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Freelance science writer Matt Soniak writes about the behavior and ecology of predatory animals and their prey.
Matt Soniak
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by Matt Soniak in mattsoniak.com
One May morning in 2009, a group of white-faced capuchins were foraging on a hillside on Barro Colorado Island, Panama. Two researchers from the Smithsonian Tropical Research Institute, Anyuri González and Lucia Tórrez, were watching the group from nearby, but when one of the monkeys started shrieking, they realized they weren’t the only voyeurs. The [...]... Read more »
S. Boinski. (1988) Use of a Club by a Wild White-Faced Capuchin (Cebus capucinus) To Attack a Venomous Snake (Bothrops asper) . American Journal of Primatology, 14(2), 177-179. DOI: 10.1002/ajp.1350140208
Tórrez, L., Robles, N., González, A., & Crofoot, M. (2012) Risky Business? Lethal Attack by a Jaguar Sheds Light on the Costs of Predator Mobbing for Capuchins (Cebus capucinus). International Journal of Primatology, 33(2), 440-446. DOI: 10.1007/s10764-012-9588-1
Dugatkin, L., & Godin, J. (1992) Prey approaching predators: a cost-benefitperspective. Ann. Zool. Fennici, 233-252. info:/
Lloyd, E., Kreetiyutanont, K., Prabnasuk, J., Grassman, L., & Borries, C. (2006) Observation of Phayre's leaf monkeys mobbing a clouded leopard at Phu Khieo Wildlife Sanctuary (Thailand) . Mammalia, 70(1/2), 158-159. DOI: 10.1515/MAMM.2006.028
by Matt Soniak in mattsoniak.com
One of the unspoken rules of slasher movies is that sex means death. Teen hookups are like a siren song to B-movie killers, and as soon as a pretty, young supporting character loses her virginity, she loses her head. A new study shows that sex might also be a death sentence for some flies, as [...]... Read more »
Björn M. Siemers, Eva Kriner, Ingrid Kaipf, Matthias Simon and Stefan Greif. (2012) Bats eavesdrop on the sound of copulating flies . Current Biology, 22(14), 563-564. DOI: 10.1016/j.cub.2012.06.030
by Matt Soniak in mattsoniak.com
When the sun goes down in the subtropical forests of Puerto Rico, hundreds of thousands of bats emerge from the caves that stud the island’s northern end. After a day of sleeping, the animals are ready for a hard day’s night of hunting insects. For some of them, though, there will be no feast of [...]... Read more »
Rodriguez-Duran, A. (1996) Foraging Ecology of the Puerto Rican Boa (Epicrates inornatus): Bat Predation, Carrion Feeding, and Piracy. Journal of Herpetology, 30(4), 533. DOI: 10.2307/1565698
by Matt Soniak in mattsoniak.com
All over the world, the expansion of urban areas and other human activities has pulled the natural prey base out from under many ecosystems and brought large predators in close contact with people and the resources they can provide – livestock, garbage, unattended pets, etc.. Many predators will take advantage of these food sources, often [...]... Read more »
Yirga, G., De Iongh, H., Leirs, H., Gebrihiwot, K., Deckers, J., & Bauer, H. (2012) Adaptability of large carnivores to changing anthropogenic food sources: diet change of spotted hyena (Crocuta crocuta) during Christian fasting period in northern Ethiopia. Journal of Animal Ecology. DOI: 10.1111/j.1365-2656.2012.01977.x
by Matt Soniak in mattsoniak.com
With their long, serrated snouts, the sawfish might strike you as a little like aquatic versions of Leatherface. Scientists used to think the two were behaviorally comparable: sluggish and maybe a little dimwitted, just waving their saw around blindly and waiting for something to run into it. New research by Barbara Wueringer and colleagues from [...]... Read more »
Barbara E. Wueringer, Lyle Squire, Stephen M. Kajiura, Nathan S. Hart, & Shaun P. Collin. (2012) The function of the sawfish's saw . Current Biology, 22(5), 150-151. info:/10.1016/j.cub.2012.01.055
by Matt Soniak in mattsoniak.com
In pre-colonial Mexico, the winged serpent Quetzacoatl was worshipped as a god. In modern-day Texas, rattlers are regularly fried and eaten. And in Pennsylvania, the snakes at the Philadelphia Zoo’s reptile house have quietly gone about their business while my girlfriend stood in the corner, eyes squeezed shut, shaking with fear. People’s feelings toward, and [...]... Read more »
Headland TN, & Greene HW. (2011) Hunter-gatherers and other primates as prey, predators, and competitors of snakes. Proceedings of the National Academy of Sciences of the United States of America. PMID: 22160702
by Matt Soniak in mattsoniak.com
While they’re less likely to Wall Street than a barn upstate, bats are as concerned as we are about the economy. Their economy revolves around energy instead of money, though, and a problem on the balance sheet can be a matter of life and death. If they spend more energy catching a meal than that [...]... Read more »
