Growth of European hake (Merluccius merluccius) in the Gulf of Lions based on conventional tagging

Abstract Mellon-Duval, C., de Pontual, H., Métral, L., and Quemener, L. 2010. Growth of European hake (Merluccius merluccius) in the Gulf of Lions based on conventional tagging. – ICES Journal of Marine Science, 67: 62–70. Growth of European hake was estimated from the results of a conventional tagging study in the Gulf of Lions, the first tagging experiment to have been undertaken on the species in Mediterranean waters. In all, 4277 hake 15–40 cm long were tagged and released on the inshore fishing grounds during spring 2006. The overall recapture rate was 6.5% and times-at-liberty ranged from 1 to 717 d. Growth rate in hake varied with size and sex. The estimated growth parameter (von Bertalanffy k) was estimated as double previously published values based on size frequency distribution in the area. Compared with recent growth parameters derived from the tagging experiments in the Bay of Biscay, k was estimated to be slightly lower in the Gulf of Lions. With this faster growth, hake would mature earlier than previously thought: at age 2 for both sexes, instead of at age 3 or 4 as currently accepted for the Mediterranean. Growth rate by sex decreased to a similar level once fish had attained sexual maturity.

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Age estimation, growth and maturity of the European hake (Merluccius merluccius (Linnaeus, 1758)) from Iberian Atlantic waters

ICES Journal of Marine Science ◽

10.1016/s1054-3139(03)00086-9 ◽

2003 ◽

Vol 60 (5) ◽

pp. 1086-1102 ◽

Cited By ~ 58

Author(s):

C Piñeiro ◽

M Saínza

Keyword(s):

Life History ◽

Age Estimation ◽

Growth Parameters ◽

Grey Literature ◽

Von Bertalanffy ◽

Merluccius Merluccius ◽

Consistent Manner ◽

The Mean ◽

First Maturity ◽

European Hake

Abstract Difficulties in age estimation for hake (Merluccius merluccius) have hampered the assessment of stocks. Here, we describe new, agreed ageing criteria based on the interpretation of the pattern of otolith growth. Improved estimates of von Bertalanffy growth parameters, and new estimates of maturity ogive parameters and length–weight relationships for European hake from Iberian Atlantic waters are presented. The results came from a study carried out during 1996–1997 and provide the first published account of the main life history traits of Southern stock hake. von Bertalanffy growth parameters of males were L∞ = 70cm, K = 0.18 year−1, and t0=−0.97 year, and those of females were L∞ = 89cm, K = 0.13 year−1, and t0 = −1.15 year. Growth of sexes differed from age 3 onwards, with females being on average larger and heavier than males. The estimated total length (L, cm)–total weight (W, g) relationships were W=0.0132135L2.8134246 for males and W=0.0086471L2.942563 for females. Spawning took place from December to May with a peak in February. The mean length and age at first maturity were 32.8 cm at 2.5 years for males and 45 cm at 4.4 years for females. Application of new ageing criteria showed that otolith sections may be used to determine ages up to 5 years in a consistent manner. These results indicate that hake of the Southern stock grow at higher rates and mature earlier than previously considered. Summaries of hake's life history parameters from other marine regions are also presented in order to make information that belongs largely to the grey literature available.

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Growth characteristics of the European hake, Merluccius merluccius (Linnaeus, 1758), inhabiting northeastern Mediterranean

Acta Adriatica ◽

10.32582/aa.61.1.6 ◽

2020 ◽

Vol 61 (1) ◽

pp. 79-88

Author(s):

Hulya Girgin ◽

Nuri Başusta

Keyword(s):

Growth Performance ◽

Condition Factor ◽

Growth Parameters ◽

Age Determination ◽

Growth Characteristics ◽

Von Bertalanffy ◽

Merluccius Merluccius ◽

Fishing Season ◽

Male Ratio ◽

European Hake

In this study, the age and some growth characteristics of the European hake, Merluccius merluccius, from the northeastern Mediterranean were examined during 2015-2016 fishing season. A total of 661 European hake ranging from 9.8 to 51.6 cm in total length was captured by commercial trawler. Female/male ratio was 1/1.15. Age determination was conducted using the sagittal otoliths. Ages of examined individuals ranged from 1 to 7 years. The von Bertalanffy growth parameters fitted to the average measured total lengths-at-age for each sex separately and estimated as L∞= 93.98 cm, k= 0.114 year-1, t0= -0.597 year for females, as L∞= 77.65 cm , k= 0.153 year-1, t0= -0.343 year for males and as L∞= 84.44 cm, k= 0.135 year-1, t0= -0.469 year for combined sexes. The growth performance value (Φ) of the European hake population was computed as 2.98 for combined sexes. Mean condition factor value for population was 0.654±0.021; the highest condition factor was found as 1.01 in fish at age 7.

