Comparison of Growth Parametres Between Sardine Sardina Pilchardus (Walbaum, 1792) and Anchovy Engraulis Encrasicolus (Linnaeus, 1758) from the Eastern Adriatic Sea

Sardine Sardina pilchardus (Walbaum, 1792) and anchovy Engraulis encrasicolus (Linnaeus, 1758), besides being ecologically very important pelagic resources, are also the most numerous fish species in Croatian fisheries landings. Hence, the aim of this study was to compare sardine and anchovy growth parameters: length, length-weight relationship, condition and age population structure. All samples (N=3313) were collected from purse seine catches of eastern Adriatic Sea, during period June 2015 – August 2016. Total lengths of sardine and anchovy ranged from 10.5 to 17.5 cm (average ± SD: 13.94 cm ± 1.07) and from 10.0 to 17.5 cm (average ± SD: 14.09 cm ± 0.88), respectively. Both sardine and anchovy length-weight relationship indicated positive allometry, although allometric coefficient was higher in anchovy (b=3.201) than in sardine (b=3.069). In general, condition of both species grew with fish length. Sardine and anchovy age composition varied from one to five years, while most of the analysed samples belonged to the 3 year class. Growth parameters were for anchovy: L∞=18.36cm; K=0.317; t0= -1.89 and for sardine L∞=19.71 cm; K=0.286; t0= -1.82.

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Marine litter in stomach content of small pelagic fishes from the Adriatic Sea: sardines (Sardina pilchardus) and anchovies (Engraulis encrasicolus)

Environmental Science and Pollution Research ◽

10.1007/s11356-018-3762-8 ◽

2018 ◽

Vol 26 (3) ◽

pp. 2771-2781 ◽

Cited By ~ 25

Author(s):

Monia Renzi ◽

Antonietta Specchiulli ◽

Andrea Blašković ◽

Cristina Manzo ◽

Giorgio Mancinelli ◽

...

Keyword(s):

Stomach Content ◽

Adriatic Sea ◽

Sardina Pilchardus ◽

Marine Litter ◽

Engraulis Encrasicolus ◽

Pelagic Fishes

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Age, growth and mortality of the garfish, Belone belone (L. 1761) in the Adriatic Sea

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s002531541200149x ◽

2012 ◽

Vol 93 (2) ◽

pp. 365-372 ◽

Cited By ~ 3

Author(s):

Barbara Zorica ◽

Vanja Čikeš Keč

Keyword(s):

Adriatic Sea ◽

Growth Parameters ◽

Fork Length ◽

Mortality Rates ◽

Von Bertalanffy ◽

Positive Allometry ◽

Von Bertalanffy Model ◽

Total Length ◽

Belone Belone ◽

Conservation And Management

A sample of 3393 garfish, Belone belone (Linnaeus, 1761) was captured using a seine net between January 2003 and December 2008, along the eastern Adriatic Sea. The range in total length was 20.8–75.4 cm and in weight was 12.21–639.25 g. Length–length equations for converting size measurements (standard length and fork length to total length (TL)) were linear. In the length–weight relationship, positive allometry was established (b = 3.4818). Age, determined from sagittal otoliths, ranged from 1+ to 8+ years. The estimated von Bertalanffy model growth parameters for garfish were L∞ = 90.3 cm, K = 0.158 year−1, t0 = −0.109. Otolith weight was endorsed as a possible age predictor, as it showed highly exponential correlation with total garfish length and age (Wo = 0.0012 TL2.189; Wo = 0.568t1.486). These findings were used to examine mortality rates and exploitation in order to improve conservation and management of this pelagic species.

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Population structure, size at maturity and condition of sardine, Sardina pilchardus (Walb., 1792), in the nursery ground of the eastern Adriatic Sea (Krka River Estuary, Croatia)

Estuarine Coastal and Shelf Science ◽

10.1016/j.ecss.2007.07.037 ◽

2008 ◽

Vol 76 (4) ◽

pp. 739-744 ◽

Cited By ~ 21

Author(s):

Gorenka Sinovčić ◽

Vanja Čikeš Keč ◽

Barbara Zorica

Keyword(s):

Population Structure ◽

Adriatic Sea ◽

River Estuary ◽

Nursery Ground ◽

Size At Maturity ◽

Sardina Pilchardus

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ANALISIS HUBUNGAN PANJANG BOBOT DAN PENDUGAAN PARAMETER PERTUMBUHAN IKAN NILA (Oreochromis niloticus) DI WADUK IR. H. DJUANDA

