Sexual Behavior and Reproductive Success of Guppy Poecillia reticulata (Poeciliidae) at a Constant Temperature and in the Temperature Gradient Field

The sexual behavior of males and the reproductive success of the guppy Poecilia reticulata were studied under experimental conditions in a temperature gradient field of 24–28°С and at a constant temperature of 26°С. The intensity of courtship of males for females in the temperature gradient field wa...

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Bibliographic Details
Published in:Journal of ichthyology 2023-10, Vol.63 (5), p.969-974
Main Author: Zdanovich, V. V.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Breeding success
Courtship
Fecundity
Females
Fish
Life Sciences
Males
Reproduction
Reproductive behavior
Reproductive behaviour
Sexual behavior
Sexual behaviour
Temperature gradients
Zoology
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Summary:The sexual behavior of males and the reproductive success of the guppy Poecilia reticulata were studied under experimental conditions in a temperature gradient field of 24–28°С and at a constant temperature of 26°С. The intensity of courtship of males for females in the temperature gradient field was 1.6 times higher than at 26°С, while the structure of male sexual behavior changed: the frequency of manifestation of demonstrative forms of behavior and copulations increased. On average, the individual female fecundity was 19.0% higher in the temperature gradient field than in the constant temperature regime. Temperature fluctuations experienced by fish when exposed to a temperature gradient field had a stimulating effect on the intensity of male courtship and the reproductive success of guppies.
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945223050168