Comparative analysis of population parameters in Nemipterus species

Rahman, Mohammad Mustafizur and Daud Laksamana, Ummi Fatimah (2023) Comparative analysis of population parameters in Nemipterus species. In: International Anatolian Scientific Research Congress, Kars, Turkey.

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Abstract

Understanding fish population parameters is useful for proper guidelines in fisheries management. Unfortunately, the population parameters of Nemipterus species are not wellunderstood. Nemipterus species, locally known as Kerisi, is one of the most popular and economically important food fish in many Asian countries including Malaysia, where it is an important coastal demersal fisheries resource. Nemipterus furcosus, Nemipterus tambuloides,and Nemipterus nematophorus are widely available on the east coast of peninsular Malaysia although Nemipterus encompasses more than 50 nominal species worldwide. Nemipterus furcosus, N. tambuloides, and N. nematophorus are morphologically almost similar. Therefore, a 12-month (Nov 2020 - Oct 2021) study was conducted to understand some population parameters and morphological differences among these species on the east coast of peninsular Malaysia. Monthly Nemipterus furcosus, N. tambuloides, and N. nematophorus were randomly sampled from commercial fishing vessels landed at the landing center (LKIM) close to Kuantan city, Malaysia. Results indicated that ratios of male and female were statistically similar (p>0.05) in N. nematophorus population, female fish significantly (p3). N. tambuloides showed both isometric and positive allometric growth depending on sampling months. The temporal mean of condition factor (K value) of male N. furcosus and N. tambuloides did vary statistically, while female N. furcosus and N. tambuloides varied statistically with highest K value in July and March in N. furcosus and N. tambuloides, respectively. It varied for both male and female N. nematophorus with the highest value in December. Nemipterus furcosus had the highest fecundity compared to the other two studied fish. The spawning period for N. furcosus February-May, N. tambuloides November-June, and N. nematophorus January-May. Overall, the maturity size for male and female N. furcosus were17.2 cm and 15.4 cm, respectively. It was 13.2 cm and 13.8 cm for male and female N.nematophorus, respectively. Male and female N. tambuloides were observed to be sexuallymatured at the same size (16.2 cm). Male N. nematophorus are morphologically differentcompared to female N. nematophorus. Discriminant function analysis (DFA) results showedthat the head region of Nemipterus species largely contributes to the morphologicalidentification of these three studied species. Our observed results would be useful for a properguideline in fisheries management particularly for determining the permissible time andminimum length for the catch in order to achieve sustainable exploitation.

Item Type:	Proceeding Paper (Invited Papers)
Uncontrolled Keywords:	Nemipterus furcosus; Nemipterus tambuloides; Nemipte nematophorus; Population parameters; Maturity; Spawning
Subjects:	S Agriculture > SH Aquaculture. Fisheries. Angling
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Marine Science
Depositing User:	Dr. Mohammad Mustafizur Rahman
Date Deposited:	21 Aug 2025 09:16
Last Modified:	21 Aug 2025 09:16
URI:	http://irep.iium.edu.my/id/eprint/122786

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