Arxiu d'etiquetes: PhD

Are you thinking about a PhD? The experience of primatologist Mireia Olivé

If you are studying biology maybe you are thinking to continue working in a doctor’s degree. Is it worth it? How much time and effort will you have to dedicate? Know firsthand the experience of writing a thesis and getting a doctor’s degree with this interview with primatologist Mireia Olivé.

THE INTEREST IN PRIMATOLOGY

  • Mireia, thanks to dedicate your time to All You Need Is Biology to share your experience. Let’s start from the beginning: when did you know you wanted to study biology? Why did you choose this degree and not another?

The thing is that the choice was not easy because I have always liked a lot of things and it was difficult to decide. To choose the degree, one of the criteria I took into account was that the field should open doors for a future projects (in a professional way), enabling me to be more interdisciplinary. What finally did tip the scales was the emotional part: it was really motivating to know that, someday, I might know things that I always wondered (in the field of primates, especially).

  • Why did you do a PhD? Did you have a professional future in mind, the opportunity arose without thinking about it..?

It’s funny that I really undertook a doctoral thesis because I had never thought about it. While some friends of mine had no doubts about conducting research, I was involved in other projects that weren’t related to research and I didn’t have in mind taking a PhD. Actually, it was a proposal of my academic mentor from the  Master’s degree in Cognition and Evolution of Primates I had already done. After considering it (and knowing that I could continue working in my other projects), I accepted.

  • On what topic was your thesis? What research did you carry out?

My thesis studied the relationship between hierarchy and grooming in a group of Barbary macaques (Macaca sylvanus). To integrate these two concepts and see how interrelated, the research was focused on several aspects:

  • First; bibliographic, regarding the hierarchy and grooming.
  • Second; on computer models and simulation (I belong to GCAI –Group of Adaptive Behaviour and Interaction-, which studies adaptive behaviour and computational psychology).
  • Third; empirical, observing individuals in a group of macaques.
groomig, macacos de Berbería, macaco de barbería, macaco de Gibraltar, mona rabona
Barbary macaques during grooming. Photo: Mireia Olivé Obradors

WORKING IN THE FIELD

  • Let’s talk about the empirical aspects: in what area did you take out your observations?

The empirical part was a bit difficult to start because we struggled to find a group that was representative enough, since it had to have a minimum of individuals of each gender and age class, and from a particular family of primates. Finally, after several failed attempts (we had already begun observing a group but we had to stop because there were problems with the animals), we chose a group of a French park near Poitiers called La Vallée des Singes, where the Barbary macaques group met all the requirements we had set. In addition, it was a semi-captivity group, which provided many advantages over other options we had already considered.

Barbary macaques on trees at La Vallée des Singes in spring. Photo: Mireia Olivé Obradors
  • So you had to do some research abroad. How do you evaluate the experience?

It was a very interesting experience that allowed me to meet students, technicians and professionals of the “animalier” sector and in the primatology field, to expand the circle of friends and to improve my level of foreign languages

  • Working in the field was very hard?

The fieldwork was very intense, because I wanted to take advantage of my time collecting as much data as I could (even considering further research to develop at the end of the PhD). Going out to observe animals is a task that requires a lot of perseverance and dedication: once the dynamics is established, observations must be maintained in all conditions. This means it had to be done even if it rains; the temperature is below 4° C; on weekdays and on weekends, and at any time of day. The empirical part, however, was the best of the PhD.

El paisaje y las condiciones de observación durante el invierno eran totalmente diferentes. Foto: Mireia Olivé Obradors
The scenery and observing conditions during the winter were totally different. Photo: Mireia Olivé Obradors

 

  • Did you experienced fear at some time?

Usually the sessions were quiet, but twice went pretty scary. The place where the observations were made was directly on the territory of macaques, an extension of 3.3 hectares of forest where the animals were circulating freely. At peak times park staff checked that everything was in order, but I could be on the other side of the territory and I often did not see anyone all day. In the group there were several juvenile females, eager to play and challenging me.

Algunos integrantes del grupo de macacos objeto del estudio. Foto: Mireia Olivé Obradors
Some members of the group of macaques under study. Photo: Mireia Olivé Obradors

Once, I was surrounded by the group of the four youngest females. They approached me and stretched my clothes. I was a bit scared (it was an aggressive way to play). The situation was complex, because at that time I had already been more or less accepted by the group as an observer and I could be quite close to animal. I frightened them to let me go, not only I risked to lose that confidence, and consequently the ability to observe their behavior closely, but at the same time, the group would have attacked me to help the youngest without hesitating (adults are very strong and have very long fangs).

La observación en el hábitat de los animales tiene sus riesgos: hay que conocer perfectamente las pautas de actuación en caso de peligro. Foto: Mireia Olivé Obradors
The observation in the habitat of the animals has its risks: you have to be familiar with the guidelines for action in case of danger. Photo: Mireia Olivé Obradors

TIPS ON PhD

  • Dedication is very big, is it possible to combine the PhD with a job? Can you give an idea to future students how much is the workload?

