Seasonal patterns in round goby (Neogobius melanostromus) catch rates, catch composition, and dietary quality

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The round goby (Neogobius melanostomus; Pallas, 1814) is one of the most widespread invasive fish species. It originates from the Black Sea and the Sea of Azov but has un-intentionally been introduced to fresh and brackish water bodies on both sides of the Atlantic. Small-scale fishermen catch large amounts of the invasive round goby as the species continues to spread and populate new areas of the Baltic Sea. We were concerned with the possibilities for a “use and reduce” solution to the round goby invasion. However, to capture the interest of restaurants, supermarkets, and distributers, more information about seasonality in product supply and nutritional quality is needed. We therefore studied a round goby bycatch fishery in the Western Baltic Sea (Denmark) and describe the seasonal dynamics in catch rates, size distribution, condition factor, lipid and protein content, fatty acid profile, and meat texture. We found that while the catch rates peaked in spring, lipid content and meat texture improved significantly, later in the year. Protein content also peaked in late summer and fall, but it was only marginally higher compared to spring. We compare the results to relevant species and conclude that round goby is a relatively lean fish all year (only slightly fatter than for example cod). The firmness of the meat in fall, resembles farmed trout and it has a highly favorable fatty acid composition, reflected by a low n-6 to n-3 ratio. The main bottleneck related to the introduction of round goby to the consumer market is likely going to be the small size.
Original languageEnglish
Article number105412
JournalFisheries Research
Volume222
Number of pages10
ISSN0165-7836
DOIs
Publication statusPublished - 2020

Keywords

  • Round goby
  • Texture
  • Invasive species
  • Fatty acids
  • Dietary quality
  • Lipids

Cite this

@article{0df1493122ec4948999b42d8c67a7458,
title = "Seasonal patterns in round goby (Neogobius melanostromus) catch rates, catch composition, and dietary quality",
abstract = "The round goby (Neogobius melanostomus; Pallas, 1814) is one of the most widespread invasive fish species. It originates from the Black Sea and the Sea of Azov but has un-intentionally been introduced to fresh and brackish water bodies on both sides of the Atlantic. Small-scale fishermen catch large amounts of the invasive round goby as the species continues to spread and populate new areas of the Baltic Sea. We were concerned with the possibilities for a “use and reduce” solution to the round goby invasion. However, to capture the interest of restaurants, supermarkets, and distributers, more information about seasonality in product supply and nutritional quality is needed. We therefore studied a round goby bycatch fishery in the Western Baltic Sea (Denmark) and describe the seasonal dynamics in catch rates, size distribution, condition factor, lipid and protein content, fatty acid profile, and meat texture. We found that while the catch rates peaked in spring, lipid content and meat texture improved significantly, later in the year. Protein content also peaked in late summer and fall, but it was only marginally higher compared to spring. We compare the results to relevant species and conclude that round goby is a relatively lean fish all year (only slightly fatter than for example cod). The firmness of the meat in fall, resembles farmed trout and it has a highly favorable fatty acid composition, reflected by a low n-6 to n-3 ratio. The main bottleneck related to the introduction of round goby to the consumer market is likely going to be the small size.",
keywords = "Round goby, Texture, Invasive species, Fatty acids, Dietary quality, Lipids",
author = "Meike Brauer and Jane Behrens and Mads Christoffersen and Grethe Hyldig and Charlotte Jacobsen and Bj{\"o}rnsdottir, {Katla Hrund} and {van Deurs}, Mikael",
year = "2020",
doi = "10.1016/j.fishres.2019.105412",
language = "English",
volume = "222",
journal = "Fisheries Research",
issn = "0165-7836",
publisher = "Elsevier",

}

Seasonal patterns in round goby (Neogobius melanostromus) catch rates, catch composition, and dietary quality. / Brauer, Meike; Behrens, Jane; Christoffersen, Mads; Hyldig, Grethe; Jacobsen, Charlotte; Björnsdottir, Katla Hrund; van Deurs, Mikael.

In: Fisheries Research, Vol. 222, 105412, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Seasonal patterns in round goby (Neogobius melanostromus) catch rates, catch composition, and dietary quality

AU - Brauer, Meike

AU - Behrens, Jane

AU - Christoffersen, Mads

AU - Hyldig, Grethe

AU - Jacobsen, Charlotte

AU - Björnsdottir, Katla Hrund

AU - van Deurs, Mikael

PY - 2020

Y1 - 2020

N2 - The round goby (Neogobius melanostomus; Pallas, 1814) is one of the most widespread invasive fish species. It originates from the Black Sea and the Sea of Azov but has un-intentionally been introduced to fresh and brackish water bodies on both sides of the Atlantic. Small-scale fishermen catch large amounts of the invasive round goby as the species continues to spread and populate new areas of the Baltic Sea. We were concerned with the possibilities for a “use and reduce” solution to the round goby invasion. However, to capture the interest of restaurants, supermarkets, and distributers, more information about seasonality in product supply and nutritional quality is needed. We therefore studied a round goby bycatch fishery in the Western Baltic Sea (Denmark) and describe the seasonal dynamics in catch rates, size distribution, condition factor, lipid and protein content, fatty acid profile, and meat texture. We found that while the catch rates peaked in spring, lipid content and meat texture improved significantly, later in the year. Protein content also peaked in late summer and fall, but it was only marginally higher compared to spring. We compare the results to relevant species and conclude that round goby is a relatively lean fish all year (only slightly fatter than for example cod). The firmness of the meat in fall, resembles farmed trout and it has a highly favorable fatty acid composition, reflected by a low n-6 to n-3 ratio. The main bottleneck related to the introduction of round goby to the consumer market is likely going to be the small size.

AB - The round goby (Neogobius melanostomus; Pallas, 1814) is one of the most widespread invasive fish species. It originates from the Black Sea and the Sea of Azov but has un-intentionally been introduced to fresh and brackish water bodies on both sides of the Atlantic. Small-scale fishermen catch large amounts of the invasive round goby as the species continues to spread and populate new areas of the Baltic Sea. We were concerned with the possibilities for a “use and reduce” solution to the round goby invasion. However, to capture the interest of restaurants, supermarkets, and distributers, more information about seasonality in product supply and nutritional quality is needed. We therefore studied a round goby bycatch fishery in the Western Baltic Sea (Denmark) and describe the seasonal dynamics in catch rates, size distribution, condition factor, lipid and protein content, fatty acid profile, and meat texture. We found that while the catch rates peaked in spring, lipid content and meat texture improved significantly, later in the year. Protein content also peaked in late summer and fall, but it was only marginally higher compared to spring. We compare the results to relevant species and conclude that round goby is a relatively lean fish all year (only slightly fatter than for example cod). The firmness of the meat in fall, resembles farmed trout and it has a highly favorable fatty acid composition, reflected by a low n-6 to n-3 ratio. The main bottleneck related to the introduction of round goby to the consumer market is likely going to be the small size.

KW - Round goby

KW - Texture

KW - Invasive species

KW - Fatty acids

KW - Dietary quality

KW - Lipids

U2 - 10.1016/j.fishres.2019.105412

DO - 10.1016/j.fishres.2019.105412

M3 - Journal article

VL - 222

JO - Fisheries Research

JF - Fisheries Research

SN - 0165-7836

M1 - 105412

ER -