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Adptatives Responses of the Species Ethmalosa fimbriata in Biétri Bay, a Highly Disturbed Environment

Journal of Biology and Life Science ◽

10.5296/jbls.v12i1.17420 ◽

2021 ◽

Vol 12 (1) ◽

pp. 48

Author(s):

Moussa Side ◽

Eby Yoboué Gnamma Honorine Alla ◽

Behiri Innocent Kakou ◽

Béatrice Abouo Adepo-Gourene

Keyword(s):

Growth Rate ◽

Sexual Maturity ◽

Reference Site ◽

Growth Parameters ◽

The Other ◽

Other Hand ◽

Males And Females ◽

Disturbed Environment

The growth and size at first sexual maturity of the species Ethmalosa fimbriata were studied in two sites in the Ebrié lagoon: Bietri, a highly anthropized environment and Vitré 2, a reference site. Growth parameters estimated from size frequencies showed that growth in both size and weight was faster in females than in males regardless of habitat. On the other hand, specimens from Biétri bay have a slower growth rate than those from Vitré 2. In Bietri bay, individuals are characterized by early sexual maturity. They reach sexual maturity at the age of 0.55 years (about 7 months), corresponding to a size of 6.13 cm for males and 8.42 cm for females; whereas in Vitré 2, they reach sexual maturity at the age of 0.82 years (about 10 months) corresponding to a size of 10.22 cm and 12.94 cm for males and females respectively. These results show that in a highly antropic environment, the growth of Ethmalosa fimbriata is affected and individuals reproduce earlier.

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Pertumbuhan dan Struktur Umur Kerang Kepah (Meretrix meretrix) di Kampung Nipah Desa Sei Nagalawan Kecamatan Perbaungan Kabupaten Serdang Bedagai

Journal of Marine and Aquatic Sciences ◽

10.24843/jmas.2018.v4.i02.316-323 ◽

2017 ◽

Vol 4 (2) ◽

pp. 316

Author(s):

Nafi Sakila ◽

Dinda Ayu Ramadhani ◽

Ani Suryanti

Keyword(s):

Natural Resources ◽

Random Sampling ◽

Growth Parameters ◽

Growth Parameter ◽

Sampling Technique ◽

Simple Random Sampling ◽

Sampling Time ◽

Size Group ◽

Age Group ◽

Von Bertalanffy

Sei Nipah has enormous potential for natural resources. Natural resources that serve as the main livelihood in fulfilling daily needs in Kampung Nipah is shellfish. Shellfish (M. meretrix) is one of the shells that many interested by the surrounding community. The purpose of this research is to know growth parameter and age group of shellfish (M. meretrix) in Kampung Nipah. The sampling technique was done randomly (simple random sampling). Sampling time is done at low tide. Sampling was conducted in March - May 2017. The results showed differences in the length of different shells each month. The size group of shellfish (M. meretrix) found only one size group during the three months of the study. Analysis of shellfish growth parameters based on data of long frequency distribution showed length of infiniti (L?) 33,10 mm and growth growth (K) that was 1,21 per month. Von Bertalanffy Growth Parameters Lt = 33.1 (1-e [-1.21 (t + 0.12)]) Long infiniti size is seen the growth of shellfish shells can no longer be worked Shells reach maximum length at the age of 13 months with a shell length of 33.10 mm.The youthful shells have rapid growth and as age increases, when it reaches old age the rate of growth will slow even.

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Influence of sex, maturity and reproduction on PCB and p,p′DDE concentrations and repartitions in the European hake (Merluccius merluccius, L.) from the Gulf of Lions (N.W. Mediterranean)

The Science of The Total Environment ◽

10.1016/j.scitotenv.2009.10.004 ◽

2009 ◽

Vol 408 (2) ◽

pp. 304-311 ◽

Cited By ~ 48

Author(s):

Xavier Bodiguel ◽

Véronique Loizeau ◽

Anne-Marie Le Guellec ◽

François Roupsard ◽

Xavier Philippon ◽

...

Keyword(s):

Merluccius Merluccius ◽

Gulf Of Lions ◽

European Hake

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Patterns of temporal variation in growth rate from a mainland population of Anolis nebulosus (Squamata: Dactyloidae), in the Mexican Pacific Coast

10.7287/peerj.preprints.3092v1 ◽

2017 ◽

Author(s):

Aurelio Ramírez Bautista ◽

Uriel Hernández-Salinas ◽

Raciel Cruz Elizalde

Keyword(s):

Growth Rate ◽

Food Availability ◽

Sexual Maturity ◽

Pacific Coast ◽

Growth Patterns ◽

Dry Forest ◽

Minimum Size ◽

Von Bertalanffy ◽

Mexican Pacific ◽

Size At Sexual Maturity

In this study we used three nonlinear regression models: Von Bertalanffy, logistic-by-length, and logistic-by-weight to describe the pattern of growth of hatchling, juvenile, and adult of the lizard Anolis nebulosus in a tropical dry forest near of the Mexican Pacific coast during a period of 1989 and 1990. Von Bertalanffy and logistic-by-length models showed the best fit to the growth data for males and females of three age classes from marked and recaptured lizards in these years. The characteristic parameter of growth (r) and asymptotic growth (A1) extracted from these models indicated that males grow faster than females, but the latter reach a slightly larger size than males. The growth curves revealed that males reach minimum size at sexual maturity at 35 mm in snout-vent length (SVL), at an age of seven months, while females reach sexual maturity at 37 mm of SVL at nine months. Comparisons of growth rate between wet and dry seasons and years revealed that hatchlings and juveniles of both sexes had higher growth during the wet season for both years. Although there was no significant variation between measured environmental variables or in the food availability, the weight of evidence suggests that environmental variation has an influence on the growth of A. nebulosus of this population. Results indicate that variation on growth patterns observed may result from a combination of environmental factors, such as food availability, predation pressure and some reproductive characteristics as size at sexual maturity and size of hatchlings at birth.

