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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Inducible reproductive plasticity of the guppy Poecilia reticulata in response to predation cues
Year:
2004
Authors :
הרפז, שנאן
;
.
חולתא, גדעון
;
.
קרפלוס, אילן
;
.
Volume :
301
Co-Authors:
Dzikowski, R., Department of Animal Sciences, Fac. Agric., Food Environ. Qual. S., Hebrew University of Jerusalem, Rehovot 76100, Israel, Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel, Dept. of Microbiology and Immunology, Weill Med. Coll. of Cornell Univ., Box 62, 1300 York Avenue, W-704, New York, NY 10021, United States
Hulata, G., Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Harpaz, S., Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Karplus, I., Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
776
To page:
782
(
Total pages:
7
)
Abstract:
Predation has long been described as one of the major driving forces in evolution. Guppies (Poecilia reticulata) from natural populations exposed to different predation pressures, were found to have different life history traits. Reproductive plasticity in response to direct predation cues has mainly been reported for invertebrates. The goals of the present study were to determine whether exposure to predation cues would induce reproductive phenotypic plasticity in female guppies and to determine whether the effective cues are visual, chemical, or a combination of both. In our first experiment, female guppies exposed to predation cues of the african cichlids Aulonocara nyassae increased their reproductive output by almost two fold, having larger brood-sizes and shorter brood-interval at the first spawn. This effect disappeared in the second spawn in the absence of predators. In the second experiment we found that exposure to the predators induced an increase in the brood-size regardless of whether the cue was: only visual, only chemical, visual and chemical or visual, chemical and tactile. The impacts of these cues were equally powerful on the tested variables and they did not have any cumulative effect. Similar to the results of the first experiment, this effect disappeared in the second spawn, in the absence of predation cues. The present study demonstrates a direct immediate and reversible effect of predation cues on guppy reproduction. © 2004 Wiley-Liss, Inc.
Note:
Related Files :
Adaptation, Physiological
Animal
Animals
Cues
Female
Poecilia reticulata
predation
Reproduction
עוד תגיות
תוכן קשור
More details
DOI :
10.1002/jez.a.61
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23757
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
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Scientific Publication
Inducible reproductive plasticity of the guppy Poecilia reticulata in response to predation cues
301
Dzikowski, R., Department of Animal Sciences, Fac. Agric., Food Environ. Qual. S., Hebrew University of Jerusalem, Rehovot 76100, Israel, Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel, Dept. of Microbiology and Immunology, Weill Med. Coll. of Cornell Univ., Box 62, 1300 York Avenue, W-704, New York, NY 10021, United States
Hulata, G., Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Harpaz, S., Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Karplus, I., Department of Aquaculture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Inducible reproductive plasticity of the guppy Poecilia reticulata in response to predation cues
Predation has long been described as one of the major driving forces in evolution. Guppies (Poecilia reticulata) from natural populations exposed to different predation pressures, were found to have different life history traits. Reproductive plasticity in response to direct predation cues has mainly been reported for invertebrates. The goals of the present study were to determine whether exposure to predation cues would induce reproductive phenotypic plasticity in female guppies and to determine whether the effective cues are visual, chemical, or a combination of both. In our first experiment, female guppies exposed to predation cues of the african cichlids Aulonocara nyassae increased their reproductive output by almost two fold, having larger brood-sizes and shorter brood-interval at the first spawn. This effect disappeared in the second spawn in the absence of predators. In the second experiment we found that exposure to the predators induced an increase in the brood-size regardless of whether the cue was: only visual, only chemical, visual and chemical or visual, chemical and tactile. The impacts of these cues were equally powerful on the tested variables and they did not have any cumulative effect. Similar to the results of the first experiment, this effect disappeared in the second spawn, in the absence of predation cues. The present study demonstrates a direct immediate and reversible effect of predation cues on guppy reproduction. © 2004 Wiley-Liss, Inc.
Scientific Publication
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