Paulo Travassos's research while affiliated with Universidade Federal Rural de Pernambuco and other places

... Variations of these characteristics, which may differ among species of the same genus, have manifested in cranial endothermy (to buffer heat exchange for the brain and eyes) (Bres, 1993;Weng and Block, 2004), and/or endothermy for swimming (Klimley et al., 2002;Meekan et al., 2015;Harding et al., 2021). Other species have adapted behavioural traits that manifest in vertical oscillations through the water column to mediate unfavourable ambient water temperatures and exposure to hypoxic conditions that occur at depth where prey are located (Carey and Scharold, 1990;Gleiss et al., 2019;Arostegui et al., 2020;Andrzejaczek et al., 2022). Diving to access prey in deep dark water cools muscles and eyes that are needed for wide-ranging searches. ...

... For example, catch risk hotspots identified off the coast of Southwest Africa occur in a known potential blue shark nursery habitat off the coast of Namibia where a high catch density of immature sharks have been recorded by onboard observers (Coelho et al., 2018). Fishery-independent studies of juvenile blue sharks have also identified foraging habitats in the same area (Druon et al., 2022). Shortfin mako sharks (Endangered) share this risk hotspot with blue sharks in Southwest Africa (ICCAT jurisdiction), confirmed by onboard observer reports from Spanish longliners in the region (Dinkel and Sańchez-Lizaso, 2020). ...