Zoology

Conservation

Ecological strategies seek to restore wildlife populations and reverse extinctions

Rewilding and de-extinction represent a new era in ecosystem restoration

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Zoology

Jaguar mates with black jaguar

Jaguars place importance on sounds and smells when mating

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Photolab

Collective Regeneration

Marine organism can regenerate from a single fragment

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Paleontology

Fossil halves separated 90 years ago reveal unknown Jurassic reptile species

Brazilian researcher discovers two parts of the same specimen in museums in Germany and the United Kingdom

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Zoology

Harvestman species has two types of males

Territorial with powerful claws or sneaky and weak, the arachnids have different sexual organs

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Obituary

Zootechnician integrated the science of animal welfare into livestock farming

Mateus Paranhos da Costa devoted his research to balancing livestock productivity with quality of life for animals

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Biochemistry

Marine organism has unknown green photoprotein

Deep-sea discoveries open new biotechnological paths and deepen understanding of forms of bioluminescence

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Ecology

Multicolored birds avoid urban areas

Large cities attract voracious, dull-colored birds and repel small, more colorful ones, impoverishing metropolitan fauna

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Zoology

Solved: the mystery of sex in egg-laying mammals

Platypus sex determined by hormone-derived gene

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Zoology

Fifty-nine snake species in the Pampas

Guide presents 59 snake species found in the Pampas

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Photolab

Distinctive mustache

Parrot snake from the Cerrado distinguished by markings that resemble a black mustache

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Paleontology

Hell ant found in the Brazilian Northeast is the oldest in the world

Insect lived 113 million years ago and had a vertical jaw, unlike current species

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Ecology

Marine animal conservation failures

Global study warns of declining marine animal populations

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Zoology

White-tailed deer populations recover

US deer population grew from 300,000 to 35 million after hunting declined in the twentieth century

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Interview

Regina Macedo: Biologist reformulates view on bird behavior

São Paulo native from UnB who helped revise concepts about sexual selection in the tropics and cooperative breeding has dedicated herself to another passion since last year: painting

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Zoology

Still hunters

Despite having been domesticated, dogs and cats maintain their predatory instinct and pose risks to wildlife

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Ecology

Intense droughts, the greatest enemy of amphibians

Severe droughts have drastically reduced amphibian populations

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Photolab

Short flight

Photo shows newly described insect species with a lifespan shorter than 24 hours

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ETHOLOGY

Morpho butterflies seem to disappear thanks to iridescent blue color

The coloration, present only on the upper surface of the wings, causes a flash that confuses predators, as well as biologists seeking to understand how they became so bright

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Zoology

Climate caused megafauna extinction

Lack of rain accelerated extinction of megafauna in Northeast Brazil

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Biodiversity

The cries of snakes

Female snakes emit high-pitched sounds when threatened

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Zoology

India, home of the tigers

India's wild tiger population doubles in just over a decade

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ECOLOGY

Rodents in the Pantanal use holes dug by armadillos as temporary shelter

Other animals, such as ocelots and foxes, were observed approaching the dens but not entering

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ZOOLOGY

GPS mapping reveals the role of forests in jaguar conservation

Study included 54 jaguars fitted with tracking collars in 12 locations across South America

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Animal behavior

Social isolation leads to disorders

Chimpanzees raised in isolation face challenges in social interaction

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ZOOLOGY

Temperature affects sensory system development in trout

Temperature affects sensory system development in trout

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BOTANY

Plants use pollen bombs to compete for space on hummingbird beaks

Success in competition between male gametes can increase chance of reproduction

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Animal Behavior

Heavy disperser

Manatees are important seed dispersers that help to maintain aquatic vegetation

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Environment

Belo Monte Dam and drought cause the Volta Grande do Xingu region to dry up

Monitoring indicates that low water flow is preventing fish from reproducing and impeding the way of life of Indigenous people and riverside communities

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Evolution

Lice, the origin of the kiss?

Human kissing may have arisen through evolution of a hygiene habit among primates

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