Spring Health Assessment 2020

Between February 28th and March 1st, a total of 341 turtles (45 adults in the breeding population and 296 captive hatched animals) were assessed at the Hicatee Conservation and Research Center (HCRC). The primary purpose of the spring health assessment was to perform a basic exam of the overall health of the captive population at the HCRC, to look for follicles and eggs in breeding-size females and to PIT-tag animals.

Ultimately, we would like all turtles at the HCRC to be identified using a scute notching system and also a Passive Integrated Transponder (PIT) tag. A PIT tag is a small radio transponder that contains a specific code, which allows individual turtles to be assigned a unique 10 or 15 digit alphanumeric identification number. Unlike acoustic tags that actively send out a signal, they are “passive” and do not require a battery. Rather than the tag transmitting a signal, the tag scanner (or reader) sends out a radio frequency and when a tag is within range, it will relay the identification code back to the receiver. The lack of a battery is the greatest advantage of the PIT tag since it allows for the production of much smaller tags that can be used on smaller organisms, which should last the life of the turtle. 

As in past assessments, two days were dedicated to measuring, giving health checks and ultrasounds to adult and subadult turtles. A day and half was dedicated to PIT-tagging all of the captive born turtles in the 2018 cohort as well as the ones from the 2017 cohort that had yet to be tagged.  

We were thrilled to have a great group of return volunteers from last year’s spring assessment, as well as new participants from Jacksonville Zoo, Belize Wildlife and Referral Clinic, and recent graduates of Independence Junior College in Belize. The team worked tirelessly over three days to ensure that every turtle received the attention it needed.

We were grateful to receive support and assistance from the following participants in our spring health check: Dr. Isabelle Paquet-Durand, Veterinarian at Belize Wildlife and Referral Clinic (BWRC); Glendy Delcid, BWRC; Cayle Pearson, Supervisor of Herpetology, Jacksonville Zoo and Gardens; Meredith Persky, Veterinarian, Jacksonville Zoo and Gardens; return volunteers, Doris Dimmitt, Rodney Dimmitt, Tim Gregory, and Emily Gregory; and new volunteers, Jesse Rope, Jonathan Dubon and Ajay Williams 

We would like to express our gratitude to Jacksonville Zoo and Gardens for their continued financial support spring health assessments at the HCRC and to the Turtle Survival Alliance for supplying the PIT tags and associated equipment. Finally, a special thanks is in order to Doris and Rod Dimmitt for supplying Tom Pop with new waders to keep him warm and safe from leeches!

Let’s Celebrate World Migratory Bird Day in Belize! 

Join BFREE in the great world-wide celebration of migratory birds during the entire month of March!

Below are educational resources and additional information for you to use in your classrooms. We encourage celebratory events throughout the month of March such as educational presentations, cleanups, and other habitat restorations as well as bird walks, and creative art activities

Educational Resources:

Coloring Page
CLICK TO DOWNLOAD
Make a Bird Mask
CLICK TO DOWNLOAD
Bird Count Data Form
CLICK TO DOWNLOAD
BFREE Bird List
CLICK TO DOWNLOAD
WMBD Facebook Photo
CLICK TO DOWNLOAD
Migration Game
CLICK TO DOWNLOAD
Wings of Hope Film
CLICK TO VIEW

Classroom Activity Ideas:

  • Host or join a trash clean up, this can be done around your school, in your community or along the beach! Bonus challenge, have class competitions to collect the most trash or create an art project with the plastic collected.
  • Download the bird count and bring your class outside to record data from around your schoolyard.
  • Have a school-wide plastic-free challenge week. Challenge your students to go a full week without using any single-use plastic at school! 
  • Host a movie party, watch Wing of Hope, Yochi, or Birds of Belize to get to know more about the incredible birds in our country.
  • Share Migratory Bird Day in Belize on social media! Share the Facebook banner or post on Instagram and tag @bfreebz so we can see your activities!

