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On the 7th June, the Azores Whale Lab provided practical exercises on photo-id and bioacoustics to the Master’ students (University of the Azores). They had the opportunity to collect photo-id pictures of common dolphins and to acoustically detect and locate sperm whales

Our study on fin whale food talk is mentioned in this month's National Geographic portuguese edition, on an interesting article about fin whales seen off the coast of Portugal https://t.co/pBnRryKWvc @MiriamRomagosa @OkeanosUac

In the afternoon (11th of June), the @AzWhaleLab headed to the high school “Escuela Secundaria Manuel de Arriaga” to present our work on understanding and protecting whales in the region, led by our colleague Daviana Berkowitz-Sklar @Daviberkos @sergiperezjorge @OkeanosUac

On Tuesday morning (11th of June), the @AzWhaleLab joined the Eco-Encontros event at elementary school “Escola Básica Integrada da Horta (Faial)” for a fun and educational marine life art activity. @OkeanosUac @Daviberkos

A reduction of prey size would require greater compensation to reach whales’ average daily metabolic requirements

The highest impact was on the decrease in prey size than on a reduction on prey size variability implying that foraging success rates are more sensitive to changes in average energy intake, than variability in energy intake.

A minimum foraging success rate of approximately 14% was necessary for female sperm whales to meet their energetic needs. Our results indicate that sperm whales can survive, exploit their habitat, and obtain enough energy to fulfil their energetic demands

The bioenergetic modelling approach used to simulate different prey structure scenarios: (1) decreased prey energy content and (2) decreased variability in prey energy content based on prey characteristics from analysis of stomach contents from historical whaling records.

Find the full study published led by @marianafpsilva in Ecology and Evolution here (Silva et al., 2024):

New paper on sperm whale reponses to changes in prey structure. In-situ foraging data was used to determine daily energy acquisition and to identify the minimum required foraging success rate and explore potential responses to environmental changes. Check the thread 🧵

Species showed some spatial or temporal partitioning, suggesting that species coexistence could play a key role in structuring the cetacean community in the region and in its ecological role. Thanks to @AzWhaleLab, Jérôme Spitz and Yann Planque at #Pelagis (@CNRS)

Niche overlaps occur mainly between species within the same guild, indicating some potential for trophic redundancy in the community.

Species were grouped into four trophic guilds, segregated mainly by trophic position (TP): low-TP guild with three zooplanktivore baleen whales, mid-TP guild with micronektivores, high-TP guild with micronekton and nekton consumers, and a cluster with false killer whales only.

Stable isotopes from 12 cetacean species were analysed. Isotopic niches are very diverse and suggest the use of diverse habitats and resources among species.

The @AzWhaleLab is happy to present the first description of the trophic structure of the cetacean community in the Azores, as revealed by their isotopic niches. Find the full study published in Frontiers in Marine Science here (Lebon et al., 2024):

More information on IMMAs: https://t.co/GYqEohWb2A https://t.co/AAGvVg4hxF

The @AzWhaleLab contributes to the creation of an Important Marine Mammal Area (IMMA) for the Azores encompass within an initiative that has created 33 new IMMAs in the North East Atlantic Ocean and Baltic Sea and was led by the @IUCN Marine Mammal Protected Areas Task Force

The @AzWhaleLab is happy to announce a recent paper on the evolution of fin whale songs in the North Atlantic published in @eLife  @MiriamRomagosa: Romagosa et al., 2024: https://t.co/UUiLsELSpf). @OkeanosUac

We just finished a mission to test the acoustic system boing developed by project OCEAN. @NavAwareness. Check out the official video of the mission: