19-04-2024
New Chair of ECS
New Chair of ECS
Last week in Catania (Italy) took place the 35th conference of the European Cetacean Society (ECS). The society was established in 1987 and aims to promote and advance the scientific studies and conservation efforts of marine mammals and to gather and disseminate information about them to members of the Society and the public at large. The business of the ECS is coordinated by a Council of 11 members, voted by the membership.
We are very proud to announce that our president, Dr. Tilen Genov, was elected in Catania as the new Chairperson (2024 – 2028) of the European Cetacean Society.
Sincere congratulations, Tilen!
13-02-2024
Dolphin Encounter on Carnival Day
Dolphin Encounter on Carnival Day
At Morigenos, we take research very seriously. But we also take Carnival seriously. Therefore, today we headed out to sea accordingly, because we also like to indulge in a bit of playfulness. But it wasn’t just us who were playful, we had the company of a joyful group of dolphins, including “our” Morigenos, which we haven’t seen for several months. Morigenos is one of the most frequently sighted dolphins in the Gulf of Trieste and one of the first dolphins identified in this area. We first encountered him in 2003 in Moon Bay near Strunjan, and we have been seeing him every year since then, for more than 20 years.
06-02-2024
Whales and dolphins of the Adriatic Sea: What do we know about them?
WHALES AND DOLPHINS OF THE ADRIATIC SEA: WHAT DO WE KNOW ABOUT THEM?
Morigenos participated in a new review study on whales and dolphins of the Adriatic Sea, published last week. In this comprehensive study, scientists review and summarise the existing knowledge on Adriatic cetaceans and provide guidelines for their long-term conservation. The study was published in the scientific journal Acta Adriatica.
In this new review, scientists carried out a very comprehensive review of the existing literature on whales and dolphins in the Adriatic Sea, and synthesised the findings of different studies. They looked at all aspects of various species of cetaceans living in the region: their distribution, abundance, genetic structure, behaviour, threats, etc. Reviews represent a synthesis of the knowledge generated by the various individual studies.
The published review shows the multifaceted status of Adriatic cetaceans. On the one hand, the diversity of cetacean species in the Adriatic is greater than many people probably imagine: five species live here regularly, and two more occur occasionally. Whales and dolphins are predators at the top of the marine food web and therefore play an important role in marine ecosystems. Their presence in the Adriatic Sea is a good sign in this respect. On the other hand, the Adriatic Sea is one of the most human-impacted areas in the Mediterranean Sea, exposed to many stressors that have a negative impact on the state of marine ecosystems and directly threaten Adriatic cetaceans.
So, what whales and dolphins live in the Adriatic? The most abundant species is the striped dolphin (Stenella coeruleoalba), which lives in the deep southern Adriatic (relatively rarely recorded in the Gulf of Trieste and Slovenia). The second most abundant species, which is also the most widespread throughout the Adriatic, is the bottlenose dolphin (Tursiops truncatus), which also lives in the Gulf of Trieste and Slovenian waters, and which has been studied by Morigenos researchers for more than 20 years. The common dolphin (Delphinus delphis) used to be common in the Adriatic, but is now comparatively rare. In the southern Adriatic, the Risso’s dolphin (Grampus griseus) and the Cuvier’s beaked whale (Ziphius cavirostris) are also present in smaller numbers. The latter is the world’s absolute diving record holder, as it can dive down to 3,000 m and stay underwater for more than three hours. The fin whale (Balaenoptera physalus), which occasionally visits the Gulf of Trieste, and the sperm whale (Physeter macrocephalus) are also occasionally seen, while other species are extremely rare in the Adriatic Sea. This includes the humpback whale (Megaptera novaeangliae), which spent two months in Slovenian waters in 2009.
Despite this relative diversity, the status of cetaceans in the Adriatic is worse today than it was a few decades ago. Between the 19th and mid-20th century, thousands of dolphins were deliberately killed in the Adriatic, leading, among other things, to the near disappearance of the common dolphin. Today, Adriatic cetaceans face many threats, including the combined effects of habitat loss and degradation, prey depletion, incidental mortality in fishing gear, anthropogenic noise, marine litter, chemical pollution and climate change. The Adriatic is a particularly vulnerable ecosystem due to its semi-enclosed nature and relative shallowness, and it is also the most heavily trawled sea in the world.