Scheduled Events:

  • February 22: “Protect Birds: Be the Solution to Plastic Pollution” Presentation to students of Natural Resource Management from Independence Junior College
  • March 1 – 31:  Join BFREE in celebrating World Migratory Bird Day in Belize the entire month of March
  • March 4 – 6: BFREE presentations and activities for Primary and High Schools in Independence Village
  • March 14: Crocodile Research Coalition (CRC) and Next Gen Croc Club will host a beach clean up in Seine Bright

What is World Migratory Bird Day:

World Migratory Bird Day in the Americas is coordinated by the organization, Environment for the Americas, which promotes bilingual educational materials and information about birds and bird conservation. Environment for the Americas celebrates the migration of nearly 350 bird species between their nesting habitats in North America and wintering grounds in Latin America, Mexico, and the Caribbean.

Now in its 26th year, World Migratory Bird Day (WMBD) has grown from a one-day event to hundreds of projects and programs year-round and encourage individuals and organizations to join them in selecting their own date to celebrate WMBD. BFREE has selected the entire month of March to celebrate WMBD in Belize and we invite you to join us!

We are inspired by the phase-out plan to ban single-use plastic in Belize that became effective on 15 January 2020. The Minister of Agriculture, Fisheries, Forestry, the Environment, Sustainable Development and Immigration, Hon. Goodwin Hulse, signed into law the Environmental Protection (Pollution from Plastics) Regulations, 2020 that is set to reduce plastic and styrofoam pollution through the phasing out of single-use plastics in Belize as a control measure to protect the terrestrial and marine environment from harmful plastic contamination.

With this in mind, we at BFREE are celebrating WMBD by embracing the message, “Protect birds: Be the solution to plastic pollution.” 

We invite you, our partners country-wide to join BFREE in tackling the challenges of plastic pollution in the environment by sharing with your classrooms the many ways that plastic can harm birds and by offering some ideas for ways that we can reduce our use of plastic items.


The Truth Behind Plastic Pollution:

Since plastic was introduced in the 1950s, an estimated 8.3 billion metric tons have been created. Only about 9% of plastic materials are recycled, leaving more than 6.3 billion metric tons of plastics in landfills or polluting the environment. “One of the main types of debris in the marine environment today is plastic. We know fishing gear, plastic bags, bottle caps, utensils, and other plastic pieces are entangling and being ingested by birds. Plastics harm birds in marine environments, as well as other habitats. As human use of plastics grows, so too does the amount of plastic pollution that invades most ecosystems around the globe. “Plastic debris such as fishing line poses a serious risk of entangling birds, which can entrap them and cause serious injury,” says Dr. Susan Bonfield, Director of Environment for the Americas. Migratory birds also have a high risk of directly ingesting plastics. It’s been estimated that 80% of sea and shorebirds have consumed foam, pellets, thread, and other items. In addition, small bits of plastic, known as microplastics, pose a hazard to birds and smaller organisms throughout the food chain due to the toxins they concentrate in the environment.

The Spectacular Journey of Birds:

In addition to raising awareness about issues important to bird conservation, World Migratory Bird Day is also a celebration of the spectacular journeys that migratory birds take as they travel between nesting and non-breeding sites around the world. Global partners at the Convention on Migratory Species in Bonn, Germany recognize that “World Migratory Bird Day joins our voices as one for the protection of the birds we share. With raised awareness of threats such as plastic pollution to birds, it is our opportunity to take action by making changes that help birds, whether personal or more broadly.” Although WMBD is traditionally celebrated in Canada and the U.S. on the second Saturday in May, in reality every day is bird day, and programs, festivals, and other events occur throughout the year, whenever it works best for organizers—and the birds. “Ultimately, the goal of WMBD is to connect people to nature through birds,” says Miguel Matta, WMBD Coordinator in Latin America.


About BFREE:

The Belize Foundation for Research & Environmental Education (BFREE) operates a biological field station in the rainforest of southern Belize. Our mission is “to conserve the biodiversity and cultural heritage of Belize.” We strive to successfully integrate scientific research, environmental education,  conservation, and create sustainable development opportunities for alternative livelihoods for Belizeans.

