Abstract
This paper presents the relations between total length and weight for ten demersal fishes from eastern Korean waters: Alcichthys alcicornis (Steindachner 1881); Cleisthenes pinetorum Jordan et Starks, 1904; Dasycottus setiger Bean, 1890; Gadus macrocephalus Tilesius, 1810; Glyptocephalus stelleri (Schmidt, 1904); Gymnocanthus herzensteini Jordan et Starks, 1904; Gymnocanthus intermedius (Temminck et Schlegel, 1843); Liparis punctulatus (Tanaka, 1916); Lycodes tanakae Jordan et Thompson, 1914; and Pseudopleuronectes herzensteini (Jordan et Snyder, 1901). Fish samples were collected seasonally between 2011 and 2017 using bottom gill net and trammel net. The values of exponents a and b from the weight–length relations (WLRs) were estimated. The WLRs for A. alcicornis, G. herzensteini, G. intermedius, and L. punctulatus were estimated for the first time, and new maximum lengths were recorded for G. herzensteini and L. punctulatus. All the relations between total length and weight were statistically significant (all r2 > 0.937). The values of exponent b, estimated using simple linear least squares of log10-transformed weight and length data, ranged from 2.899 to 3.416.
Highlights
This paper presents the relations between total length and weight for ten demersal fishes from eastern Korean waters: Alcichthys alcicornis (Steindachner 1881); Cleisthenes pinetorum Jordan et Starks, 1904; Dasycottus setiger Bean, 1890; Gadus macrocephalus Tilesius, 1810; Glyptocephalus stelleri (Schmidt, 1904); Gymnocanthus herzensteini Jordan et Starks, 1904; Gymnocanthus intermedius (Temminck et Schlegel, 1843); Liparis punctulatus (Tanaka, 1916); Lycodes tanakae Jordan et Thompson, 1914; and Pseudopleuronectes herzensteini (Jordan et Snyder, 1901)
weight–length relations (WLRs) of (WLR) of a particular species is commonly used to several demersal fishes including 29 demersal fishes and estimate the mean weight for a given length group and commercial righteye flounders inhabiting eastern waters to convert length observations into weights to provide of Korea have been studied (Park and Huh 2015, Kwak a measure of the biomass (Froese 2006, Froese et al and Park 2016), there is still insufficient information
The b values for eight species were found the higher end of the expected range, indicating a tendency towards positive allometry, which is in accordance with the majority of fish species because most large specimens were thicker than small conspecifics (Froese 2006), while those of Dasycottus setiger and Lycodes tanakae were shown negative allometry or isometry, respectively
Summary
This paper presents the relations between total length and weight for ten demersal fishes from eastern Korean waters: Alcichthys alcicornis (Steindachner 1881); Cleisthenes pinetorum Jordan et Starks, 1904; Dasycottus setiger Bean, 1890; Gadus macrocephalus Tilesius, 1810; Glyptocephalus stelleri (Schmidt, 1904); Gymnocanthus herzensteini Jordan et Starks, 1904; Gymnocanthus intermedius (Temminck et Schlegel, 1843); Liparis punctulatus (Tanaka, 1916); Lycodes tanakae Jordan et Thompson, 1914; and Pseudopleuronectes herzensteini (Jordan et Snyder, 1901). Et Schlegel, 1843); Liparis punctulatus (Tanaka, 1916); Studies of morphometric relations are useful tools in Lycodes tanakae Jordan et Thompson, 1914; and fisheries research because they can identify and compare Pseudopleuronectes herzensteini (Jordan et Snyder, specific species, populations and stocks (King 1995, 1901)—are among important commercial fishes in eastern Since stock assessment models and management about WLR parameters for Korean fishes in this region.
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