8 documents found, page 1 of 1
Pilot studies for stock enhancement of purple sea urchins (Paracentrotus lividu...
Correia, Maria João; Lopes, Patrícia Mega; Santos, Pedro M.; Jacinto, David; Mateus, David; Maresca, Francesco; Quintella, Bernardo Ruivo; Cruz, TeresaIn the framework of stock enhancement, field experiments were conducted between March and July 2021 in rocky shores of Central Portugal to test the usefulness of refuges and calcein marking for juvenile sea urchins releases. Individuals with 10–20mmin test diameter were captured in nature and tagged through immersion in a calcein bath with a concentration of 150 mg L 1, during 48 hr. Artificial shelters were us...
Physical and chemical tagging methods for the sea urchin Paracentrotus lividus ...
Santos, Pedro M.; Quintella, Bernardo Ruivo; Jacinto, David; Gomes, Ana; Saldanha, Carolina; Lourenço, Sílvia; Lopes, Patrícia Mega; Correia, Maria JoãoThe sea urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata: Echinoidea) is an important economic resource in Europe, but intense harvesting has led to the collapse of several natural populations. Echinoculture, associated with restocking and stock enhancement practices, is an alternative to this problem. In these procedures, reliable individual identification through tagging is a valuable source of inf...
Movements of hatchery-reared dusky groupers released in a northeast atlantic co...
Silva, Ana Filipa; Horta E Costa, Barbara; Costa, José Lino; Pereira, Esmeralda; Marques, João Pedro; Castro, João J.; Lino, Pedro G.No-take areas are key instruments to promote the effectiveness of Marine Protected Areas (MPAs), particularly concerning the protection of endangered species such as the dusky grouper (Epinephelus marginatus). However, despite the establishment of no-take areas and the prohibition of catching this species in a southwestern Portuguese MPA (SACVMP—‘Sudoeste Alentejano’ and ‘Costa Vicentina’ Marine Park) since 201...
European lampreys: new insights on postglacial colonization, gene flow and spec...
Mateus, Catarina Sofia; Almeida, Pedro Raposo; Mesquita, Natacha; Quintella, Bernardo Ruivo; Alves, Maria JuditeIce ages are known to be the most dominant palaeoclimatic feature occurring on Earth, producing severe climatic oscillations and consequently shaping the distribution and the population structure of several species. Lampreys constitute excellent models to study the colonization of freshwater systems, as they commonly appear in pairs of closely related species of anadromous versus freshwater resident adults, thu...
Strong genomewide divergence between sympatric European river and brook lampreys
Mateus, Catarina Sofia; Stange, Madlen; Berner, Daniel; Roesti, Marius; Quintella, Bernardo Ruivo; Alves, Maria Judite; Almeida, Pedro RaposoLampreys, together with hagfishes, are the only extant representatives of jawless vertebrates and thus of prime interest for the study of vertebrate evolution [1]. Most lamprey genera occur in two forms with divergent life histories: a parasitic, anadromous and a non-parasitic, freshwater resident form [2-8]. The taxonomic status of such 'paired species' is disputed, however. While indistinguishable at larval s...
MtDNA markers reveal the existence of allopatric evolutionary lineages in the t...
Mateus, Catarina Sofia; Almeida, Pedro Raposo; Quintella, Bernardo Ruivo; Alves, Maria JuditeThe Iberian Peninsula has been identified as an important glacial refugium during the Pliocene and Pleistocene epochs for the genus Lampetra, providing intermittent refuge and postglacial opportunities for colonization and expansion. We used mitochondrial DNA markers to investigate the processes that have shaped present-day genetic constitution of the genus Lampetra within the Iberian Peninsula. We surveyed 1,1...
Os ácidos gordos usados como bio marcadores para desvendar os segredos da fase ...
Lança, Maria João; Machado, Maria Ana; Mateus, Catarina Sofia; Quintella, Bernardo Ruivo; Almeida, Pedro RaposoThe agnathans probably arose as the first vertebrates about 530 million years ago, in Cambrian period and after the evolutionary “boom” of multicellular organisms. The genus Petromyzon comprises only one anadromous and parasitic species, Petromyzon marinus L., known as sea lamprey which is widely distributed on both sides of the North Atlantic. Sea lamprey migrates twice during its life cycle between freshwater...
Feeding strategy assessment through fatty acid profiles in muscle of adults sea...
Lança, Maria João; Machado, Maria; Ferreira, Rui; Alves-Pereira, Isabel; Quintella, Bernardo Ruivo; Almeida, Pedro RaposoFatty acid signature of sea lamprey Petromyzon marinus (L.) muscle were used as a tool to detect feeding strategies used during the species parasitic marine trophic phase. Adult sea lampreys were collected near the river mouth of six Portuguese river basins (i.e. Minho, Lima, Douro, Vouga, Mondego and Tagus) and muscle fatty acid profile characterized. The analysis on fatty acid composition of muscle neutral li...