ECOLOGICAL INSIGHTS INTO MUD LOBSTERS: MORPHOLOGICAL CHARACTERISTICS AND POPULATION DYNAMICS OF THALASSINA SPECIES

Abstract

This study investigated the morphological characteristics, abundance, density, and frequency of Thalassina anomala and Thalassina spinosa (locally referred to as "Manla") in the mangrove ecosystems of Dipolog City, Zamboanga del Norte. Employing a mixed-methods approach, the research utilized a line-plot sampling technique (plots measuring 3 m × 5 m) to collect both quantitative and qualitative data on these mud lobster species. Key morphological characteristics—including color, length, and weight—were documented, revealing distinct traits for each species. The findings indicated an abundance of 140 individuals, a density of 0.93 individuals per square meter, and occurrence in all sampling plots (frequency = 10), underscoring the stable presence of these species in the study area. The study emphasizes the ecological significance of mud lobsters and highlights the need for further research across diverse mangrove ecosystems to enhance understanding and inform conservation strategies. Moreover, strict enforcement of regulations pertaining to the protection and conservation of aquatic species is essential to support biodiversity within these habitats.