Oogenesis of microlecithal oocytes in the viviparous teleost Heterandria formosa

  title={Oogenesis of microlecithal oocytes in the viviparous teleost Heterandria formosa},
  author={Mari Carmen Uribe and Harry J. Grier},
  journal={Journal of Morphology},
Viviparous teleosts exhibit two patterns of embryonic nutrition: lecithotrophy (when nutrients are derived from yolk that is deposited in the oocyte during oogenesis) and matrotrophy (when nutrients are derived from the maternal blood stream during gestation). Nutrients contained in oocytes of matrotrophic species are not sufficient to support embryonic development until term. The smallest oocytes formed among the viviparous poeciliid fish occur in the least killifish, Heterandria formosa… 
Structures Associated with Oogenesis and Embryonic Development during Intraovarian Gestation in Viviparous Teleosts (Poeciliidae)
The intraovarian gestation of poeciliids involves morphological characteristics associated with the intrafollicular embryogenesis and types of nutrition, such as lecithotrophy and matrotrophy, which are related to maternal tissues to the embryo during gestation.
Proliferation of Oogonia and folliculogenesis in the viviparous teleost Ilyodon whitei (Goodeidae)
Oogonial proliferation and folliculogenesis in I. whitei, where intraovarian gestation follows the maturation and fertilization of oocytes, do not correspond to the late oogenesis, as was observed in oviparous species, but correspond to late gestation, and provides elements for understanding the regulation of the initiation of processes that ultimately result in the origin of the next generation.
Structure of the gonoduct of the viviparous teleost Cnesterodon decemmaculatus (Jenyns, 1842) (Poeciliidae)
The functional morphology of the gonoduct is described in the viviparous teleost Cnesterodon decemmaculatus during non‐gestation (previtellogenesis and viteLLogenesis) and gestation.
Oogenesis: From Oogonia to Ovulation in the Flagfish, Jordanella floridae Goode and Bean, 1879 (Teleostei: Cyprinodontidae)
We provide histological details of the development of oocytes in the cyprinodontid flagfish, Jordanella floridae. There are six stages of oogenesis: Oogonial proliferation, chromatin nucleolus,
Intraovarian Gestation in Viviparous Teleosts: Unique Type of Gestation among Vertebrates
The focus of this revision compares the general and specific structural characteristics of the viviparity occurring into the intraovarian gestation in teleosts, defining this reproductive strategy, illustrated in this review with histological material in a poeciliid, of the species Poecilia latipinna, and in a goodeid,of the species Xenotoca eiseni.
Insemination, intrafollicular fertilization and development of the fertilization plug during gestation in Heterandria formosa (Poeciliidae)
The results of the present study provide evidence that both epithelia open at the distal end of the delle, this morphological change allow that the spermatozoa to make contact with the zona pellucida of the oocyte, to form the fertilization plug that persists throughout gestation.
Ovarian structure and oogenesis of the extremophile viviparous teleost Poecilia mexicana (Poeciliidae) from an active sulfur spring cave in Southern Mexico
The ovary and oogenesis of Poecilia mexicana are similar to these seen in other poeciliids, but the authors found frequent atretic follicles, melanomacrophage centers, reduced fecundity and increased of offspring size.
Superfetation in the viviparous fish Heterandria formosa (Poeciliidae)
Results indicate that H. formosa can gestate up to seven broods at the same time and morphologically define the degree of superfetation through two procedures: histological analysis of entire ovaries in gestation and dissection of visible embryos and the histologicalAnalysis of the remaining ovarian tissue.
Gonad morphology, gametogenesis, and reproductive modes in fishes of the tribe Starksiini (Teleostei, Blenniiformes)
Although many of these features are seen in the internally fertilizing clinid blennies, starksiins differ in retaining the testicular gland typical of labrisomids and in lacking sperm packaging typical of other internal fertilizing teleosts.
Functional morphology of the gonoduct of the viviparous teleost Poeciliopsis gracilis (Heckel, 1848) (Poeciliidae)
This study tests the hypothesis that the gonoduct functions as a barrier between the germinal zone and the exterior and shows that this part of the ovary has an essential role in the reproduction of teleosts.


The follicular placenta of the viviparous fish, Heterandria formosa. I. Ultrastructure and development of the embryonic absorptive surface
It is postulate that before the definitive epidermis differentiates, the entire embryonic surface constitutes the embryonic component of the follicular placenta and the absorptive surface epithelium appears to be the principle embryonic adaptation for maternal‐embryonic nutrient uptake in H. formosa.
Follicular placenta of the viviparous fish, Heterandria formosa: II. Ultrastructure and development of the follicular epithelium
These ultrastructural features are postulate to be specializations for maternal‐embryonic nutrient transfer and that the egg envelope, follicular epithelium, and underlying capillary network form the maternal component of the follicular placenta.
The fertilized egg of the viviparous poeciliid Heterandria formosa is minute and is made up almost entirely of a single large oil globule, which permits the mother to contribute nearly all of the raw materials for growth and development of the embryo after the egg has been fertilized.
Memoirs: Observation on the Breeding and Development of the viviparous fish, Heterandria formosa
The breeding habits of Heterandria formosa in an aquarium and the significance of the unusual features in early and late development is discussed and some comparisons are made with the conditions in higher vertebrates.
Cellular Aspects of Oocyte Growth in Teleosts
Current understanding of these events is discussed and a new perspective on oocyte staging is presented, based on data indicating that the cellular events of oocyte growth do not sequentially replace one another, but rather are initiated sequentially and remain active throughout oocyte development.
Dynamics of oocyte and embryonic development during ovarian cycle of the viviparous mosquitofish Gambusia affinis
The dynamics of oocyte and embryonic development between two successive parturitions under 16 Light : 8 Dark photoperiod at 25°C is investigated in order to develop criteria for the ovarian cycle in the viviparous mosquitofish Gambusia affinis.
Particularities of reproduction and oogenesis in teleost fish compared to mammals.
  • B. Jalabert
  • Biology
    Reproduction, nutrition, development
  • 2005
Practical applications of some of these particularities result mainly from the external character of the fertilisation process and of embryonic development, which allows manipulating respectively egg chromosome stocks and sex differentiation.
Ultrastructural aspects of oogenesis and oocyte growth in fish and amphibians.
Oogenesis, the early events of primary oocyte growth (meiotic arrest, synapsis, ribosomal gene duplication), and folliculogenesis can be seen to particular advantage in the germinal ridge of the
Germinal epithelium, folliculogenesis, and postovulatory follicles in ovaries of rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) (Teleostei, protacanthopterygii, salmoniformes)
The rainbow trout, Oncorhynchus mykiss (Walbaum, 1792), is a salmoniform fish that spawns once per year. Ripe females that had ovulated naturally, and those induced to ovulate using salmon
The present investigation describes the fine structural changes that occur during proteid yolk formation in the developing oocytes of the guppy, an ovoviviparous teleost, and postulated that these two different micropinocytotic structures are specifically involved with the selective uptake of dissimilar extracellular proteid materials.