Molecular identity and demographic responses to salinity of a freshwater strain of Brachionus plicatilis from the shallow Lake Patzcuaro, Mexico
Por:
Nandini, S., Pena-Aguado, Fabiola, Rebolledo, Uriel Arreguin, Sarma, S. S. S., Murugan, Gopal
Publicada:
1 ago 2019
Resumen:
Brachionus plicatilis is one of the most important rotifers used in
aquaculture worldwide. We found a strain of B. plicatilis in Lake
Patzcuaro, a shallow water body in Central Mexico, which also supports
several species of endemic fish. Here we present an investigation of the
life-table demography and population growth of B. plicatilis at
salinities of 5, 10, 15, 20, and 25 g L-1, and the molecular identity of
this rotifer, comparing its genetic relation with other related taxa.
The experiments were conducted using standard cohorts in five
replicates. We found that this strain of B. plicatilis was better
adapted to low (5 and 10 g L-1) rather than high salinities, with the
survivorship ranging from 15 to 18 days, but 50 % mortality of the
population occurred by day 6. The population-growth rate varied from 0.2
to 0.35 d(-1). We discuss the results with reference to similar studies
conducted on several strains and species of the Brachionus plicatilis
complex and the importance of our findings for aquaculture of endemic
fish from this ancient shallow lake.
Filiaciones:
Nandini, S.:
Univ Nacl Autonoma Mexico, Div Invest & Postgrad Studies, Lab Aquat Zool, Campus Iztacala, Tlalnepantla, Edo Mex, Mexico
Pena-Aguado, Fabiola:
Ctr Sci Res & Higher Educ Ensenada CICESE, Carretera Ensenada Tijuana 3918, Ensenada 22860, Baja California, Mexico
Rebolledo, Uriel Arreguin:
Univ Autonoma Sinaloa, Posgrad Ciencias Recursos Acuat, Fac Ciencias Mar, Paseo Claussen S-N Col Los Pinos, Mazatlan 82000, Sinaloa, Mexico
Sarma, S. S. S.:
Univ Nacl Autonoma Mexico, Div Invest & Postgrad Studies, Lab Aquat Zool, Campus Iztacala, Tlalnepantla, Edo Mex, Mexico
Murugan, Gopal:
CIBNOR, Planeac Ambiental & Conservac, La Paz 23096, Baja Calif Sur, Mexico
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