Effect of thermal stress on survival and delay of metamorphosis in larvae of the purple sea urchin strongylocentrotus purpuratus Report as inadecuate




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E Carpizo-Ituarte ;Ciencias Marinas 2011, 37 (4A)

Author: L Díaz-Pérez

Source: http://www.redalyc.org/


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Ciencias Marinas ISSN: 0185-3880 cmarinas@uabc.mx Universidad Autónoma de Baja California México Díaz-Pérez, L; Carpizo-Ituarte, E Effect of thermal stress on survival and delay of metamorphosis in larvae of the purple sea urchin Strongylocentrotus purpuratus Ciencias Marinas, vol.
37, núm.
4A, diciembre, 2011, pp.
403-414 Universidad Autónoma de Baja California Ensenada, México Available in: http:--www.redalyc.org-articulo.oa?id=48020747003 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Ciencias Marinas (2011), 37(4A): 403–414 Effect of thermal stress on survival and delay of metamorphosis in larvae of the purple sea urchin Strongylocentrotus purpuratus C M Efecto del estrés térmico en la supervivencia y el retraso de la metamorfosis en larvas del erizo morado Strongylocentrotus purpuratus L Díaz-Pérez, E Carpizo-Ituarte* Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Apartado postal 453, Km 103 carretera Tijuana-Ensenada, Ensenada 22800, Baja California, México. *Corresponding author.
E-mail: ecarpizo@uabc.edu.mx, ecarpizo@gmail.com ABSTRACT.
The effect of thermal stress (heat shock) on survival was evaluated for advanced larval stages and the possible effect on delay of metamorphosis in competent larvae was also evaluated in the purple sea urchin Strongylocentrotus purpuratus under laboratory conditions. Eight-arm precompetent and competent larvae were kept at 15, 19, 23, 28, and 31 ºC during 24 h to estimate their thermal tolerance and measure their survival in each treatment.
Delay of metamorphosis was evaluated in competent larvae exposed to heat shock treatments of 15, 20, 24, 28, and 32 ºC for 30 min.
After this, larvae were induced to metamorphose in the prese...





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