The lead author Dr Giovanni Bearzi reports: “In the past, dolphins were regarded as pests and the practice of killing them was common and widespread, largely as an attempt to reduce conflict with fisheries. In the Adriatic Sea, dolphin extermination campaigns were promoted by the authorities responsible for fisheries management, and these killings were carried out for more than a century, until as recently as the 1960s.”
“Today we know that large predators such as whales, dolphins and sharks aren’t pests, but instead play a very important role in the marine ecosystems” said Dr Tilen Genov, president of Morigenos and lecturer at the University of Primorska. “The data are clear: if we want a healthy and plentiful sea, which we humans also depend on, we need healthy populations of large marine predators.”
The authors believe that this new review will serve as a useful reference for researchers in the region, students, decision-makers and all those interested in Adriatic cetaceans, and will also provide a useful baseline for future research.
The review paper is available here: https://acta.izor.hr/ojs/ index.php/acta/article/view/ 1422.
31-01-2024
First dolphin sighting in 2024
First dolphin sighting in 2024
We are very happy to share the news about our first dolphin encounter of the year. Yesterday morning, during our fieldwork, we encountered a group of dolphins in Piran Bay, among which we immediately recognised some well-known fins such as Neptun, Olaf, Galatea and Natali, some of them with their calves. We have known some of these dolphins for more than 20 years now. But we were especially excited to see another special fin: remember the story from last May, when a Piran fisherman rescued an unlucky (and then lucky after all) dolphin caught in a fishing net? Based on your suggestions, we named him Srečko (“Lucky” in Slovenian). Yesterday, we spotted him as he and his friends swam playfully near our research boat. This confirms that last year’s rescue operation was also a long-term success. Thank you for following us and supporting our efforts to protect these fascinating creatures.
24-01-2024
Call for prospective PhD students
Call for prospective phd students
The University of St Andrews, in collaboration with Morigenos – Slovenian Marine Mammal Society, is recruiting a PhD student interested in studying dolphin movements. This is a fully funded PhD at the School of Geography and Sustainable Development, University of St Andrews, UK.
Movement is an important function of organisms, which has an impact on lives of individuals, populations, interactions between species and with humans, as well as on ecosystem processes. Ecologists collect data on animal movement through multiple approaches, including photo-identification.
In this project, the successful applicant will study movements of bottlenose dolphins using a spatio-temporal networks approach from human mobility research. Specifically, the project will use long-term photo-identification data to build origin-destination (OD) flow networks, which are common in studies of different types of human mobility, but they are not well-known in movement ecology. Here, we will investigate how spatio-temporal network analysis can be applied to the study of marine mammal movement, using a well-studied population of bottlenose dolphins (Tursiops truncatus) in the northern Adriatic Sea as a case study.
The student will be based at the University of St Andrews under the supervision of Dr Urska Demsar (University of St Andrews), and co-supervised by Dr Tilen Genov (Morigenos). Candidates should have a solid technical background in spatial data science or geoinformatics, and an interest in modelling of ecological processes. They should also have coding experience (preferably R or Python, but also Matlab, C++ or similar is appropriate).
More information about the project is available here: Studying movements of bottlenose dolphins with a spatio-temporal networks approach
For information on where and how to apply, please visit: https://www.st-andrews.ac.uk/ geography-sustainable- development/prospective/pgr/
Application deadline is 9 February 2024.
03-11-2023
The IUCN Marine Mammal Protected Areas Task Force Marks 10 years
The IUCN Marine Mammal Protected Areas Task Force Marks 10 years
Ten years ago, the IUCN Marine Mammal Protected Areas Task Force was launched at the International Marine Protected Area Congress (IMPAC3) in Marseille. It was formed to scientifically assess and identify key areas that are important for the conservation of marine mammals such as whales, dolphins and porpoises, or IMMAs (Important Marine Mammal Areas).
