taxonID	type	description	language	source
03F387A9042C645FFC91FBF3FC3AA1A3.taxon	description	Phylogenetic analysis of the 28 S rDNA region, using the Kimura 2 - parameter model, grouped the sequence of strain of PNCETMAR- 2 into a well-supported clade (bootstrap = 100) with the sequence strain of PNCETMAR- 1 (Figure 6). These two sequences showed a degree of genetic divergence of 0.02. Both sequences in this study diverged from the five sequences identified as P. cf. norrisianum from the study of Chomérat et al. (2019), with a genetic distance of 0.22 with respect to the sequences in this study, that were also separated from the P. lima sequences with a genetic distance of 0.29. In contrast, employing the Kimura 2 - parameter model, the PNCETMAR- 2 (PQ 182182) strain sequence of the ITS region clustered with those of P. cassubicum (EU 927557) and Prorocentrum sp. (FJ 160593) with a 100 % bootstrap support, and genetic distances of 0.030 and 0.032, respectively (Figure 7).	en	Ramos-Santiago, Research Article Ana Emilia, Villa-Arce, Gema V., Leyva-Valencia, Ignacio, Okolodkov, Yuri, Band-Schmidt, Christine J. (2025): Identification and growth of Prorocentrum cf. cassubicum (Dinoflagellata: Prorocentraceae) from Bahía de La Paz: first record for the Gulf of California. Botanica Marina (Warsaw, Poland) 68 (4): 375-388, DOI: 10.1515/bot-2025-0010, URL: https://doi.org/10.1515/bot-2025-0010
03F387A904226450FC91FE5FFE63A5DA.taxon	description	Numerous experiments have been carried out in the laboratory with various strains under different conditions where it has been determined that temperature is the main factor affecting their growth, registering growth rates between 0.30 and 0.75 divisions day − 1 and maximum biomasses of 600 to 70,000 cells ml − 1 (Grigoriyan et al. 2024). Several species of Prorocentrum meet the characteristics of being halotolerant and euryhaline (Glibert 2020). More knowledge of epibenthic species is needed to understand their physiology, life cycles, nutrition, and the environmental factors that regulate their growth. Acknowledgments: The authors thank L. E. Gómez-Lizárraga for the SEM service at UNAM and D. A. Huerta-Quintanilla (CINVESTAV-IPN) for obtaining SEM micrographs, E. Mendez (University of Tennessee, Knoxville, TN, USA) and M. M. Gowing (Seattle, WA, USA) for language edition support, and A. F. Krakhmalnyi (Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Kiev, Ukraine) for translation from Polish. Research ethics: Not applicable. Informed consent: Not applicable. Author contributions: A. E. Ramos-Santiago: conceptualization; research; methodology; data curation; formal analysis; writing – original draft preparation; writing – review & editing. G. V. Villa-Arce: methodology; data curation; formal analysis. I. Leyva-Valencia: funding acquisition; methodology; supervision; review & editing. Y. B. Okolodkov: conceptualization; research; methodology; writing – review & editing; supervision. C. J. Band-Schmidt: conceptualization; funding acquisition; methodology; supervision; writing – review & editing. All authors have accepted responsibility for the entire content of this manuscript and approved its submission. Use of Large Language Models, AI and Machine Learning Tools: None declared. Conflict of interest: The authors state no conflict of interest. Research funding: This study was financed with the projects CONAHCyT FOMIX-Yucatán No. 2008 - 108160 and CONAHCyT LAB- 2009 - 01 No. 123913 (P. Quintana-Owen from CINVESTAV-IPN), CONAHCyT PRONAII, PRONACES SSyS No. 319104, and the institutional project SIP- 2024 - 0544, SIP 2025 - 1372 and SIP 2189. A. E. R. S. was recipient to the scholarship 1151607 from CONAHCyT and A 240310 from BEIFI. C. J. B. S. is a COFAA and EDI recipient. Data availability: DNA sequences, GenBank accessions. Strain PNCETMAR- 1: PQ 182180 (28 S), PQ 182182 (ITS). Strain PNCETMAR- 2: PQ 182181 (28 S).	en	Ramos-Santiago, Research Article Ana Emilia, Villa-Arce, Gema V., Leyva-Valencia, Ignacio, Okolodkov, Yuri, Band-Schmidt, Christine J. (2025): Identification and growth of Prorocentrum cf. cassubicum (Dinoflagellata: Prorocentraceae) from Bahía de La Paz: first record for the Gulf of California. Botanica Marina (Warsaw, Poland) 68 (4): 375-388, DOI: 10.1515/bot-2025-0010, URL: https://doi.org/10.1515/bot-2025-0010
