Piter Boll

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  • August 19, 2016
  • 07:00 AM
  • 102 views

Friday Fellow: Asian Pigeonwing

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Today’s Friday Fellow is a creeping (but not creepy) plant with nice deep blue flowers shaped like a human female genitalia. Yeah, you read that right. Its scientific name is Clitoria ternatea, the genus name being a … Continue reading →... Read more »

  • August 12, 2016
  • 07:00 AM
  • 23 views

Friday Fellow: Jataí Bee

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Certainly the most widespread, adaptable and well-known honey-producing bee is Apis melifera, commonly known as honeybee for obvious reasons. But there are a lot of other honey makers all over the world. Today I’m going to present … Continue reading →... Read more »

  • August 5, 2016
  • 07:00 AM
  • 192 views

Friday Fellow: Beggar’s tick

by Piter Boll in Earthling Nature

by Piter Kehoma Boll What if the cure for cancer has been living in your garden all this time and you have been trying to get rid of it because it is an annoying weed? I cannot assure you that … Continue reading →... Read more »

Chiang, L., Chang, J., Chen, C., Ng, L., & Lin, C. (2003) Anti-Herpes Simplex Virus Activity of Bidens pilosa and Houttuynia cordata. The American Journal of Chinese Medicine, 31(03), 355-362. DOI: 10.1142/S0192415X03001090  

Kviecinski, M., Felipe, K., Schoenfelder, T., de Lemos Wiese, L., Rossi, M., Gonçalez, E., Felicio, J., Filho, D., & Pedrosa, R. (2008) Study of the antitumor potential of Bidens pilosa (Asteraceae) used in Brazilian folk medicine. Journal of Ethnopharmacology, 117(1), 69-75. DOI: 10.1016/j.jep.2008.01.017  

  • August 2, 2016
  • 08:07 PM
  • 195 views

Gender Conflict: Who’s the man in the relationship?

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Everyone with some sort of knowledge on evolution have heard of sexual conflict, how males and females have different interests during reproduction, and sexual selection, i.e., how one sex can influence the evolution of the other. … Continue reading →... Read more »

Janicke, T., Marie-Orleach, L., De Mulder, K., Berezikov, E., Ladurner, P., Vizoso, D., & Schärer, L. (2013) SEX ALLOCATION ADJUSTMENT TO MATING GROUP SIZE IN A SIMULTANEOUS HERMAPHRODITE. Evolution, 67(11), 3233-3242. DOI: 10.1111/evo.12189  

Leonard, J. (1990) The Hermaphrodite's Dilemma. Journal of Theoretical Biology, 147(3), 361-371. DOI: 10.1016/S0022-5193(05)80493-X  

Schärer, L., Littlewood, D., Waeschenbach, A., Yoshida, W., & Vizoso, D. (2011) Mating behavior and the evolution of sperm design. Proceedings of the National Academy of Sciences, 108(4), 1490-1495. DOI: 10.1073/pnas.1013892108  

Schärer, L., Janicke, T., & Ramm, S. (2015) Sexual Conflict in Hermaphrodites. Cold Spring Harbor Perspectives in Biology, 7(1). DOI: 10.1101/cshperspect.a017673  

  • July 29, 2016
  • 08:00 AM
  • 182 views

Friday Fellow: Royal sea star

by Piter Boll in Earthling Nature

by Piter Kehoma Boll In order to celebrate the 5oth Friday Fellow, which was posted today, I decided to bring you an extra Friday Fellow! Afterall, there are plenty of interesting lifeforms to be shown. As I have never presented … Continue reading →... Read more »

  • July 29, 2016
  • 07:00 AM
  • 213 views

Friday Fellow: Cute bee fly

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Recently the appearance of a new pokémon, Cutiefly, has brought a lot of attention to the real world species in which it is based. So why not bring it to Friday Fellow so that you may … Continue reading →... Read more »

