{"refrec":{"BRefID":245394,"RR":"<b>Kolling, J.A.; Ávila-da-Silva, A.O.</b> (2014). Evaluation of determinants of <i>Xiphopenaeus kroyeri</i> (Heller, 1862) catch abundance along a Southwest Atlantic subtropical shelf. <i>ICES J. Mar. Sci./J. Cons. int. Explor. Mer 71(7)</i>: 1793-1804. <a href=\"http://dx.doi.org/10.1093/icesjms/fst225\" target=\"_blank\">http://dx.doi.org/10.1093/icesjms/fst225</a>","BEntID":237079,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>ICES J. Mar. Sci./J. Cons. int. Explor. Mer 71(7)</i>: 1793-1804. <a href=\"http://dx.doi.org/10.1093/icesjms/fst225\" target=\"_blank\">http://dx.doi.org/10.1093/icesjms/fst225</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kolling, J.A.; Ávila-da-Silva, A.O.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kolling, J.A.; Ávila-da-Silva, A.O.","Englishabstract":"Generalized linear models were applied to identify factors affecting the capture rates (catch per unit effort, cpue) of <em>Xiphopenaeus kroyeri</em> and to estimate time-series data with standardized abundance indices. The adjusted models revealed that the most powerful vessels (with greater HP) were up to 3.5 times more efficient than vessels with less powerful engines. The seasonal variation of the resource changed from year to year, most likely due to variations in the recruitment season and the timing of temporary fishing bans. The variation of cpue was similar between the northern and southern sectors of the study area. In these, <em>X. kroyeri</em> abundances increased in the years 1996, 1997, 2001 and 2002, while in the central sector, the cpue fluctuated with a period duration of approximately two years. During the period, the relative abundance of the species displayed neither a decreasing nor an increasing trend, indicating that this has been harvested at stable levels. However, <em>X. kroyeri</em> stock was reduced by overfishing during the 1980s and exhibits variations in abundance that may occur in response to environmental fluctuations; thus, the harvesting of this species should be managed with extreme caution.                  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