The workload is heavy, either combining the PhD with a job (which was my case) or doing the thesis exclusively, and perseverance to move forward is necessary. For me it was important not to stop working and continue participating in other projects that were not related to research, so I assumed it would take longer to finish my PhD. Being focused was important to continue working on all fronts

Ejemplo de una sola página de la libreta de campo de Mireia. Después, todos estos datos hay que analizarlas en el momento de redacción de la tesis. Foto: Mireia Olivé Obradors
Example of one page of Mireia’s field notebook. After, all these data must be analyzed at the time of writing of the thesis. Photo: Mireia Olivé Obradors

In that time I got home from work between 5 p.m. and 6 p.m., and then I began to work (either reading articles, studying, writing or doing calculations) until 9-10 p.m. and at weekends I spent between 4 and 6 hours a day. Friends, who worked doing exclusively the thesis at the University, spent about 8 hours every day, Monday through Friday, but this schedules also depended on the stage where they were (the final stage of drafting is far more intense).

  • But it also has its positive side, right?

Of course you have good times! First, you research a topic you are passionate about and you do some discoveries. In addition, you learn, firsthand, what it means to do research, what involves (organization, hypotheses, results).
You also know a lot of people who share the same interests and motivation, and you’re aware of everything happening in your field. You are so up to date and discovering so much about the subject that it ends up being you the one who knows the most: it’s your topic!

Mireia durante la observación del grupo de macacos. Foto: Mireia Olivé Obradors
Mireia during the observation of the macaques group. The empirical part of the study is the best. Photo: Mireia Olivé Obradors
  • Did you ever think about quitting? Why?

Yes. As I said before, it is a long and intense process. In addition, research often do not turn out the results you expect, and you have to go redirecting the situation, raising new hypotheses or approaching it from different points of view. At that moment you have to be able to look a little further: either to the beginning and see where you were and where you are at the time, or trying to see where you go, what you want to end up discovering.

So this is why it is important that you like what you investigate, because it is easy not to get involved and giving up.

  • What encouraged you to go on?

I want to add that beyond this personal motivation, support from family and friends is very important: they are who cheer you up, who encourage you again and again and will continue to encourage you, and when you have hard times, they convince you that your work worths it, and that you  must continue working to go on.

  • Would you repeat the experience?

Yes, I think I would do a PhD again. However, thanks to the experience, I would look at the issue differently, both the thesis content and the personal approach.

  • Finally, can you give some tips to people who want to do a PhD?

I would suggest them to change to another University (different from the one where they have studied the Bachelor’s or Master’s Degree) because it is very interesting to know other ways to work and focus research.

In addition, it is important to choose a topic that really motivates you. During the thesis there are moments of discouragement, when you want to throw it all away (it is inevitable, because it is a task of continuous effort and quite long) but if the subject excites you, it is easier to find energy to continue.

  • Your thesis seems very interesting,  can you give us a link to the publication?

One of the conclusions of my thesis has been the development of indicators that provide insight into the status of a group of Barbary macaques, which may facilitate possible interventions (reintroduction in the natural habitat, migration of individuals).

In this link you can read the summary of the thesis and download it.

Macacos de Berbería. Foto: Mireia Olivé Obradors
Barbary macaques. Photo: Mireia Olivé Obradors

 

Mireia, thank you very much for your time and experience, which will be for sure a good guidance for future researchers.

Thanks to you for giving me the opportunity to publicize the importance of scientific research.

MIREIA QUEROL ALL YOU NEED IS BIOLOGY

Pangolin: poaching is condemning it to extinction

Neither the tiger or elephant or rhino: the most hunted mammals by humans are pangolins, to the point of critically threaten their survival as a species. Discover the only mammal with scales, its current condition and what can we do to prevent the extinction of all species of pangolin in the world.

WHAT IS A PANGOLIN?

manis tricuspis, pangolin, árbol, tree, trepando
Tree pangolin (Phataginus tricuspis). (Photo by Bart Wursten).

The name pangolin (also known as scaly anteater or trenggiling) includes 8 different species distributed by a variety of habitats (tropical rainforests, dry forests, savanna areas, cultivated fields…) in Africa and Asia. They measure between 90 cm and 1.65 m. They are the only family in the order Pholidota: although physically similar, armadillos, sloths and anteaters are not its relatives (order Xenarthra). Most are nocturnal, solitary and shy, so there are still many questions about their biology and behavior in the wild (they don’t usually survive captivity).

