10 documents found, page 1 of 1
Using fuorescent paint as an effective short-term marker in a high-density rook...
Madeira, Fernando Miguel; Sampaio e rebelo, Rui; Barbosa, Castro; Regalla, Aissa; Patrício, Ana RitaWe report on a short-term marking protocol that uses weather-resistant high-contrast fuorescent dyes and nondisruptive ultraviolet lights to effectively mark and distinguish between individual green turtles (Chelonia mydas). We feldtested our method in the largest green turtle nesting location in Africa, on Poilão Island i Guinea-Bissau, where it proved to be quick to apply and easy to detect, and non-disruptiv...
Red, gold and green: Microbial contribution of Rhodophyta and other algae to gr...
Díaz-Abad, Lucía; Bacco-Mannina, Natassia; Madeira, Fernando Miguel; EA, Serrao; Regalla, Aissa; Patrício, Ana R.; Frade, Pedro R.The fitness of the endangered green sea turtle (Chelonia mydas) may be strongly affected by its gut microbiome, as microbes play important roles in host nutrition and health. This study aimed at establishing environmental microbial baselines that can be used to assess turtle health under altered future conditions. We characterized the microbiome associated with the gastrointestinal tract of green turtles from G...
Fine-scale foraging segregation in a green turtle (Chelonia mydas) feeding grou...
Madeira, Fernando Miguel; Rebelo, Rui; Catry, Paulo; Neiva, João Guilherme; Barbosa, Castro; Regalla De Barros, Aissa; Patrício, Ana RitaGreen turtles (Chelonia mydas) are highly dependent on neritic foraging areas throughout much of their life. Still, knowledge of recruitment dynamics, foraging habits, and habitat use in these areas is limited. Here, we evaluated how the distribution and food preferences of green sea turtles from different life stages varied within a foraging aggregation. We focused on two islands in Guinea-Bissau, Unhocomo and...
Red, Gold and Green: Microbial Contribution of Rhodophyta and Other Algae to Gr...
Díaz-Abad, Lucía; Bacco-Mannina, Natassia; Madeira, Fernando Miguel; Serrao, Ester A.; Regalla, Aissa; Patrício, Ana R.; Frade, Pedro R.The fitness of the endangered green sea turtle (Chelonia mydas) may be strongly affected by its gut microbiome, as microbes play important roles in host nutrition and health. This study aimed at establishing environmental microbial baselines that can be used to assess turtle health under altered future conditions. We characterized the microbiome associated with the gastrointestinal tract of green turtles from G...
Fine-scale foraging segregation in a green turtle (Chelonia mydas) feeding grou...
Madeira, Fernando Miguel; Sampaio e rebelo, Rui; Catry, Paulo; Neiva, João; Barbosa, Castro; Regalla, Aissa; Patrício, Ana RitaGreen turtles (Chelonia mydas) are highly dependent on neritic foraging areas throughout much of their life. Still, knowledge of recruitment dynamics, foraging habits, and habitat use in these areas is limited. Here, we evaluated how the distribution and food preferences of green sea turtles from different life stages varied within a foraging aggregation. We focused on two islands in Guinea-Bissau, Unhocomo and...
Fine-scale foraging segregation in a green turtle (Chelonia mydas) feeding grou...
Madeira, Fernando Miguel; Rebelo, Rui; Catry, Paulo; Neiva, J.; Barbosa, Castro; Regalla, Aissa; Patrício, Ana RitaGreen turtles (Chelonia mydas) are highly dependent on neritic foraging areas throughout much of their life. Still, knowledge of recruitment dynamics, foraging habits, and habitat use in these areas is limited. Here, we evaluated how the distribution and food preferences of green sea turtles from different life stages varied within a foraging aggregation. We focused on two islands in Guinea-Bissau, Unhocomo and...
eDNA metabarcoding for diet analyses of green sea turtles (Chelonia mydas)
Díaz-Abad, Lucía; Bacco-Mannina, Natassia; Madeira, Fernando Miguel; Neiva, João; Aires, Tânia; Serrao, Ester A.; Regalla De Barros, AissaUnderstanding sea turtle diets can help conservation planning, but their trophic ecology is complex due to life history characteristics such as ontogenetic shifts and large foraging ranges. Studying sea turtle diet is challenging, particularly where ecological foraging observations are not possible. Here, we test a new minimally invasive method for the identifcation of diet items in sea turtles. We fngerprinted...
Fibropapillomatosis and the Chelonid Alphaherpesvirus 5 in Green Turtles from W...
Monteiro, Jessica; Duarte, Margarida; Amadou, Kidé; Barbosa, Castro; El Bar, Nahi; Madeira, Fernando Miguel; Regalla, Aissa; Duarte, Ana; Tavares, LuísFibropapillomatosis (FP) is a tumorigenic panzootic disease of sea turtles, most common in green turtles (Chelonia mydas). FP is linked to the chelonid alphaherpesvirus 5 (ChAHV5) and to degraded habitats and, though benign, large tumours can hinder vital functions, causing death. We analyse 108 green turtles, captured in 2018 and 2019, at key foraging grounds in Guinea-Bissau and Mauritania, West Africa, for t...
eDNA metabarcoding for diet analyses of green sea turtles (Chelonia mydas)
Díaz-Abad, Lucía; Bacco-Mannina, Natassia; Madeira, Fernando Miguel; Neiva, João; Aires, Tania; Serrao, Ester A.; Regalla, Aissa; Patrício, Ana R.Understanding sea turtle diets can help conservation planning, but their trophic ecology is complex due to life history characteristics such as ontogenetic shifts and large foraging ranges. Studying sea turtle diet is challenging, particularly where ecological foraging observations are not possible. Here, we test a new minimally invasive method for the identification of diet items in sea turtles. We fingerprint...
eDNA metabarcoding for diet analyses of green sea turtles (Chelonia mydas)
Díaz-Abad, Lucía; Bacco-Mannina, Natassia; Madeira, Fernando Miguel; Neiva, J.; Aires, Tania; Serrao, Ester; Regalla, Aissa; Patrício, Ana R.Understanding sea turtle diets can help conservation planning, but their trophic ecology is complex due to life history characteristics such as ontogenetic shifts and large foraging ranges. Studying sea turtle diet is challenging, particularly where ecological foraging observations are not possible. Here, we test a new minimally invasive method for the identifcation of diet items in sea turtles. We fngerprinted...