Growth, mortality and stock status of mullets (<i>Mugilidae</i>) in Chilika Lake, India

Panda, Debabrata; Mohanty, S. K.; Pattnaik, Ajit K.; Das, Subrata; Karna, S. K.

doi:10.1111/lre.12205

Cited by 30 publications

(31 citation statements)

References 24 publications

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“…The Sundarbans ecosystem is the nursery ground and the maximum length of Acanthopagrus latus and Lates calcarifer were found to be 32 and 49 cm respectively, which indicates higher growth coefficient and lower asymptotic length. Growth rates of K (growth co-efficient), L (asymptotic length) and the maximum age (t max ) of the Chelon parsia found 0.98yr -1 , 32.1 cm and 3+ years respectively in Chilika Lake, Odisha state, India [35]. Growth rates of K (growth co-efficient), L (asymptotic length) and the maximum age (t max ) of the Otolithoides pama were found 0.98 yr -1 , 40.9 cm and 3.06 years respectively in Thanlwin River mouth, Mon State, Myanmar [36].…”

Section: Discussionmentioning

confidence: 96%

Population Dynamics of Five Important Commercial Fish Species in the Sundarbans Ecosystem of Bangladesh

Mustafa¹,

Ahmed²,

Ilyas³

2019

JALSI

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Aims: To determine the population dynamics and assess the exploitation level of Mystus gulio, Acanthopagrus latus, Chelon parsia, Otolithoides pama and Lates calcarifer in the Sundarbans ecosystem of Bangladesh. Study Design: Monthly length-frequency data of five fish species were collected from the Sundarbans ecosystem. The lengths of five fish species were recorded to the nearest one cm intervals in each month. Place and Duration of Study: The study was conducted from January to December 2011 in the Sundarbans ecosystem in Bangladesh. Methodology: The FAO-ICLARM Fish Stock Assessment Tools (FiSAT II) software was used to estimate the von Bertalanffy growth parameters (L∝ and K), mortality coefficients (Z, M and F), probability of capture, recruitment pattern and Yield/Biomass-per-recruit for five commercially important fish species caught by fishers in the Sundarbans ecosystem of Bangladesh. Results: In the Sundarbans ecosystem of Bangladesh area the values of asymptotic length (L∝) for Mystus gulio, Acanthopagrus latus, Chelon parsia, Otolithoides pama and Lates calcarifer were found to be 23.0 cm, 33.6 cm, 30.0 cm, 32.5 cm and 55.0 cm respectively while the growth co-efficient (K) were 0.75, 0.85, 1.1, 0.8 and 0.5 respectively. The estimates for L∝ (23.00 – 55.0 cm) and K (0.5-1.1 year-1) obtained were consistent with those available in the literature. Relatively high K and low L∝ values, typical of short-lived tropical fishes, were obtained for Mystus gulio, Acanthopagrus latus, Chelon parsia and Otolithoides pama. The length growth performance index (ϕ’) of the Pauly and Munro’s function was in the range of 2.599 – 3.180. Natural mortality, fishing mortality and total mortality were in the range of 0.956-1.89, 0.55-1.58 and 1.52-3.3 respectively. Estimates for total mortality (Z) and natural mortality (M) imply low annual rates of survival and high turnover rates. The recruitment pattern suggested one main pulse of annual recruitment. The exploitation rate was estimated to be between 27% and 47% and the length at first capture was estimated to be approximately 19-54% of L∝. The exploitation rate obtained for five fish species are relatively lower compared to other available studies in the coastal areas of Bangladesh. The growth and exploitation rates obtained were compared with available estimates to evaluate the consistency of the results with current knowledge about the species in the region. Conclusion: The study indicated that the length-at-first-capture/L∝ seem to be a simple parameter, which could be used to make a rapid assessment of the status of the stocks. All together, the present study reveals that the population of these five studied species attains acceptable sustainability levels in the Sundarbans ecosystem and scope for a slight increase in catch efforts.

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Section: Discussionmentioning

confidence: 96%

Population Dynamics of Five Important Commercial Fish Species in the Sundarbans Ecosystem of Bangladesh

Mustafa¹,

Ahmed²,

Ilyas³

2019

JALSI

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“…Grey mullets (Mugilidae) are the most important commercial fish species in the Köyceğiz Lagoon. There are five grey mullet species in the Köyceğiz Lagoon, namely: golden grey mullet, Chelon auratus (Risso, 1810), leaping mullet, Chelon saliens (Risso, 1810), thicklip grey mullet, water bodies (Arruda et al 1991, Hotos et al 2000, Hoşsucu 2001a, Fazli et al 2008a, Kraljević et al 2011, Saoudi and Aoun 2014, Tulkani 2017, Panda et al 2018.…”

Section: Introductionmentioning

confidence: 99%

Age, growth, mortality, reproduction, and exploitation rates for fishery management of grey mullet species in the Köyceğiz Lagoon–Estuary (Mediterranean coast)

Reis¹,

Ateş²

2020

Acta Ichthyol. Piscat.

