Fishy science for a great cause

By Davide Gaglio

So, I am on Robben Island, it’s dark, I am alone, and in front of me… a dead African Penguin!

Penguin roadkill on Robben Island
My gruesome finding of penguin roadkill along one of Robben Island’s quiet roads

Let’s remain calm, I say to myself, thinking to get the best from this tragic experience. Well, you’d be surprised to see what happens to the penguin next! 🙂

Playing poker with my newly stuffed penguin...

I believe a sense of humour is important even for serious matters and is extremely crucial for scientists! Anyway, the day after I stumbled across the penguin carcass I was still traumatised but feeling ready to start my research. Things like that must not happen again, I kept saying to myself… From that day I promised I would get on top of my research and do all my best to share knowledge and education to those people who do not know/care about the importance of the ocean and its inhabitants. Being on Robben Island, I thought about a quote that Nelson Mandela shared about education in South Africa, “Education is the most powerful weapon which you can use to change the world”… and I knew that there was no better place for me to fulfil my promise.

That day I started at 6 am… yes my dream had come true. I was taking photos for my research and at the same time, I knew that those images would help me to communicate love for the ocean and its need to be protected. I would never imagine that very soon two of my photos would be selected as one of the top 50 of the International Photographic competition run by South Africa Birdlife “Ocean of life” 2013 and another one in 2014!

http://oceansoflife.co.za/gallery

http://oceansoflife.co.za/gallery/2014

I have been amazed to discover how helpful my photographic skills have become in my scientific research! Did you know that in the last few years, between 6,000 and 10,000 Swift Tern pairs have bred on Robben Island every year? And understanding what’s going on is not always easy! I have been making full use of modern technology to help me out, especially DLSR cameras, camera-traps and

Try to remain sane in this chaotic crowd!
Try to remain sane in this chaotic crowd!

video cameras. Trust me, they are very useful tools in such noisy, smelly, crowded and chaotic colony such as this one.

So, let’s see if you could contribute to some fishy science… Let’s have a poll on this blog to see if you know your sharks from your sardines.

Early in the morning as the sun is coming up, my terns are already busy bringing food to their chicks. And I am busy there taking photos of them…the first photo is the most common species….do you know what species is this?

Fishy prey #1
Fishy prey #1

Right 🙂 , this is an anchovy….easy! What about this one?

Fishy prey #2
Fishy prey #2 (Click on pic to enlarge)

…Ok I am not telling you 😉 Let’s see if you have the right answer in the comments and polls.

And some more for you…..

Fishy prey #3 (click pic to enlarge)
Fishy prey #3 (click pic to enlarge)

 

 

 

 

Fishy prey #4
Fishy prey #4

 

 

 

 

Fishy prey #5
Fishy prey #5

 

 

 

 

Fishy prey #6
Fishy prey #6

 

 

 

 

I promise to reveal the correct answers by next week Wednesday, in the comments section. At the moment, I am collecting many more photos and soon it will be time to identify new prey species, which I will publish on this blog. So, are you ready to join the challenge in trying to identify their prey and give me your comments? Whether you are a keen photographer, or knowledgeable on fish identification or you just like to know more about it, you are welcome to comment and vote, and let me know your thoughts.

I have found many prey species so far, and it’s exciting everyday, although sometimes it can be exhausting and challenging… but chicks must eat in the wind, rain, fog, well … anytime!

The ultimate goal of my research is to understand how Swift Terns cope with variable food availability and understand differences to other seabirds. I am investigating to what degree their behaviour flexibility underlies their success, in order to assess the impact of commercial fisheries on marine ecosystem dynamics. So there is a lot of stuff to learn, and I have many more adventures to tell you! Keep connected and don’t forget to complete the polls about the prey photos…. the more votes… the more photos 🙂 See you next time!

My journey into the world of Kalahari foxes…

By Keafon Jumbam

30 April 2015

Keafon-1I’m in the heart of the Kalahari Desert surrounded by red dunes, shrubs, trees and grass scorched to death by the blazing heat of the desert. This is my second year of PhD research on the behavioral ecology and endocrinology of maternal care in bat-eared foxes or batties. Before moving into the world of foxes, I had mainly worked on invertebrates, completing my BSc Honours research on Marion Island spiders and a Master’s degree on invasive Argentine ants. I then took a break from schooling and plunged even deeper into the world of ants by working for an outreach project called Iimbovane (meaning ants in isiXhosa. We used ants as tools to raise awareness of South Africa’s biodiversity and species distribution across the Western Cape (see Quest, June 2010, pp. 8-11).

Keafon-2I quickly hit a mental plateau due to the repetitiveness of my job and started itching for a new challenge. When this PhD opportunity came along, I grabbed it because there was a familiar link to my past – batties feed almost exclusively on invertebrates – but also an entirely new dimension. This would be the first mammal I ever research. The really unique thing about batties is that fathers shoulder most of the parental duties. While I personally think the human race could learn a thing or two from this phenomenon, the real question is: why do females abandon most of their maternal duties? To find answers to this puzzle, I record their behavior – we follow them on foot for 2hrs at a time. I also collect fecal samples to check for stress hormones – some researchers suspect that mothers are stressed because their mainly insectivorous diet may not meet their nutritional needs. Lastly, I employ sampling techniques (pitfall traps, sweep netting) to investigate how their food varies seasonally.

Keafon-3The best thing about my PhD research is the intellectual growth from learning new things about batties, bonding with other researchers, bouncing ideas off each other – all of which keep my mental juices flowing. Another definite plus is travelling; I love seeing new places and I get to travel to conferences and nature reserves. I feel fortunate to be this close to nature and to come across many rare animals that most people will only get to learn from textbooks. The downside includes long periods spent away from loved ones, especially during family time, like Easter. The remoteness of the reserve makes network reception a constant battle, further stalling any attempts to make contact with the outside world. Another challenge is spending many hours alone following a nocturnal animal in a reserve full of wildlife, venomous scorpions and snakes, all the while hearing strange noises emanating from nearby bushes. Sure enough, there are plenty of scary encounters to share with you, but I leave that for my next blog…