About Environment for the Americas:

WMBD in the Americas is coordinated by Environment for the Americas, which provides bilingual educational materials and information about birds and bird conservation throughout the Americas. Their programs inspire children and adults to get outdoors, learn about birds, and take part in their conservation. To learn more about migratory bird habitats, download WMBD educational and promotional materials in Spanish and English, and search for activities planned in your area, visit http://www.migratorybirdday.org/

Miguel Matta, Latin America World Migratory Bird Day Coordinator, Environment for the Americas, Boulder, CO, USA. Email: mmatta@environmentamericas.org

In Pursuit of Hicatee in Belize by Day Ligon

The Hicatee, as Dermatemys mawii is known in parts of its range, is truly a unique turtle.
Although fossil records indicate that closely related species once occurred across Central
America and Europe, Hicatee remain as the only living representatives of a formerly species-rich
family of turtles. It is a large turtle, sometimes exceeding 22 kilograms. Despite its large size, it
is streamlined and, thanks to huge webbed feet, is extremely fast in the water. On land, however,
Hicatee are out of their element. They struggle to elevate their heads against gravity, and even
short walks across dry ground may leave their shells abraded with small cuts and scuffs.
Historically, this large denizen of rivers, lagoons, and mangrove swamps was common in parts
of Guatemala, Belize, and southern Mexico. In many communities throughout its range, Hicatee
are culturally important, not just as a frequently seen and admired inhabitant of the rivers along
which many communities have been built, but also as a culinary delicacy that is sought after for
holiday feasts and other celebrations. Unfortunately, its popularity at the dinner table is likely the
single greatest factor that is driving population declines. Today, few populations remain in
Mexico or Guatemala, and even those in the relative stronghold of Belize have declined
precipitously in recent decades.

Just how much have Hicatee populations declined? Everyone with experience with the
species seems to agree that declines are alarmingly great, but it’s also hard to put a number on.
Excellent research has been conducted that has generated insights about the species ecology,
reproduction, distribution and relative abundance, but since the 1980s efforts have been
intermittent and seldom generated more than a qualitative assessments of population sizes or
demographics. This isn’t for lack of interest or effort; animals that have the capacity to move
long distances and occupy open systems such as rivers are extremely challenging to count!

Fortunately, technological and analytical advances have made the solutions to this
problem more attainable. In spring 2019, members of the Turtle Ecology Lab at Missouri State
University teamed up with partners at the Belize Foundation for Research and Environmental
Education (BFREE) to determine the feasibility of generating population estimates. In five
weeks of field work, 193 Hicatee in three different populations were captured, weighed,
measured, and permanently marked for future identification. Additionally, a subset of turtles in a
closed lagoon system were equipped with GPS tags and sonic transmitters that will produce
information about their movements. These data will be especially interesting as the rainy season
commences, the lagoon reconnects to the Belize River, and turtles have the option of either
staying within the lagoon or venturing out into flooded forest or even to the river. This
information about the movement patterns of Hicatee will be put to use in 2020 when mark-
recapture efforts will be conducted to generate some of the first precise population estimates for
the species. These estimates, when generated in open rivers, become much more accurate when
typical movement patterns are known and can be included in population models.

In addition to calculating the size of populations of Hicatee in both open and closed
populations, as well as in hunted and protected areas, work in 2020 will benefit in other ways
from the preliminary research conducted in 2019. For instance, growth rates in captivity are
known thanks to research conducted at BFREE. However, little is known of growth rates in the
wild; by recapturing turtles that were first measured in 2019, not only will calculating growth rates across a range of size classes be possible, but so too will assessing the sexual maturity of
the many subadult turtles that were captured provide information about size at maturity.

