16 documents found, page 1 of 2

Navegar os Oceanos à Boleia

Sabias que 99% das jamantas que podemos observar nos Açores durante o verão dão boleia a outros peixes? Num estudo recente realizado no Instituto Okeanos, foram analisadas centenas de imagens de jamantas (o hospedeiro) para compreender a sua relação com o simbionte (ou o “pendura”).

Global habitat predictions to inform spatiotemporal fisheries management: initi...

Tuna Regional Fishery Management Organizations (tRFMOs) are increasingly interested in spatiotemporal management as a tool to reduce interaction rates with vulnerable species. We use blue shark ( Prionace glauca ) as a case study to demonstrate the critical first steps in the implementation process, highlighting how predictions of global habitat for vulnerable life stages can be transformed into a publicly -acc...

The multi-annual residency of juvenile smooth hammerhead shark in an oceanic is...

The increased risk of local extinction becomes critical for sharks depending on the narrow and isolated coastal habitats of oceanic islands. This includes large pelagic oceanic sharks that use such habitats as nurseries, as previously hypothesized for the smooth hammerhead Sphyrna zygaena, the least known of cosmopolitan large hammerhead sharks. We used a combination of acoustic and satellite telemetry in a juv...

Reply to: Caution over the use of ecological big data for conservation

Reply to: Shark mortality cannot be assessed by fishery overlap alone

New generation of non-invasive tools to understand and manage large and iconic ...

New generation of non-invasive tools to understand and manage large and iconic sharks and rays; Nova geração de ferramentas não-invasivas para conhecer e gerir grandes tubarões e raias

The carnation revolution and workers' control

In this article we argue that the fundamental feature of the 1974/75 Portuguese revolution is the sociological struggle of social classes within companies and, above all, in large industrial units. We argue, in the context of a literature review, that this dispute should be defined as workers' control, distinguishing it from its opposite - production control, that is, state-national control - or from forms of c...

Intra- and interspecific associations in two predatory reef fishes at a shallow...

the spatial dynamics of marine populations are shaped by habitat availability, environmental variability and individual interactions, particularly when multiple species share limited habitat such as patchy offshore reefs. the yellowmouth barracuda Sphyraena viridensis and the almaco jack Seriola rivoliana are the 2 most abundant bentho-pelagic reef predators in the Azores archipelago (central North Atlantic). T...

‘Solo datasets’: unexpected behavioural patterns uncovered by acoustic monitori...

A holistic understanding of the life-history strategies of marine populations is often hindered by complex population dynamics, exacerbated by an intricate movement ecology across their life history (Nathan et al. 2008; Parsons et al. 2008; Jeltsch et al. 2013). Movement patterns and spatial ecology can vary spatially and temporally for different reasons, mainly related to the organism’s life history and enviro...

Ten new records of marine fishes for São Tomé, West Africa

Three chondrichthyes: Rhincodon typus Smith, 1828; Mobula tarapacana (Philippi, 1892); and Mobula thurstoni (Lloyd, 1908), and seven teleosts: Beryx decadactylus Cuvier, 1829; Peristedion cf. cataphractum (Linnaeus, 1758); Coryphaena hippurus Linnaeus, 1758; Liopropoma emanueli Wirtz et Schliewen, 2012; Chromis cadenati Whitley, 1951; Chromis limbata (Valenciennes, 1833); and Makaira nigricans Lacepède, 1802 we...