Mortality and exploitation rate of some reef fish in Ternate Island Waters

Rumagia, Faizal; Kaidati, Bahar; Darmawaty,; Nisaa, Khairun

doi:10.1088/1755-1315/890/1/012061

Cited by 2 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While Rudd and Thorson (2017) stated that an increase in fishing mortality would be expected to decrease average length as more individuals were harvested. Therefore, only smaller individuals remained, which impacted the population size structure (Rumagia et al 2021). In addition, differences in fish size in the study area are thought to be due to changes in L. malabaricus migration patterns during winter from Australian waters to warmer waters (Timor Sea waters) (Sadhotomo and Suprapto 2013).…”

Section: Discussionmentioning

confidence: 99%

Age, growth, mortality, and population characteristics of the red snapper (Lutjanus malabaricus) in the Timor Sea waters, Indonesia

et al. 2023

View full text Add to dashboard Cite

Abstract. Herwaty S, Mallawa A, Najamuddin, Zainuddin M. 2023. Age, growth, mortality, and population characteristics of the red snapper (Lutjanus malabaricus) in the Timor Sea waters, Indonesia. Biodiversitas 24: 2217-2224. Red snapper (Lutjanus malabaricus Bloch & Schneider 1801) is a fishery resource with export commodities, high market demand is suspected of causing overfishing and a decrease in stocks, thus threatening its sustainability. This study aims to analyze the red snapper's age, growth, mortality, and population characteristics. Fish samples were collected at the Oeba Fish Landing Base Kupang from April to June 2020. The data analysis were as follows: the descriptively analyzed size structure, age group using the Bhattacharya method, growth parameter values (L? and K) based on the von Bertalanffy equation, and natural mortality using the Pauly and Y/R using the Beverton and Holt methods. The results of the red snapper observation are as follows: the smallest size at 12.8 cm (FL), the largest size at 72.8 cm (FL), the average length at 42.03 cm (FL) ± 16.03, the growth parameter value (L?)=99.40 cm (FL), (K)=0.51 year-1, t0=-0.23018 year-1, the population consisted of two and three age groups, the total mortality value (Z) 1.98 year-1, natural mortality (M) 0.84 year-1, fishing mortality (F) 1.14 year-1, and exploitation rate (E) 0.58 year-1. The actual Y/R value was 0.049, and the relative Y/R was 0.060 grams recruit-year-1. The fishing mortality is higher than the natural mortality value; a high exploitation value (E>0.5) indicates that over-exploitation and stock conditions are unhealthy. The results of this study can be used as a reference in managing red snapper resources in the future.

show abstract

Section: Discussionmentioning

confidence: 99%

Age, growth, mortality, and population characteristics of the red snapper (Lutjanus malabaricus) in the Timor Sea waters, Indonesia

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Rudd and Thorson (2018) report that an increase in fishing mortality is expected to decrease the average length because more individuals are caught. Therefore, all that remains are small individuals, which impacts the population's size structure (Rumagia et al, 2021).…”

Section: Morphometric Identificationmentioning

confidence: 99%

Morphological and morphometric identification of snapper (Family Lutjanidae) that landed in the Pulau Balai Fishing Port, Aceh Singkil

Erima,

Bahri,

Rizal

2024

Arwana: Scientific Journal of Aquatic Sciences

View full text Add to dashboard Cite

Pulak Banyak are one of the areas in Indonesia that have potential fishery resources. Accurate range determination and species identification are essential parts of fisheries resource management and must be done. This study aims to obtain information on the various types of snapper landed through morphological and morphometric approaches. The research was conducted in Fishing Port, Pulau Balai village, Pulau Banyak sub-district from September to October 2023. The method used in this research is descriptive analysis to describe fish morphology and measure several morphometric characteristics of fish. There were 12 characters measured using a ruler. The results of the study found ten species of 2 genera part of the family Lutjanidae with 36 individuals landed at the study site, namely Lutjanus synergies, Pristipomoides typus, Lutjanus vitta, Lutjanus madras, Lutjanus argentimaculatus, Lutjanus decussatus, Lutjanus erythropterus, Lutjanus gibbus, Lutjanus malabaricus, and Lutjanus papuensis. All fish species encountered have different morphological and morphometric characteristics, and the bambangan fish (Lutjanus erythropterus) is the fish with the largest morphometric size in the study site.

show abstract

Mortality and exploitation rate of some reef fish in Ternate Island Waters

Cited by 2 publications

References 15 publications

Age, growth, mortality, and population characteristics of the red snapper (Lutjanus malabaricus) in the Timor Sea waters, Indonesia

Age, growth, mortality, and population characteristics of the red snapper (Lutjanus malabaricus) in the Timor Sea waters, Indonesia

Morphological and morphometric identification of snapper (Family Lutjanidae) that landed in the Pulau Balai Fishing Port, Aceh Singkil

Contact Info

Product

Resources

About