Discharge of municipal wastewater promotes the entry of diverse oestrogenic compounds
into the water bodies. This complex mixture of substances interferes in the steroidogenic …

Alterations to the hydrologic regime downstream from hydroelectric dams include thermal
disturbances which may have an impact on the reproductive success of fish. In order to …

The gonadal development of the characin Astyanax aff. bimaculatus from Funil Reservoir, an
impoundment in the middle reaches of the Paraiba do Sul River in southeastern Brazil was …

Understanding the influence of different temperature conditions on the spermatogenesis is
important for improvement of the fish aquaculture. This study evaluated the influence of low …

In fishes, gonad morphology is an important parameter to understand the reproductive
biology, phylogenetic relationships and systematic studies. The main objective of this study …

In this study, we evaluated the morphology and morphometry of the layers that make up the
follicular complex surrounding mature oocytes in the six fish species Auchenipterichthys …

Construction of water diversions in drylands is boosted by increasing demands for
freshwater often due to prolonged droughts. Even though these mega-enterprises result in …

This study shows for the first time the presence of a jelly coat on oocytes of neotropical
Characiformes fish. This structure could be responsible for the adhesiveness of Astyanax …

Spotted knifejaw (Oplegnathus punctatus) is an economically important marine cultured
species exhibiting a unique complex sex chromosome system (X 1 X 1 X 2 X 2 in females …

Organochlorine pesticides (OCPs) are persistent pollutants previously used in agriculture,
known for their ability to bioaccumulate and pose health risks. This study analyzed samples …