“We wanted to give voice to the marine mammal scientific community—those interested in spatial protection for whales as well as to the whales and other marine mammals themselves,” says Erich Hoyt co-chair and co-founder of the Task Force with Giuseppe Notarbartolo di Sciara. “To do that,” Notarbartolo di Sciara adds, “we needed a simple but authoritative conservation tool that marine spatial planners, marine protected area practitioners, government, industry, conservation groups and scientists could use to give whales, dolphins and other marine mammals a place at the negotiating table. That way, at least there could be a chance of gaining protected habitat.”
Despite celebrating the 10th anniversary of the working group, some important areas for marine mammals are already at risk. In the Black Sea, six IMMAs created around the habitat of unique subspecies of threatened dolphins and porpoises along the Ukrainian coast now find themselves in the middle of a war zone. Black Sea harbour porpoises (Phocoena phocoena relicta), bottlenose (Tursiops truncates ponticus) and common dolphins (Delphinus delphis ponticus) are increasingly being found stranded or dead at sea amidst floating mines laid in the Black Sea, and following the devastation caused by blowing up the Kakhovka Dam and other disasters from the ongoing war. In the Upper Gulf of California IMMA, the vaquita porpoise (Phocoena sinus) has been reduced to an estimated 10 individuals despite numerous efforts to save the species from extinction. It may be only a matter of a few years before it disappears forever.
“Here we are on the 10-year anniversary of the founding of the Task Force,” says Task Force deputy chair Gill Braulik, “and we’re already seeing severe habitat degradation in some of these IMMAs and the prospect of one species going extinct.”
To date, the Task Force has examined 72% of the ocean and identified 242 Important Marine Mammal Areas, or IMMAs. The Task Force membership itself has grown, currently with more than 60 members spread across the world. Each IMMA has gone through an expert nomination process from scientists followed by peer review. Nearly 300 scientists have been involved in one or more of the week-long workshops held now in 10 regions, thereafter, becoming enrolled as IMMA ambassadors, the keenest of which volunteer as IMMA coordinators for their region.
“One of these regions is the Northern Adriatic,” says Dr. Tilen Genov of the Morigenos, one of the coordinators of the working group for the Mediterranean. The Northern Adriatic has been identified as an important area for marine mammals based on research by the Morigenos and colleagues from Italy and Croatia.
IUCN Task Force continues to expand its work collaborating with various organizations and marine spatial managers to protect these crucial areas and prevent the loss of marine mammal biodiversity.
17-10-2023
Beyond Borders: Unravelling the Genetic Connectivity of Mediterranean Dolphins
Beyond Borders: Unravelling the Genetic Connectivity of Mediterranean Dolphins
Morigenos researchers, in collaboration with colleagues from various parts of the Mediterranean and elsewhere in Europe, conducted an extensive study on the population structure and genetic connectivity of bottlenose dolphins in the north-east Mediterranean Sea. This species is known to have high site fidelity, meaning they tend to stay in specific areas. The study focused particularly on the Adriatic Sea and neighbouring regions, drawing samples from Slovenia, Italy, Croatia, and Greece. The study was published in the journal Conservation Genetics.
Utilizing genetic analyses, the researchers gained insights into the population structure and genetic connectivity of these dolphins. Notably, the largest sample size in the study was provided from the Gulf of Trieste by Morigenos, providing critical data for understanding the population dynamics of these marine mammals. The study revealed high site fidelity of dolphins to specific regions, like the Gulf of Ambracia in Greece, Croatian island archipelagos, and the Gulf of Trieste. However, they also found that these populations are not completely isolated from each other; there is some movement and gene flow between them, suggesting a stable metapopulation. The sub-population from the Gulf of Ambracia stood out due to its distinctiveness, small size, isolation, and vulnerability to human-induced pressures. Interestingly however, the study also showed a genetic connectedness between dolphins from the Gulf of Ambracia and those from the Gulf of Trieste, which was unexpected.
This collaborative effort underscores the importance of international cooperation in marine research and conservation. Moreover, the researchers were able to link genetic data with information from various long-term studies, such as the one carried out in the Gulf of Trieste by Morigenos.
