Advanced

Environmental water flow can boost foraging success of the juvenile rapa whelk Rapana venosa (Muricidae) in aquaculture tanks with still or flowing water : Indication of chemosensory foraging

Yu, Zheng Lin; Hu, Nan LU ; Yang, Mei Jie; Song, Hao; Hu, Zhi; Wang, Xiao Long; Zhou, Cong; Zhang, Zhi Xin and Zhang, Tao (2019) In Aquaculture 513.
Abstract

Artificial breeding of Rapana venosa has been attempted in China, but the high mortality rate of rapa whelk juveniles (10–40 mm) seriously restricts the breeding success of this species in artificial cultivation and the overall aquaculture industry, and thus the scale of industrialization is far from being realized. One main factor was found to contribute to this high mortality rate: the low predation efficiency of juveniles. We studied the foraging behavior of various sized R. venosa juveniles in still, flowing, and circulating water, with the juveniles being positioned either upstream or downstream from the prey in the flowing water experiments. Our findings demonstrated that the distance between juveniles and prey in still water... (More)

Artificial breeding of Rapana venosa has been attempted in China, but the high mortality rate of rapa whelk juveniles (10–40 mm) seriously restricts the breeding success of this species in artificial cultivation and the overall aquaculture industry, and thus the scale of industrialization is far from being realized. One main factor was found to contribute to this high mortality rate: the low predation efficiency of juveniles. We studied the foraging behavior of various sized R. venosa juveniles in still, flowing, and circulating water, with the juveniles being positioned either upstream or downstream from the prey in the flowing water experiments. Our findings demonstrated that the distance between juveniles and prey in still water significantly restricted the ability of juveniles to locate food, but water flow significantly enhanced this ability. In addition, the small-sized juveniles were found to be more active predators than the larger sized juveniles. Our findings demonstrated that circulating water flow is important to improve the survival and growth rate of juveniles in R. venosa cultures. Our results broaden the understanding of chemical orientation in gastropods and can be used to develop or improve commercial breeding strategies for R. venosa.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Artificial breeding, Foraging behavior, Search time, Velocity of water flow
in
Aquaculture
volume
513
publisher
Elsevier
external identifiers
  • scopus:85070791516
ISSN
0044-8486
DOI
10.1016/j.aquaculture.2019.734392
language
English
LU publication?
yes
id
1aee10a5-8f69-47c0-9921-7690a2c8b6dc
date added to LUP
2019-09-09 11:07:52
date last changed
2019-09-26 04:41:51
@article{1aee10a5-8f69-47c0-9921-7690a2c8b6dc,
  abstract     = {<p>Artificial breeding of Rapana venosa has been attempted in China, but the high mortality rate of rapa whelk juveniles (10–40 mm) seriously restricts the breeding success of this species in artificial cultivation and the overall aquaculture industry, and thus the scale of industrialization is far from being realized. One main factor was found to contribute to this high mortality rate: the low predation efficiency of juveniles. We studied the foraging behavior of various sized R. venosa juveniles in still, flowing, and circulating water, with the juveniles being positioned either upstream or downstream from the prey in the flowing water experiments. Our findings demonstrated that the distance between juveniles and prey in still water significantly restricted the ability of juveniles to locate food, but water flow significantly enhanced this ability. In addition, the small-sized juveniles were found to be more active predators than the larger sized juveniles. Our findings demonstrated that circulating water flow is important to improve the survival and growth rate of juveniles in R. venosa cultures. Our results broaden the understanding of chemical orientation in gastropods and can be used to develop or improve commercial breeding strategies for R. venosa.</p>},
  articleno    = {734392},
  author       = {Yu, Zheng Lin and Hu, Nan and Yang, Mei Jie and Song, Hao and Hu, Zhi and Wang, Xiao Long and Zhou, Cong and Zhang, Zhi Xin and Zhang, Tao},
  issn         = {0044-8486},
  keyword      = {Artificial breeding,Foraging behavior,Search time,Velocity of water flow},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {Aquaculture},
  title        = {Environmental water flow can boost foraging success of the juvenile rapa whelk Rapana venosa (Muricidae) in aquaculture tanks with still or flowing water : Indication of chemosensory foraging},
  url          = {http://dx.doi.org/10.1016/j.aquaculture.2019.734392},
  volume       = {513},
  year         = {2019},
}