@article{fdi:010065300, title = {{A}lexandrium pacificum {L}itaker sp. nov. ({G}roup {IV}) : resting cyst distribution and toxin profile of vegetative cells in {B}izerte {L}agoon ({T}unisia, {S}outhern {M}editerranean {S}ea)}, author = {{F}ertouna-{B}ellakhal, {M}. and {D}hib, {A}. and {F}athalli, {A}. and {B}ellakhal, {M}. and {C}homerat, {N}. and {M}asseret, {E}stelle and {L}aabir, {M}ohamed and {T}urki, {S}. and {A}leya, {L}.}, editor = {}, language = {{ENG}}, abstract = {{A} high spatial resolution sampling of {A}lexandrium pacificum cysts, along with sediment characteristics (% {H}2{O}, % organic matter ({OM}), granulometry), vegetative cell abundance and environmental factors were investigated at 123 study stations in {B}izerte {L}agoon ({T}unisia). {M}orphological examination and ribotyping of cells obtained from a culture called {ABZ}1 obtained from a cyst isolated in lagoon sediment confirmed that the species was {A}. pacificum. {T}he toxin profile from the {ABZ}1 culture harvested during exponential growth phase was simple and composed of the {N}-sulfocarbamoyl toxins {C}1 (9.82 pg toxin cell(-1)), the {GTX}6 (3.26 pg toxin cell(-1)) and the carbamoyl toxin {N}eo-{STX} (0.38 pg toxin cell(-1)).{T}he latter represented only 2.8% of the total toxins in this strain. {H}igh abundance of {A}. pacificum cysts correlated with enhanced percentages of water and organic matter in the sediment. {I}n addition, sediment fractions of less than 63 mu m were examined as a favorable potential seedbed for initiation of future blooms and outbreaks of {A}. pacificum in the lagoon. {A} significant difference in the cyst distribution pattern was recorded among the lagoon's different zones, with the higher cyst abundance occurring in the inner waters. {A}lso, no correlation due to the specific hydrodynamics of the lagoon was observed in the spatial distribution of {A}. pacificurn cysts and vegetative cells.}, keywords = {{A}lexandrium pacificum {L}itaker sp nov ({A}lexandrium catenella-group {IV} ({W}hedon & {K}ofoid) {B}alech) ; {C}ysts ; {V}egetative cells ; {R}ibotype ; {T}oxin profile ; {M}apping ; {TUNISIE} ; {MEDITERRENEE} ; {BIZERTE}}, booktitle = {}, journal = {{H}armful {A}lgae}, volume = {48}, numero = {}, pages = {69--82}, ISSN = {1568-9883}, year = {2015}, DOI = {10.1016/j.hal.2015.07.007}, URL = {https://www.documentation.ird.fr/hor/fdi:010065300}, }