scholarly journals Channeling vorticity: modeling the filter-feeding mechanism in silver carp using μCT and 3D PIV

2018 ◽  
Vol 221 (19) ◽  
pp. jeb183350 ◽  
Author(s):  
Karly E. Cohen ◽  
L. Patricia Hernandez ◽  
Callie H. Crawford ◽  
Brooke E. Flammang
Keyword(s):  
Silver Carp ◽  
Filter Feeding ◽  
Feeding Mechanism

Pre-treating algae-laden raw water by silver carp during Microcystis-dominated and non-Microcystis-dominated periods

2012 ◽  
Vol 65 (8) ◽  
pp. 1448-1453 ◽  
Author(s):  
Hua Ma ◽  
Fuyi Cui ◽  
Zhiquan Liu ◽  
Zhiwei Zhao
Keyword(s):  
Chlorophyll A ◽  
Green Algae ◽  
Total Phosphorus ◽  
Phytoplankton Community ◽  
Phosphorus Content ◽  
Silver Carp ◽  
Nutrient Level ◽  
Species Structure ◽  
Raw Water ◽  
Filter Feeding

Performance of pre-treating algae-laden raw water by silver carp during a non-Microcystis-dominated period (period I) and a Microcystis-dominated period (period II) was investigated in terms of algae cell concentration, total phosphorus content, chlorophyll a and phytoplankton species structure. During period I the ineffective filter-feeding for small green algae resulted in the increase of small single algae, which led to the negative removal of chlorophyll a, and when the biomass was higher, the negative was more significant. However, due to the effective filter-feeding of silver carp for Microcystis flos-aquae, the average removal efficiency exceeded 50% at all stocking biomass levels (20–120 g/m3) used in experiments during period II. Total phosphorus removal efficiencies could exceed 50% at silver carp biomass stocking levels of 60–80 g/m3 during both period I and period II. The experimental results indicated that silver carp stocking contributed to the removal of colony-forming cyanobacteria, but led to the increase of single-cell algae (mainly green algae and diatoms) during both period I and period II. The initial phytoplankton community structure and the control of nutrient level were important factors in the choice of silver carp stocking biomass when used to purify algae-loaded water.

The measurements of filtering parameters under breathing and feeding of filter-feeding silver carp (Hypophthalmichthys molitrix Val.)

Aquaculture ◽  
2011 ◽  
Vol 319 (1-2) ◽  
pp. 178-183 ◽  
Author(s):  
Zhigang Zhao ◽  
Shuanglin Dong ◽  
Fang Wang ◽  
Xiangli Tian ◽  
Qinfeng Gao
Keyword(s):  
Silver Carp ◽  
Hypophthalmichthys Molitrix ◽  
Filter Feeding

Effects of benthic-feeding common carp and filter-feeding silver carp on benthic-pelagic coupling: Implications for shallow lake management

2016 ◽  
Vol 88 ◽  
pp. 256-264 ◽  
Author(s):  
Xiufeng Zhang ◽  
Zhengwen Liu ◽  
Erik Jeppesen ◽  
William D. Taylor ◽  
Lars G. Rudstam
Keyword(s):  
Common Carp ◽  
Shallow Lake ◽  
Silver Carp ◽  
Lake Management ◽  
Filter Feeding ◽  
Benthic Pelagic Coupling

scholarly journals Trophic Patterns of Bighead Carp and Silver Carp Follow the Seasonality of Resource Availability

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1429
Author(s):  
Jia Yu ◽  
Jun Chen ◽  
Xuwei Deng ◽  
Zhixu Wu ◽  
Zuoming Yu ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Food Web ◽  
Trophic Level ◽  
Seasonal Variations ◽  
Silver Carp ◽  
Food Resources ◽  
Freshwater Ecosystems ◽  
Trophic Levels ◽  
Bighead Carp ◽  
Filter Feeding

The influence of seasonality of the aquatic environment on food web has been notoriously understudied in empirical ecology. In this study, we focus on seasonal changes in one key attribute of a food web, the trophic level. We determine whether seasonal variations of fish trophic levels could be indicated by the change in food resources. Silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) were used to explore the responses of trophic levels of the filter-feeding fish to seasonal variations of food resources. Combined stable isotopic analysis and dietary analysis revealed that filter-feeding fish tended to have a higher trophic level in spring (May) and autumn (September and October). This may result from the abundant density of food resources (zooplankton and phytoplankton) and fish flexible foraging strategy, as we predicted that the trophic level follows the seasonality of food availability. Pearson’ correlation analysis and a structural equation model showed that seasonal variation of total phosphorus and water temperature could indirectly affect trophic levels of silver carp and bighead carp by mediating the abundance of phytoplankton and zooplankton directly and indirectly along the food chain. According to these findings, the seasonal variation of food resources could be an important indicator of the temporal dynamics of the food web trophic pattern in freshwater ecosystems.

Effect of algae density on breathing and feeding of filter-feeding silver carp (Hypophthalmichthys molitrix Val.)

Aquaculture ◽  
2014 ◽  
Vol 433 ◽  
pp. 133-136 ◽  
Author(s):  
Zhigang Zhao ◽  
Shuanglin Dong ◽  
Fang Wang ◽  
Xiangli Tian ◽  
Qinfeng Gao
Keyword(s):  
Silver Carp ◽  
Hypophthalmichthys Molitrix ◽  
Filter Feeding

The responses of an aquatic ecosystem to the manipulation of the filter-feeding silver carp (Hypophthalmichthys molitrix)

2000 ◽  
Vol 27 (2) ◽  
pp. 1033-1039
Author(s):  
M. Fukushima ◽  
N. Takamura ◽  
B. H. Kim ◽  
M. Nakagawa ◽  
L. Sun ◽  
...  
Keyword(s):  
Aquatic Ecosystem ◽  
Silver Carp ◽  
Hypophthalmichthys Molitrix ◽  
Filter Feeding
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