Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube
The population structure, growth, and relative condition factor of the eastern prawn, Macrobrachium nipponense (De Haan, 1849), in the first years of its introduction into the Kiliya Delta of the Danube were studied. The quantitative predominance of males over females (♀ : ♂ = 1.0 : 2.5) was establi...
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Publishing House "Akademperiodyka"
2025-05-01
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| Online Access: | https://ojs.akademperiodyka.org.ua/index.php/Zoodiversity/article/view/693 |
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| author | K. Ye. Zorina-Sakharova K. I. Hoshka A. V. Lіashenko V. A. Lіashenko |
| author_facet | K. Ye. Zorina-Sakharova K. I. Hoshka A. V. Lіashenko V. A. Lіashenko |
| author_sort | K. Ye. Zorina-Sakharova |
| collection | DOAJ |
| description | The population structure, growth, and relative condition factor of the eastern prawn, Macrobrachium nipponense (De Haan, 1849), in the first years of its introduction into the Kiliya Delta of the Danube were studied. The quantitative predominance of males over females (♀ : ♂ = 1.0 : 2.5) was established, with egg-bearing females comprising 10.0 % of the total prawn population. PCA results indicate that TL and AL are the primary differences separating females from most males, while egg-bearing and non-egg-bearing females differ in most morphometric parameters, with the key traits being RChL, LChL, and 1AbH. LDA results showed that males, egg-bearing and non-egg-bearing females differed significantly in the population based on the studied characteristics. The growth coefficients indicated a positive allometric growth type for males (b = 3.62) and near-isometric growth for females (b = 3.09). For 65.4 of females and 57.8 % of males, the values of the condition factor Kn > 1, indicating high fatness in individuals of both sexes. |
| format | Article |
| id | doaj-art-f8a822a003da4b8d8b285a068cc3a4a6 |
| institution | Matheson Library |
| issn | 2707-725X 2707-7268 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Publishing House "Akademperiodyka" |
| record_format | Article |
| series | Zoodiversity |
| spelling | doaj-art-f8a822a003da4b8d8b285a068cc3a4a62025-06-27T11:45:46ZengPublishing House "Akademperiodyka"Zoodiversity2707-725X2707-72682025-05-0159310.15407/zoo2025.03.217693Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the DanubeK. Ye. Zorina-Sakharova0K. I. Hoshka1A. V. LіashenkoV. A. Lіashenko2Institute of Hydrobiology NAS of UkraineEducational and Scientific Center «Institute of Biology and Medicine» of Taras Shevchenko National University of Kyiv, UkraineEducational and Scientific Center «Institute of Biology and Medicine» of Taras Shevchenko National University of Kyiv, UkraineThe population structure, growth, and relative condition factor of the eastern prawn, Macrobrachium nipponense (De Haan, 1849), in the first years of its introduction into the Kiliya Delta of the Danube were studied. The quantitative predominance of males over females (♀ : ♂ = 1.0 : 2.5) was established, with egg-bearing females comprising 10.0 % of the total prawn population. PCA results indicate that TL and AL are the primary differences separating females from most males, while egg-bearing and non-egg-bearing females differ in most morphometric parameters, with the key traits being RChL, LChL, and 1AbH. LDA results showed that males, egg-bearing and non-egg-bearing females differed significantly in the population based on the studied characteristics. The growth coefficients indicated a positive allometric growth type for males (b = 3.62) and near-isometric growth for females (b = 3.09). For 65.4 of females and 57.8 % of males, the values of the condition factor Kn > 1, indicating high fatness in individuals of both sexes.https://ojs.akademperiodyka.org.ua/index.php/Zoodiversity/article/view/693invasive crustaceanssex structuremorphometric analysisprawn growthrelative condition factor |
| spellingShingle | K. Ye. Zorina-Sakharova K. I. Hoshka A. V. Lіashenko V. A. Lіashenko Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube Zoodiversity invasive crustaceans sex structure morphometric analysis prawn growth relative condition factor |
| title | Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube |
| title_full | Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube |
| title_fullStr | Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube |
| title_full_unstemmed | Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube |
| title_short | Population Structure of the Eastern Prawn, Macrobrachium nipponense (Crustacea, Decapoda, Palaemonidae), in the First Years of its Introduction into the Kiliya Delta of the Danube |
| title_sort | population structure of the eastern prawn macrobrachium nipponense crustacea decapoda palaemonidae in the first years of its introduction into the kiliya delta of the danube |
| topic | invasive crustaceans sex structure morphometric analysis prawn growth relative condition factor |
| url | https://ojs.akademperiodyka.org.ua/index.php/Zoodiversity/article/view/693 |
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