Fishery Resources and Status of Small Pelagic Fish in Eastern Central Atlantic

ABSTRACT Effort to exploitation the fishery resources can do in various ways, catching effort by use of hand line is one of the efforts in the field of fisherie. The study was conducted in the Sabutung Island Waters of Pangkep Regency, aims was to investigate the effect of different of hook size and the species composition of the catch of hand line using different of hook size. The effectiveness of hook size is determined by the highest of catches.The method used is experimental fishing on the fishing operation of hand line during 30 trips. Data analysis used normality test and ANOVA test done with SPSS 16.0. The results showed that the differences between hook size number 10 with number 8 and 12 gave influences to the amount of catch. It’s showed by sig score hook size no.10 is 0,00 and sig score hook size no.8 and 12 is 0,00 which them have sig score less than 0,05 and it meant H0 pushed away so it concluded that the hook size influenced the fishing catch. The compositions of fish catch during the study based on the amount and weight were short mackerel, Bigeye scad, Indian scad, yellow tail and diodon histrix. Short mackerel were the most species of fish caught during the research that is equal to 41,2% of the 364 tail of the total catch. Keywords: hand line, hook size, small pelagic fish ------- ABSTRAK Usaha mengeksploitasi sumber daya perikanan dapat dilakukan dengan berbagai macam cara, salah satu diantaranya adalah usaha perikanan tangkap dengan menggunakan pancing ulur (hand line). Penelitian dilakukan pada September-Nopember 2012 di Perairan Pulau Sabutung Kabupaten Pangkep, bertujuan untuk mengetahui pengaruh perbedaan ukuran mata pancing dan komposisi hasil tangkapan dari tiga ukuran mata pancing yang berbeda sehingga diperoleh ukuran mata pancing yang efektif. Efektifitas ukuran mata pancing ditentukan berdasarkan jumlah tangkapan terbanyak. Metode yang digunakan adalah metode experimental fishing, dengan operasi penangkapan ikan sebanyak 30 trip. Analisis data menggunakan uji kenormalan dan uji ANOVA dengan SPSS 16.0. Hasil penelitian menunjukkan bahwa perbedaan mata pancing no.10 dengan no.8 dan 12 berpengaruh terhadap jumlah dan berat hasil tangkapan pancing ulur. Hal ini dilihat dari nilai sig mata pancing no.10 sebesar 0,00 dan sig mata pancing no. 8 dan 12 sebesar 0,00 yang menunjukan nilai sig kurang dari 0,05. Ini menunjukan H0 ditolak sehingga disimpulkan bahwa ukuran mata pancing berpengaruh terhadap hasil tangkapan. Komposisi hasil tangkapan selama penelitian berdasarkan jumlah dan berat terdiri atas kembung lelaki, selar bentong, layang, ekor kuning dan ikan buntal. Ikan kembung lelaki adalah jenis ikan yang paling banyak tertangkap selama penelitian yaitu sebesar 41,2% yaitu 364 ekor dari keseluruhan hasil tangkapan. Kata kunci: pancing ulur, ukuran mata pancing, ikan pelagis kecil

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Analisis Depresiasi dan Kebijakan Pengelolaan Sumberdaya Ikan Layang di Wilayah Perairan Kota Ambon

Journal of Agriculture, Resource and Environmental Economics ◽

10.29244/jaree.v1i1.11298 ◽

2014 ◽

Vol 1 (1) ◽

pp. 43-60

Author(s):

Janer Sangaji ◽

Tridoyo Kusumastanto ◽

Sahat M.H. Simanjuntak

Keyword(s):

Open Access ◽

Warning Signal ◽

Pelagic Fish ◽

Small Pelagic Fish ◽

Fish Resources ◽

Fishery Resources ◽

Resource Rents ◽

Lack Of Control ◽

The Government ◽

Main Factor

Generally, fishery resources are open access which means that anyone can participate without having these resources. This is shown by an increase in the utilization of fish resources that will lead to a crisis in which when the rate of exploitation goes beyond the ability of regeneration that makes the catches more economical (economic overfishing). Moreover, this will take place in conditions of uncontrolled fishing. The main factor causing this crisis is the uncontrolled human intervention toward the existing fishery resources. The exploitation of these resources can lead to an imbalance between the input and the potential capture of fish resources so that it can lead to over-fishing, overcapacity, inefficiency arrest, resource rents decline, degradation of the resource stock and a decrease in production. The degradation impact of small pelagic fish resource, especially Layang fish in Ambon also is the reduction of producer welfare, especially the welfare of fishermen and coastal communities. This is due to, among others, the lack of control from the government as the authors,, and the lack of understanding of resource actors (local fishermen) about the nature of fish resources which are open access. Thus, the calculation of the depreciation of small pelagic fish resources, especially lyang fish, and welfare aspects which are considered important to know as a point of reference as well as an early warning signal to determine whether the extraction of small pelagic fish resources, especially layang fish in Ambon has exceeded their capabilities.

