Distribution of Anisakis larvae, identified by genetic markers, and their use for stock characterization of demersal and pelagic fish from European waters: an update

2007 ◽  
Vol 81 (2) ◽  
pp. 117-127 ◽  
Author(s):  
S. Mattiucci ◽  
P. Abaunza ◽  
S. Damiano ◽  
A. Garcia ◽  
M.N. Santos ◽  
...  
Keyword(s):  
Fish Species ◽  
Population Genetic ◽  
Genetic Data ◽  
Pelagic Fish ◽  
Canonical Discriminant Analysis ◽  
Fish Populations ◽  
Trachurus Trachurus ◽  
Merluccius Merluccius ◽  
Fish Hosts

AbstractIn the present paper, recent results obtained on the use of different distributions observed in larval species of Anisakis, genetically identified by means of allozyme markers, for stock characterization of demersal (Merluccius merluccius), small (Trachurus trachurus) and large pelagic (Xiphias gladius) finfish species in European waters, are reviewed and discussed. Several species of Anisakis were identified in the three fish hosts: A. simplex (s.s.), A. physeteris, A. typica, A. ziphidarum,A. pegreffii, A. brevispiculata and A. paggiae. Canonical discriminant analysis performed on all the samples of the three fish species collected in areas comprising their geographical range, according to the different species of Anisakis identified, showed distinct fish populations in European waters. In all the three fish hosts, the pattern of distribution of Anisakis larvae allowed discrimination of Mediterranean stocks from Atlantic stocks. In the case of swordfish, the possible existence of a southern Atlantic stock separated from a northern one is also suggested. Congruence and discordance with the population genetic data inferred from allozyme markers on the same samples of the three fish species are also discussed.

Preparaciôn y caracterización química y microestructural de surimi de merluza (Merluccius merluccius) y de jurel (Trachurus trachurus) / Preparation and chemical and microstructural characterization of surimi from hake (Merluccius merluccius) and horse mackerel (Trachurus trachurus)

1997 ◽  
Vol 3 (1) ◽  
pp. 49-60 ◽  
Author(s):  
E. Álvarez-Parrilla ◽  
A. Puig ◽  
M.A. Lluch
Keyword(s):  
Microstructural Characterization ◽  
Fish Muscle ◽  
Horse Mackerel ◽  
Muscle Fibres ◽  
Trachurus Trachurus ◽  
Merluccius Merluccius ◽  
Typical Structure ◽  
Low Protein ◽  
Protein Density

Surimi and kamaboko prepared from hake ( Merluccius merluccius) and horse mackerel ( Trachurus trachurus) were characterized chemically and microstructurally. During the process, protein and lipid values decreased while ash, chloride and free nitrogen extract values increased. Hake surimi and kamaboko had less humidity and a higher value of protein than horse mackerel surimi and kamaboko. In both gels water activity decreased and whiteness increased. Horse mackerel kamaboko was more elastic while hake kamaboko was harder and more brittle. The microstructural study showed that the typical structure of fish muscle was lost, giving rise to a porous protein matrix with regions of high and low protein density, as well as some fragments of muscle fibres.

Population genetic data and forensic parameters of the 27 Y-STR panel Yfiler® Plus in Russian population

2021 ◽  
Author(s):  
Andrei Semikhodskii ◽  
Yevgeniy Krassotkin ◽  
Tatiana Makarova ◽  
Vladislav Zavarin ◽  
Viktoria Ilina ◽  
...  
Keyword(s):  
Population Genetic ◽  
Genetic Data ◽  
Russian Population ◽  
Population Genetic Data ◽  
Forensic Parameters

Characterization of population genetic structure of hereditary transthyretin amyloidosis in Bulgaria

Amyloid ◽  
2021 ◽  
pp. 1-7
Author(s):  
Zornitsa Pavlova ◽  
Stayko Sarafov ◽  
Tihomir Todorov ◽  
Andrey Kirov ◽  
Teodora Chamova ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Transthyretin Amyloidosis ◽  
Hereditary Transthyretin Amyloidosis

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

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.

Modelling the effects of establishing a marine reserve for mobile fish species

2002 ◽  
Vol 59 (3) ◽  
pp. 405-415 ◽  
Author(s):  
P Apostolaki ◽  
E J Milner-Gulland ◽  
M K McAllister ◽  
G P Kirkwood
Keyword(s):  
Fish Species ◽  
Marine Reserve ◽  
High Mobility ◽  
Merluccius Merluccius ◽  
Seasonal Movements ◽  
Stock Biomass ◽  
Spawning Stock ◽  
Short And Long Term ◽  
Immature Fish

We present a model of the effects of a marine reserve on spawning stock biomass (SSB) and short- and long-term yield for a size-structured species that exhibits seasonal movements. The model considers the effects of protecting nursery and (or) spawning grounds under a range of fishing mortalities and fish mobility rates. We consider two extremes of effort redistribution following reserve establishment and analyze the effects of a reserve when the fishery targets either mature or immature fish. We apply the model to the Mediterranean hake (Merluccius merluccius) and show that a marine reserve could be highly beneficial for this species. We demonstrate benefits from reserves not just for overexploited stocks of low-mobility species, but also (to a lesser extent) for underexploited stocks and high-mobility species. Greatly increased resilience to overfishing is also found in the majority of cases. We show that a reserve provides benefits additional to those obtained from simple effort control. Benefits from reserves depend to a major extent on the amount of effort redistribution following reserve establishment and on fishing selectivity; hence, these factors should be key components of any evaluation of reserve effectiveness.

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