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A morpho-histological analysis of the exoskeleton of (Cnidaria, Hydrozoa) reveals insights into the taxonomy of Clathrozoellidae and Hydroidolina.
PeerJ
January 2025
Department of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
The taxonomic complexity of the families Clathrozoidae and Clathrozoellidae, rooted in early 20th-century hydroid descriptions, highlights the need for comprehensive and detailed morphological analyses. This study aimed to elucidate the histology of the polypoid stage of Peña Cantero, Vervoort & Watson, 2003, with a particular emphasis on its exoskeletal structure. Specimens from the National Museum of Natural History were examined histologically using different staining techniques.
View Article and Find Full Text PDFLife Cycle Transitions in the Freshwater Jellyfish .
Biology (Basel)
December 2024
Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA.
is an invasive hydrozoan found globally in freshwater habitats. has a complex life cycle that includes benthic, pelagic, dispersal and dormant stages. The distribution of the medusa (jellyfish) stage has been well documented, but little is known about the other life cycle stages, which are suggested to be more widespread.
View Article and Find Full Text PDFEnvironmental microbial reservoir influences the bacterial communities associated with Hydra oligactis.
Sci Rep
December 2024
MTA-DE "Momentum" Ecology, Evolution & Developmental Biology Research Group, Dept. of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary.
The objective to study the influence of microbiome on host fitness is frequently constrained by spatial and temporal variability of microbial communities. In particular, the environment serves as a dynamic reservoir of microbes that provides potential colonizers for animal microbiomes. In this study, we analyzed the microbiome of Hydra oligactis and corresponding water samples from 15 Hungarian lakes to reveal the contribution of environmental microbiota on host microbiome.
View Article and Find Full Text PDFStochastic morphological swings in regeneration: A manifestation of noisy canalized morphogenesis.
Proc Natl Acad Sci U S A
January 2025
Department of Physics and Network Biology Research Laboratories, Technion-Israel Institute of Technology, Haifa 32000, Israel.
Animal morphogenesis, the development of an organism's body form, is commonly perceived as a directed and almost deterministic process. However, noise and stochastic fluctuations are ubiquitous in biological systems. The questions on the role of fluctuations in morphogenesis and what ensures the robustness of this process under noisy conditions remain elusive.
View Article and Find Full Text PDFDevelopment of novel microsatellite marker sets for 5 common tropical hydrozoan species (Cnidaria: Hydrozoa) from the Southwestern Indian Ocean.
Mol Biol Rep
December 2024
Laboratoire d'Excellence CORAIL, Papetoai, Moorea, French Polynesia.
Background: In the context of global change, coral reefs and their associated biodiversity are under threat. Several conservation strategies using population genetics have been explored to protect them. However, some components of this ecosystem are understudied, such as hydrozoans, an important class of benthic organisms worldwide.
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