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Comparative morphology of the gonadal structure related to reproductive strategies in six species of neotropical catfishes (Teleostei: Siluriformes) by Rafael Magno Costa Melo; Fábio Pereira Arantes; Yoshimi Sato; José Enemir dos Santos; Elizete Rizzo; Nilo Bazzoli is a Environmental Science article available to read on EtoBox.
What is Comparative morphology of the gonadal structure related to reproductive strategies in six species of neotropical catfishes (Teleostei: Siluriformes) about?
## Abstract We studied the relationship between the morphology of the reproductive system and the reproductive strategies of six neotropical catfishes using macroscopic and microscopic analyses. The reproductive system of the examined Siluriformes showed diversified characteristics, but permitted their being grouped according to three reproductive strategies: pelagic spawning, demersal spawning, and internally fertilizing. The pelagic spawners __Pseudoplatystoma corruscans__ and __Conorhynchos conirostris__ have testes that are characterized by filiform lobes, absence of testicular secretion, full‐grown oocytes of small diameter, thin zona radiata, and cuboidal follicular cells. __Pimelodus maculatus__ is morphologically distinct from the other two pelagic spawners catfishes due to the presence of testicular secretion. The demersal spawners __Lophiosilurus alexandri__ and __Rhinelepis aspera__ possess homogeneous testicular secretion, large mature oocytes, and columnar follicular cells. The most specialized reproductive system was observed in the internally fertilizing __Trachelyopterus galeatus__, which possesses a seminal vesicle accessory to the testes, spermatozoa with elongate
Who reads Comparative morphology of the gonadal structure related to reproductive strategies in six species of neotropical catfishes (Teleostei: Siluriformes)?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Rafael Magno Costa Melo; Fábio Pereira Arantes; Yoshimi Sato; José Enemir dos Santos; Elizete Rizzo; Nilo Bazzoli
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0362-2525)
- Published
- 2011
- Language
- EN
- Field
- Environmental Science (Physical Sciences)