All of this information is but a drop in the bucket in comparison to what remains to be
discovered about the fascinating Hicatee, but every new piece of life history data can help to
inform conservation efforts on the species’ behalf. And of course, field research efforts such as
were undertaken in 2019 require a tremendous network of support. Participants from the Turtle
Ecology Lab at Missouri State University included Denise Thompson, Donald McKnight
(currently at James Cook University), and Ethan Hollender. Thomas Pop and Jaren Serano joined
the effort from BFREE with tremendous support from Jacob Marlin and Heather Barrett. Elyse
Ellsworth from the Siler Lab at University of Oklahoma and Hunter Howell from University of
Miami also put in many long hours in the field. Yamira Novelo (Wildlife Conservation Society)
helped both in the field and with some logistics. Albert Gill lent his assistance and knowledge of
the area during work at Spanish Creek. Additional assistance was provided by Felicia Cruz and
Gilberto Young in the Belize Fisheries Department, Jeff Robison and Roberto Flores at Yalbac
Ranch, and Alan Jeal at Gallon Jug Ranch. Finally, this conservation project would have gone
nowhere without assistance from Bart Harmsen and valuable advice from Thomas Rainwater and
John Polisar. Reversing the population declines Hicatee have experienced will require a
community effort, and work thus far has proved that a dedicated network of people with a
passion for saving this charismatic but critically endangered species already exists and is already
working toward this goal.

Photo Credits:  Day Ligon and Ethan Hollander

Spring ’19 Hicatee Health Assessments

Team Hicatee Spring 2019

During the early March Hicatee Health Assessment, a total of 214 turtles were assessed at the Hicatee conservation and Research Center (HCRC). The primary purpose of the spring health assessment was to perform a basic exam of the overall health of the captive population at the HCRC. Because oviposition takes place between the months of November and February, it was also relevant to check for the presence of additional eggs. 

Prior to the Health Assessments beginning, a small team of volunteers arrived to help prepare the site. The team cleaned hatchling tanks and moved the 140 hatchlings from the 2018 cohort from the soft release cage where they had been housed since December. They were placed there during the coldest months of the year because the water in Pond A maintained higher temperatures than in the smaller, above-ground tanks where they live during warmer months. Hatchlings were counted and given a quick check before being transferred back to the tanks where they acclimated until their assessments a few days later.

The three day processing started off with adult turtles being netted from the pond A, then placed in their respective holding area awaiting assessment. On day two, Adult turtles from Pond B was then netted and assessed. Day 3 commenced with a scanning of both pond perimeters for nest cavities which showed signs of eggs. Followed by the assessment of hatchlings from the 2018 cohort. Results from this year’s spring health check are still under analysis.

Cayle Pearson and Sarah Cristoff of Jacksonville Zoo and Gardens isolated several adult male turtles to collect additional data that will help them troubleshoot issues relating to the Hicatee turtles held in captivity at their facility.

We were grateful to receive support and assistance from the following participants in our spring health check: Dr. Isabelle Paquet Durand, Veterinarian at Belize Wildlife and Referral Clinic, Cayle Pearson, Supervisor of Herpetology, Jacksonville Zoo and Gardens, and Sarah Cristoff, Veterinary Technician, Jacksonville Zoo and Gardens, Heather Alford, Missy Belmer, Laurie Haven, Doris Dimmitt, Rodney Dimmitt, Tim Gregory, and Emily Gregory. We would like to express our gratitude to Jacksonville Zoo and Gardens for their financial support for this spring’s Hicatee health assessment.

The Hicatee Conservation & Research Center is a joint protect between BFREE and Turtle Survival Alliance. The bi-annual Assessments help ensure the health of captive animals at the HCRC and also contribute to our ongoing research of these critically endangered turtles. #savethehicatee

Herp Survey at BFREE

Researchers from L to R: Briana Sealey, Courtney Whitcher, Alison Davis Rabosky, Peter Cerda, Iris Holmes, Michael Grundler, John David Curlis, Erin Westeen, Maggie Grundler

Article by, Iris Holmes

This May, a group of researchers from the University of Michigan and the University of California, Berkeley, visited BFREE to do a survey of amphibians and reptiles. They worked for two weeks, both on the BFREE property and at Mountain Pine Ridge Forest Reserve. Between these places, they recorded 47 species. Two of those finds (one snake and one frog) were significant range extensions within Belize.

Iris Holmes, University of Michigan Researcher, measures a snake collected during the survey in the BFREE Lab.

In addition to a biodiversity survey, the researchers collected a variety of data on each animal. They recorded snake anti-predator displays and took high-quality photos to study snake and lizard anti-predator and social color displays. One project focused on how frogs fluoresce in the UV spectrum and found new accounts of biofluorescence in several species.

