24 documents found, page 1 of 3
Nutrient input from green turtle eggs and hatchlings in a west Africa Island an...
Ferreira Raposo, Cheila Sofia; Patrício, Ana Rita; Catry, Paulo; Barbosa, Castro; Camará, Assana; Regalla, Aissa; Rebelo, RuiSea turtle nesting brings marine-derived nutrients into sandy beach ecosystems, potentially influencing their dynamics. We investigated nutrient input from green turtle <jats:italic>Chelonia mydas</jats:italic> eggs and hatchlings into coastal habitats in Guinea-Bissau, West Africa. We assessed two islands within the João Vieira-Poilão Marine National Park (‘JVPMNP’), with contrasting sea turtle nesting density...
The first record of Lysmata rauli Laubenheimer and Rhyne, 2010 (Decapoda: Carid...
Wirtz, Peter; Moura, Carlos; Nhanquê, Filipe T.; Barbosa, Castro; Serrao, Ester A.Here we report the first record of the shrimp Lysmata rauli Laubenheimer and Rhyne, 2010 in the eastern Atlantic, from the intertidal at Kere Island, Bijag & oacute;s archipelago, Guinea-Bissau.
Hotspot of exotic benthic marine invertebrates discovered in the tropical east ...
Moura, Carlos; Wirtz, Peter; Nhanquê, Filipe T.; Barbosa, Castro; Serrao, Ester A.This study aimed to explore and document putative exotic marine benthic invertebrate species in the Bijag & oacute;s Archipelago, Guinea-Bissau, to enhance understanding of marine biodiversity and address the extent of marine species introductions. The research was conducted in the Bijag & oacute;s Archipelago, a UNESCO Biosphere Reserve located in Guinea-Bissau. The study involved the region's first scuba-divi...
Atlantic connectivity of a major green sea turtle Chelonia mydas foraging aggre...
Patrício, Ana Rita; Coveney, Sophia A.; Barbanti, Anna; Barbosa, Castro; Broderick, Annette; El’Bar, Nahi; Godley, Brendan; Hancock, Joana M.ABSTRACT: Understanding population connectivity is paramount for effective conservation. While genetic tools have elucidated sea turtle migration patterns, notable data gaps limit our understanding of ocean-wide connectivity, especially regarding east Atlantic green turtles. We characterized the genetic composition of a globally important green turtle foraging aggregation at the Banc d’Arguin, Mauritania, incor...
Inter-island nesting dynamics and clutch survival of green turtles Chelonia myd...
Raposo, Cheila; R., Rebelo; Catry, Paulo; Ferreira-Airaud, Betania; Barbosa, Castro; Garcia, Tumbulo Bamba; Regalla De Barros, Aissa; Sá Sampaio, ManuelUnderstanding spatial heterogeneity in reproductive success among at-risk populations facing localised threats is key for conservation. Sea turtle populations often concentrate at one nesting site, diverting conservation efforts from adjacent smaller rookeries. Poilão Island, Bijagós Archipelago, Guinea-Bissau, is a notable rookery for green turtles Chelonia mydas within the João Vieira-Poilão Marine National P...
Inter-island nesting dynamics and clutch survival of green turtles Chelonia myd...
Raposo, Cheila; Sampaio e rebelo, Rui; Catry, Paulo; Ferreira-Airaud, Maria Betânia; Barbosa, Castro; Garcia, Tumbulo Bamba; Regalla, AissaUnderstanding spatial heterogeneity in reproductive success among at-risk populations facing localised threats is key for conservation. Sea turtle populations often concentrate at one nesting site, diverting conservation efforts from adjacent smaller rookeries. Poilão Island, Bijagós Archipelago, Guinea-Bissau, is a notable rookery for green turtles Chelonia mydas within the João Vieira-Poilão Marine National P...
Range extension for conopea saotomensis (crustacea; cirripedia: archaeobalanida...
Moura, Carlos; Wirtz, Peter; Nhanquê, Filipe T.; Barbosa, Castro; Serrao, Ester A.; Syoc, Robert VanBarnacles of the genus Conopea are obligate epibionts of gorgonians and antipatharians. The species Conopea saotomensis Carrison-Stone et al. 2013, previously only known from the islands of S & atilde;o Tom & eacute; and Pr & iacute;ncipe and the coast of Gabon, is reported from the Bijag & oacute;s archipelago, Guinea-Bissau, based on morphological examination and DNA barcoding of specimens. The new record ext...
Spatial distribution of inter-nesting green turtles from the largest Eastern At...
Raposo, Cheila; Mestre, Julie; Rebelo, Rui; Regalla De Barros, Aissa; Davies, Alasdair; Barbosa, Castro; Patrício, Ana RitaUnderstanding the spatial distribution of wildlife is fundamental to establish effective conservation measures. Tracking has been key to assess movement patterns and connectivity of sea turtles, yet some regions of great significance are largely understudied. We tracked 44 green turtles from the largest rookery in the Eastern Atlantic, on Poilão Island, Guinea-Bissau, during 2018 through 2020, to assess their i...
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...
Long range gene flow beyond predictions from oceanographic transport in a tropi...
Tavares, Ana I; Assis, Jorge; Larkin, Patrick D.; Creed, Joel C.; Magalhães, Karine; Horta, Paulo; Engelen, Aschwin; Cardoso, Noelo; Barbosa, CastroThe transport of passively dispersed organisms across tropical margins remains poorly understood. Hypotheses of oceanographic transportation potential lack testing with large scale empirical data. To address this gap, we used the seagrass species, Halodule wrightii, which is unique in spanning the entire tropical Atlantic. We tested the hypothesis that genetic differentiation estimated across its large-scale bi...