Tag Archives: hydroids

Bye Belize!

These past two weeks were a whirlwind of learning and witnessing the beautiful biodiversity between the two most diverse ecosystems on earth— the coral reef and the tropical rainforest!

It gave me a taste of home being back in a marine ecosystem, but this environment was also very different and allowed me develop a more well-rounded view and knowledge of coral reefs across the globe. After researching coral reef framework, I learned the critical importance that reef-building corals hold in maintaining the the coral reef ecosystem as climate change, disease, and other anthropogenic factors threaten the very continued existence of the coral reefs we have loved and admired. Having seen coral bleaching events occur in my home town, I was dismayed to learn that the coral loss of diversity is even higher in the Caribbean with a 25% loss of genetic diversity which occurred in just the last 15 years. I feel a deepened sense of duty and desire to help preserve what is left of healthy coral reefs. My favorite things to see on the reef were lobsters, sea urchins, turtles, mantis shrimp, ctenophores, hydroids, annelids (mostly Christmas tree worms) and many more creatures! I liked picking up the sea urchins gently, and seeing hermit crabs shell swapping!

Similarly, the beautiful tropical rainforests at Las Cuevas left me astonished with its ancient and delicate pattern of nutrient recycling (which is also seen similarly with coral reefs and sediment). We learned that there are layers in soil which allows for the intake and recycling of nutrients which are imperative to the survival of so many species within the rainforest (similarly seen in coral reef framework). Slash burn agriculture is very harmful for the soil and disrupts this nutrient cycle so that plants can never prosper quite the same in areas that have been affected. We also learned that many creatures in the rainforest have specific niches such as epiphytes which are plants that reside in the canopy.  This nutrient process of recycling is what allows these ecosystems to be so abundant with flora and fauna!

Heart of Chiquibul Forest from the Bird Watching Tower

We learned that there are many interesting similarities and connections between the surf and turf!! For example, we learned that when nutrient pollution in the rainforest can make its way to the coral reefs through rivers which could cause a massive sargassum algal bloom which blocks sunlight from coral reefs. One thing that definitely left an impression on me was the interconnectivity of every ecosystem. For example, we learned that mangroves filter out pollution, sea grass beds help prevent erosion, and coral reefs provide biodiversity at Glover’s Reef. (SO COOL)

I couldn’t comprehend the level of diversity and closeness to wildlife that I would be exposed to! This trip exceeded my expectations in every way! I loved the opportunity to witness marine and terrestrial animals in their own ecosystems. I loved watching squid communicate with each on a patch reef. I was amazed by the complexity of leaf-cutter ant communication while digging up an ant hill. I am definitely filled with a new awe and appreciation for all ants now. The coolest experience for me was definitely the night hike and the interaction between the Morelet tree frog and Rusty’s face (haha) and the interaction between the snake and the tree frogs eggs. I truly felt like a special guest viewing the world of wildlife, and it was the most amazing and rewarding feeling seeing creatures behave normally and undisturbed in the wild. I strongly wish to preserve these creatures and ecosystems. It pains me to think that the critically endangered tree frogs might not be there if I were ever to return.

Although the bug bites and cold showers were inconvenient at times, it was nothing compared with amazing experiences this trip offered and it is just part of true field work experience that most biologists have! It helped me solidify my passion for conservation and helped me develop more as a TFB. For instance, I have started to attempt to identify each species I encounter and think critically about scientific surveys that could be conducted to help protect the area. I was also bitten by the travel and Chiquibul bugs. I feel drawn to go beyond the usual travel experience, and I want to now travel purposefully to help in what ever way I can to improve these ecosystems. 

Me wanting to go back to Belize right now 🙁

Three things I’ve taken way from this trip:

  1. The most abundant, diverse , and interconnected ecosystems on earth that rely on very specific processes to maintain life forms that reside in these ecosystems are being threatened by humans.
  2. Always expect the unexpected! There were so many moments during this trip that left me in awe such as when we discovered a Mexican burrowing toad in an ant hill! it’s important to also not expect to find results in our surveys to prevent bias and keep an open mind to possibilities that biologists may not have accounted for.
  3. Empowering people to care and take interest in nature is a big step towards preserving ecosystems and animals. After talking with experts, I also know how hard it is to preserve ecosystems with limited resources. For example, only 6 % of coral reefs are protected properly and Dr. Arevalo shared with us the hard and long the process it can be to gain government support on conservation issues.

I have loved all the riddles and TFB jokes that our group has shared together. It was such a privilege to grow closer to every member of our group and so amazing to share these experiences with passionate professors and students who are also interested in nature and biology, as well as the junior TFBs that remind me to always remain curious. 😉

TFBs <3

I have learned so much on this trip! Thank you all!

