Issues
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Cover image
Cover Image
Cover: Photosynthesis is a crucial energy source for photosymbiotic cnidarians that host algae. Lintnerova et al. (jeb247651) observed that the sea anemone Anemonia viridis displays solar tracking behaviour under sunlight. The anemones orient their tentacles towards the sun, facing east at dawn and west at dusk as they track the sun’s relative position through the day – a phenomenon typically observed in plants. This behaviour in anemones is linked to their symbiotic algae, as it ceases when these algae are removed. The findings indicate that algae photosynthesis stimulates anemone solar tracking behaviour through spontaneous signalling between the host and algae. Photo credit: Vengamanaidu Modepalli.
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PERSPECTIVE
Building bridges: allyship as a catalyst for gender diversity and inclusion in experimental biology communities
Summary: Although scientific excellence thrives with gender diversity, achieving gender balance remains a challenge. We propose actionable strategies to further close the gender gap and foster diversity and allyship in academia.
RESEARCH ARTICLES
Distinct morphological drivers of jumping and maneuvering performance in gerbils
Highlighted Article: Analysis of jump force and maneuverability in gerbils shows distinct lower legs contribute more to jump performance and thighs to maneuvering.
ATP and glutamate coordinate contractions in the freshwater sponge Ephydatia muelleri
Summary: Nerveless sponges coordinate a sneeze-like reflex using glutamate and ATP signalling to expel water from the body.
Thyroid hormones reversibly inhibit metamorphic development in ophiuroid larvae
Summary: Thyroid hormones, principally thyroxine, reversibly inhibit metamorphic development in Ophiopholis aculeata larvae (an ophiuroid). This effect is stage-dependent and reversible.
Egg shape and color mediate acceptance thresholds in diverse avian host species with different rates of antiparasitic egg rejection
Summary: Egg shape and color interact to influence egg rejection across bird species, revealing diverse strategies for recognizing parasitic eggs and maintaining nest integrity.
Sexual dimorphism in jump kinematics and choreography in peacock spiders
Summary: High-speed videography reveals sexual dimorphism in the jump kinematics and choreography of the Australian splendid peacock spider, Maratus splendens, which exhibit the fastest acceleration among any known jumping spiders.
Plant-like heliotropism in a photosymbiotic animal
Highlighted Article: The photosymbiotic sea anemone Anemonia viridis exhibits heliotropic behaviour by pointing its tentacles towards the sun and tracking its position throughout the day.
Artificial light at night alters risk-related behaviors of the ground-dwelling isopod Porcellionides pruinosus
Highlighted Article: Artificial light at night increases defensive responses of isopods by altering risk perception.
Effects of oxygen level on thermal tolerance in Amazonian catfishes with bimodal respiration: physiological and behavioural changes
Summary: An examination of how oxygen levels affect the thermal tolerance of Amazonian catfishes, highlighting how different capacities for air breathing influence their ability to cope with hypoxia.
Behavioural responses to acute warming precede critical shifts in the cellular and physiological thermal stress responses in a salmonid fish (brook trout, Salvelinus fontinalis)
Summary: Sub-lethal temperatures can adversely impact an organism. A behavioural agitation response in brook trout may coincide with a shift in the transcriptome response in relation to acute temperature increases.
Elevated developmental temperatures below the lethal limit reduce Aedes aegypti fertility
Summary: Elevated temperatures reduce fertility and affect plastic responses to thermal stress within and across generations of an important mosquito vector, Aedes aegypti.
A comparison of seasonal flexibility in pectoralis muscle fiber type and enzyme activity in migratory and resident sparrow species
Summary: Migratory sparrows exhibit seasonal flexibility in lactate dehydrogenase activity, but not citrate synthase activity, which may be associated with the presence of fast glycolytic muscle fibers in the non-migratory season.
Fatty acid profiles and tolerance to temperature extremes in Daphnia pulex
Summary: Daphnia grown at high temperatures have less eicasapentaenoic acid (EPA) and higher CTmax whereas those raised under lower temperatures have more EPA in their membranes and greater cold tolerance.
Magnetic orientation of marsh warblers (Acrocephalus palustris) and spotted flycatchers (Muscicapa striata) after simulated crossing of the magnetic equator
Summary: Marsh warblers and spotted flycatchers do not reorient after simulated crossing the magnetic equator, indicating species-specific cues in navigation and highlighting the complexity of migratory strategies across bird species.
ECR SPOTLIGHTS
Announcing the 2024 JEB Outstanding Paper Prize shortlist and winner
Every year JEB celebrates early-career researchers through the Outstanding Paper Prize. We recognise the shortlisted ECRS that contributed to 11 remarkable studies published in 2024 and congratulate the winner, Elise Laetz, from University of Groningen. See how else JEB supports and promotes ECRs.
Inside the Intergovernmental Panel on Climate Change with Hans-Otto Pörtner
During the past two decades, Hans-Otto Pörtner has steered climate change policy as a co-Chair of IPCC Working Group II. He tells us about the experience in this Perspective.
Photosynthesis turns symbiotic sea anemone's tentacles toward sun
Snakelocks sea anemones point their tentacles, packed with symbiotic algae, toward the sun so their lodgers can photosynthesize, and now Vengamanaidu Modepalli & colleagues have discovered that photosynthesis by the algae guides their host's tentacles towards the sun.
History of our journals
As our publisher, The Company of Biologists, turns 100 years old, read about JEB’s history and explore the journey of each of our sister journals: Development, Journal of Cell Science, Disease Models & Mechanisms and Biology Open.