MORPHOLOGY

Pangolins are the only mammals with scales: they are made of keratin (like our nails) and give them a look like a pineapple or artichoke. Scales are very sharp and they can move them voluntarily. If pangolins feel threatened hiss and puff, curl into a ball leaving the scales exposed and secrete pestilential acids to ward off predators (tigers, lions, panthers and humans).

leon, leona, pangolin, bola, lion, defensa
An impenetrable defense even to a lioness. (Photo by Holly Cheese)

The claws allow them both climb as digging: terrestrial pangolins hide and breed in underground galleries and arboreal pangolins do the same in hollows on trees. The tail of the tree pangolin is prehensile to attach to the branches. In addition, pangolins are excellent swimmers.
They are mainly bipedal animals: forepaws are so large that force them to walk on its hind legs, with a maximum speed of 5 km/h. Watch a pangolin walking and feeding:

NUTRITION

Pangolin has no teeth and is unable to chew. It feeds on ants and termites, which locates with its powerful sense of smell (the view is underdeveloped) and catch them with its sticky and long tongue (may be longer than the body itself, up to 40 cm). The stones swallowed involuntarily and corneal structures of their stomach help them to crush the exoskeletons of insects. With its powerful claws destroy their nests to access them and avoid their attack plugging his ears and nostrils, besides having an armored eyelid. It is estimated that a pangolin can consume about 70 million insects per year, which makes them important regulators of the population of ants and termites.

lengua, pangolin, tongue
The tongue of the pangolin. (Photo by Wim Vorster).

REPRODUCTION

Pangolins can reproduce at any time of the year. After pregnancy (two to five months, depending on species) only one young is born (African species) or up to three (Asian species).

pangolin, hembra, female, mamas, breast, pecho, tetas
Female pangolin. (Photo by Scott Hurd)

The pangolin is born with soft scales, which begin to harden after two days. When after a month come out of the burrow, they travel on the tail of her mother and become independent at 3-4 months. Their lifespan is unknown, although in captivity an individual lived until 20 years old.

pangolin, baby, cría, zoo bali
Female with her baby in the tail. Bali zoo. (Photo by Firdia Lisnawati)

THREATS AND CONSERVATION

In addition to habitat destruction, the main threat that pangolins face is direct hunting for human consumption. Although there are international laws to protect them, it is estimated that about 100 000 pangolins are hunted annuallyGiven the defense strategy of this animal, poachers only have to catch them of the ground. Like other species, like sharks, the food market and traditional medicine are the main causes of directing the pangolin towards extinction.

pangolin, jaulas, tráfico ilega, illegal trade, bushmeat
Illegal trade in pangolin. (Photo by Soggydan Benenovitch).

WHY PANGOLINS ARE POACHED?

  • Bushmeat is considered a delicacy and an indicator of high social status in Vietnam and China. The pangolin fetus soup is sold as an elixir to increase virility and improve breast milk production. The price of bushmeat on the black market can reach $ 300 per kilo. The price of an individual can reach $ 1,000.
sopa, feto, soup, pangolin, feto, fetus
Pangolin fetus soup. (Photo by TRAFFIC).
  • Blood is sold as a tonic to improve health and as an aphrodisiac.
  • Scales can reach $ 3000 per kilo and are used for almost anything: to cure from acne to cancer. This belief is curious, considering that the scales have the same structure as our fingernails.
pangolín, china, medicina, medicine, tradicional, cura para el cáncer
Products of traditional Chinese medicine made of pangolin. (Photo by TRAFFIC).

All these purported medicinal and magical effects have no scientific basis, making yet more nonsense pangolin smuggling.

CONSERVATION

The population trend of all species of pangolin is declining in some cases to an alarming extent. The IUCN (International Union for the Conservation of Nature) Red List of Threatened Species classifies them as it follows:

RED LIS CATEGORIES IUCN
IUCN Red List categories. (Image from iucn.org)

Because of their status, IUCN restored in 2012 a group of specialists within the Species Survival Commission (SSC) dedicated to pangolins (Pangolin Specialist Group -PangolinSG-). Its main objective are do research to increase knowledge of pangolins, the threats they face and how they can be mitigated to facilitate preservation.

The conservation projects that are being carried out include campaigns to reduce the demand of bushmeat and pangolin scales and the tightening of laws. Still, the total ignorance of populations’ state and low survival in captivity for breeding makes it difficult to design strategies for their conservation.

WHAT CAN YOU DO FOR PANGOLIN?

  • Reject any product derived from this animal, either bushmeat, scales or “miracle” products for the cure of diseases. Read the labels of any traditional remedies, especially if they are from the Asian market, and recall that its hypothetical benefits have no scientific basis, so that you can rethink their use.
  • Share information. If you own new data on pangolins, photos or videos contact with PangolinSG to cooperate with the investigation. Talk about them in your immediate environment to raise awareness and publicize this fantastic single animal.
  • Do a PhD about pangolins. Lot of research on these species is still needed, so if you are a student and you are planning to do a PhD, you can collaborate with PangolinSG with your future research.
  • Become a PangolinSG volunteer. Get involved in the development and implementation of projects and conservation programs.
  • Make a financial donation so PangolinSG can continue its work.

In conclusion, more scientific research, a change of mind and protection policies are needed to prevent the pangolin become an example of extinct species at the hands of ours, as it is about to happen to white rhino.

REFERENCES

MIREIA QUEROL ALL YOU NEED IS BIOLOGY