Publications by authors named "D Righton"
Understanding the spatial ecology of commercially exploited species is vital for their conservation. Atlantic bluefin tuna (Thunnus thynnus, ABT) are increasingly observed in northeast Atlantic waters, yet knowledge of these individuals' spatial ecology remains limited. We investigate the horizontal and vertical habitat use of ABT (158 to 241 cm curved fork length; CFL) tracked from waters off the United Kingdom (UK) using pop-up satellite archival tags (n = 63).
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- Biologging technology has been employed to track the behaviors and migrations of various wild animals, including a notable event involving the predation of an Atlantic bluefin tuna by an orca.
- The study details a 19-minute predation sequence where the tuna displayed high activity levels during its capture and subsequent handling by the orca.
- Unique datasets collected from both the tuna and orca give valuable insights into their energetic behaviors and patterns of interaction in the ocean.
Article Synopsis
- Recent research on mature European sea bass (Dicentrarchus labrax) in UK waters is updating our knowledge from earlier studies in the 70s through 90s by utilizing modern technology.
- A total of 171 sea bass were tagged with electronic devices to track their movements, revealing that they traveled an average of 172 km from where they were released, often returning to beaches or being caught in fisheries.
- Findings indicate notable seasonal migrations linked to temperature and depth changes, alongside evidence of potential year-round residency and spawning in the North Sea, highlighting the importance of this information for managing sea bass populations sustainably.
Technological advances in tracking methods enable the mapping of anguillid eel migration routes from continental habitats to their spawning sites in the ocean. However, the behaviour and orientation abilities of anguillids are still poorly understood, and have only rarely been studied on the continental shelf. Here we present the results of a study into the vertical and horizontal movement behaviour of 42 European eels (Anguilla anguilla L.
View Article and Find Full Text PDFRange expansions can lead to increased contact of divergent populations, thus increasing the potential of hybridization events. Whether viable hybrids are produced will most likely depend on the level of genomic divergence and associated genomic incompatibilities between the different entities as well as environmental conditions. By taking advantage of historical Baltic cod () otolith samples combined with genotyping and whole genome sequencing, we here investigate the genetic impact of the increased spawning stock biomass of the eastern Baltic cod stock in the mid 1980s.
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