Histological assessments of female ovaries resulted in minimal pathologies only in the 180 μg/L treatment while male testes exhibited numerous treatment-related pathologies that are consistent with previously reported antiandrogenic effects of prochloraz in other species.
Nemerteans often have numerous temporary gonads (ovaries or testes), forming a row down each side of the body in the mesenchyme.
Nemerteans often have numerous temporary gonads (ovaries or testes), and build temporary gonoducts (ducts from which the ova or sperm are emitted), one per gonad, when the ova and sperm are ready.
In this study, microarray, qRT-PCR and in situ hybridization were used to show numerous differentially expressed genes between testes of Wolbachia-infected and uninfected Drosophila melanogaster larvae.
The testes are composed of numerous thin, tightly coiled tubules known as the seminiferous tubules; the sperm cells are produced within the walls of the tubules.
The male organs consist of testes, from which extend numerous tubules (vasa efferentia) that unite to form a sperm duct (vas deferens); the latter becomes an ejaculatory duct through which sperm are released to the outside.
In mice treated with 5.0 mg T (Fig. 4 E) and the Silastic T implants (Fig. 4 F), numerous elongated spermatids, indistinguishable from the WT testes, were observed in all seminiferous tubule sections.
This favors adaptations in male reproductive physiology, such as the production of more numerous and larger ejaculates (facilitated by larger testes) or faster and more enduring spermatozoa, which increase the likelihood of fertilization by a given male over competitors [ 7].
Many sex-biased genes were restricted to the gonads (3,890 female-biased and 3,298 male-biased) (Welch's two-sample t-test; t2 5 FDR < 0.05; fig. 1 B) and gonadectomized abdomen (2,447 female-biased and 3,181 male-biased) (Welch's two-sample t-test; t3 6 FDR < 0.05; fig. 1 C), which still contained numerous reproductive organs except for the accessory glands, testes, and ovaries.
Testes sections show perfectly normal morphology with numerous mature sperm in the lumen.