Peace and Love Nature and the TFB life <3

~ Maegan

Day 7: Ending our Last Day at Glover’s with Lionfish Ceviche

We went on our last snorkeling trip to collect data from a non marine protected reef. There is saw a significant amount of bladed fire coral. I also saw a Christmas tree worm that appeared to have bored inside of fire coral which I thought was very interesting because I thought, since fire coral was an athecate hydroid colony and a hard coral, many marine organisms would avoid them due to their stinging capabilities, but they seem to support many life forms.

I also saw and photographed this Caribbean Reef Squid which was very cool! I saw some color changes on the squid when two were together so I wonder if they were communicating.

 Later we dissected three lionfish ( named snack, appetizer, and main course). Our group dissected snack the smallest of the three. After collecting data we made our lionfish into ceviche dish! Muy delicioso!

Although I am sad to leave Glover’s, I have grown and learned so much. I’m so excited for the rainforest and to stay at Las Cuevas!

~ Maegan

Day 6: A Trashy Yet Wonderful Day at Glover’s Reef + Mummified Fish

Our day started our with our first journey to the Fore Reef (outer reef)! The stony corals there are much bigger and seem for the most part healthier (although there is still some disease).  We swam through a bunch of harmless ctenophores (similar to jelly fish) that Phoenix identified as Comb Jellies. They have a distinctive jelly feel and appearance with a translucent color which made it difficult to capture on camera! It was super cute! Michael also spotted a  loggerhead sea turtle! The Fore Reed was a little rough so we headed back to Middle Caye.

There we started our data collection of all sorts of trash that has been collecting on the atoll. From Nate’s presentation, we learned that there is a gyre in the Gulf between Belize and Honduras that collects a lot of trash that will wash up on the shore and harm the environment and wildlife. After some hard thinking, we decided to research the percentage of trash that could be properly disposed of and destroyed on island. We predicted that > 50% of the trash we collected could be disposable and split into groups. My group went to the coral cemetery and there was so much trash here. The heart breaking part of picking up trash is when the trash was so brittle that it would break and make more microplastics.  Nate found a perfectly preserved- mummified box fish skeleton which was so incredible! I’ve never seen something so well preserved! The fish even had teeth! SO FLIPPING COOL!

Once all the groups were back from collecting our trash we discovered that Middle Caye did not have the resources to take recycle plastics or take them to the mainland regularly, and that they burn all plastics so our hypothesis was sadly off in the fact that more than half of the trash we collected could be recycled and destroyed in a more ecofriendly manner. We can only bring a bag of glass and metal with us compared with the 6. In the future we decided to bring sacs instead of trash bags to collect the trash and it made us all much more aware of the trash we were generating on island.

Post trash sorting photo taken by McKenna!

I had my presentation on annelids and hydroids today. Michael and Sophia asked two important questions that I did not know the answers too so I did some research today to answer them.

  1. What eats these annelids on the reef?

Many worms are eaten by mostly many reef fishes such as wrasses or angelfish species.

  1. Why are Christmas tree worms so many different colors?

One article said that Christmas tree worms will often be in colors that match the reef around them, but I have seen worms that are colors that don’t match the reef around them. Another article says that the host coral can influence the color of worms and that the color of Christmas tree worms can be used to determine coral health.

Link: https://link.springer.com/chapter/10.1007/978-3-030-91924-5_15

Tonight at dinner, one of our wonderful guides, Ruth, taught us all about the history of Belize, the demography and mix of cultures present, and the many attractions of Belize! I am getting so excited to see more of Belize!

Peace and Love <3

~ Maegan

Day 5: More Taxa Sightings & Reef Conservation

In the morning, we traveled by boat to more marine protected areas to continue our coral health research project and conduct more sea urchin gathering/counting (I discovered that it is very fun to hold sea urchins and not scary at all :D).  We also caught our second lionfish of the day! Yay!

I also noticed a beautiful and healthy branching fire coral (millepora alcicornis). It dawned on me that despite a few stag horn corals in the area that it was one of the only branching hard coral left healthy on this reef. I could see fish and sea urchins all around it! It’s so important to our coral reef ecosystem!

I also saw my first star horse-shoe worm (pomatostegus stellatus)! It was bright orange and very sensitive to my water movement, but I finally managed to get a picture! You can tell it’s a star horseshoe worm by it’s U-shaped crown radiole, but it’s hard to see in this picture.

Below is another cool Christmas tree worm!

Later when snorkeling just off of Glover’s Atoll for our optional snorkel, I saw a pufferfish (pictured below) and a stingray with my snorkel buddy Faith. I also spotted a lionfish and alerted the group, but unfortunately we could not catch this invasive species.

