@inproceedings{fdi:010072121,
  title = {{D}ynamics of {E}thmalosa fimbriata in {S}outhern {S}enegal [r{\'e}sum{\'e}]},
  author = {{B}ald{\'e}, {B}.{S}. and {T}hiaw, {M}. and {N}gom, {F}. and {B}a, {K}. and {E}kau, {W}. and {S}adio, {O}. and {F}all, {M}. and {S}arr, {A}. and {D}iouf, {M}. and {B}rehmer, {P}atrice},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {B}onga {E}thmalosa fimbriata ({B}owdich, 1825) is the most third small pelagic exploited in the {S}enegalese waters and is commonly consumed locally. {S}tudies were conducted on the dynamics population of {E}. fimbriata. {M}onthly catches by landing sites of the {S}enegalese artisanal fisheries from 1996 to 2013 are provided by the {CRODT}. {T}hey are structured according to the fishing gear, per month and landing sites along the {S}outh {S}enegalese coast (between 14°36{N} to 13°36{N} and of 13°40{N} to 12°20 {N}). {G}rowth parameters were determined using the length-frequency distribution per month over the period 2014-2015: the asymptotic length "{L}infini"=38.2 cm total length, the asymptotic body weight {W}infini= 956 g, the rate by which {L}infini is approached {K}=0.48 and the theoretical age at zero length t0= -0.3; which are used to estimate the optimum length ({L}opt) of a cohort and its fecundity are maximum at 28.9 cm for an age topt=2.8 years. {W}e estimate the total mortality, {Z}=1.8 per year, natural mortality, {M}=0.4 per year and fishing mortality, {F}=1.4. {T}he current rate of exploitation ({E}) was found at 0.32 and the yield per recruit ({Y}/{R}) was estimated at 0.32, indicating that {E}. fimbriata stock is not fully exploited. {W}e report a seasonal variability in the recruitment and biomass of the {S}enegalese part of the stock, with a clear trend downward in the analysis period. {T}he seasonal signal shows three phases: between 1996 and 2001, recruitments are higher (50%) and took place from {N}ovember to {M}arch. {O}ver the period 2002 to 2008 (27%), the maximum values are observed {M}ay to {S}eptember; and finally between 2009 and 2013 (23%), the recruitment of {E}. fimbriata peak is observed in the same time of the first phase ({N}ovember to {M}arch). {E}. fimbriata is not fully exploited, that suggest a reallocation of the fishing effort on this species to decrease fishing effort on other species highly exploited as {S}ardinella aurita and so contribute to a better fisheries management of small scale activities in this area. {M}oreover that will allow to fit to the theoretical maximum yield per recruit ({Y}pot) for different species targeted by the same fishermen can prevent stock collapse.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {SENEGAL} ; {ATLANTIQUE}},
  numero = {},
  pages = {63--64},
  booktitle = {{I}nternational conference {ICAWA} 2016 : extended book of abstract : the {AWA} project : ecosystem approach to the management of fisheries and the marine environment in {W}est {A}frican waters},
  year = {2017},
  ISBN = {978-2-9553602-0-5},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072121},
}