Results 11 to 20 of about 8,766 (205)

Tiburones

English Studies in Latin America: A Journal of Cultural and Literary Criticism
Nicholas Manganas
semanticscholar   +2 more sources

Conceptual frameworks and key questions for assessing the contribution of marine protected areas to shark and ray conservation. [PDF]

Conserv Biol, 2023
Abstract Marine protected areas (MPAs) are key tools in addressing the global decline of sharks and rays, and marine parks and shark sanctuaries of various configurations have been established to conserve shark populations. However, assessments of their efficacy are compromised by inconsistent terminology, lack of standardized approaches to assess how ...
Chin A, Molloy FJ, Cameron D, Day JC, Cramp J, Gerhardt KL, Heupel MR, Read M, Simpfendorfer CA.   +8 more
europepmc   +2 more sources

Reconstructing historical catch trends of threatened sharks and rays based on fisher ecological knowledge. [PDF]

Conserv Biol
Abstract Small‐scale fisheries often lack historical shark and ray catch information, hampering their management. We reconstructed historical catch trends and current fishing pressure by combining local ecological knowledge, satellite‐based vessel counts, and a short‐term landing‐site survey.
Leurs G, Jabado RW, Camará A, Dos Santos L, Nonque DM, Zuidewind TJ, Barry I, Campredon P, Blaschke B, de Boer K, Hijner N, Olff H, Pontes SL, Regalla A, Walsh MB, Govers LL.   +15 more
europepmc   +2 more sources

Status of Southeast Asia's marine sharks and rays. [PDF]

Conserv Biol, 2023
Abstract In Southeast Asia, elasmobranchs are particularly threatened. We synthesized knowledge from the peer‐reviewed and gray literature on elasmobranchs in the region, including their fisheries, status, trade, biology, and management. We found that 59% of assessed species are threatened with extinction and 72.5% are in decline; rays were more ...
Clark-Shen N, Chin A, Arunrugstichai S, Labaja J, Mizrahi M, Simeon B, Hutchinson N.   +6 more
europepmc   +2 more sources

Predictions of southern migration timing in coastal sharks under future ocean warming. [PDF]

Conserv Biol
Abstract Projected redistribution of marine species due to ocean warming may undermine current conservation efforts. Yet, there have been few studies on how ocean warming may alter migration timing. Across 5 years of acoustic telemetry data (2018–2022), we determined environmental drivers of southward migration timing for 6 migratory shark species from
Manz MH, Shipley ON, Cerrato RM, Hueter RE, Newton AL, Tyminski JP, Franks BR, Curtis TH, Fischer C, Zacharias JP, Scott C, Dunton KJ, Kneebone J, Peterson BJ, Scannell BJ, Dodd JF, Frisk MG.   +16 more
europepmc   +2 more sources

Linking extinction risk to the economic and nutritional value of sharks in small-scale fisheries. [PDF]

Conserv Biol
Abstract To achieve sustainable shark fisheries, it is key to understand not only the biological drivers and environmental consequences of overfishing, but also the social and economic drivers of fisher behavior. The extinction risk of sharks is highest in coastal tropical waters, where small‐scale fisheries are most prevalent.
Temple AJ, Berggren P, Jiddawi N, Wambiji N, Poonian CNS, Salmin YN, Berumen ML, Stead SM.   +7 more
europepmc   +2 more sources

Effects of protection on large-bodied reef fishes in the western Indian Ocean. [PDF]

Conserv Biol
Abstract Predatory and large‐bodied coral reef fishes have fundamental roles in the functioning and biodiversity of coral reef ecosystems, but their populations are declining, largely due to overexploitation in fisheries. These fishes include sharks, groupers, Humphead wrasse (Cheilinus undulatus), and Green Humphead parrotfish (Bolbometopon muricatum).
Samoilys M, Osuka KE, Roche R, Koldewey H, Chabanet P.   +4 more
europepmc   +2 more sources

Mitochondrial DNA patterns describe the evolutionary history of the bonnethead shark Sphyrna tiburo (Linneus 1758) complex in the western Atlantic Ocean. [PDF]

J Fish Biol
Abstract The apparent lack of physical barriers in the marine realm has created the conception that many groups have a constant gene flow. However, changes in ocean circulation patterns, glacial cycles, temperature, and salinity gradients are responsible for vicariant events in many fish species, including sharks.
Ochoa-Zavala M, Mar-Silva AF, Pérez-Rodríguez R, Palacios-Barreto P, Adams DH, Blanco-Parra MDP, Díaz-Jaimes P.   +6 more
europepmc   +2 more sources

Vulnerability of tropical fish communities across depth in the central Indian Ocean. [PDF]

Conserv Biol
Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Stefanoudis PV, de Villiers NM, Afzal MS, Amir H, Amjad F, Hashim AS, Jauharee AR, Palmer R, Rogers AD, Shimal M, Naeem S, Ahusan M, Woodall LC.   +12 more
europepmc   +2 more sources

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]

Ecol Evol
Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S, Raoult V, Slip DJ, Mas F, Laporta M, Pereyra I, Silveira S, Harcourt RG.   +7 more
europepmc   +2 more sources