  • July 7, 2016
  • 02:44 PM
  • 285 views

Biological fight: kites, mites, quite bright plights

by Piter Boll in Earthling Nature

by Piter Kehoma Boll A recently described fossil from the Silurian Herefordshire Lagerstätte in the United Kingdom has called much attention. The appearance of the creature was build by scanning the rock and creating a 3D reconstruction of the fossil. … Continue reading →... Read more »

Briggs, D., Siveter, D., Siveter, D., Sutton, M., & Legg, D. (2016) Tiny individuals attached to a new Silurian arthropod suggest a unique mode of brood care. Proceedings of the National Academy of Sciences, 113(16), 4410-4415. DOI: 10.1073/pnas.1600489113  

Briggs, D., Siveter, D., Siveter, D., Sutton, M., & Legg, D. (2016) Reply to Piper: Aquilonifer’s kites are not mites . Proceedings of the National Academy of Sciences, 113(24). DOI: 10.1073/pnas.1606265113  

  • June 20, 2016
  • 12:26 AM
  • 216 views

The fabulous taxonomic adventure of the genus Geoplana

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Freshwater planarians are relatively well-known as those cute arrow-shaped cockeyed animals. Land planarians are far away from having all the fame of their aquatic cousins and most people do not even know that they exist. Maybe … Continue reading →... Read more »

  • May 31, 2016
  • 11:30 PM
  • 354 views

42: the answer to life, the universe and everything (i.e., consciousness)

by Piter Boll in Earthling Nature

by Piter Kehoma Boll In his work  “The Hitchhiker’s Guide to the Galaxy”, Douglas Adams defined that the answer to life, the universe and everything is 42. Now a group of scientists measured glucose metabolism in brains in a resting … Continue reading →... Read more »

Stender, J., Mortensen, K., Thibaut, A., Darkner, S., Laureys, S., Gjedde, A., & Kupers, R. (2016) The Minimal Energetic Requirement of Sustained Awareness after Brain Injury. Current Biology. DOI: 10.1016/j.cub.2016.04.024  

  • May 26, 2016
  • 11:54 AM
  • 353 views

Male dragonflies are not as violent as thought

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Males and females are defined by their gametes. Males have tiny, usually mobile gametes, while females have very large gametes that usually do not move. This means that females produce less gametes, but put a lot … Continue reading →... Read more »

Chapman, T., Arnqvist, G., Bangham, J., & Rowe, L. (2003) Sexual conflict. Trends in Ecology , 18(1), 41-47. DOI: 10.1016/S0169-5347(02)00004-6  

Córdoba-Aguilar, A., Vrech, D., Rivas, M., Nava-Bolaños, A., González-Tokman, D., & González-Soriano, E. (2014) Allometry of Male Grasping Apparatus in Odonates Does Not Suggest Physical Coercion of Females. Journal of Insect Behavior, 28(1), 15-25. DOI: 10.1007/s10905-014-9477-x  

  • February 1, 2016
  • 03:59 PM
  • 539 views

The tegu lizard and the origin of warm-blooded animals

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Warm blood is the popular way to refer to endothermy, the ability that certain animals have to maintain a high body temperature by the use of heat generated via metabolism, especially in internal organs. Mammals and birds … Continue reading →... Read more »

  • January 25, 2016
  • 11:52 AM
  • 619 views

Zika virus and the negligence towards health research in poor countries

by Piter Boll in Earthling Nature

by Piter Kehoma Boll About a year ago, almost nobody on the whole world was aware of the existence of a virus named Zika virus and the illness it may cause in humans, the Zika fever or Zika disease. But … Continue reading →... Read more »

  • January 17, 2016
  • 08:00 AM
  • 428 views

The blacker the better… especially in Chernobyl

by Piter Boll in Earthling Nature

by Piter Kehoma Boll We all know that plants use chlorophyll and other pigments to harvest energy from light and store it in synthesized molecules, a phenomenon called photosynthesis. It’s chlorophyll that makes plants (all well as some bacteria and … Continue reading →... Read more »

