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Koe zwemt 100 kilometer in hoogwater: hoe is dat gelukt?
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Дело о жестоком убийстве младенца взял под контроль глава МВД Бурятии
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Absorbent and yellow and … mobile? Sea sponges on the move in Arctic Ocean
A new study suggests that sea sponges are moving across the seafloor of the Arctic Ocean, which challenges the idea that these creatures are primarily immobile.
Previous research has shown that sponges can make limited movements in a laboratory setting, but this is the first time sea sponge trails have been observed in the ocean and attributed to sponge movement.
The researchers hypothesize that the sponges are moving to find food or disperse juveniles, although further research is needed before conclusions can be drawn.
Sea sponges don’t move. At least, that’s what a lot of people used to think about these aquatic invertebrates. But a new study has upended this assumption, and pushed and prodded scientific thought into a new direction.
W. Scott Young, III, Kay Reynolds, Emily Shepard, Harold Gainer, and Mona Castel
Laboratory of Cell Biology
1, National Institute of Mental Health and Laboratory of Neurochemistry, National Institute of Neurological Disorders and Stroke, National Institutes of Health; and Department of Experimental Zoology, Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Israel
Expression of the rat OT gene in transgenic mice.
A. Immunocytochemical staining of hypothalamic sections through the paraventricular nucleus (PVN) of transgenic (upper pair) and wildtype control (lower pair) mice. The rat transgene construct shown in B was used to generate this transgenic mouse. Only cells in the transgenic mouse PVN could be stained by the rat-specific oxytocin-associated neurophysin antibody (PS 67). The other oxytocin-associated neurophysin antibody (PS 38) which reacted with both rat and mouse neurophysins, stained both PVN sections.