Diet composition and reproductive biology of spineless cuttlefish Sepiella inermis (Orbigny, 1848) from Ratnagiri (Arabian Sea, North-west coast of India)

IF 0.4 4区农林科学 Q4 FISHERIES

Indian Journal of Fisheries Pub Date : 2023-09-30 DOI:10.21077/ijf.2023.70.3.117778-06

P. L. Mahadwala, V. Nirmale, S. Metar, B. P. Bhosale, R. A. Pawar, N. D. Chogale

引用次数: 0

Abstract

In the present study, we investigated some biological aspects of the spineless cuttlefish,Sepiella inermis (Orbigny, 1848) along the Ratnagiri coast of Maharashtra, India. A study ondiet composition and reproductive biology of the species was carried out. Dorsal mantlelength (DML) ranged from 35.9 to 93.3 mm for males and 29.3 to 98 mm for females.Feeding intensity was noted to be low during most of the study period. S. inermis was foundto have a protracted spawning season. The overall male: female ratio was 1:1.02 during thestudy period. The average fecundity was found to be 358 eggs. Length at sexual maturitywas estimated to be 42 mm and 53 mm for males and females respectively. The informationobtained from the study will help the fishery agencies to formulate management measuresin sustaining the landings of S. inermis in the region. Keywords:Biological studies, Cephalopods, Maharashtra,Ratnagiri coast, Sepiella inermis, Spinelesscuttlefish

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Ratnagiri （印度西北海岸阿拉伯海）无刺墨鱼 Sepiella inermis (Orbigny, 1848) 的食物组成和生殖生物学特征

本研究调查了印度马哈拉施特拉邦 Ratnagiri 海岸无刺墨鱼 Sepiella inermis (Orbigny, 1848) 的一些生物学特性。对该物种的食物组成和繁殖生物学进行了研究。雄性背甲长度（DML）为 35.9 至 93.3 毫米，雌性背甲长度为 29.3 至 98 毫米。研究发现，S. inermis 的产卵期较长。在研究期间，总体雌雄比例为 1:1.02。平均受精率为 358 个卵。据估计，雄鱼和雌鱼的性成熟体长分别为 42 毫米和 53 毫米。研究获得的信息将有助于渔业机构制定管理措施，以维持该地区的鳗鲡上岸量。关键词：生物研究头足类马哈拉施特拉邦 Ratnagiri 海岸 Sepiella inermis 无刺墨鱼

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来源期刊

Indian Journal of Fisheries FISHERIES-

CiteScore

0.90

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Indian Journal of Fisheries is published quarterly by the Indian Council of Agricultural Research (ICAR), New Delhi. