An attempt to search for the common cellular mechanism of ovulation across all metazoans

T Takahashi, K Ogiwara - Reproduction, 2025 - rep.bioscientifica.com
In brief Ovulation, the female reproductive process whereby fertilizable oocytes are released
from a mature ovarian follicle, is widely seen in all animals that sexually reproduce. This …

Infertility in the hyperplasic ovary of freshwater planarians: the role of programmed cell death

AH Harrath, A Semlali, L Mansour, M Ahmed… - Cell and Tissue …, 2014 - Springer
Ex-fissiparous planarians produce infertile cocoons or, in very rare cases, cocoons with very
low fertility. Here, we describe the features of programmed cell death (PCD) occurring in the …

Identification of novel yolk ferritins unique to planarians: planarians supply aluminum rather than iron to vitellaria in egg capsules

O Kawase, H Iwaya, Y Asano, H Inoue, S Kudo… - Cell and Tissue …, 2021 - Springer
All animals, other than Platyhelminthes, produce eggs containing yolk, referred to as
“entolecithal” eggs. However, only Neoophora, in the phylum Platyhelminthes, produce …

Ultrastructural study of oogenesis in the acotylean Echinoplana celerrima,(Platyhelminthes, Polycladida)

M Gammoudi, RB Ahmed, M Ahmed, SR Sayed… - Zoologischer Anzeiger-A …, 2016 - Elsevier
Here, the ultrastructure of the female gonad of the marine polyclad Echinoplana celerrima
was investigated using both light and electron microscopy. The female gonads are …

Population and reproductive patterns of the Neotropical planarian Girardia capacivasa (Platyhelminthes, Tricladida), and the influence of seasonality on its life history

ML Francavilla, L Negrete, KD Colpo, F Brusa - Zoologischer Anzeiger, 2018 - Elsevier
The biology of Neotropical freshwater planarians (Platyhelminthes) is almost unknown
compared with that of their Holarctic relatives. In this paper, we 1) studied the sequence of …

[HTML][HTML] Investigation of the ultrastructure of Dendrocoelum constrictum (Platyhelminthes, Tricladida) spermatogenesis and mature spermatozoa

AH Harrath, M Gammoudi, L Mansour, M Ahmed… - Comptes Rendus …, 2014 - Elsevier
To add to our understanding of dendrocoelid spermatozoa and to describe additional
phylogenetic characters, the ultrastructure of the testis was investigated in the subterranean …

Ultrastructural and cytochemical aspects of the germarium and the vitellarium in Syndesmis patagonica (Platyhelminthes, Rhabdocoela, Umagillidae)

A Falleni, P Lucchesi, C Ghezzani… - Journal of …, 2014 - Wiley Online Library
The cytoarchitecture of the female gonad of the endosymbiont umagillid Syndesmis
patagonica has been investigated using electron microscopy and cytochemical techniques …

[HTML][HTML] Updated inventory and distribution of free-living flatworms from Tunisian waters

M Gammoudi, M Garbouj, B Egger, S Tekaya - Zootaxa, 2017 - mapress.com
Records of free-living flatworms (turbellarians) from Tunisian waters are scattered. Based on
new material and published accounts, an annotated checklist of free-living flatworm species …

[PDF][PDF] Abdel Halim Harrath, Abdelhabib Semlali, Lamjed Mansour, Mukhtar Ahmed, Alexander V. Sirotkin, Suliman

Y Al Omar, M Arfah - academia.edu
Ex-fissiparous planarians produce infertile cocoons or, in very rare cases, cocoons with very
low fertility. Here, we describe the features of programmed cell death (PCD) occurring in the …