@article{fdi:010095536, title = {{M}olecular assessment of {U}lvophyceae reveals cryptic diversity and new records of macroalgal species in {S}enegal}, author = {{D}iop, {M}. {S}. and {W}einberger, {F}. and {K}unzel, {S}. and {N}diaye, {W}. {N}. and {M}baye, {M}. {S}. and {D}iedhiou, {F}. and {F}ricke, {A}. and {Q}uack, {B}. and {B}ousso, {N}. {C}. and {B}olchi, {G}. and {F}all, {S}. and {N}oba, {K}. and {B}rehmer, {P}atrice}, editor = {}, language = {{ENG}}, abstract = {{S}ome {U}lvophyceae are cryptic due to their morphological plasticity and lack of distinct traits. {C}onsequently, molecular approaches such as {DNA} barcoding and metabarcoding are essential for accurate species discrimination. {L}arge parts of the {A}frican coastline remain understudied in this respect. {I}n this study, {U}lvophyceae were collected from various substrates at 24 coastal sites along the {S}enegalese coast. {DNA} barcoding targeting the tuf{A} gene and metabarcoding targeting the rbc{L} gene were applied to these samples. {M}ost of the sequences obtained represented four species ({U}lva lactuca, {U}. compressa, {C}odium decorticatum and {C}. isthmocladum) already reported in {S}enegalese species inventories. {H}owever, the molecular assessment also confirmed the presence of {U}. ohnoi (described from {J}apan), {U}. tepida (distributed in the {I}ndo-{P}acific), {U}. chaugulei (previously reported from {I}ndia, {I}ran, {I}srael, {C}hina and {B}razil), {C}haetomorpha valida (described from {T}asmania, {A}ustralia), and a specimen similar in rbc{L} sequence to several {U}lva species originating from {N}ew {C}aledonia, {F}rench {P}olynesia, {I}ndia and {C}hina, i.e. {S}outh {P}acific, {I}ndian {O}cean and {S}outh {C}hina {S}ea. {A}dditionally, the {M}editerranean species {B}ryopsis muscosa has reached {S}enegal. {M}orphological identification also suggested the presence of {C}aulerpa chemnitzia var. turbinata and {C}aulerpa chemnitzia var. laetevirens in {W}est {A}frica. {T}he challenges of morphological identification, particularly for {U}lvophyceae, are evident, emphasizing the necessity of molecular data for accurate species discrimination. {T}he detection of previously unrecorded species raises questions about whether their presence in {S}enegal results from global change, such as climate shifts and increased maritime transport, or the limitations of past morphological inventories. {F}urther investigations should focus on clarifying the taxonomy of key genera ({C}ladophora, {C}aulerpa, {B}ryopsis, {C}odium and {C}haetomorpha) through broader sampling and the application of advanced molecular markers to better understand {S}enegal's {U}lvophyceae biodiversity and facilitate monitoring future changes in species composition due to environmental shifts or anthropogenic pressures.}, keywords = {{B}arcoding cryptic species ; metabarcoding ; morphological identification ; rbc{L} ; tuf{A} ; {U}lvophyceae ; {SENEGAL}}, booktitle = {}, journal = {{E}uropean {J}ournal of {P}hycology}, volume = {[{E}arly access]}, numero = {}, pages = {[15 p.]}, ISSN = {0967-0262}, year = {2025}, DOI = {10.1080/09670262.2025.2568730}, URL = {https://www.documentation.ird.fr/hor/fdi:010095536}, }