I also saw some a new species of worm called spaghetti worms (eupolymnia crassicornis)! They usually live in holes in the sand or in coral and they have long (< 18 inches) thin noodle-like tentacles which help them to catch food! I was surprised to see so many since they usually live on or under the sand which makes them hard to see. If you lightly touch their tentacles it will retract which is so cool to see. I love annelids.

Later that night, we had a guest lecture from the manager of Glover’s Research Station, Rafael. He told us that this was one of the only places in the Caribbean that is dedicated to preserving pristine reefs. There is not commercial fishing in this area, and fishermen willing to break this rule face these thousands of dollars in fines- some can even face jail time. If a large amount of fish that is illegally caught and dead, all the fish will eventually be donated to humanitarian nonprofits such as orphanages. There has only been 4 infractions in 2022 so far. Three people are stationed on Glover’s Atoll which include the manager, ranger, and marine biologist and these people enforce the laws. Since there is limited staff, some times the  Coast Guard will also assist when there is trouble. The Glover’s Reef Staff has maintained good relations with the local fishermen and some of these fishermen will report illegal fishing that they see.  Rafael told us he saw a shift of thinking towards sustainable fishing for the local people as although fishing is a necessity for providing for their families they also want to preserve their reefs. Glover’s Reef Research Station has assisted the Wild Life Conservation Society in many surveys such as:  turtle egg surveys, lobster surveys, stony coral tissue loss disease surveys, and conch surveys.

It’s very cool to see these conservation efforts and I hope I can contribute in any small way! Peace and love from Belize.

~ Maegan

(this is such a beautifully cut mango that I felt needed to be highlighted :p)

Day 4: Patch Reef Health + Sea Urchins

Our class traveled on boat to perform some examinations of the patch reefs on Glover’s Atoll today! Using our transect tapes and quadrates again, our class decided toe analyze the relationship between the density of sea urchins and percentage of live and dead coral on both marine protected reefs as well as unprotected reefs. We discovered that although our methodology seemed sound that with the shallow waters, strong ocean currents, and the presence of millepora alcicornis or Branching Fire Coral that was present on both reefs. Jasmine got stung by this hydrozoan unfortunately :(, but the stings will go away with hydrocortisone! We did discover that the marine protected reefs were deeper and had healthier and more abundant corals and fish!

In the marine protected area I saw many solitary Christmas Tree worms of all colors!Right next to it is some Magnificent Feather Duster worms!

I also got to see my first split crown feather duster! You can tell by the how the radiole splits perfectly in half mirroring itself.

I believe I also got to see my first Christmas Tree Hydroid which was very exciting!

I even saw three lobsters with Faith all lined up in a row! Incredible!Right after I saw my biology professor, Dr. Solomon, spear a lionfish which is an invasive and harmful, yet delicious, species to the Caribbean. Lillian was very excited! 😀

Earlier in the day we collected all sorts of sea creatures for examination in the wet lab room. There was: green algae species, brown algae species, glass shrimp, conch species, anemones, mantis shrimp, several crab species, sea urchin (Caio picked it up with a net), and even a lobster!

I can’t wait to go to see more on the outer reefs tomorrow! Peace out!

~ Maegan

Day 3: Penicillus Project + Coral Graveyard

Today we started to think more like field biologists by using tools such as our quadrates and transect tapes to measure densities and volumes of objects such as coral heads! We came up with a scientific question and hypothesis to test about the green algae, penicillus. We wanted to test how the penicillus density would change as we got into deeper waters. Our class could perform this data collection if we all went vertical by shoring using our transect to measure our 100 ft from shore, and then using our quadrat to search for and identify penicillus among the sea grass. Our hypothesis was that penicillus would be more abundant in shallower waters, due to higher sunlight and more nutrients, but we were wrong. Our data supported the idea that penicillus was more abundent in deeper waters and was typically seen not solitary but in groups. We presented our evidence and conclusions to our professors and they seemed impressed for our first field biology project. Maybe some day in the future we’ll try to experimentally determine the reason for this (possibly competition with sea grass or other factors).

Here’s us working and discussing our presentation of our data

While we were working on our presentations Nyala and Caio brought us coconut meat which was a delicious snack!

Later we visited our Professor Correa’s favorite place on earth- the Coral Graveyard. The coral graveyard has all different specimens of corals that seem to be very well preserved.  There was stag horn coral, different species of brain corals with cool patterns and ridges, and there was also a type of coral that is so rare that there has hardly been any sightings in the last 40 years (before the coral disease epidemic). It was very important that we know learn to match these corals up with live species that we may encounter in the reef! We also discovered a fossilized palm tree species which Dr. Solomon is pictured holding!

