What do bees ‘see’ and how does it inform our understanding of vision?

By Adrian Horridge, F.R.S.

Bees are familiar to all, and tests to discover what they see can be repeated in any temperate part of the world, requiring little basic science but lots of thought to grasp this anti-intuitive but wonderfully adapted newly described visual system. In advance of World Bee Day on the 20th May, I look here at the importance the visual system of the bee, and the journey to establish this understanding.

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Fat cats – what can they tell us about human obesity, and vice versa?

It’s estimated that between a third and two thirds of pet cats are overweight, depending on the assessment method used. Cats suffer from obesity and diabetes mellitus in ways that are very similar to the obesity and type 2 diabetes found in humans. But can these similarities tell us anything useful about how to tackle these problems in cats or in humans?

silver tabby cat lying on green grass
Photo by Pixabay on Pexels.com

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Tourism and animal welfare: a 21st century dilemma

There is a strong link between tourism and animals, whether in zoos, marine parks, or on safari. Tourists encounter animals in many different situations: photo opportunities, street performances, animal rides and specialised ‘sanctuaries’ such as elephant homes and tiger temples. Tourism may benefit wildlife, by funding wildlife animal conservation, as well as providing vital income for local communities, but the exploitation of animals in animal entertainment can be a cruel and degrading experience for intelligent sentient creatures.

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Tourists encounter animals in many different situations

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Four animals and insects that humans can’t live without

Bees

Guest blog by Master Beekeeper ‘in the making’ Greg Long.

When people start to think about the ecosystem and nature as a whole, many don’t fully grasp the importance of relying on other species. Everything on earth is connected, whether we realize it or not. Human survival doesn’t rely on humans alone — the human species depends on tons of other life forms to stay in existence.

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One health – human, animal, environmental and plant health

Do you give advice on poultry SD

Ahead of One Health Day tomorrow (3rd November 2018), Robert Taylor, CABI’s Editorial Director, explores the relationships between human, animal, environmental and plant health…

The ‘One health’ initiative launched in 2007 was designed primarily to break down the barriers between human and veterinary medicine, particularly for dealing with zoonotic diseases. The link between BSE and nvCJD, as well as the threat of new diseases like SARS and threat of old diseases like avian influenza made for a strong case that the health of humans and animals are inter-linked. Since then, ‘One health’ has been expanded to include environmental health as there are many examples of how human activity can harm the health of the environment, and how in turn, a polluted environment adversely affects human health.

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The impact of invasive species on human health

By Giuseppe Mazza and Elena Tricarico, Università degli Studi di Firenze, Italy

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Mosquitoes are often the first species we think of when it comes to human health

Invasive species are becoming a popular topic in newspapers: when articles appear, they mainly report the damages invasive species can cause to our ecosystems (e.g. reduction or disappearance of native species as well as habitat modification) or to our economic activities: fishing or boating can be halted by mats of the South American water hyacinth, several insects can affect our agricultural production or new diseases can be transmitted to reared species. However, these species can also heavily affect human health and wellbeing.

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Invasive species: the threat to human health

The damage that invasive species can cause to the environment and the economy are well known, but impacts on human health have been much less analysed. However, invasive species can cause impacts ranging from psychological effects, phobias, discomfort and nuisance to allergies, poisoning, bites, disease and even death. Invasives experts Giuseppe Mazza and Elena Tricarico of the University of Florence, Italy say that in addition to these direct effects, some work in more indirect ways. Humans are menaced by alien invasive species affecting the services provided by ecosystems. “These services are vital to our well-being: changes may decrease the availability of drinking water and of products from fisheries, agriculture and forestry, alter pollination and impoverish culture and recreation,” say Mazza and Tricarico.

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The invasive red swamp crayfish, linked to disease in fishermen (photo by Miluz).

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