气候变化领域集成服务门户(CCPortal): Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.831728
	Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation
	Fitzer; Susan C; Caldwell; Gary S; Close; Andrew J; Clare; Anthony S; Upstill-Goddard; Robert C; Bentley; Matthew G
发布日期	2012-04-14
数据集类型	dataset
英文关键词	Animalia ; Arthropoda ; Bottles or small containers/Aquaria ( 20 L) ; Coast and continental shelf ; Growth/Morphology ; Laboratory experiment ; North Atlantic ; Pelagos ; Reproduction ; Single species ; Temperate ; Tisbe battagliai ; Zooplankton
英文简介	Climate change, including ocean acidification (OA), presents fundamental challenges to marine biodiversity and sustained ecosystem health. We determined reproductive response (measured as naupliar production), cuticle composition and stage specific growth of the copepod Tisbe battagliai over three generations at four pH conditions (pH 7.67, 7.82, 7.95, and 8.06). Naupliar production increased significantly at pH 7.95 compared with pH 8.06 followed by a decline at pH 7.82. Naupliar production at pH 7.67 was higher than pH 7.82. We attribute the increase at pH 7.95 to an initial stress response which was succeeded by a hormesis-like response at pH 7.67. A multi-generational modelling approach predicted a gradual decline in naupliar production over the next 100 years (equivalent to approximately 2430 generations). There was a significant growth reduction (mean length integrated across developmental stage) relative to controls. There was a significant increase in the proportion of carbon relative to oxygen within the cuticle as seawater pH decreased. Changes in growth, cuticle composition and naupliar production strongly suggest that copepods subjected to OA-induced stress preferentially reallocate resources towards maintaining reproductive output at the expense of somatic growth and cuticle composition. These responses may drive shifts in life history strategies that favour smaller brood sizes, females and perhaps later maturing females, with the potential to profoundly destabilise marine trophodynamics.
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/217511
推荐引用方式 GB/T 7714	Fitzer,Susan C,Caldwell,et al. Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation.2012-04-14.https://doi.org/10.1594/PANGAEA.831728.