Dr. Owen O’Shea, Associate Researcher with the Shark Research and Conservation Program at The Cape Eleuthera Institute, recently visited the Haynes Library in Governor’s Harbour to deliver a talk on sharks and rays to around 40 young people and members of the Bahamas Reef Environment Education Foundation (BREEF). In his 90-minute presentation, Dr. O’Shea covered important aspects of shark ecology and biology in The Bahamas and held an open discussion on why sharks and rays are so important for ecosystem function.
Dr. Owen O’Shea speaks about the importance of sharks and rays.
The children that took part in this sea camp were aged between 8-14 and were all captivated by the images, videos and stories that Owen shared with them. “They were all so knowledgeable about the sharks in these waters,” said Owen afterwards, “it was remarkable that a group of young people were aware of the global pressures facing this group of species and wonderful to hear that many intended on applying for CEI Shark Program internships in the future.”
“Delivering outreach is an essential tool for scientists’ working at CEI and this was no exception,” added Owen. “I certainly think there were many future marine scientists sat in the audience.”
The Fall Gap Year Program is underway and boy have the gappers come a long way since we met, as seven strangers, at the Rock Sound Airport three weeks ago. With our fearless leaders, Liz and Pat, we have become a tight-knit family. Between getting SCUBA certified and oriented to campus, we had an action-packed first week.
Gap Year students participate in community service clean-up at the Ocean Hole Park in Rock Sound.
At the start of our second week, we really got into the swing of things. We began our classes, Human Ecology and Environmental Issues, where we learned how to live more sustainably in our daily lives. Each of us chose a topic of interest to research and present to the rest of the group. Continue reading →
Fiona Francis catches juvenile fish on the patch reefs to be incubated in sea water.
Summer 2014 was a fun but busy field season for the research team from Simon Fraser University. This was the first field season at Cape Eleuthera Institute for Fiona Francis, an MSc student studying the indirect effects of invasive lionfish under the supervision of Dr. Isabelle Côté. Two undergraduate field assistants, Kyla Jeffrey and Severin Vallaincourt, were assisting Fiona as well as working on small side projects of their own.
Schools of juvenile grunts, prey for invasive lionfish, often cover the patch reefs off the Cape in South Eleuthera.
The team spent most of the summer studying how invasive lionfish can change primary productivity on reefs. Native fish provide nutrients to algae and seagrasses, and Fiona was trying to determine if lionfish predation on these native fish reduced the availability of those essential nutrients. To do this the team spent long hours catching fish to determine the levels of nutrients excreted by different species into the water around them. While this might not sound too hard, fitting a wriggling, venomous, spiny fish into a Ziploc bag full of water proved to be quite a difficult task! Continue reading →
The summer season at Cape Eleuthera Institute always sees a tremendous amount of activity. Visiting scientists fly in, new interns and undergraduates arrive, and every now and then our own researchers spend some time off-island diversifying their studies. This past summer, Lionfish Research Program RA Alicia Hendrix headed to Honduras to lead work with UK-based organization Operation Wallacea, which offers volunteers a chance to assist scientists at field sites around the globe.
Alicia Hendrix shows Operation Wallacea volunteers how to dissect a lionfish.
The Bay Islands of Honduras offer a unique research opportunity to contrast divergent fishing pressures on Caribbean lionfish communities. Two sites – the Bay Island of Utila off the coast of La Ceiba and Tela, a mainland site just a few hours away – support very different reef-based economies. Utila, a widely known and popular dive destination, is home to a dozen dive shops most with active lionfish culling programs, but is not a primary fishery for more commonly consumed Caribbean staples. Tela, a site far less frequented, has been subject to harsh overfishing in past years, supports a reef fish community recovering from those pressures, and currently experiences little in the way of lionfish culling. Contrasting the two can give researchers an idea of how factors such as lionfish spearing, regular exposure to divers, and more broadly targeted fishing practices might affect lionfish distribution and behavior. Continue reading →
During lionfish dissections, external total and standard length measurements are taken.