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Report of the Fishery Committee for the Eastern Central Atlantic (CECAF) Working Group on the Assessment of Small Pelagic Fish off Northwest Africa, Casablanca, Morocco, 8–13 July 2019; Rapport de Comité des Pêches pour l'Atlantique Centre-Est (COPACE) Groupe de Travail sur l'évaluation des petits pêlagiques au large de l'Afrique nord-occidentale, Casablanca, Maroc, 8–13 juillet 2019

10.4060/ca9562b ◽

2020 ◽

Keyword(s):

Working Group ◽

Pelagic Fish ◽

Small Pelagic Fish ◽

Northwest Africa ◽

Central Atlantic

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Climate Change and Small Pelagic Fish

10.1017/cbo9780511596681 ◽

2001 ◽

Cited By ~ 48

Keyword(s):

Climate Change ◽

Pelagic Fish ◽

Small Pelagic Fish

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The box-balance model: a new tool to assess fish larval survival, applied to field data on two small pelagic fish

Marine Ecology Progress Series ◽

10.3354/meps13369 ◽

2020 ◽

Vol 650 ◽

pp. 289-308 ◽

Cited By ~ 2

Author(s):

V Raya ◽

J Salat ◽

A Sabatés

Keyword(s):

Field Data ◽

Fish Larvae ◽

Larval Growth ◽

Warming Trend ◽

Mortality Rates ◽

Larval Survival ◽

Pelagic Fish ◽

Balance Model ◽

Small Pelagic Fish ◽

Mesoscale Structures

This work develops a new method, the box-balance model (BBM), to assess the role of hydrodynamic structures in the survival of fish larvae. The BBM was applied in the northwest Mediterranean to field data, on 2 small pelagic fish species whose larvae coexist in summer: Engraulis encrasicolus, a dominant species, and Sardinella aurita, which is expanding northwards in relation to sea warming. The BBM allows one to quantify the contribution of circulation, with significant mesoscale activity, to the survival of fish larvae, clearly separating the effect of transport from biological factors. It is based on comparing the larval abundances at age found in local target areas, associated with the mesoscale structures (boxes), to those predicted by the overall mortality rate of the population in the region. The application of the BBM reveals that dispersion/retention by hydrodynamic structures favours the survival of E. encrasicolus larvae. In addition, since larval growth and mortality rates of the species are required parameters for application of the BBM, we present their estimates for S. aurita in the region for the first time. Although growth and mortality rates found for S. aurita are both higher than for E. encrasicolus, their combined effect confers a lower survival to S. aurita larvae. Thus, although the warming trend in the region would contribute to the expansion of the fast-growing species S. aurita, we can confirm that E. encrasicolus is well established, with a better adapted survival strategy.

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Small pelagic fish responses to fine-scale oceanographic conditions: implications for the endangered African penguin

Marine Ecology Progress Series ◽

10.3354/meps12089 ◽

2017 ◽

Vol 569 ◽

pp. 187-203 ◽

Cited By ~ 11

Author(s):

AM McInnes ◽

PG Ryan ◽

M Lacerda ◽

J Deshayes ◽

WS Goschen ◽

...

Keyword(s):

Pelagic Fish ◽

Fine Scale ◽

Small Pelagic Fish ◽

African Penguin ◽

Oceanographic Conditions

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PEMETAAN RANTAI NILAI IKAN PELAGIS KECIL DI KOTA AMBON

PAPALELE (Jurnal Penelitian Sosial Ekonomi Perikanan dan Kelautan) ◽

10.30598/papalele.2018.2.1.15 ◽

2018 ◽

Vol 2 (1) ◽

pp. 15-21

Author(s):

Yolanda MTN Apituley ◽

Dionisius Bawole ◽

Imelda KE Savitri ◽

Friesland Tuapettel

Keyword(s):

