Journal or Publishing Institution: Universidade Estadual Paulista
Study: https://repositorio.unesp.br/handle/11449/151033
Author(s): Gonçalves, B.B.
Article Type: Study
Record ID: 812
Abstract: Human population grows in bigger proportions then food production worldwide. To solve this problem, increase food production is required. Agriculture has potentialized food production through pesticides usage. Besides that, GMO’s increase production and usage of glyphosate based herbicide (HBG), since this product does not affect GMO’s. HBG’s have many side effects on non-target animals, such as fishes. Many studies demonstrated damage in a lot of tissues and DNA. However, effects on behavior and even in concentrations allowed by law have not been studies. We aim to assess the effects of a GHB on physiological and behavioral reproductive features of Poecilia reticulata as male sexual behavior, sexual interest, sperm quality and female receptivity. We used dichotomous and multiple-choice arenas for mate choice and viability, concentration, motility and morphology to assess sperm quality. HBG decrease female receptivity, affects male interest on perform displays and mate attempt with females exposed to 100µg/L. HBG also affected sperm quality of males exposed to 50µg/L concentration. Despite this, we did not find any effect on viability, concentration and motility of sperm cells of exposed males to any concentration. We conclude that HBG affects female receptivity, and, in turn, it affects sexual male effort, reducing display and mate attempt rate. Our data shows that HBG, even in environment relevant concentrations, can affect reproductive behavior and sperm quality. We show here the necessity to assess with more caution the toxicology of pollutants and its effects, as the law that regulates it.
Keywords: glyphosate based herbicide, guppies, Poecilia reticulata, fish, reproduction
Citation: Gonçalves, B.B., 2017. Efeitos de herbicida à base de glifosato em aspectos reprodutivos de guppies (Poecilia reticulata). Effects of glyphosate-based herbicides on reproductive features of guppies (Poecilia reticulata). Doctoral thesis, Universidade Estadual Paulista.