Understanding genetic connectivity and population dynamics is crucial for crafting effective conservation strategies that transcend national boundaries. Despite challenges in precisely delineating the boundaries of individual sub-populations due to sampling limitations and method resolution, the study emphasizes the significance of recognizing and preserving the unique characteristics of local dolphin communities with strong site fidelity across the diverse Mediterranean region.
The paper is available here.
08-09-2023
Artificial Intelligence to Identify Cetaceans
ARTIFICIAL INTELLIGENCE TO IDENTIFY CETACEANS
Morigenos participated in the development of new artificial intelligence tool for improved cetacean research. We contributed data to the development of a new deep learning model for cetacean identification in a global international study published in the renowned scientific journal Methods in Ecology and Evolution.
The ability to identify individuals plays a key role in cetacean research. Knowing who is who among dolphins or whales allows us to, among other things, track their migrations, determine their social structure and, most importantly, know how many of them there are. Many cetacean species carry various natural markings on their bodies that can be used to distinguish them from each other – like a fingerprint or a face in humans. Many species of dolphin, including bottlenose dolphins in the northern Adriatic, can be identified by natural markings on their dorsal fins. Some other species, such as the humpback whale, can be identified by the natural patterns on the underside of the tail fluke. This method is called photo-identification, because researchers take photographs of the animals and use the natural markings to identify them.
But carefully examining thousands and thousands of photographs is a painstaking and time-consuming task. Scientists need to make sure they have as large a set of relevant photographs as possible. At the same time, the identification of individuals must also be precise and accurate if the data are to be reliable and useful. In recent years, there have been major advances in the use of artificial intelligence to identify human faces and different animals individually, but new models usually need to be developed for each species. In this new study, 56 researchers from 6 continents joined forces to develop a new model for multi-species identification of cetaceans. The study involved 25 cetacean species from around the world, including bottlenose dolphins of the Gulf of Trieste, which Morigenos has been studying for more than 20 years.
»From a conservation standpoint it is really useful to be able to recognize the same individuals over time because you can see what areas the individuals use« said Philip Patton, a PhD student at the University of Hawaii and lead author of the study. »You can also use this information to estimate population size and population trends.«
The new model is based on human face recognition technology. It has proven to be very reliable, not just for one species, but for several different species of cetaceans.
»This new approach to cetacean identification will have an impact on the efficiency of photo-identification data processing on a global scale,« said Dr Tilen Genov of Morigenos, co-author of the study. »It will also help our work here in the northern Adriatic, as it will make our work more efficient and faster by automating the processing of the data.«
This model will also be applicable to other species, both marine and terrestrial. The model is freely available as code on GitHub and as a graphical user interface on Happywhale.com.
Morigenos has been studying dolphins in the northern Adriatic since 2002, focusing on research on population size and distribution, behaviour, social and genetic structure, and the impact of human activities on dolphins, and has also been involved in the study of cetaceans elsewhere in the world.
The research article is freely available at: https://doi.org/10.1111/2041-210X.14167
01-08-2023
Programme for the 16th Dolphin Day
PROGRAMME FOR THE 16th DOLPHIN DAY
Morigenos – the Slovenian Marine Mammal Society organises the traditional Dolphin Day event in Piran for the 16th time.
This year you can join us to learn about the interesting world of dolphins, try out different research methods and take part in fun but educational activities.
The aim of the Dolphin Day event is to present research and conservation of dolphins in the Slovenian sea and to introduce the general public to dolphins and their life.
We look forward to seeing you there!
The event and the Dolphin Centre are sponsored by Luka Koper.
10-07-2023
Dolphin Day
16th DOLPHIN DAY IN PIRAN
Get ready for a good time at the 16th Dolphin Day in Piran! This year, you can join us to learn about the fascinating world of dolphins, try out different research methods, and take part in fun yet educational activities.
The aim of the Dolphin Day event is to present the research and conservation efforts focused on dolphins in the Slovenian sea and to introduce the general public to dolphins and their lives.
Stay tuned as the program will be revealed soon.
Don’t miss out on this fin-tastic event!
12
Recent Comments