I spotted a coral specimen that had  a possible annelid boring mark. This was probably a type of worm hole! It was perfectly preserved and I wonder what type of annelid could have made that mark.

There was also some specimens of Bladed Fire Coral (millepora complanata) which is a common hydrozoan reef-building coral in Glover’s reef! Bladed fire coral has very small hair-like polyp holes compared to most other species I have encountered.

I can’t wait to see more of Glover’s tomorrow and hopefully go on a boat snorkel trip!

~Maegan

Day 2: Snorkeling and the MOD

After a good nights rest, we rose early in the morning to start off our day snorkeling at Glover’s Reef! We had all our gear and were ready to start our first snorkeling adventure by 8:05 am which was a record breaking time according to our professors. I was amazed by the biodiversity of marine life on our snorkel! I recorded hard corals, soft corals, damsel fish, puffer fish, parrot fish, lion fish, lobster, and many more interesting species! Nyala and Caio pointed out my first annelid- Christmas tree worms! These worms bore into coral and have a spiral-shaped crown that are always seen in pairs of two (even though it is actually one worm). They can come in all shapes and colors and will retract back into the coral as if they were never present if they sense water movement of a big fish or larger creature, like us. (sorry for the poor camera quality!)

Hydrozoa are hard to locate on the reef but I spotted some fire coral today! Fire coral is an interesting creature because it is an athecate hydroid that behaves like a reef-building coral.

We also built quadrates which is a tool used by field biologists to help us measure and collect data!

Later for our second snorkel of the day we were given two choices- the safe choice of the adventurous choice. The safe choice was to snorkel in the reef we had just been at while the adventurous choice required us to walk through the MOD… Mangroves of Death that had swarms of mosquitos that would bite you even as you were running. We of course chose the adventurous path, and the misquotes were terrible but the marine organisms we saw at this next location made it worth it. We saw many fish as well as a nerf shark and sting ray. I also got the chance to observe two more annelid species. The magnificent feather duster worm was a multicolored worm (red and white) with large feather-like bristles shaped like- you guessed it- a feather duster. This worm will also retreat into the coral if there is water movement. I think I also spotted a spaghetti worm’s long white, thin tentacles under the coral, but it was difficult to tell.

Afterwards we listened to some presentations that helped us learn more about different reef creatures and reflect on the journey ahead. More to come! 😉

~Maegan 

PRE-DEPARTURE PREPARATION & EXCITEMENT

Hi my name is Maegan Aljure and I feel so excited and thankful to be part of Rice University’s first tropical field biology trip to Belize since the pandemic.

After reading about Belize’s fauna and flora, I expect to be amazed at biodiversity of creatures we encounter as well as admire the beauty of the rainforests at Las Cuevas Research Station and coral reefs at Glover’s Reef. I have lived on an atoll in the Marshall Islands for most of my childhood. This has enabled me to see many marine organisms while snorkeling, and has inspired me to continue to learn about these ecosystems and a desire to protect them. I am not familiar with many of the Caribbean species of fish, but I am excited to expand my current knowledge. I’m also thrilled about the opportunity to hike through the rainforest!

I researched beetles and hydroids for this trip. I have learned a lot about these creatures including the important roles they play in their ecosystems which as given me a new respect and love for these animals. Hydroids have stung me before in the ocean, but now I know that their goal is not to sting people- but to catch food.  I am very excited, but I am also nervous about lacking in field biology experience and I am worried about being overheated in the climate. I hope that the data I record in Belize will help me decide on my career path and contribute to current conservation efforts.  I am already packing all of my required supplies in anticipation for this amazing trip! I can’t wait to share all our experiences! I’ll see you all in Belize!

Passenger Fish

May 26, 2019

Today we started and completed a whole new experiment. To look at sea urchin community structure (and the indications it may have for herbivory and reef health), we went out and collected sea urchins in a bucket and recorded the species and diameter of each urchin.

During the search, I noticed several new hydroids! I saw what I believe to be a lot of Box Fire Coral (Millipore squarrosa), which is the third and last species of fire coral that I found to be common in the Caribbean.

I also spotted some Kirchenpaueria halecioides, a small hydroid that gets up to about one inch tall (see photo below) in addition to a possible Feather Bush Hydroid (Dentitheca dendritica).

Much later in the day, we got back in the water for a night snorkel. It was fun, but my dive light went out, and we were all way too close to each other – I think we were all paranoid about losing the group. When I got back, I found a tiny little fish inside my swimsuit. It must have somehow made its way into my skintight dive skin and swimsuit, but nothing can surprise me at this point.