The researchers also took microbiome samples from frog skin and snake and lizard digestive tracts. These samples will be used to understand the parasites that infect these species, and the bacteria that might help protect their hosts against these parasites. Other researchers worked to test hypotheses the diets of snakes, lizards, and frogs. Understanding what animals eat is key to conserving them – animals can’t survive if they can’t get enough food! The team was happy to find such diversity and abundance in the amphibians and reptiles of Belize. It was a particularly special experience to be at BFREE as the hicatee turtles were hatching.  Watching animals emerge with the first rains of the wet season was a true privilege.

BFREE Receives Porras Conservation Award

  It’s not often international wildlife conferences hold their annual meeting so close to home. Fortunately, the International Herpetological Symposium (IHS) chose Belize City as the base for their 42nd gathering and we are so glad they did!    The International Herpetological Symposium (IHS) provides a forum for the dissemination of information and research pertaining to the natural history, conservation biology, captive management, and propagation of amphibians and reptiles. The symposium provided a valuable opportunity to showcase the herpetological conservation taking place in Belize.    BFREE Staff, Jacob Marlin, Heather Barrett, Tom Pop, and Jaren Serano, attended the conference and presented on various topics. Dr. Marisa Tellez of the Crocodile Research Coalition also provided local perspective on conservation in Belize and several student presenters from southern Belize’s Independence Junior College highlighted research questions and projects pertaining to reptiles and amphibians in the country.    At the close of the conference, BFREE was given the Porras Conservation Award. This award is granted in recognition of lifelong achievements in and contributions to field biology. The award is presented to a speaker (or – in this case – an organization) who has demonstrated that their work represents exceptional accomplishments in the field that benefit herpetological conservation. We are pleased and honored to have our work recognized in this way.  

BFREE PRESENTATIONS AT THE 42nd IHS SYMPOSIUM

Jacob Marlin, BFREE Executive Director, provided the keynote presentation. “The Herpetofauna of Belize, 30 Years of Observations, Myths, Facts and Hot Spots”  

Heather Barrett, BFREE Deputy Director, presented “Awareness Messaging as a Tool for the survival of the world’s most endangered turtle family”  

Jaren Serano, BFREE Science and Education Fellow, presented “Turtle or Fish? Investigations into captive management and reproductive biology of the Central American River Turtle (Dermatemys Mawaii), at the Hicatee Conservation and Research Center, Belize”    

BFREE Receives Porras Conservation Award

 
It’s not often international wildlife conferences hold their annual meeting so close to home. Fortunately, the International Herpetological Symposium (IHS) chose Belize City as the base for their 42nd gathering and we are so glad they did! 
 
The International Herpetological Symposium (IHS) provides a forum for the dissemination of information and research pertaining to the natural history, conservation biology, captive management, and propagation of amphibians and reptiles. The symposium provided a valuable opportunity to showcase the herpetological conservation taking place in Belize. 
 
BFREE Staff, Jacob Marlin, Heather Barrett, Tom Pop, and Jaren Serano, attended the conference and presented on various topics. Dr. Marisa Tellez of the Crocodile Research Coalition also provided local perspective on conservation in Belize and several student presenters from southern Belize’s Independence Junior College highlighted research questions and projects pertaining to reptiles and amphibians in the country. 
 
At the close of the conference, BFREE was given the Porras Conservation Award. This award is granted in recognition of lifelong achievements in and contributions to field biology. The award is presented to a speaker (or – in this case – an organization) who has demonstrated that their work represents exceptional accomplishments in the field that benefit herpetological conservation. We are pleased and honored to have our work recognized in this way.
 

