Distribution and Biology of Duskyfin Glassy Perchlet Parambassis wolffii (Ambassidae) in the Mekong River Delta, Vietnam-Reference-Cited by-同舟云学术

Distribution and Biology of Duskyfin Glassy Perchlet Parambassis wolffii (Ambassidae) in the Mekong River Delta, Vietnam

Published:2023-09-01 Issue:5 Volume:63 Page:534-544
ISSN:0042-8752
Container-title:Вопросы ихтиологии
language:
Short-container-title:Voprosy ihtiologii

Author:

Ablyazov E. R.¹²,Chesnokova I. I.¹²,Kutsyn D. N.¹²,Karpova E. P.¹²,Kurshakov S. V.¹²,Dịnh Cu Nguyen³,Hai Truong Ba³

Affiliation:

1. Institute of Biology of the Southern Seas, Russian Academy of Sciences, Sevastopol, Russia

2. Severtsov Institute of Ecology and Evolution, Russian Academy of Svciences, Russian Academy of Sciences, Moscow, Russia

3. Joint Russian-Vietnamese Tropical Research and Technological Center, Southern Center, Ho Chi Minh City, Vietnam

Abstract

The results of the study of the distribution and biology of the duskyfin glassy perchlet Parambassis wolffii (Bleeker, 1850) in the Mekong Delta in 2019–2020 are presented. It is established that the species reaches the highest abundance and biomass in the freshwater part of the delta. The water temperature at which individuals of the species were encountered was 27.8–34.1°C, salinity, up to 1.51‰, depths, from 2 to 35 m. The maximum total length of females and males was 20.0 and 14.7 cm, respectively, and the maximum age was 6 years. The parameters of the von Bertalanffy equation are as follows: the maximum length is 17.2 cm, the growth rate constant is 0.18, t0 = −2.35. The value of the coefficient b in the equation on the weight-length relationship is 3.002 ± 0.056 for females (isometry) and 2.774 ± 0.064 for males (negative allometry). Intersexual differences by the in Fulton’ condition factor were established: in females 3.71 ± 0.04, in males 3.53 ± 0.03. The first mature individuals were found at a length of 7–8 cm at the age of 1+.

Publisher

The Russian Academy of Sciences

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