@article{fdi:010062025,
  title = {{P}elagic fish species assemblages in the southern {B}enguela},
  author = {{L}ouw, {G}. {G}. and {F}r{\'e}on, {P}ierre and {H}use, {G}. and {L}ipinski, {M}. {R}. and {C}oetzee, {J}. {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}atterns in the co-occurrence of small pelagic fish species within single shoals were investigated using data from 6 814 throws of commercial purse-seiners in {S}outh {A}frica. {A}ssuming that the throw composition reflected the true composition of the assemblage, it was shown that: (1) mixed pelagic assemblages were as prevalent as pure shoals; (2) assemblages of anchovy {E}ngraulis encrasicolus and sardine {S}ardinops sagax exhibited a seasonal distribution pattern; (3) there was a highly skewed species ratio in terms of abundance by mass; and (4) patterns in the size distributions of two-species shoals were complex and dependent on the {L}. and the relative abundance of the species concerned. {W}e hypothesise that the observed patterns reflect the 'net gain of the subordinate', whereby fish occurring in small numbers are less conspicuous and/or less energetically attractive for potential predators if they are smaller than the dominant component of the school. {I}f the subordinate fish grow larger than the dominant fish, this advantage persists. {P}otential sources of bias are alluded to but are not considered to have had a major impact on the conclusions reached, although they may form the basis for further work.},
  keywords = {{E}ngraulis encrasicolus (= {E}. capensis) ; {E}trumeus whiteheadi ; meeting ; point hypothesis ; mixed shoals ; oddity effect ; pelagic assemblages ; {S}ardinops sagax ; school trap hypothesis ; {T}rachurus capensis ; {AFRIQUE} {DU} {SUD}},
  booktitle = {},
  journal = {{A}frican {J}ournal of {M}arine {S}cience},
  volume = {36},
  numero = {1},
  pages = {69--84},
  ISSN = {1814-232{X}},
  year = {2014},
  DOI = {10.2989/1814232x.2014.897997},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062025},
}