Koselj K, Schnitzler HU, & Siemers BM. (2011) Horseshoe bats make adaptive prey-selection decisions, informed by echo cues. Proceedings. Biological sciences / The Royal Society, 278(1721), 3034-41. PMID: 21367788
Jones, G. (1990) Prey Selection by the Greater Horseshoe Bat (Rhinolophus ferrumequinum): Optimal Foraging by Echolocation?. The Journal of Animal Ecology, 59(2), 587. DOI: 10.2307/4882
Salvatore J. Agosta, David Morton, & Kellie M. Kuhn. (2003) Feeding ecology of the bat Eptesicus fuscus: ‘preferred’ prey abundance as one factor influencing prey selection and diet breadth . Journal of Zoology , 260(2), 169-177. info:/10.1017/S0952836903003601
by Matt Soniak in mattsoniak.com
Orb-weaving spiders are those spiders that build the spiral wheel-shaped webs that we often tend to think of as the Platonic ideal of spider webs. The ones you find draped between two dewy branches in a sun-dappled meadow, spider sitting in the dead center lying in wait for hapless flys and other insects to collide [...]... Read more »
André Walter, & Mark A. Elgar. (2011) Signals for damage control: web decorations in Argiope keyserlingi (Araneae: Araneidae). BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY. info:/10.1007/s00265-011-1200-8
by Matt Soniak in mattsoniak.com
On the wide, open plains of the American West, it’s more than the buffalo and the antelope that roam. Mormon crickets (Anabrus simplex) also sweep across the land in huge migratory swarms that can stretch six miles long and three miles wide. The crickets (a misnomer, they’re actually flightless katydids) can march up to a [...]... Read more »
Bazazi S, Ioannou CC, Simpson SJ, Sword GA, Torney CJ, Lorch PD, & Couzin ID. (2010) The social context of cannibalism in migratory bands of the Mormon cricket. PloS one, 5(12). PMID: 21179402
Bazazi S, Buhl J, Hale JJ, Anstey ML, Sword GA, Simpson SJ, & Couzin ID. (2008) Collective motion and cannibalism in locust migratory bands. Current biology : CB, 18(10), 735-9. PMID: 18472424
Sword GA, Lorch PD, & Gwynne DT. (2005) Insect behaviour: migratory bands give crickets protection. Nature, 433(7027), 703. PMID: 15716941
by Matt Soniak in mattsoniak.com
As a rule, all mammals have the same number of vertebrae in their necks, regardless of their necks’ length. Among other animals, like birds, reptiles and amphibians, there’s a little more variety: the long, slender necks of swans have 22-25 vertebrae, while bullfrogs’ necks have just one. Mammals, though – whether they’re a Kitti’s Hog-nosed [...]... Read more »
Varela-Lasheras I, Bakker AJ, van der Mije SD, Metz JA, van Alphen J, & Galis F. (2011) Breaking evolutionary and pleiotropic constraints in mammals. On sloths, manatees and homeotic mutations. EvoDevo, 2(1), 11. PMID: 21548920
by Matt Soniak in mattsoniak.com
For baboons, running away from home is something a boy is expected to do. Most baboon species rely on young males leaving the social group they’re born into and starting or joining another group to disperse genes and ensure diversity. In one species, though, the hamadryas baboon (Papio hamadryas) of northeast Africa, genetic evidence suggests [...]... Read more »
Pines M, & Swedell L. (2011) Not without a fair fight: failed abductions of females in wild hamadryas baboons. Primates; journal of primatology. PMID: 21359653
by Matt Soniak in mattsoniak.com
A lot of people mistake harvestmen for spiders, but there are two big differences between the two orders of arachnids. One, harvestmen do not scare the living shit out of me and I do not need to my girlfriend to kill any that wander into our house. Two, the eight-legged freaks commonly called daddy longlegs [...]... Read more »
Souza, E., & Willemart, R. (2011) Harvest-ironman: heavy armature, and not its defensive secretions, protects a harvestman against a spider. Animal Behaviour, 81(1), 127-133. DOI: 10.1016/j.anbehav.2010.09.023
Willemart, R., & Pellegatti-Franco, F. (2006) THE SPIDER ENOPLOCTENUS CYCLOTHORAX (ARANEAE, CTENIDAE) AVOIDS PREYING ON THE HARVESTMAN MISCHONYX CUSPIDATUS (OPILIONES, GONYLEPTIDAE). Journal of Arachnology, 34(3), 649-652. DOI: 10.1636/S05-70.1
by Matt Soniak in mattsoniak.com
The “Ooooooohhhh!” a human being cries out when they stub their toe might sound a pretty similar to the “Ooooooohhhh!” they cry out at the end of their mating ritual, but they two calls are different. An important part of human-to-human communication is our ability to extract information from context-specific calls and integrate it with [...]... Read more »
Slocombe KE, Kaller T, Call J, & Zuberbühler K. (2010) Chimpanzees extract social information from agonistic screams. PloS one, 5(7). PMID: 20644722
