Relaciones talla-peso y variación del gen mitocondrial COI en el cangrejo naranja de fango (Scylla olivacea) en cuatro localidades de manglar de Malasia peninsular

Autores/as

  • Murak Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia
    • Mohammad Ekramul Haque Faculty of Fisheries and Aquaculture Science, Universiti Malaysia Terengganu, Terengganu, Malaysia https://orcid.org/0000-0002-9124-0493
      • Cher Chien Lau Higher Institution Centre of Excellence (HICoE), Institute of Climate Adaptation and Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia https://orcid.org/0000-0001-6551-2603
        • Muhammad Sajjad Ahhmad Marine Technology Center, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor Bahru, Johor, Malaysia
          • Mohammad Asmat-Ullah Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia
            • Hanafiah Fazhan Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia - STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
              • Kuo-Wei Lan Department of Environmental Biology, Fisheries Science, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung, 20224, Taiwan, China
                • Khor Waiho Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia - STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
                  • Hongyu Ma Guangdong Provide Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
                    • Mhd Ikhwanuddin Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia - STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China - Faculty of Fisheries and Marine, Campus C, Airlangga University, Mulyorejo, Surabaya 60115, Indonesia

                      DOI:

                      https://doi.org/10.47193/mafis.4012027010105

                      Palabras clave:

                      Pesquerías de cangrejo de fango, alometría del tamaño corporal, haplotipos mitocondriales, genética pesquera, cangrejo de manglar

                      Resumen

                      Comprender la variación en la alometría del tamaño corporal y la diversidad genética del cangrejo de fango naranja (Scylla olivacea) es importante para una gestión pesquera y una conservación eficaces. Este estudio evaluó las relaciones longitud-peso (RLP) y la diversidad genética de la subunidad I del citocromo c oxidasa mitocondrial (COI) en muestras de S. olivacea recolectadas en una única ocasión en cuatro ecosistemas de manglar (cuatro localidades; 28 individuos por localidad) a lo largo de las costas Este y Oeste de Malasia peninsular. Se analizaron datos de anchura del caparazón y peso corporal para caracterizar los patrones de crecimiento específicos de cada localidad, mientras que se utilizaron secuencias mitocondriales (COI) para evaluar la diversidad y la estructura genéticas poblacional. El exponente alométrico (b) de las RLP varió entre las localidades de muestreo, oscilando entre 2,160 y 3,694, con coeficientes de determinación (R2) de entre 0,809 y 0,971. El análisis de 112 secuencias mitocondriales COI reveló 58 haplotipos con una alta diversidad haplotípica (Hd = 0,955-0,973) y una diversidad nucleotídica relativamente baja (π = 0,009-0,011). El análisis de varianza molecular indicó que la mayor parte de la variación genética se distribuyó dentro de las localidades de muestreo (97,66%), mientras que solo el 2,34% se produjo entre las localidades. El índice de fijación bajo y no significativo (FST = 0,023; P = 0,079) sugirió una débil diferenciación genética basada en el marcador mitocondrial examinado. Estos resultados indican que existe una variación espacial en los patrones de crecimiento acompañada de una diferenciación mitocondrial limitada entre las localidades muestreadas; sin embargo, la variación fenotípica observada no puede atribuirse directamente a diferencias genéticas sin análisis ambientales y genómicos adicionales. Los hallazgos proporcionan una línea base descriptiva para las cuatro localidades y fechas de muestreo.

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                      Publicado

                      23-10-2026

                      Número

                      Sección

                      Documentos de Investigación Originales

                      Cómo citar

                      Murak, Ekramul Haque, M., Lau, C. C., Ahhmad, M. S., Asmat-Ullah, M., Fazhan, H., Lan, K.-W., Waiho, K., Ma, H., & Ikhwanuddin, M. (2026). Relaciones talla-peso y variación del gen mitocondrial COI en el cangrejo naranja de fango (Scylla olivacea) en cuatro localidades de manglar de Malasia peninsular. Marine and Fishery Sciences (MAFIS), 40(1). https://doi.org/10.47193/mafis.4012027010105