Home » Wissensdatenbank » Year of publication » 2016 » Changes in the composition of ichthyoplankton assemblage and plastic debris in mangrove creeks relative to moon phases.

http://onlinelibrary.wiley.com/doi/10.1111/jfb.12838/full

http://onlinelibrary.wiley.com/wol1/doi/10.1111/jfb.12838/abstract

Lima, A. R. A., Barletta, M., Costa, M. F., Ramos, J. A. A., Dantas, D.
V., Melo, P. A. M. C., Justino, A. K. S. and Ferreira, G. V. B. (2015),
Changes in the composition of ichthyoplankton assemblage and plastic
debris in mangrove creeks relative to moon phases. Journal of Fish
Biology. doi: 10.1111/jfb.12838

Abstract
Lunar influence on the distribution of fish larvae, zooplankton and
plastic debris in mangrove creeks of the Goiana Estuary, Brazil, was
studied over a lunar cycle. Cetengraulis edentulus, Anchovia clupeoides
and Rhinosardinia bahiensis were the most abundant fish larvae (56·6%),
independent of the moon phase. The full moon had a positive influence on
the abundance of Gobionellus oceanicus, Cynoscion acoupa and Atherinella
brasiliensis, and the new moon on Ulaema lefroyi. The full and new moons
also influenced the number of zoeae and megalopae of Ucides cordatus,
protozoeae and larvae of caridean shrimps, and the number of hard and
soft plastic debris, both <5 and >5 mm. Micro and macroplastics were
present in samples from all 12 creeks studied, at densities similar to
the third most abundant taxon, R. bahiensis. Cetengraulis edentulus and
R. bahiensis showed a strong positive correlation with the last quarter
moon, when there was less zooplankton available in the creeks and higher
abundance of microplastic threads. Anchovia clupeoides, Diapterus
rhombeus, U. lefroyi and hard microplastics were positively associated
with different moon phases, when calanoid copepods, Caridean larvae and
zoeae of U. cordatus were highly available in the creeks. Cynoscion
acoupa, G. oceanicus and A. brasiliensis were strongly associated with
the full moon, when protozoeae of caridean shrimps and megalopae of U.
cordatus were also highly available, as were hard and soft
macroplastics, paint chips (<5 mm) and soft microplastics. The results reinforce the role of mangrove creeks as nursery habitats. The moon phases influenced the distribution of fish larvae species, zooplankton and plastic debris by changing their compositions and abundances in the mangrove creeks of the Goiana Estuary when under the influence of different tidal current regimes. Keywords: fish larvae; lunar cycle; microplastics; north-east Brazil; tropical estuary



Changes in the composition of ichthyoplankton assemblage and plastic debris in mangrove creeks relative to moon phases.

11. Mai 2016