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Cover: The Adelaide rosella (Platycercus elegans adelaidae) is part of a species complex that has highly variable plumage colour, from deep crimson to pale yellow. Theory suggests colour vision co-evolves with plumage coloration and consequently P. elegans would be an ideal candidate for such within-species differences in colour vision, not found hitherto in birds. In preparation for such a test, Knott et al. (pp. 4454−4461) measured retinal photoreceptor spectral sensitivity and sequenced the visual opsin genes from P. e. adelaidae and found some opsins possessed novel extensions, or showed unusual splicing events, not previously observed in any vertebrate opsin. Photo credit: Raoul Ribot.Close Modal
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RESEARCH ARTICLE
Exclusive localization of carbonic anhydrase in bacteriocytes of the deep-sea clam Calyptogena okutanii with thioautotrophic symbiotic bacteria
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INSIDE JEB
OUTSIDE JEB
So long Andy and welcome Monica
We say a fond farewell to Andy Biewener who, after 20 years and steering hundreds of manuscripts through peer review, will be stepping down from his role as JEB Editor. We are delighted to welcome Monica Daley to the team in his place.
Supporting early-career researchers
As a journal published by The Company of Biologists, we champion early-career researchers. Find out more about the practical solutions available to help this vital community navigate the first stages of their careers.
Neuroethology of number sense across the animal kingdom
Andreas Nieder considers the fundamentally different types of brains of diverse and distantly related animal species that give rise to number skills across the animal kingdom.
Hiking trails ideal for sauntering grizzlies
New measurements reveal that grizzly bears use similar amounts of energy as humans when walking and prefer to take routes with a gradient of less than 10%, which explains why they sometimes turn up on human hiking trails that are shallow for our use and are also ideal for grizzlies.
Upcoming grant deadlines
Grants awarded by The Company of Biologists help scientists travel, attend events and host sustainable activities. Make a note of the upcoming application deadlines and find out more about the grants on offer:
Sustainable Conferencing Grants
17 May 2021
Travelling Fellowships
31 May 2021
Scientific Meeting Grants
4 June 2021
