About Through-Cultivation of Two Commercial Bivalve Molluscs

Gabaev, Delik D.

doi:10.15406/jamb.2017.05.00131

Cited by 1 publication

(2 citation statements)

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“…2). This reduces competition among bivalves and increases their survival and growth rates in comparison with those observed in constructions of the Japanese design [18]. In spite of the small mesh size of the netting cover of the collector-cages (5 mm) set up at the bottom, most P. yessoensis in them reached commercial size within three years; the growth rate of the commercial species Chlamys nipponensis (Fig.…”

Section: Resultsmentioning

confidence: 90%

“…The anchored position of collectors, in contrast to a hanged culture, reduces stress in cultivated species and increases the growth and survival rates in bivalves [38]. By the second and third years, much fewer invertebrate larvae settle on collector-cages [39]; the main competitor of the scallop, M. trossulus, does not live for more than two years in Possyet Bay [40]; and the overlapping cones in the inner part of collector prevents predators from moving in it.…”

Section: Resultsmentioning

confidence: 99%

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A Way to Decrease the Negative Impact of Aquaculture on other Marine Inhabitants

Gabaev¹

2017

JESE-A

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Spat collectors deployed at sea, in addition to the target species, attract also many larvae of accompanying species, which die after transplanting the cultivated one into cages. However, these juveniles often have a higher value than the cultivated species, and their mortality is caused by smaller sizes. These are: red king crab, Japanese sea cucumber, sea urchins, Japanese cucumaria and several species of ascidians and sponges. However, the use of a realized niche, rather than a fundamental one, in selecting the area and depth to install collectors, and also improvement of their design, make it possible to cultivate a target species without reseeding to other constructions. This not only facilitates the cultivation process, but also increases the survival rate of the cultivated and accompanying species, since at the bottom, they reach either marketable or viable size in comfortable conditions.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%