  • January 10, 2016
  • 07:00 AM
  • 496 views

Endosperm: the pivot of the sexual conflict in flowering plants

by Piter Boll in Earthling Nature

by Piter Kehoma Boll The theory of sexual selection, based on the idea that there are conflict of interests between males and females, is quite recognized, but almost entirely focused on animals, especially dioecious animals, i.e., animals in which males … Continue reading →... Read more »

Maruyama, D., Hamamura, Y., Takeuchi, H., Susaki, D., Nishimaki, M., Kurihara, D., Kasahara, R., & Higashiyama, T. (2013) Independent Control by Each Female Gamete Prevents the Attraction of Multiple Pollen Tubes. Developmental Cell, 25(3), 317-323. DOI: 10.1016/j.devcel.2013.03.013  

Schärer, L., Janicke, T., & Ramm, S. (2015) Sexual Conflict in Hermaphrodites. Cold Spring Harbor Perspectives in Biology, 7(1). DOI: 10.1101/cshperspect.a017673  

  • May 1, 2015
  • 07:00 AM
  • 267 views

Biological fight: the case of artificial stimuli in behavior research

by Piter Boll in Earthling Nature

by Piter Kehoma Boll The study of animal behavior is an important approach to understand several aspects on the ecology and the evolution of living beings, both from the analyzed animals themselves and the species with which they interact. For … Continue reading →... Read more »

  • January 30, 2015
  • 07:00 AM
  • 650 views

Friday Fellow: ‘Orange Jaguar Snail’

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Last week I introduced a land planarian that feeds on land snails, Obama ladislavii, or, as I called it, the Ladislau’s flatworm. Therefore, today, I thought it would be great to present a similar situation occurring … Continue reading →... Read more »

  • January 23, 2015
  • 01:21 PM
  • 319 views

Sexta Selvagem: “Planária-de-Ladislau”

by Piter Boll in Natureza Terraquea

por Piter Kehoma Boll Hoje apresentarei a vocês outra planária terrestre, e uma que eu particularmente gosto. Seu nome binomial é Obama ladislavii (antigamente Geoplana ladislavii) e, como a maioria das planárias terrestres, ela não tem um nome popular, apesar … Continuar lendo →... Read more »

  • January 23, 2015
  • 01:21 PM
  • 819 views

Friday Fellow: ‘Ladislau’s Flatworm’

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Friday fellow is back! After almost a year, I decided to go on with it. Actually, I interrupted it because of several other activities there were requiring my attention. Now let’s move on! Today I will … Continue reading →... Read more »

  • January 14, 2015
  • 06:18 PM
  • 726 views

Pooping to evolve: how feces allowed us to exist

by Piter Boll in Earthling Nature

by Piter Kehoma Boll Billions of years ago, when the first lifeforms appeared on Earth, our planet was very different from what it is today. Oxygen, so essential for our survival, was not present in the atmosphere. Thanks to the … Continue reading →... Read more »

Holland, H. (2006) The oxygenation of the atmosphere and oceans. Philosophical Transactions of the Royal Society B: Biological Sciences, 361(1470), 903-915. DOI: 10.1098/rstb.2006.1838  

Turner, J. T. (2002) Zooplankton fecal pellets, marine snow and sinking phytoplankton blooms. Aquatic Microbial Ecology, 57-102. info:/

  • July 14, 2014
  • 05:58 PM
  • 206 views

A abelha poliglota

by Piter Boll in Natureza Terraquea

por Piter Kehoma Boll Comunicação é essencial para humanos, e também é para outros animais que vivem em grupos. Um fato interessante é que, mesmo que humanos modernos somente tenham surgido cerca de 200 mil anos atrás, o número de línguas … Continuar lendo →... Read more »

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