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首页> 外文期刊>Journal of experimental marine biology and ecology >Effect of temperature on embryonic development of Octopus mimus under controlled conditions
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Effect of temperature on embryonic development of Octopus mimus under controlled conditions

机译：Effect of temperature on embryonic development of Octopus mimus under controlled conditions

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摘要

Although the mechanism by which temperature modulates the use of reserves and its consequences for organogenesis in octopus species is not yet known, there is evidence that temperature modulates the embryonic growth rate in cephalopods with consequences for hatchling characteristics. The primary objective of this study was to investigate the effect of temperature (12,15,18 and 21 ℃) on the duration of Octopus mimus embryo development and to generate a prediction model. The effects of temperature on size and physiological characteristics of embryos at stage XV were also studied. A third objective was to investigate whether temperature affects the time taken to reach stage XX using physiological time, i.e. degree-days (DD). The time taken to reach stage XV at 21 ℃ was 24,58 and 75 shorter than observed in eggs maintained at 18,15 and 12 ℃ respectively. Logarithmic models were obtained for the relationship between embryo stage and age, demonstrating an inverse relationship between environmental temperature and the duration of embryonic development Embryos maintained at 18 and 21 ℃ grew faster than those kept at 12 and 15 ℃, although that growth rate was accomplished by an inverse relationship between yolk and temperature. The degree-day model suggests that between 128 and 133 DD should be accumulated when embryos are maintained at 15 to 21 ℃ As in other invertebrate species the results on oxygen consumption indicate that embryos of 0. mimus have a higher sensitivity to temperature than adults. The results suggest that the optimum range of temperatures for these embryos is around 15 to 18 ℃.

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  • 作者

    I. Uriarte; V. Espinoza; M. HerreraO.ZunigaA. OlivaresP.CarbonellS. PinoA. FariasG Rosas;

  • 作者单位

    Instituto de Acuicultura (Aquaculture Institute), Universidad Austral de Chile, Chile,Centro de Investigati6n y Desarrotlo CIEN Austral CONICYT- Regional Goberment Los Lagos R10C1002, Chile,Hatchery de Invertebrados Marinos (Marine Invertebrate Hatchery),;

    Hatchery de Invertebrados Marinos (Marine Invertebrate Hatchery), Universidad Austral de Chile, Chile;

    Facultad de Recursos del Mar (Faculty of Marine Resources), Universidad Antofagasta, Antofagasta, ChileInstituto de Acuicultura (Aquaculture Institute), Universidad Austral de Chile, Chile,Centro de Investigati6n y Desarrotlo CIEN Austral CONICYT- Regional Goberment Los Lagos R10C1002, ChileUnidad Multidisciplinaria de Docenda e Investigation de Sisal, Facultad de Cientias, Universidad National Autonoma de Mexico, Merida, MexicoCentro de Investigati6n y Desarrotlo CIEN Austral CONICYT- Regional Goberment Los Lagos R10C1002, Chile;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 水生生物学;
  • 关键词

    embryonic development; octopus mimus; temperature;

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