BAWAL Widya Riset Perikanan Tangkap ◽

10.15578/bawal.3.2.2010.85-92 ◽

2017 ◽

Vol 3 (2) ◽

pp. 85

Author(s):

Masayu Rahmia Anwar RahmiaAnwar Putri ◽

Didik WahjuHendro Tjahjo

Keyword(s):

Oreochromis Niloticus ◽

Nile Tilapia ◽

Condition Factor ◽

Growth Parameters ◽

Parameters Estimation ◽

Fish Length ◽

Weight Relationship ◽

Nile Tilapia Oreochromis Niloticus ◽

Weight Data

Ikan nila (Oreochromis niloticus) merupakan salah satu ikan introduksi yang mulai mendominansi hasil tangkapan ikan di Waduk Ir. H. Djuanda. Penelitian ini bertujuan untuk mengetahui hubungan panjang bobot dan menduga parameter pertumbuhan dari ikan nila di Waduk Ir. H. Djuanda. Contoh ikan didapatkan selama bulan Pebruari sampai Nopember 2008. Data panjang dan bobot ikan dianalisis hubungan panjang bobotnya dan ditentukan parameter pertumbuhannya dengan menggunakan program FISAT II. Hasil penelitian menunjukan bahwa pertumbuhan ikan nila di Waduk Ir. H. Djuanda bersifat allometrik negatif dengan persamaan W=0,129L2,4608,yang menandakan pertambahan bobotnya tidak secepat pertambahan panjangnya (b<3) dengan faktor kondisi 1,15.Ukuran panjang ikan yang tertangkap berkisar antara 11-41 cm. Hasil pendugaan parameter pertumbuhan diperoleh L=44,10 cm, K=0,72 (per tahun), dengan Z=2,4, M=1,34, F=1,06, dan E=0,44. Nile tilapia (Oreochromis niloticus) is one of introduction fishes that begin to dominate yield of fish capture at Ir. H. Djuanda Reservoir. The aim of this research was to know the length weight relationship and growth parameters estimation of nile tilapia at Ir. H. Djuanda Reservoir. The samples were collected during February until November 2008. The length and weight data of nile tilapia were analyzed its length weight relationship and the growth parameters were evaluated by FISAT II. The research shows that the characteristic of nile tilapia growth’s at Ir. H. Djuanda Reservoir was allometric negative with similarity W=0.129L2.4608, that indicated the increasing of weight from this fish not fast as its length (b<3) with the condition factor of it was 1.15. The range measure of fish length that captured was 11-41 cm. The results from growth parameters estimation were L=44.10 cm, K=0.72 (per year), with Z=2.4, M=1.34, F=1.06, and E=0,44.

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Temporal and spatial genetic variation of Engraulis encrasicolus in the Adriatic Sea

Mediterranean Marine Science ◽

10.12681/mms.25990 ◽

2021 ◽

Author(s):

SARA MALAVOLTI ◽

PAOLO RUGGERI ◽

TATIANA FIORAVANTI ◽

JEKOSLAV TIČINA ◽

ILARIA COSTANTINI ◽

...

Keyword(s):

Population Structure ◽

Genetic Variation ◽

Adriatic Sea ◽

Environmental Changes ◽

Marine Ecosystem ◽

European Anchovy ◽

Engraulis Encrasicolus ◽

The North ◽

Temporal And Spatial ◽

Spatial Genetic Variation

Small pelagic fish play a key role in the marine ecosystem, controlling predator abundance and regulating primary production rates by foraging on plankton. Alterations induced at different ecological levels by fishing activities and/or environmental changes are affecting the reproductive success of several small pelagics, including European anchovy (Engraulis encrasicolus), which is a major target of Adriatic mid-water trawl and purse-seine fisheries. In this study, we evaluated short-term genetic changes of the species in the Adriatic Sea by applying molecular markers in three generations samples of European anchovy. Thirteen polymorphic microsatellite markers and a mitochondrial gene were used in cohorts of adults and larvae, collected at three sites in the north-east, central and southern Adriatic Sea in 2015. Furthermore, temporal and spatial genetic variation was assessed by comparing the dataset above with a sample of adult anchovy collected in 2012 at three sites close to those sampled in 2015. Expected heterozygosity was higher in adults than in larvae, suggesting a loss of genetic diversity and uneven reproduction. In addition, comparison of the two datasets demonstrated a change in the anchovy population structure from 2012 to 2015. In the reproductive event of 2015, this change led the two main genetic stocks described in the Adriatic Sea to merge into one. We suggest that the population structure of European anchovy in the north-eastern Adriatic may be influenced by changes in environmental parameters and by periodic alterations in the temporal pattern of population connectivity.

