Affiliation:
1. Mindoro State College of Agriculture and Technology, Victoria, 5205 Oriental Mindoro
2. The Marine Science Institute, University of the Philippines Diliman, Quezon City
Abstract
Age and growth dynamics of Conomurex luhuanus were investigated to determine the population structure. Age-specific change in shell shape determined with geometric morphometrics revealed discrimination of shape between 0-3 years old at 99–100% while 3–4 years old can be separated with 81% certainty. Using the age discrimination data, K and L∞ were estimated at 1.00 year-1 and 7.28 cm, respectively. Recruitment is bimodal with natural mortality (M) of 0.71 and fishing mortality (F) approximated at 3.92 year-1. The exploitation rate (E) is 0.85 year-1, indicating probable overharvesting of the population under study. The presence of a deep-water population, age-specific burying behavior, and bimodal recruitment pattern are possible resilience factors.
Publisher
National Fisheries Research and Development Institute
Reference39 articles.
1. Absalão RS, Henrique P, Silva DA, Paula TSD. 2005. Shell morphometrics in four species of Gadilidae (Mollusca, Scaphopoda) Brazil Southwestern Atlantic Ocean, Brazil. Revista Brasileira de Zoologia. 22(1):175–179. https://doi.org/10.1590/S0101-81752005000100020
2. Al-Barwani SM, Arshad A, Amin SMN, Japar SB, Siraj SS, Yap CK. 2007. Population dynamics of the green mussel Perna viridis from the high spat-fall coastal water of Malacca, Peninsular Malaysia. Fisheries Research. 84(2):147–152. https://doi.org/10.1016/j.fishres.2006.10.021
3. Cabanban, AS, Tajonera IJ, Palomares MLD. 2014. A short history of gleaning in Negros and Panay Islands, Visayas, Philippines. In: Palomares MLD, Pauly D, editors. Philippine Marine Fisheries Catches: A Bottom-up Reconstruction, 1950-2010. Fisheries Centre Research Reports. 22(1):105-117. https://www.seaaroundus.org/doc/publications/books-and-reports/2014/Palomares-and-Pauly-Philippines.pdf#%5B%7B%22num%22%3A14%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22FitR%22%7D%2C-151%2C9%2C762%2C814%5D
4. Cabral RB, Aliño PM, Lim MT. 2014. Modelling the impacts of fish aggregating
5. devices (FADs) and fish enhancing devices (FEDs) and their implications for managing small-scale fishery. ICES Journal of Marine Science. 71(7):1750-9. https://doi.org/10.1093/icesjms/fst229