Testicular morphometric changes in neotropical anurans from agroecosystems

Sperm morphology and testicular histology of the polyandric species Leptodactylus podicipinus (Anura: Leptodactylidae) from an urban environment

“…The results regarding the locular area of L. podicipinus in an urban environment are unprecedented. Our results indicate that L. podicipinus individuals have a larger locular area than L. macrosternum , Physalaemus cuvieri, Dendropsophus minutus, and Boana albopunctata (Rezende et al, 2021) individuals, which suggests interspecific variation in testicular parameters. However, all of these species have been studied in an environment with water stress (Chaves, Moura, et al, or human interference (Rezende et al, 2021).…”

“…Our results indicate that L. podicipinus individuals have a larger locular area than L. macrosternum , Physalaemus cuvieri, Dendropsophus minutus, and Boana albopunctata (Rezende et al, 2021) individuals, which suggests interspecific variation in testicular parameters. However, all of these species have been studied in an environment with water stress (Chaves, Moura, et al, or human interference (Rezende et al, 2021). The results presented herein, may have been affected by the post-rainy period during which the animals were studied, as the large locular size is associated with the presence of early stage germinative cysts, which are common in the post-reproductive period (Sasso-Cerri et al, 2004) even though L. podicipinus is classified as a species with continuous reproduction (Prado et al, 2000).…”

“…Most anuran species live in shallow waters during their larval stages, a period during which their gonads differ and can be influenced by the environment (Rezende et al, 2021; Smits et al, 2014). In addition to natural environmental factors, such as temperature and humidity, anthropogenic activities in reproductive environments or their surroundings can have diversified effects on the development of these animals (Borges et al, 2019; Lambert et al, 2015; Rezende et al, 2021; Smits et al, 2014).…”

“…The environmental and behavioral factors affecting anurans can also influence the spermatogenic process, both in terms of the variation of certain cell types during the year and in terms of the variation of germinal organization in the testes observed among species (Oliveira & Franco‐Belussi, 2012; Santos et al, 2011). Most anuran species live in shallow waters during their larval stages, a period during which their gonads differ and can be influenced by the environment (Rezende et al, 2021; Smits et al, 2014). In addition to natural environmental factors, such as temperature and humidity, anthropogenic activities in reproductive environments or their surroundings can have diversified effects on the development of these animals (Borges et al, 2019; Lambert et al, 2015; Rezende et al, 2021; Smits et al, 2014).…”

The endocrine disruptor hexachlorobenzene can cause oxidative damage in the testis of mice

“…For each testis, 30 seminiferous tubules were randomly selected. In the thickest and thinnest part of each seminiferous tubule, we determined the number of cellular layers and the thickness, perimeter, area and diameter of the lumen of the seminiferous tubules, as well as its proportion relative to the total area (Rezende et al., 2021; Sen Gupta et al., 2004).…”