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Spatiotemporal variations in length-weight relationship, growth pattern and condition factor of Periophthalmus variabilis Eggert, 1935 in Vietnamese Mekong Delta

PeerJ ◽

10.7717/peerj.12798 ◽

2022 ◽

Vol 10 ◽

pp. e12798

Author(s):

Quang Minh Dinh ◽

Ton Huu Duc Nguyen ◽

Tien Thi Kieu Nguyen ◽

Giang Van Tran ◽

Ngon Trong Truong

Keyword(s):

Growth Pattern ◽

Condition Factor ◽

Mekong Delta ◽

Fish Growth ◽

Maturation Stage ◽

Fish Length ◽

Mangrove Forests ◽

Wet Season ◽

Positive Allometry ◽

Weight Relationship

Length-weight relationship (LWR), growth pattern and condition factor (CF) play a vital role in fish resource evaluation and management but data on this is limited for Periophthalmus variabilis. This is an amphibious fish that lives in the mudflats of the mangrove forests in the Western Pacific regions, including the Vietnamese Mekong Delta (VMD). This paper contributes to the understanding of the LWR, growth pattern and CF of P. variabilis. Fish specimens were collected by hand at four sites in the VMD from April 2020 to March 2021. The analysis of 495 individual fish (259 females and 236 males) showed that fish weight could be estimated from a given fish length due to high determination values (r2 = 0.70 − 0.97). Dusky-gilled mudskippers of the VMD exhibited positive allometry, as indicated by their larger than 3 b value (b = 3.094 ± 0.045, p = 0.04). However, the growth pattern of the mudskipper between the sex and maturation stage (immature versus mature) showed isometry. These fish displayed positive allometry in the dry season (b = 3.138 ± 0.065) (>3, p = 0.04) but isometry in the wet season (b = 3.058 ± 0.061) (≈3, p = 0.34). Fish growth ranged from isometry to positive allometry and varied by site (b = 2.850 ± 0.103–3.370 ± 0.114) and month (b = 2.668 ± 0.184–3.588 ± 0.299) based on the b value. The CF of P. variabilis was not affected by sex (p = 0.29), body size (p = 0.64) or season (p = 0.43), but was affected by site (p = 0.01) and month (p = 0.01). The CF of this species (1.05 ± 0.02) was higher than 1 (p < 0.001), indicating that the fish adapted well to their habitat.

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Assessment of PCBs and OCPs in anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) from theAdriatic Sea, Bay of Herceg Novi (alongside Kumbor Marine Channel)

Acta Adriatica ◽

10.32582/aa.61.1.2 ◽

2020 ◽

Vol 61 (1) ◽

pp. 27-38

Author(s):

Marijana Krivokapić

Keyword(s):

Polychlorinated Biphenyls ◽

Organochlorine Pesticides ◽

Lipid Content ◽

Adriatic Sea ◽

Food Chains ◽

Sardina Pilchardus ◽

Engraulis Encrasicolus ◽

The World ◽

Industrial Level ◽

First Time

This manuscript presents research on six (6) Polyclorinated biphenyls (PCBs): PCB 28, PCB 52, PCB 101, PCB 138, PCB 153, PCB 180 and twenty-three (23) Organochlorine Pesticides (OCPs) in anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus), from the Adriatic Sea, Bay of Herceg Novi (alongside Kumbor marine channel). Polychlorinated biphenyls (PCBs) have been syn-thesized for the first time in 1866 and their production at the industrial level began in 1929. Intensive manufactured have been since 1939 and their exports as chemicals and products have taken place literally in every country in the world. However, the distribution of PCBs in the environment and thus in the food chains were unknown until 1966 when it were identified in human and wildlife. Despite production discontinuation in a number of countries since the mid-1970s and early 1980s, PCBs are still pollutants of major international concern. All analyzed samples contained different concentrations of PCBs and among these congeners #153, #138, #180 and #101 were the most present regarding intensification. Concentration of the analyzed PCBs in anchovies’ samples (lipid content) decreased in the subsequent order: PCB153> PCB 138> PCB180> PCB101> PCB52. The grade of PCBs concentration in homogenized ancho-vies samples decreased in the same way: PCB 153> PCB 138> PCB >180 > PCB 101> PCB 52, as well as in sardine homogenized samples and in sardine lipid content, they appear in relation to quantity in the same order. Concentration of PCB 28 shows the same value in the all analyzed samples (<10).

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