Integrated assessment of reproductive biology and population parameters of the Lessepsian shrimp Marsupenaeus japonicus (Decapoda: Penaeidae) in the Gulf of Antalya, eastern Mediterranean

Yaşar Özvarol

doi:10.26881/oahs-2026.1.17

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Integrated assessment of reproductive biology and population parameters of the Lessepsian shrimp Marsupenaeus japonicus (Decapoda: Penaeidae) in the Gulf of Antalya, eastern Mediterranean

Oceanological and Hydrobiological Studies

AHEAD OF PRINT

By: Yaşar Özvarol

Open Access

|Jun 2026

Figures & Tables

Map of the study area showing the sampling locations in the Gulf of Antalya (eastern Mediterranean).

Monthly variation of Fulton’s condition factor (K) in male and female M. japonicus. Values represent mean ± SD.

Monthly variation in the GSI of female M. japonicus. GSI, gonadosomatic index.

Monthly variation in the percentage distribution of gonadal maturity stages of female M. japonicus in the Gulf of Antalya.

Size at first sexual maturity (TL50) of female M. japonicus.

Monthly distribution of male and female M_ japonicus individuals sampled in the Gulf of Antalya between January and December 2018_

Month	Female (n)	Male (n)	Total(n)
January	20	17	37
February	20	17	37
March	19	18	37
April	19	21	40
May	24	24	48
June	24	27	51
July	29	28	57
August	29	26	55
September	24	22	46
October	19	18	37
November	15	15	30
December	16	16	32
Total	267	249	516

LWR parameters for M_ japonicus in the Gulf of Antalya_

Group	n	A	B	95% CI of b	R²
Females	267	0.0038	3.3146	3.09–3.34	0.947
Males	249	0.0127	2.7352	2.61–2.90	0.836
Pooled	516	0.0035	3.1814	3.08–3.30	0.924

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DOI: https://doi.org/10.26881/oahs-2026.1.17 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X

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Language: English

Submitted on: Mar 30, 2026

Accepted on: Jun 18, 2026

Published on: Jun 30, 2026

Published by: University of Gdańsk

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

Marsupenaeus japonicus,

Kuruma shrimp,

Lessepsian migration,

reproductive biology,

length–weight relationship,

Related subjects:

© 2026 Yaşar Özvarol, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

AHEAD OF PRINT

Integrated assessment of reproductive biology and population parameters of the Lessepsian shrimp Marsupenaeus japonicus (Decapoda: Penaeidae) in the Gulf of Antalya, eastern Mediterranean

Figures & Tables

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Monthly distribution of male and female M_ japonicus individuals sampled in the Gulf of Antalya between January and December 2018_

LWR parameters for M_ japonicus in the Gulf of Antalya_

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