Gap Year students spent an afternoon with the sustainable fisheries program, dissecting lionfish and engaging in discussion about the invasive species. During the dissection students poked at lionfish visceral fat and removed the fishes’ venomous spines, among other organs. The dissection was a hands-on way to see how these habitat and feeding generalists thrive in the Bahamas. They eat during all hours of the day and, as a result, have more visceral fat than most fish. Understanding mechanisms which make lionfish such successful invaders is an important first step to effective management of the species.
After learning about the latest research regarding lionfish prey preferences and feeding habits, Gap Year students headed into the field to try their hand at catching prey fish for the lab. Armed with fins, snorkels, and hand nets, the team of 5 targeted juvenile fish which could be used in lab choice trials. Despite initial setbacks (catching fish has a learning curve!) the excursion was ultimately a success and a collection of damselfish, silversides, and grunts made their way back to the CEI wet lab.
Brookwood School students and teachers recently headed back to Massachusetts after their school’s first visit to Cape Eleuthera Institute. During their 6-day adventure the group was able to learn more about the sustainability initiatives in practice around campus and explore some of the local environments. After visiting these places, students were able to develop a better understanding of the impact that they as individuals and humans have on the marine environment.
Out for a snorkel in Paige Creek after learning about the importance of mangrove systems.
Students started off their adventure with field lessons in coral reef and mangrove ecology. When snorkeling to explore these areas, many were surprised by the warm water temperature and the abundance of colorful fish. So different from the coastal waters back home in the New England area! The group spent a lot of time in the water; they snorkeled above the aquaculture cage, explored some patch reefs, swam in a blue hole, visited Lighthouse Beach, and even went out on a night snorkel! Continue reading →
Shark Research and Conservation Associate Researcher Dr. Owen O’Shea recently attended the 30th annual meeting of the American Elasmobranch Society in Chattanooga, Tennessee. Dr. O’Shea presented his paper ‘novel observations on an opportunistic predation event by four marine apex predators’ co-authored by John Mandelman of the New England Aquarium, Brendan Talwar of Florida State University and Edward Brooks, program manager at The Cape Eleuthera Institute.
Dr. Owen O’Shea in Tennessee at this year’s annual meeting of the American Elasmobranch Society
PHAHS teachers tour the CEIS farm and orchard looking at native Bahamian plant resources and sustainable practices.
Teachers and Vice Principal, Ms. Knowles, from Preston H. Albury High School came to visit during teacher’s planning week in late August. This visit served as the start to a collaboration regarding ways that CEI may support their curriculum planning with a focus on scientific research, native Bahamian resources, and small island sustainability. We hope that teachers of all subject areas, not just biology and the sciences but also math, English, art and other subjects, see a connection with the projects we have here at CEIS.Continue reading →
This past summer was a busy time for the sustainable fisheries team, with numerous conch and lionfish lab trials.
Students and interns observing lionfish in the lab
On the lionfish side of things, Helen, one of the visiting Newcastle students, is looking at prey density as well as whether or not it benefits lionfish to hunt in groups. She does this by adding 1 (or more) lionfish to a tank containing varying densities of prey fish (grunts) and observing the rate at which the grunts are eaten. Emily (another student from Newcastle University) is exploring prey preference in lionfish. She ran a series of trials to determine whether lionfish are more likely to attack a grunt or a damselfish if given the choice. She is now determining if lionfish rely more on visual or olfactory signals when hunting.
Oli, a third student from Newcastle, was running behavioral trials on conch. A fisherman’s tale suggests that the declining numbers of conch available is due to the fact that the animals run away from knocked shells that have been thrown back into the water by other fishermen (as opposed to overfishing). Oli is testing this explanation by dropping empty conch shells (as well as rocks as a control) in a tank with a live conch and monitoring its movement for 4 hours. We will keep you updated on the results of these trials as they progress!
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