Prey size spectra and predator to prey size ratios of southern ocean salps

Prey size spectra and predator to prey size ratios of southern ocean salps
复制标题

南大洋樽海鞘的猎物尺寸谱和捕食者与猎物的尺寸比率

DOI:
10.1007/s00227-023-04187-3
复制
发表时间:
2023
期刊:
影响因子:
2.4
通讯作者:
Stukel, Michael R.
Stukel, Michael R.
中科院分区:
生物学2区
文献类型:
--
作者:
Fender, Christian K.;Décima, Moira;Gutiérrez-Rodríguez, Andres;Selph, Karen E.;Yingling, Natalia;Stukel, Michael R.

文献摘要

参考文献

被引文献

相似文献

海鞘放牧在形成营养丰富的食物网结构方面很重要。然而,很少有人知道他们的猎物在外地的大小范围或放牧如何影响大小结构。本研究调查了7种不同种类的海鞘的食性,代表了新西兰东部亚热带和亚热带沃茨的各种大小和生命阶段。扫描电子显微镜检查肠道内容物的58海鞘,然后进行比较,水柱浮游生物群落特征通过荧光显微镜,FlowCam,流式细胞仪。虽然大部分的肠道内容物类似于周围的沃茨,但在一些共存物种中发现了实质性差异,例如在较小的海鞘(如Thalia democratica)中亚微米细菌的保留增加。我们发现,即使对于那些能够有效地以细菌为食的海鞘,微型浮游生物和小型浮游生物仍然占肠道生物量的大部分。较大的微型浮游生物在肠道中比在水柱中更罕见,这可能表明除了以前大多数工作的重点是较低的尺寸阈值之外,还有一个较高的尺寸阈值。Salp碳加权捕食者与猎物的大小比例是可变的,大多数在1000:1和10,000:1之间,这在很大程度上取决于Salp的大小。综上所述,我们的研究结果表明,尽管能够以亚微米颗粒为食,微微型浮游生物构成最多26.4%(平均值= 6.4%)的salp肠道碳和相对不重要的能量在这一地区的大多数salp相比,nanoflancaster,如小型甲藻和硅藻。
Salp grazing is important in shaping planktonic food-web structure. However, little is known about the size ranges of their prey in the field or how grazing impacts size structure. This study investigated the feeding habits of seven different species of salps, representing a variety of sizes and life stages across subtropical and subantarctic waters east of New Zealand. Scanning electron microscopy was used to examine the gut contents of 58 salps, which were then compared to water column plankton communities characterized via epifluorescence microscopy, FlowCam, and flow cytometry. While most of the gut contents resembled ambient waters, substantial differences were found amongst some co-occurring species, such as increased retention of submicron bacteria amongst smaller salps likeThalia democratica. We found that even for those salps capable of feeding on bacteria efficiently, nanoplankton and small microplankton still made up the majority of gut biomass. Larger microplankton were rarer in the guts than in the water column, potentially suggesting an upper size-threshold in addition to the lower size-threshold that has been the focus of most previous work. Salp carbon-weighted predator to prey size ratios were variable, with the majority falling between 1000:1 and 10,000:1 depending largely on the size of the salp. Taken together our results indicate that despite being able to feed on submicron particles, picoplankton make up at most 26.4% (mean = 6.4%) of salp gut carbon and are relatively unimportant to the energetics of most salps in this region compared to nanoplankton such as small dinoflagellates and diatoms.
大型樽海鞘和原生食草动物之间的尺寸特异性放牧和竞争性相互作用
DOI: 10.1002/lno.11770
发表时间: 2021
影响因子: 4.5
作者:
Stukel, Michael R.;Décima, Moira;Selph, Karen E.;Gutiérrez‐Rodríguez, Andres
通讯作者: Gutiérrez‐Rodríguez, Andres
银鳅(Seriolella punctata)和白鳅(Seriolella caerulea)饮食的比较
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
P. Horn;T. Burrell;A. Connell;M. Dunn
通讯作者: M. Dunn
DOI: --
发表时间: 1983
期刊:
影响因子: --
作者:
M. M. Mullin
通讯作者: M. M. Mullin
肠道内容物的分子分析:从不同角度阐明拉扎列夫海中同时存在的樽海鞘的摄食
DOI: --
发表时间: 2014
期刊: Antarctic Science
影响因子: 1.6
作者:
Katja Metfies;Anja Nicolaus;L. Von Harbou;U. Bathmann;I. Peeken
通讯作者: I. Peeken
樽海鞘(Tunicata)的内管柱和进食过滤器
影响因子: 1.2
作者:
Q. Bone;C. Carré;K. Ryan
通讯作者: K. Ryan