Value Chain ◽

Secondary Data ◽

Pelagic Fish ◽

Value Chain Analysis ◽

Small Pelagic Fish ◽

Fresh Fish ◽

Chain Analysis ◽

The Government ◽

Market Distance ◽

Role Of The Government

This research was taken in Ambon (Latuhalat and Laha) and in Central Maluku Regency (Waai) in May – July 2018. It was aimed at mapping the value chain of small pelagic fish in Ambon through: 1) mapping of product, financial and information flows and 2). analysis of percentage distribution of small pelagic fish caught. The data used in this study was primary and secondary data, and analyzed by using value chain analysis. The results show that small pelagic fish marketing chain in Ambon consisted of six models with five actors. Each chain is formed due to the conditions and situation of market, resulted by the influencing of catches of fishermen and traders' capital. The broker plays an important role in marketing small pelagic fish in the market and obtaining 10% of the fishermen's catch that can be distributed, both to retailers and cold storage. Fish caught by the fishermen is still fresh in general when arrives in the consumers, because the fishing area is not too far, the market distance with the production centers is also quite close and in general fishermen and traders have understood the importance of maintaining product quality. Even so, the role of the Government in providing marketing facilities and infrastructure is needed so that modern market conditions can be applied in marketing fresh fish in Ambon.

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A new look on the morphometric characteristics of Congridae leptocephali from the southern Adriatic Sea

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315421000229 ◽

2021 ◽

pp. 1-5

Author(s):

M. Mandić ◽

I. Leonori ◽

A. De Felice ◽

S. Gvozdenović ◽

A. Pešić

Keyword(s):

Fish Species ◽

Adriatic Sea ◽

Pelagic Fish ◽

Morphometric Parameters ◽

Morphological Features ◽

Morphometric Characteristics ◽

Small Pelagic Fish ◽

Acoustic Surveys ◽

Western Side ◽

Conger Conger

Abstract Anguillid leptocephali of three Congridae species (Conger conger, Ariosoma balearicum and Gnathophis mistax) were caught as bycatch of pelagic trawls during acoustic surveys targeting small pelagic fish species in the southern Adriatic Sea, carried out under the framework of the Italian MEDIAS project (western side) and its extension in the ambit of the FAO AdriaMed project (eastern side). Results refer to the findings of Congridae leptocephali during surveys conducted in 2011, 2014, 2015 and 2016. A total of 25 specimens were caught and analysed (morphological features and pigmentation patterns). Leptocephali of Conger conger were found in the range of 8.4–13.1 cm total length (TL) (between 50 and 132 m depth), Ariosoma balearicum from 9.7–12.2 cm TL (between 50 and 128 m depth) and for Gnathophis mystax in the range from 6.4–11.7 cm TL (between 40 and 79 m depth). The results indicate that the southern Adriatic Pit could be the spawning area of these species in the Adriatic Sea. Present data represent a contribution to existing knowledge about the ecology of leptocephali from the Congridae family in the southern Adriatic Sea, and also indicate the existence of differences in morphometric parameters between different areas, that is, the possibility of the existence of new geographic lines within the genus Ariosoma in the Adriatic Sea.

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Impact of the Strong Downwelling (Upwelling) on Small Pelagic Fish Production during the 2016 (2019) Negative (Positive) Indian Ocean Dipole Events in the Eastern Indian Ocean off Java

Climate ◽

10.3390/cli9020029 ◽

2021 ◽

Vol 9 (2) ◽

pp. 29

Author(s):

Jonson Lumban-Gaol ◽

Eko Siswanto ◽

Kedarnath Mahapatra ◽

Nyoman Metta Nyanakumara Natih ◽

I Wayan Nurjaya ◽

...

Keyword(s):

Indian Ocean ◽

Indian Ocean Dipole ◽

Pelagic Fish ◽

Eastern Indian Ocean ◽

Fish Production ◽

Small Pelagic Fish ◽

Field Surveys ◽

Chl A ◽

Positive Indian Ocean Dipole ◽

The Impact

Although researchers have investigated the impact of Indian Ocean Dipole (IOD) phases on human lives, only a few have examined such impacts on fisheries. In this study, we analyzed the influence of negative (positive) IOD phases on chlorophyll a (Chl-a) concentrations as an indicator of phytoplankton biomass and small pelagic fish production in the eastern Indian Ocean (EIO) off Java. We also conducted field surveys in the EIO off Palabuhanratu Bay at the peak (October) and the end (December) of the 2019 positive IOD phase. Our findings show that the Chl-a concentration had a strong and robust association with the 2016 (2019) negative (positive) IOD phases. The negative (positive) anomalous Chl-a concentration in the EIO off Java associated with the negative (positive) IOD phase induced strong downwelling (upwelling), leading to the preponderant decrease (increase) in small pelagic fish production in the EIO off Java.

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