The Pseudobranch Development in Eastern Mosquito Fish Gambusia Holbrooki, Girard 1859 (cyprinodontiformes, Poeciliidae) From Jadiriyah Lake, Baghdad, Iraq
Year: 2025
Type: article
Abstract: The aim of the current investigation is to study the embryogenesis of the pseudobranchia (PB) in the Eastern mosquito fish Gambusia holbrooki, Girard, 1859 (Cyprinodontiformes, Poeciliidae). Histological sections from 2-4 mm long embryos revealed the presumable PB as a cell mass surrounded by a row of squamous cells in the operculum, as well as the formationof cartilage and blood vessels, and the beginning of the formation of its lamellae. In 5-7.75 mm long embryos, a prominent rise appeared in the mass of cells and PB lamellae, along withan increase in melanin deposition around the blood vessels. Moreover, a row of squamous cells encircled the rise from the front and back. At this stage, the parallel arrangement of the cartilage-attached lamellae correlated with increased melanin concentration around the blood vessels. In newborns, the differentiated cells increased similar to that appearing in the adult’s stages.
Institutions: University of Diyala, University of Baghdad
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $200
OpenAlex ID: W4411448480