BFREE PRESENTATIONS AT THE 42nd IHS SYMPOSIUM

Jacob Marlin, BFREE Executive Director, provided the keynote presentation. “The Herpetofauna of Belize, 30 Years of Observations, Myths, Facts and Hot Spots”
 
Heather Barrett, BFREE Deputy Director, presented “Awareness Messaging as a Tool for the survival of the world’s most endangered turtle family”
 
Jaren Serano, BFREE Science and Education Fellow, presented “Turtle or Fish? Investigations into captive management and reproductive biology of the Central American River Turtle (Dermatemys Mawaii), at the Hicatee Conservation and Research Center, Belize”

 

 
 

 

Herp Survey at BFREE

 

Researchers from L to R: Briana Sealey, Courtney Whitcher, Alison Davis Rabosky, Peter Cerda, Iris Holmes, Michael Grundler, John David Curlis, Erin Westeen, Maggie Grundler

This May, a group of researchers from the University of Michigan and the University of California, Berkeley, visited BFREE to do a survey of amphibians and reptiles. They worked for two weeks, both on the BFREE property and at Mountain Pine Ridge Forest Reserve. Between these places, they recorded 47 species. Two of those finds (one snake and one frog) were significant range extensions within Belize.

Iris Holmes, University of Michigan Researcher, measures a snake collected during the survey in the BFREE Lab.

In addition to a biodiversity survey, the researchers collected a variety of data on each animal. They recorded snake anti-predator displays and took high-quality photos to study snake and lizard anti-predator and social color displays. One project focused on how frogs fluoresce in the UV spectrum and found new accounts of biofluorescence in several species.

The researchers also took microbiome samples from frog skin and snake and lizard digestive tracts. These samples will be used to understand the parasites that infect these species, and the bacteria that might help protect their hosts against these parasites. Other researchers worked to test hypotheses the diets of snakes, lizards, and frogs. Understanding what animals eat is key to conserving them – animals can’t survive if they can’t get enough food! The team was happy to find such diversity and abundance in the amphibians and reptiles of Belize. It was a particularly special experience to be at BFREE as the hicatee turtles were hatching.  Watching animals emerge with the first rains of the wet season was a true privilege.

Spring ’19 Hicatee Health Assessments

 

Team Hicatee Spring 2019

During the early March Hicatee Health Assessment, a total of 214 turtles were assessed at the Hicatee conservation and Research Center (HCRC). The primary purpose of the spring health assessment was to perform a basic exam of the overall health of the captive population at the HCRC. Because oviposition takes place between the months of November and February, it was also relevant to check for the presence of additional eggs. 

Prior to the Health Assessments beginning, a small team of volunteers arrived to help prepare the site. The team cleaned hatchling tanks and moved the 140 hatchlings from the 2018 cohort from the soft release cage where they had been housed since December. They were placed there during the coldest months of the year because the water in Pond A maintained higher temperatures than in the smaller, above-ground tanks where they live during warmer months. Hatchlings were counted and given a quick check before being transferred back to the tanks where they acclimated until their assessments a few days later.

The three day processing started off with adult turtles being netted from the pond A, then placed in their respective holding area awaiting assessment. On day two, Adult turtles from Pond B was then netted and assessed. Day 3 commenced with a scanning of both pond perimeters for nest cavities which showed signs of eggs. Followed by the assessment of hatchlings from the 2018 cohort. Results from this year’s spring health check are still under analysis.

Cayle Pearson and Sarah Cristoff of Jacksonville Zoo and Gardens isolated several adult male turtles to collect additional data that will help them troubleshoot issues relating to the Hicatee turtles held in captivity at their facility.

We were grateful to receive support and assistance from the following participants in our spring health check: Dr. Isabelle Paquet Durand, Veterinarian at Belize Wildlife and Referral Clinic, Cayle Pearson, Supervisor of Herpetology, Jacksonville Zoo and Gardens, and Sarah Cristoff, Veterinary Technician, Jacksonville Zoo and Gardens, Heather Alford, Missy Belmer, Laurie Haven, Doris Dimmitt, Rodney Dimmitt, Tim Gregory, and Emily Gregory. We would like to express our gratitude to Jacksonville Zoo and Gardens for their financial support for this spring’s Hicatee health assessment.

The Hicatee Conservation & Research Center is a joint protect between BFREE and Turtle Survival Alliance. The bi-annual Assessments help ensure the health of captive animals at the HCRC and also contribute to our ongoing research of these critically endangered turtles. #savethehicatee