Resource availability modulates the effect of body size on reproductive development

Article Microbiology

Population Differences and Host Species Predict Variation in the Diversity of Host-Associated Microbes in Hydra

Jan Taubenheim et al.

Summary: The diversity of host-associated bacterial communities in Hydra in the Central European water bodies is primarily determined by sampling location, with minor effects from host species and reproductive modes.

FRONTIERS IN MICROBIOLOGY (2022)

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Article Biochemistry & Molecular Biology

Phenotypic plasticity rather than genotype drives reproductive choices in Hydra populations

Mate Miklos et al.

Summary: Facultative clonality is associated with complex life cycles where sexual and asexual forms can be exposed to contrasting selection pressures. Studying coexisting sexual and asexual Hydra oligactis polyps, a freshwater cnidarian, we found high relatedness among populations and evidence of hydras spreading through zoochory. Despite no genetic structure with respect to mode of reproduction, the study revealed phenotypic plasticity and cases of apparent sex change within the same clonal lineages.

MOLECULAR ECOLOGY (2021)

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Article Ecology

Experimental manipulation of body size alters life history in hydra

Kha Sach Ngo et al.

Summary: Experimental manipulation of body size in the cnidarian Hydra oligactis revealed that smaller individuals can adjust their life history decisions based on their reduced size, leading to higher post-reproductive survival rates. This suggests that ecological or human-induced changes in body size can have immediate effects on life history and population dynamics.

ECOLOGY LETTERS (2021)

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Article Ecology

Seasonal variation in sexual readiness in a facultatively sexual freshwater cnidarian with diapausing eggs

Jacint Tokolyi et al.

Summary: Facultative sexuality combines clonal propagation with sexual reproduction for adaptation and survival in changing environments. Environmental cues trigger sexual reproduction to ensure timely propagation for offspring survival.

ECOSPHERE (2021)

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Article Zoology