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In situ Growth Rate Assessment of the Hexactinellid Sponge Asconema setubalense Using 3D Photogrammetric Reconstruction

Frontiers in Marine Science ◽

10.3389/fmars.2021.612613 ◽

2021 ◽

Vol 8 ◽

Cited By ~ 1

Author(s):

Elena Prado ◽

Javier Cristobo ◽

Augusto Rodríguez-Basalo ◽

Pilar Ríos ◽

Cristina Rodríguez-Cabello ◽

...

Keyword(s):

Growth Rate ◽

Marine Protected Area ◽

Growth Parameters ◽

Benthic Communities ◽

Monitoring Program ◽

Maximum Size ◽

Point Clouds ◽

Von Bertalanffy ◽

3D Point Clouds ◽

Novel Approach

We describe the first application of a non-invasive and novel approach to estimate the growth rate of Asconema setubalense (Porifera, Hexactinellida) through the use of 3D photogrammetric methodology. Structure-from-Motion techniques (SfM) were applied to videos acquired with the Politolana ROTV in the El Cachucho Marine Protected Area (MPA) (Cantabrian Sea) on three different dates (2014, 2017, and 2019) over six years. With these data, a multi-temporal study was conducted within the framework of MPA monitoring. A complete 3D reconstruction of the deep-sea floor was achieved with Pix4D Mapper Pro software for each date. Having 3D point clouds of the study area enabled a series of measurements that were impossible to obtain in 2D images. In 3D space, the sizes (height, diameter, cup-perimeter, and cup-surface area) of several A. setubalense specimens were measured each year. The annual growth rates recorded ranged from zero (“no growth”) for a large size specimen, to an average of 2.2 cm year–1 in cup-diameter, and 2.5 cm year–1 in height for developing specimens. Von Bertalanffy growth parameters were estimated. Taking into account the size indicators used in this study and based on the von Bertalanffy growth model, this sponge reaches 95% maximum size at 98 years of age. During the MPA monitoring program, a high number of specimens disappeared. This raised suspicions of a phenomenon affecting the survival of this species in the area. This type of image-based methodology does not cause damage or alterations to benthic communities and should be employed in vulnerable ecosystem studies and MPA monitoring.

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Growth Parameters and Spawning Season Estimation of Four Important Flyingfishes in the Kuroshio Current Off Taiwan and Implications From Comparisons With Global Studies

Frontiers in Marine Science ◽

10.3389/fmars.2021.747382 ◽

2022 ◽

Vol 8 ◽

Author(s):

Shui-Kai Chang ◽

Tzu-Lun Yuan ◽

Simon D. Hoyle ◽

Jessica H. Farley ◽

Jen-Chieh Shiao

Keyword(s):

Growth Parameters ◽

Growth Models ◽

Growth Parameter ◽

Optimal Growth ◽

Kuroshio Current ◽

Parameter Estimates ◽

Special Importance ◽

Von Bertalanffy ◽

Multiple Model ◽

The Kuroshio

Growth shapes the life history of fishes. Establishing appropriate aging procedures and selecting representative growth models are important steps in developing stock assessments. Flyingfishes (Exocoetidae) have ecological, economic, and cultural importance to many coastal countries including Taiwan. There are 29 species of flyingfishes found in the Kuroshio Current off Taiwan and adjacent waters, comprising 56% of the flyingfishes taxa recorded worldwide. Among the six dominant species in Taiwan, four are of special importance. This study reviews aging data of these four species, documents major points of the aging methods to address three aging issues identified in the literature, and applies multi-model inference to estimate sex-combined and sex-specific growth parameters for each species. The candidate growth models examined included von Bertalanffy, Gompertz, Logistic, and Richards models, and the resulting optimal model tended to be the von Bertalanffy model for sex-combined data and Gompertz and von Bertalanffy models for sex-specific cases. The study also estimates hatch dates from size data collected from 2008 to 2017; the results suggest that the four flyingfishes have two spawning seasons per year. Length-weight relationships are also estimated for each species. Finally, the study combines the optimal growth estimates from this study with estimates for all flyingfishes published globally, and statistically classifies the estimates into clusters by hierarchical clustering analysis of logged growth parameters. The results demonstrate that aging materials substantially affect growth parameter estimates. This is the first study to estimate growth parameters of flyingfishes with multiple model consideration. This study provides advice for aging flyingfishes based on the three aging issues and the classification analysis, including a recommendation of using the asterisci for aging flyingfishes to avoid complex otolith processing procedures, which could help researchers from coastal countries to obtain accurate growth parameters for many flyingfishes.

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