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פותח על ידי קלירמאש פתרונות בע"מ -
The effects of illumination and daily number of collections on fry yields in guppy breeding tanks
Year:
2013
Source of publication :
Aquacultural Engineering
Authors :
ברקי, אסף
;
.
ציון, בועז
;
.
קרפלוס, אילן
;
.
שפירא, לב
;
.
Volume :
57
Co-Authors:
Barki, A., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Zion, B., Institute of Agricultural Engineering, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Shapira, L., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Karplus, I., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
108
To page:
113
(
Total pages:
6
)
Abstract:
Substantial loss of fry to cannibalism by brood-fish occurs in live-bearing ornamental fish farms. Previous results demonstrated that fry yields in breeding tanks of the guppy fish ( Poecilia reticulata) can be increased by attracting the newborns by a light stimulus into net baskets from which they are collected. In the present study the effects of the number of daily collections and timing of lighting on fry yield in breeding tanks in the laboratory were tested. No difference in fry yield was found between one and two daily collections, and no effect of the timing of lighting (lighting during the day versus during the night). Contrasting of the morning and afternoon collections within the two-collection treatment under day lighting versus night lighting revealed that more fry were collected when the collection followed the lighting period than the no-lighting period. Experiments conducted in commercial farms revealed no difference in fry yields between one and two daily collections when the baskets were illuminated, concurring with the laboratory results. The farm experiments demonstrated that without illumination there is an advantage for two collections over one collection. Taken together, the results showed that the novel method of using light to attract newborn guppies into mesh baskets have a double benefit; it increases fry yields and concurrently lessens the labor required to harvest maximal fry yields in guppy breeding tanks. © 2013 Elsevier B.V.
Note:
Related Files :
Cannibalism
cyprinid
fish
fish culture
lightning
ornamental fish
Poecilia reticulata
Tanks (containers)
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.aquaeng.2013.09.001
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
28273
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:37
You may also be interested in
Scientific Publication
The effects of illumination and daily number of collections on fry yields in guppy breeding tanks
57
Barki, A., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Zion, B., Institute of Agricultural Engineering, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Shapira, L., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Karplus, I., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
The effects of illumination and daily number of collections on fry yields in guppy breeding tanks
Substantial loss of fry to cannibalism by brood-fish occurs in live-bearing ornamental fish farms. Previous results demonstrated that fry yields in breeding tanks of the guppy fish ( Poecilia reticulata) can be increased by attracting the newborns by a light stimulus into net baskets from which they are collected. In the present study the effects of the number of daily collections and timing of lighting on fry yield in breeding tanks in the laboratory were tested. No difference in fry yield was found between one and two daily collections, and no effect of the timing of lighting (lighting during the day versus during the night). Contrasting of the morning and afternoon collections within the two-collection treatment under day lighting versus night lighting revealed that more fry were collected when the collection followed the lighting period than the no-lighting period. Experiments conducted in commercial farms revealed no difference in fry yields between one and two daily collections when the baskets were illuminated, concurring with the laboratory results. The farm experiments demonstrated that without illumination there is an advantage for two collections over one collection. Taken together, the results showed that the novel method of using light to attract newborn guppies into mesh baskets have a double benefit; it increases fry yields and concurrently lessens the labor required to harvest maximal fry yields in guppy breeding tanks. © 2013 Elsevier B.V.
Scientific Publication
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