Slocombe, K., Townsend, S., & Zuberbühler, K. (2008) Wild chimpanzees (Pan troglodytes schweinfurthii) distinguish between different scream types: evidence from a playback study. Animal Cognition, 12(3), 441-449. DOI: 10.1007/s10071-008-0204-x
by Matt Soniak in mattsoniak.com
One if by land, and two if by sea/And I on the opposite shore will be/Ready to ride and spread the alarm/Through every Middlesex village and farm/For the country folk to be up and to arm. On April 18, 1775, Paul Revere told three Boston patriots to hang two lanterns in the steeple of the city’s Old North [...]... Read more »
Mateo JM. (2010) Alarm calls elicit predator-specific physiological responses. Biology letters, 6(5), 623-5. PMID: 20236965
Mateo JM. (1996) Early auditory experience and the ontogeny of alarm-call discrimination in Belding's ground squirrels (Spermophilus beldingi). Journal of comparative psychology (Washington, D.C. : 1983), 110(2), 115-24. PMID: 8681525
by Matt Soniak in mattsoniak.com
Mantis shrimp are, ounce for ounce, some of the most fearsome predators that you can pull out of the ocean. The marine crustaceans of the order Stomatopoda (neither shrimp nor mantids, they got the name because of their physical resemblance to both) are tiny and unassuming, but can use their front claws to attack with incredible [...]... Read more »
Taylor JR, & Patek SN. (2010) Ritualized fighting and biological armor: the impact mechanics of the mantis shrimp's telson. The Journal of experimental biology, 213(Pt 20), 3496-504. PMID: 20889830
Patek, S., Korff, W., & Caldwell, R. (2004) Biomechanics: Deadly strike mechanism of a mantis shrimp. Nature, 428(6985), 819-820. DOI: 10.1038/428819a
by Matt Soniak in mattsoniak.com
It’s a love story as old as time itself: boy Asian corn borer moth (Ostrinia furnacalis) meets girl Asian corn borer moth; girl secretes sex pheromones; boy goes through his courtship ritual, a little song-and-dance routine where he rubs his wings against his thorax to produce a soft, whispering sound. It’s a sweet little love [...]... Read more »
Nakano, R., Takanashi, T., Skals, N., Surlykke, A., & Ishikawa, Y. (2010) Ultrasonic courtship songs of male Asian corn borer moths assist copulation attempts by making the females motionless. Physiological Entomology, 35(1), 76-81. DOI: 10.1111/j.1365-3032.2009.00712.x
Nakano R, Takanashi T, Skals N, Surlykke A, & Ishikawa Y. (2010) To females of a noctuid moth, male courtship songs are nothing more than bat echolocation calls. Biology letters, 6(5), 582-4. PMID: 20219743
by Matt Soniak in mattsoniak.com
It wasn’t more than a few decades ago that stress was seen merely as an unpleasant mental state or a mild irritation. Stanford neurologist Robert Sapolsky recognized early on, though, that it had real, significant impact on one’s health. In a Wired piece from last summer, “Under Pressure,” Jonah Lehrer relates how Sapolsky he first [...]... Read more »
Muehlenbein MP, & Watts DP. (2010) The costs of dominance: testosterone, cortisol and intestinal parasites in wild male chimpanzees. BioPsychoSocial medicine, 4(1), 21. PMID: 21143892
by Matt Soniak in mattsoniak.com
There are some 1,400 described species of scorpion in the world, and while only 25 of those have proven they can take down a human being with their venom, many more of them can easily injure and kill smaller creatures. Given that, you’d expect scorpions to be important predators in desert food webs, but you [...]... Read more »
Holderied M, Korine C, & Moritz T. (2010) Hemprich's long-eared bat (Otonycteris hemprichii) as a predator of scorpions: whispering echolocation, passive gleaning and prey selection. Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology. PMID: 21086132
by Matt Soniak in mattsoniak.com
“I speak, breathe and eat but I am dead,” said the patient. The man, a 32-year-old high school dropout, laborer and family man, had been brought to Kerman Psychiatric Hospital in southern Iran by his relatives after he refused to go to work for two straight weeks. Two years before that, the symptoms started. At [...]... Read more »
Nejad AG, & Toofani K. (2005) Co-existence of lycanthropy and Cotard's syndrome in a single case. Acta psychiatrica Scandinavica, 111(3), 250. PMID: 15701110
by Matt Soniak in mattsoniak.com
Ed Yong recently reposted his fantastic 2008 post on assassin bug camouflage to keep us entertained while he’s away. I covered the same paper on an old incarnation of my blog, and can’t resist joining in on the reposting fun. Kevin Zelnio of Deep Sea News also has a post about it.
Remember that scene [...]... Read more »
Jackson, R., & Pollard, S. (2007) Bugs with backpacks deter vision-guided predation by jumping spiders. Journal of Zoology, 273(4), 358-363. DOI: 10.1111/j.1469-7998.2007.00335.x
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