the size range between 45mm and 60mm in shell length. The latter species does not seem to perform such sex inversion.

View the PDF document The present status of introduced trochus and green snail in the Tongatapu Island group (In Fisheries Research Bulletin of Tonga, Volume 4, 1995)
Author(s): Kikutani, K., Fa'anunu, 'U., Manu, N.
Publisher: Ministry of Fisheries, Tonga
Place: Nuku'alofa (Tonga)
Date: 1995
Notes: pp. 31-36
ASFA Keywords: Marine molluscs, Mollusc fisheries, Fishery development, Surveys
Country Collection: Tonga
Abstract: Trochus, Trochus niloticus, and green snail, Turbo marmoratus, contribute to the foreign income of the South Pacific Islands countries, however, although there are suitable habitats for them, neither species occurs naturally in Tonga.

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