@article{fdi:010089985,
  title = {{R}elationship between migratory behavior and environmental features revealed by genetic structure of {S}ardina pilcharduspopulations along the {M}oroccan {A}tlantic coast},
  author = {{C}hlaida, {M}. and {F}auvelot, {C}{\'e}cile and {E}ttahiri, {O}. and {C}harouki, {N}. and {E}layoubi, {S}. and {P}lanes, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e used genetic markers, namely allozymes, to study the genetic structure (stock unit) and the sardine stocks  movement  along the  {M}oroccan  {A}tlantic  coast  and  its  relationship  regarding  the  environmental  features,  especially  upwelling.  {I}n  this  study,  we  have  combined  previous  results  obtained  by  analyzing  eight  samples  collected during the spawning season (winter 2004) (chlaida et al.2008) and new data obtained by analyzing eight samples  gathered  during  the  feeding  season  (summer  2006).    {T}herefore,  we  compiled  765  individuals  from  an  earlier study and the 2006 summer sampling and compared seasons' results. {I}n winter, a substantial heterogeneity ({F}st  =0.205)  is  described,  with  a  significant  genetic  break  in  the  {A}gadir  {B}ay  (latitude  30°  48'  {N})  that  cuts  the  coastal sardine populations in the {M}oroccan {A}tlantic into two stocks (north and south). {I}n summer, the genetic structure showing two groups is maintained ({F}st= 0.135). {S}till, the genetic break separating the two stocks arises southward,  near  {T}arfaya  (latitude  28°08'10?  {N}),  suggesting  a  spreading  out  towards  the  south  of  the  northern  stocks.  {T}his  result  seems  to  be  related  to  the  sardine  movement  along  the  {M}oroccan  {A}tlantic  coast  regarding  reproduction needs in winter and for trophic reasons in summer. {T}he species' observed genetic break and seasonal activity along the {M}oroccan coast are expected to result from the {C}ape {G}hir {H}ydrological barrier, impermeable in winter and semi-permeable in summer. {T}his barrier comprises currents, gyres, and different mesoscale structures related to upwelling dominating in this zone.},
  keywords = {{MAROC} ; {ATLANTIQUE}},
  booktitle = {},
  journal = {{F}rontiers in {S}cience and {E}ngineering {I}nternational {J}ournal},
  volume = {11},
  numero = {1},
  pages = {75--86},
  ISSN = {2028-7615},
  year = {2021},
  DOI = {10.34874/{IMIST}.{PRSM}/fsejournal-v11i1.28802},
  URL = {https://www.documentation.ird.fr/hor/fdi:010089985},
}