geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Shark fisheries in the Southeast Pacific: A 61-year analysis from Peru


, : Shark fisheries in the Southeast Pacific: A 61-year analysis from Peru. F1000research 3: 164-164

Peruvian waters exhibit high conservation value for sharks. This contrasts with a lag in initiatives for their management and a lack of studies about their biology, ecology and fishery. We investigated the dynamics of Peruvian shark fishery and its legal framework identifying information gaps for recommending actions to improve management. Further, we investigated the importance of the Peruvian shark fishery from a regional perspective. From 1950 to 2010, 372,015 tons of sharks were landed in Peru. From 1950 to 1969, we detected a significant increase in landings; but from 2000 to 2011 there was a significant decrease in landings, estimated at 3.5% per year. Six species represented 94% of landings: blue shark ( Prionace glauca), shortfin mako ( Isurus oxyrinchus), smooth hammerhead ( Sphyrna zygaena), common thresher ( Alopias vulpinus), smooth-hound ( Mustelus whitneyi) and angel shark ( Squatina californica). Of these, the angel shark exhibits a strong and significant decrease in landings: 18.9% per year from 2000 to 2010. Peru reports the highest accumulated historical landings in the Pacific Ocean; but its contribution to annual landings has decreased since 1968. Still, Peru is among the top 12 countries exporting shark fins to the Hong Kong market. Although the government collects total weight by species, the number of specimens landed as well as population parameters (e.g. sex, size and weight) are not reported. Further, for some genera, species-level identification is deficient and so overestimates the biomass landed by species and underestimates the species diversity. Recently, regional efforts to regulate shark fishery have been implemented to support the conservation of sharks but in Peru work remains to be done.

US$19.90

PMID: 27635216

DOI: 10.12688/f1000research.4412.1


Other references

Mukunya, D.M.; Munthangya, P.M.; Esele, J.P., 1982: Bacterial blight of beans (Phaseolus vulgaris L.) in Kenya. Pseudomonas [syringae pv.] phaseolicola and Xanthomonas [campestris pv.] phaseoli and its var. fuscans were isolated from infected plants and from seed samples.

Morita, Y.; Kitaura, H.; Yoshimatsu, M.; Fujimura, Y.; Kohara, H.; Eguchi, T.; Yoshida, N., 2010: IL-18 inhibits TNF-alpha-induced osteoclastogenesis possibly via a T cell-independent mechanism in synergy with IL-12 in vivo. It has recently been reported that tumor necrosis factor (TNF)-alpha has the ability to accelerate osteoclastogenesis. We previously reported that the proinflammatory cytokine interleukin (IL)-18 inhibits TNF-alpha-mediated osteoclastogenesis in m...

Lorent, H., 1878: Ueber dem Mitteldarm von Cobitis fossilis, L. Archiv fuer Mikroskopische Anatomie, XV 429-441

Dmitrieva, N.V.; Farber, M.F.; Podzolkov, V.I.; Starovoĭtova, S.P., 1989: Suppression of the neuroeffector transmission of the sympathetic system. A geometrical model of inhibition of neuroeffector transmission of the sympathetic system was constructed on the basis of the polymetric method of registration of a complex of somatovegetative indices and multiparametric description of the effect...

Takahashi, K.; Naito, M.; Morioka, Y.; Schultz, L.D., 1993: Immunophenotypic and ultrastructural differentiation and maturation of nonlymphoid dendritic cells in osteopetrotic (op) mice with the total absence of macrophage colony stimulating factor activity. The effect of the op/op mutation on the development of DCs including IDCs in the thymus and peripheral lymphoid tissues and epidermal LCs or IDDCs was determined in order to assess the differentiation of such cells in vivo in the absence of M-CSF....

Benoit E.; Corbier A.; Dubois J M., 1985: Evidence for 2 transient sodium currents in the frog rana esculenta node of ranvier. Na current (INa) was monitored in isolated voltage-clamped frog nodes of Ranvier to analyze the pharmacological and kinetic properties of fast and slow phases of inactivation. Niflumic acid (0.1-10 mM) and tetrodotoxin [TTX] (0.3-30 nM) did not al...

Fagutao, F.F.; Yasuike, M.; Santos, M.D.; Ruangpan, L.; Sangrunggruang, K.; Tassanakajon, A.; Takahashi, Y.; Ueno, R.; Kondo, H.; Hirono, I.; Aoki, T., 2009: Differential gene expression in black tiger shrimp, Penaeus monodon, following administration of oxytetracycline and oxolinic acid. The intensification of shrimp farming systems has led to the spreading of a variety of bacterial and viral diseases that continue to plague the shrimp industry worldwide. Efforts to combat these pathogenic organisms include the use of immunostimul...

Polisson C.; Robinson D., 1992: Apol a unique restriction endonuclease from arthrobacter protophormiae which recognizes 5 raatty 3. Nucleic Acids Research 20(11): 2888

Peacock, C.D.; Olver, S.D.; Price, P., 1997: Effect of a retroviral immunodeficiency syndrome on murine cytomegalovirus-induced hepatitis. We have studied the effects of LP-BM5 MuLV-induced murine acquired immunodeficiency syndrome (MAIDS) on concomitant murine cytomegalovirus (MCMV) infection in the livers of C57BL mice. A delayed inflammatory response in livers of mice with MAIDS (...

Malizos, K.N.; Quarles, L.D.; Dailiana, Z.H.; Rizk, W.S.; Seaber, A.V.; Urbaniak, J.R., 2004: Analysis of failures after vascularized fibular grafting in femoral head necrosis. Evaluation of graft-host bone interactions after failed vascularized fibular grafting of femoral head necrosis may elucidate the reasons for failure of the procedure. According to the authors' study, the vascularized fibula implanted into the...