Fishery, Biology, and Dynamics of Parapenaeopsis maxillipedo (Alcock, 1905) off the SE Coast of Tamil Nadu (India)

4区地球科学 Q3 Earth and Planetary Sciences

Journal of Coastal Research Pub Date : 2024-07-01 DOI:10.2112/JCOASTRES-D-23-00093.1

Hari Prasad Mohale, P. Jawahar, N. Jayakumar, S. Narsale, R. Kadam, Patekar Prakash, G. A. Oli, T. Ravikumar

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Abstract

ABSTRACT Mohale, H.P.; Jawahar, P.; Jayakumar, N.; Swapnil, N.; Kadam, R.V.; Prakash, P.; Oli, G.A., and Ravikumar, T., 2024. Fishery, biology, and dynamics of Parapenaeopsis maxillipedo (Alcock, 1905) off the SE coast of Tamil Nadu (India). Journal of Coastal Research, 40(4), 779–791. Charlotte (North Carolina), ISSN 0749-0208. The current study was carried out between September 2022 to September 2023 from SE coast of Tamil Nadu for Parapenaeopsis shrimp. This shrimp, estimated to rank third in shrimp production, landed as 2216, 2032, and 1704 kg from Thoothukudi, Mandapam, and Nagapattinam landing centers, respectively. The catch per unit effort was calculated to check the abundance of this species and ranged from 21.83 to 96.41 kg, averaging 46.33% in both years. The total length of males and females was observed in the range of 5.5 to 10.5 cm and 6.5 to 12.5 cm, respectively. Female shrimp attained first maturity at 6.5 cm, whereas male shrimp were 5.5 cm. The gonadosomatic index was calculated and found to be the highest (5.64–5.78) in March and September and the lowest in April and October for both years. The absolute fecundity for P. maxillipedo was recorded and ranged from 38,500 to 1,32,000 ova per female. The highest index of relative importance was observed in October and April for both male (57.04) and female (73.82) shrimp. To estimate von Bertalanffy's growth equation in P. maxillipedo, the asymptotic length and growth coefficient (K) growth parameters were combined for both sexes and analyzedas 13.55 cm and 1.5 y–1, respectively. The total mortality and natural mortality (M) were observed as 3.04 and 2.86 y–1, respectively. Hence, fishing mortality was 0.18 y–1, and the exploitation rate (E) was 0.06. The length at first catch per length (LC/L) and M/K values were calculated using the Y/R model as 0.52 and 1.2 for males and 0.48 and 1.3 for females, respectively. E was observed as 0.06, which was lower than the maximum E of 0.4, which showed that the P. maxillipedo fisheries along the SE coast of Tamil Nadu were at unexploited conditions.

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泰米尔纳德邦东南海岸（印度）的 Parapenaeopsis maxillipedo（Alcock，1905 年）的渔业、生物学和动力学情况

ABSTRACT Mohale, H.P.; Jawahar, P.; Jayakumar, N.; Swapnil, N.; Kadam, R.V.; Prakash, P.; Oli, G.A., and Ravikumar, T., 2024.印度泰米尔纳德邦东南海岸 Parapenaeopsis maxillipedo（Alcock，1905 年）的渔业、生物学和动态。Journal of Coastal Research, 40(4), 779-791.夏洛特（北卡罗来纳州），ISSN 0749-0208。目前的研究是在 2022 年 9 月至 2023 年 9 月期间在泰米尔纳德邦东南海岸对 Parapenaeopsis 虾进行的。这种虾估计在虾产量中排名第三，从 Thoothukudi、Mandapam 和 Nagapattinam 上岸中心上岸的重量分别为 2216、2032 和 1704 公斤。计算单位努力量的渔获量是为了检测该物种的丰度，其范围从 21.83 公斤到 96.41 公斤不等，两年的平均值为 46.33%。雌雄虾的总长度分别为 5.5 至 10.5 厘米和 6.5 至 12.5 厘米。雌虾的初成熟体长为 6.5 厘米，而雄虾为 5.5 厘米。计算发现，这两年中，3 月和 9 月的生殖腺指数最高（5.64-5.78），4 月和 10 月最低。根据记录，大菱鲆的绝对繁殖力为每尾雌鱼 38 500 至 1 32 000 卵。雄虾（57.04）和雌虾（73.82）的相对重要性指数在十月和四月最高。为了估算大鳞虾的 von Bertalanffy 生长方程，将雌雄虾的渐近长度和生长系数（K）生长参数合并，分析结果分别为 13.55 厘米和 1.5 y-1。总死亡率和自然死亡率（M）分别为 3.04 和 2.86 y-1。因此，捕捞死亡率为 0.18 y-1，开发率（E）为 0.06。利用 Y/R 模型计算出的雄性和雌性初捕长度（LC/L）和 M/K 值分别为 0.52 和 1.2，0.48 和 1.3。E 值为 0.06，低于最大 E 值 0.4，这表明泰米尔纳德邦东南沿海的大鳞栉水母渔业处于未开发状态。

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来源期刊

Journal of Coastal Research 地学-地球科学综合

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： The Journal of Coastal Research (JCR) is one of the leading international journals for coastal studies and processes, and is published bi-monthly by the Coastal Education & Research Foundation [CERF]. By covering the entire field of coastal research, the JCR encompasses all subjects relevant to natural and engineered environments (freshwater, brackish, or marine) and the protection/management of their resources in the vicinity of coastlines of the world. Even though the journal broadly focuses on immediate shoreline zones, the JCR also embraces those coastal environments that either reach some indefinite distance inland or that extend seaward beyond the outer margins of the sublittoral (neritic) zone. The JCR disseminates accurate information to both the public and research specialists around the world on all aspects of coastal issues in an effort to maintain or improve the quality of our planet''s shoreline resources.