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Comparative growth and mortality of cultured Lion’s Paw scallops (Nodipecten subnodosus) from Gulf of California and Pacific populations and their reciprocal transplants

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This study focused on the comparison of growth and mortality of Lion’s Paw scallops Nodipecten
subnodosus from Gulf of California and Pacific populations and their reciprocal transplants, cultured
in suspended module and bottom culture in Baja California Sur, Mexico. Environmental parameters
were monitored to determine site-specific differences and were correlated with scallops’ population-
specific responses. Significant differences in growth were found between sites, populations and
grow-out methods. Growth performance of scallops originating from the Pacific population was lower
and uniform between Pacific and Gulf culture sites, whereas Gulf scallops cultured at the Pacific
site grew better. Growth and survival was higher in suspended than bottom culture, mainly due to
depth-associated differences in food and oxygen supply. Increasing temperatures and decreasing
food and oxygen during summer months resulted in depressed growth and elevated mortality. At the
Pacific site, this was partially compensated by considerably higher food availability. Gulf scallops
resisted high diurnal temperature changes at San Buto significantly better than Pacific scallops. They
also survived generally better than the Pacific population, independent of site and grow-out method,
indicating physiological adaptations to high temperatures and low food availability in their habitatThis study focused on the comparison of growth and mortality of Lion’s Paw scallops Nodipecten
subnodosus from Gulf of California and Pacific populations and their reciprocal transplants, cultured
in suspended module and bottom culture in Baja California Sur, Mexico. Environmental parameters
were monitored to determine site-specific differences and were correlated with scallops’ population- specific responses. Significant differences in growth were found between sites, populations and
grow-out methods. Growth performance of scallops originating from the Pacific population was lower
and uniform between Pacific and Gulf culture sites, whereas Gulf scallops cultured at the Pacific
site grew better. Growth and survival was higher in suspended than bottom culture, mainly due to
depth-associated differences in food and oxygen supply. Increasing temperatures and decreasing
food and oxygen during summer months resulted in depressed growth and elevated mortality. At the
Pacific site, this was partially compensated by considerably higher food availability. Gulf scallops
resisted high diurnal temperature changes at San Buto significantly better than Pacific scallops. They
also survived generally better than the Pacific population, independent of site and grow-out method,
indicating physiological adaptations to high temperatures and low food availability in their habitat
Consequently, the Gulf population appears to be more feasible for aquaculture operations in coastal lagoons with stressful conditions.

Keywords: Growth, mortality, aquaculture, pectinids, scallop, nodipecten subnodosus

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Ketersediaan

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Informasi Detail

Judul Seri

Aquaculture Research

No. Panggil

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Penerbit

Mexico : John Wiley & Sons Ltd., 2013

Deskripsi Fisik

Aquaculture Research, 2015, 46, 185–201

Bahasa

English

ISBN/ISSN

doi:10.1111/are.1217

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2015, 46, 185–201

Subjek

PERIKANAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Mutia/Agus

Versi lain/terkait

Lampiran Berkas

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