2012
DOI: 10.1590/s1679-62252012005000005
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Comparative morphology of gill glands in externally fertilizing and inseminating species of cheirodontine fishes, with implications on the phylogeny of the family Characidae (Actinopterygii: Characiformes)

Abstract: The structure and form of gill gland among inseminating and externally fertilizing species of the Cheirodontinae are described under light microscopy, scanning electron microscopy, and transmission electron microscopy, and compared to other members of the family Characidae. At least one species from thirteen cheirodontine genera were analyzed, totaling seventeen species. Gill glands were found in all analyzed mature males of Cheirodontinae and were always absent in females, being located on the anteriormost po… Show more

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Cited by 13 publications
(26 citation statements)
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“…These preliminary findings suggest that these five genera are more closely related among themselves than to any other stevardiin genus and probably represent a separate clade within the subfamily; however, a more comprehensive analysis of characters is required to confirm this hypothesis. Oliveira et al (2012) state that gill glands were found via histological preparations in mature inseminating males of Monotocheirodon species. No histological sections were conducted in this study to detect the presence of such structures.…”
Section: Discussionmentioning
confidence: 99%
“…These preliminary findings suggest that these five genera are more closely related among themselves than to any other stevardiin genus and probably represent a separate clade within the subfamily; however, a more comprehensive analysis of characters is required to confirm this hypothesis. Oliveira et al (2012) state that gill glands were found via histological preparations in mature inseminating males of Monotocheirodon species. No histological sections were conducted in this study to detect the presence of such structures.…”
Section: Discussionmentioning
confidence: 99%
“…; Oliveira et al . ). The development of such glands probably responds to an increase in testicular hormones and is apparently progressive with age, starting from the anteriormost filaments (Burns and Weitzman ).…”
Section: Introductionmentioning
confidence: 97%
“…Each chamber is limited anterior and posteriorly by gill filaments and laterally by a stratified squamous epithelial tissue (Oliveira et al . ), and it communicates to the exterior through openings in their distal region (Burns and Weitzman ; Bushmann et al . ).…”
Section: Introductionmentioning
confidence: 99%
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