@article{fdi:010048429, title = {{R}ecruitment patterns of young-of-the-year mugilid fishes in a {W}est {A}frican estuary impacted by climate change}, author = {{T}rape, {S}{\'e}bastien and {D}urand, {J}ean-{D}ominique and {G}uilhaumon, {F}. and {V}igliola, {L}aurent and {P}anfili, {J}acques}, editor = {}, language = {{ENG}}, abstract = {{W}ith the persistence of the sub-{S}aharan drought since the 1970s, the {S}ine {S}aloum estuary ({S}enegal) the second largest coastal {B}iosphere {R}eserve of {W}est-{A}frica - has become an "inverse estuary" and hypersaline (salinity> 60) in its upstream part. {A} one-year survey was conducted from {A}pril 2007 to {M}arch 2008 at eight sites distributed along the salinity gradient, to investigate the recruitment patterns of young-of-the-year mugilids in such an impacted ecosystem. {F}ishes were sampled monthly with a conical net and a beach seine in salinities ranging from 31 to 104. {S}amples were identified to the species level. {F}or the smallest individuals (<20 mm {SL}) a {PCR}-{RFLP} technique, developed on the mitochondrial 16{S} ribosomal {RNA} region, was used for identification. {A} total of 8438 juveniles belonging to six of the eight species of mugilids known for the tropical {E}astern {A}tlantic were collected: {M}ugil bananensis, {M}ugil cephalus, {M}ugil curema, {L}iza dumerili, {L}iza falcipinnis and {L}iza grandisquamis. {O}ne species, {L} dumerili, represented 89% of the total catch. {L}ength-frequency distributions revealed that {M}. cephalus and {L}. dumerili preferentially recruited during the dry season whereas the recruitment of {M}. curema, {M}. bananensis and {L}. falcipinnis generally occurred during the wet season. {M}inimal size at recruitment ranged from 9 to 19 mm {SL} depending on the species, the smallest size being that of {L} dumerili. {D}espite the general salinity increase in the estuary, most parts of the {S}ine {S}aloum were suitable for the juveniles. {O}nly the hypersaline area in the uppermost part of the estuary presented very low fish abundance for all species. {A}ccording to the species, small recruits (12-20 mm {SL}) were collected at salinities up to 47-78, suggesting that osmoregulatory capacities had been gained early during ontogenesis, possibly resulting from an adaptation of these populations to changing environmental conditions.}, keywords = {inverse estuary ; hypersaline ; {M}ugilidae ; juveniles ; habitat use ; {W}est {A}frica ; {SENEGAL} ; {SINE} {SALOUM}}, booktitle = {}, journal = {{E}stuarine {C}oastal and {S}helf {S}cience}, volume = {85}, numero = {3}, pages = {357--367}, ISSN = {0272-7714}, year = {2009}, DOI = {10.1016/j.ecss.2009.08.018}, URL = {https://www.documentation.ird.fr/hor/fdi:010048429}, }