Panacetacea
  • Panacetacea
  • Who we are
    • Research Team
    • Students
    • Colleagues
    • Cooperation
    • Gallery
  • Blog
    • Humpback Whales 2022
    • Humpback Whales 2021
    • Humpback Whales Summer 2019
    • Humpback Whales Summer 2018
    • Humpback Whale Winter 2018
    • Humpback Whales 2017
    • Humpback Blog 2015
    • Humpback Blog 2014
    • BlogBocasDolphin 2014
    • Summer 2013 Blog
    • Summer 2012Blog
  • Programs
    • Monitoring Program >
      • Humpback Whale Project
      • Dolphins of Bocas del Toro Project
      • Dolphins of Changuinola & Gandoca Project
      • Dolphins of Gulf of Chiriqui Project
      • Cetaceans of Iguana Island Project
      • Central American Marine Biodiversity Acoustic Surveillance Network
      • Stranding and Rescue Network
    • Education and Outreach Program >
      • Education >
        • Internships
      • Outreach
    • Ocean Science Program >
      • Whale-Watching
      • Bocas Study Case
      • Research Permits and Whale-Watching Licenses
  • Donors & Grants
  • Small Grants Program
  • How to help
  • Documents
    • Peer Reviewed Publications
    • Documents for the Public
  • News
  • Store
  • Contact us

Using flukes to identify humpbacks

8/17/2019

1 Comment

 
By Shelby Rosten

One of the primary methods we use to collect data on the humpback whales in the Gulf of Chiriqui is taking photos of their tails. Each humpback has a unique pattern on its flukes that can be used to identify it year after year. While out in the field we take pictures of as many flukes as we can, which can be challenging because humpbacks don’t fluke every time they dive.
​
When we get back to the lab, Kristin edits the pictures by cropping them and adjusting the brightness so all of the features stand out. First, I compare the flukes to all those already seen this season. So far, we have seen 70 individual whales and six of them have been seen on two days! After that, I compare all new flukes to the catalog which contains 778 individuals. Some matches are really easy…
Picture
Photo from 27 July. Individual (Temp ID 004) from a competitive group.
Picture
Photo of a whale from our catalog, seen in previous years
​And some are tricky...
Picture
Photo from 31 July. Temp ID 048
Picture
Photo from the catalog, seen in previous years
Using these data, we can estimate the size of the population of whales that come to the Gulf of Chiriqui to breed. Additionally, these photos are shared with scientists working all along the Pacific coast of the Americas and Antarctica to see where else these whales go. Whales seen here have also been observed in feeding grounds off the coast of Antarctica and Chile as well as adjacent breeding grounds in Central and South America.
1 Comment

RAIN

8/14/2019

0 Comments

 
Our field season happens to coincide with the rainy season in Panama. This is not necessarily a bad thing. We have come to love the overcast days because it means the tropical sun is not beating down on us so strongly. Another bonus is that when the skies are really dark, the humpback whale blows are easier to see. It usually doesn't rain all day and we can get out and work for at least a few hours. However, sometimes large storm systems move through and we might lose an entire day or two. Luckily we have plenty of work to keep us busy on land, and it's always good to catch up on rest after many long hours in the boat.   
Picture
Heading into the storm!
Picture
Getting wet
0 Comments

BREACH!!!!!

8/10/2019

0 Comments

 
Picture
We have been lucky to see whales breaching almost every day we have been doing surveys this year. No matter how many times we see this, it's always a huge thrill to see such a large animal propel themselves out of the water! It also makes it quite easy to find groups of whales when one or more is breaching like this, since the giant splash they make can be seen from miles away.
0 Comments

Solving Field Challenges

8/6/2019

0 Comments

 
By Colin Perkins-Taylor

The 2019 field season has been incredible so far, and I don’t think I will ever get over the fact that I get to study whales every day. Even on the slow days when it takes us an hour or two to find a whale, we never lose hope and always manage to find another individual or group. We also have seen a whale breach every day, so that doesn’t hurt either….
​
I am a rising senior at Swarthmore College here working with Dr. Matt Leslie from the Biology Department at Swarthmore. He studies cetaceans using drones and genetics. Specifically, he studies the differences between species, populations and individuals to determine if species and populations are unique, and determine if they need specific conservation plans. With the drones, we collect aerial photos and accurate altitude data to measure whales in various ways: their body length, head length, tail length, body width, etc. These details allow us to understand the size and health of the humpback whales here in Panama, and compare them to other populations. In addition, by collecting aerial images of groups of whales, we can better understand individual roles in social interactions. For instance, in a competitive group interaction, many male humpbacks tend to pursue a female; by combining genetic information from skin biopsy samples collected for each whale (including if the whale is a male of female) with the drone photos, we can determine which individual is the female and her position in relation to the male “pursuers.” ​
Picture
Drone image of three humpback whales used to measure body size and condition.
All of this probably sounds a little easier on paper than it actually is. Fieldwork always comes with challenges, and we’ve had our share, especially with the drone part.
 
Just a few weeks ago we were setting up a new drone for the first time back at Swarthmore. Matt and I flew it a little bit on our college campus before coming here. In addition, a fellow student at Swarthmore built an entire laser altimeter (LIDAR) system from scratch in less than three weeks; he finished the day before we left!! This system measures the distance from the drone to the whale, vital information needed to calculate the size of the whale. The first challenge we had to figure out a way to install it on the drone, which took some creativity. Then, in the field the LIDAR had several errors that required troubleshooting before the measurements could be collected. 
Picture
Me, holding the drone, for launch
​While it has been challenging, in a matter of a few short weeks, we are now measuring whales! It’s been a great learning experience, and I’m hopeful that we have learned from all our mistakes and it will just be smooth sailing from here on out!
0 Comments

    Author

    Write something about yourself. No need to be fancy, just an overview.

    Archives

    April 2020
    September 2019
    August 2019
    July 2019

    Categories

    All

    RSS Feed

Powered by Create your own unique website with customizable templates.
  • Panacetacea
  • Who we are
    • Research Team
    • Students
    • Colleagues
    • Cooperation
    • Gallery
  • Blog
    • Humpback Whales 2022
    • Humpback Whales 2021
    • Humpback Whales Summer 2019
    • Humpback Whales Summer 2018
    • Humpback Whale Winter 2018
    • Humpback Whales 2017
    • Humpback Blog 2015
    • Humpback Blog 2014
    • BlogBocasDolphin 2014
    • Summer 2013 Blog
    • Summer 2012Blog
  • Programs
    • Monitoring Program >
      • Humpback Whale Project
      • Dolphins of Bocas del Toro Project
      • Dolphins of Changuinola & Gandoca Project
      • Dolphins of Gulf of Chiriqui Project
      • Cetaceans of Iguana Island Project
      • Central American Marine Biodiversity Acoustic Surveillance Network
      • Stranding and Rescue Network
    • Education and Outreach Program >
      • Education >
        • Internships
      • Outreach
    • Ocean Science Program >
      • Whale-Watching
      • Bocas Study Case
      • Research Permits and Whale-Watching Licenses
  • Donors & Grants
  • Small Grants Program
  • How to help
  • Documents
    • Peer Reviewed Publications
    • Documents for the Public
  • News
  • Store
  • Contact us