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Background. The Mugilidae is a widely distributed family in the tropical, subtropical, and temperate waters. These fish species have a global economic value because of the high quality of their flesh and caviar. This study provides new data on the age, growth, and reproduction parameters of commercially exploited grey mullets from the Köyceğiz Lagoon, Turkey, namely golden grey mullet, Chelon auratus (Risso, 1810), leaping mullet, Chelon saliens (Risso, 1810), thicklip grey mullet, Chelon labrosus (Risso, 1827), and flathead grey mullet, and Mugil cephalus Linnaeus, 1758. The obtained results are intended for fisheries management of golden mullets in the area. Materials and methods. A total of 1195 fish specimens were collected from the Köyceğiz Lagoon (south-western Anatolia). The mullets were caught monthly, between January 2017 and December 2017, using fish barrier, trammel net, beach seine, and cast-net. The fish age was determined from sagittal otoliths. Growth parameters were determined by applying the von Bertalanffy growth function. Reproduction period, mortality and exploitation, relative yield per recruit (Y′/R), and biomass per recruit (B′/R) were determined. Results. The most frequent mullet age groups were 3 + and 4 + (for M. cephalus and C. labrosus) and 4 + (for C. auratus and C. saliens). The following von Bertalanffy's growth models were calculated: L t = 58.78(1-e-0.163(t + 0.0195)) for C. auratus, L t = 59.99(11-e-0.169(t + 0.0132)) for M. cephalus, L t = 49.77(111-e-0.193(t + 0.0293)) for C. labrosus, and L t = 46.41(111-e-0.232(t + 0.0283)) for C. saliens. The growth performance index (Ø′) for C. auratus,

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“…The values of Ǿ for O. ruber varied from 2.61 [12] to 3.24 [11], and the estimate obtained in our study (3.23) compares with the higher end of this range. The variations in the growth parameters of the same species in different geographic locations may depend on several factors, such as the environmental conditions, sampling methodology, availability of food, reproductive activity, the genetic constitution of the individual and fishing pressure [38,[44][45][46].…”

Section: Discussionmentioning

confidence: 99%

Aspects of Population Dynamics of Tiger Tooth Croaker, Otolithes ruber (Bloch and Schneider, 1801) from Northwest Arabian Gulf, Iraq

Mohamed

Al-Hassani

2021

AJFAR

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The present study consists of the growth, mortality, relative yield recruit and virtual population analysis of tigertooth croaker, Otolithes ruber from Iraqi marine waters, northwest Arabian Gulf between February 2020 and January 2021. Analysis of population dynamics employed methods fitted in FiSAT II software using pooled length-frequencies. A total of 3835 individuals of O. ruber ranged from 17.0 to 60.0 cm have been collected. The exponent (b) of the length-weight relationship was found to be 2.755. The von Bertalanffy growth parameters (L∞ and K) were estimated as 68.5 cm and 0.36, respectively, while the growth performance index (Ø') was 3.228. The total mortality (Z) was calculated as 1.10, while the natural and fishing mortality rates were 0.69 and 0.41, respectively, and the current exploitation rate (Ecurrent) was 0.38. Fish were recruited to the fishery at a mean size of L50= 20.55 cm. The recruitment pattern of O. ruber was continuous throughout the year with two major peaks. The analysis of yield-per-recruit (Y/R’) indicates that the current exploitation rate was below the biological target reference points (E0.1 = 0.40 and Emax= 0.53), refer to the stock of O. ruber is underexploited. The 27 cm length group was more vulnerable to fishing and more harvested according to virtual population analysis. sLength at first capture was higher than the length at first maturity of the species in the region. For management purposes, more yields could be obtained by increasing the mesh sizes of the nets employed in the fishing of the species.

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Growth, mortality and stock status of mullets (Mugilidae) in Chilika Lake, India

Cited by 30 publications

References 24 publications

Population Dynamics of Five Important Commercial Fish Species in the Sundarbans Ecosystem of Bangladesh

Population Dynamics of Five Important Commercial Fish Species in the Sundarbans Ecosystem of Bangladesh

Age, growth, mortality, reproduction, and exploitation rates for fishery management of grey mullet species in the Köyceğiz Lagoon–Estuary (Mediterranean coast)

Aspects of Population Dynamics of Tiger Tooth Croaker, Otolithes ruber (Bloch and Schneider, 1801) from Northwest Arabian Gulf, Iraq

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