U.S. GLOBEC: Life History Events of Calanus Finmarchicus (Copepoda) on Georges Bank, A Component of U.S. GLOBEC: Ichthyoplankton and Zooplankton in the Georges Bank Region

具体的研究旨在研究GLOBEC的目标物种之一——桡足动物Calanus finmarchicus的生活史事件。将为缅因湾和乔治海岸的C. finmarchicus的生活史事件、种群增长和平流运输开发个体矢量模型。下颌形态和性腺发育将被用来量化决定进入滞育或成熟的个体的比例。齿的形成也将表明在秋季和冬季，种群何时结束或继续滞育。滞育/成熟决定和性别变化频率将通过DNA片段分析来检验。这些研究将记录影响性别决定的年际环境因素。蜡的储存率将通过视频显微镜和医学扫描色谱法来估计。本项目所做的工作将构成西大西洋部分的一个国际项目，名为大西洋大西洋研究的Calanus finmarchicus。将在挪威（两个纬度）、冰岛、苏格兰北部和北海进行关于生活史决定、变性频率和脂质储存的平行研究。+-±- + _ Ûª烧ÑOhª‘ +’ª0 h + Õ $ h l +¢D R:\WWUSER\TEMPLATE\NORMAL。点 谢乐尔·米勒 @ -+ Y +ª) @ -+ Y +ª) @ U░E S m m r f y我n o r m t I o n ( ++++++++++++ ` + ++++++++++++ ++++++++++++++++++++++++█@ªí- Microsoft Word 6.0Õªe =- e OªO f f f f f f f f f 1 z z z z z z z z z z z z z & (F = = ÷ = T ' ' z z z z z z z z z z z z & & P X z & & & z0”

Specific studies are designed to examine aspects of life history events in one of the GLOBEC target species, the copepod Calanus finmarchicus. Individual vector models will be developed for life history events, population growth, and advective transport for C. finmarchicus in the Gulf of Maine and over Georges Bank. Mandibular morphology and gonad development will be used to quantify the proportions of individuals that decide to enter diapause or to mature. Tooth formation will also serve to indicate when stocks are ending or continuing diapause in autumn and winter months. Diapause/maturation decisions and sex change frequency will be examined by analyses of DNA fragments. These studies will document interannual environmental factors that influence sex determination. Wax storage rates will be estimated by video microscopy and Iatroscan chromatography. Work done by this project will constitute the western Atlantic component of a international program titled TransAtlantic Studies of Calanus finmarchicus. Parallel studies on life history decisions, sex change frequency, and lipid storage will be conducted off Norway (two latitudes), Iceland, northern Scotland and in the North Sea. +- ±- + _ Ûª▓ ÑOh ª' +'ª▒0 h + Õ $ H l + ¢ ╗ D R:\WWUSER\TEMPLATE\NORMAL.DOT Sheryl Miller @ -+Y+ª) @ -+Y+ª) @ Ù░E S u m m a r y I n f o r m a t i o n ( ++++++++++++ ` + ++++++++++++ ++++++++++++ ++++++++++++ ▀ @ ªí- Microsoft Word 6.0 9 Õªe =- e O ª O f f f f f f p f 1 z z z z z z z z & ( ( ( F = = ÷ = T ' ` z z z z z z z z z z z z z z & P X z & z - z 0"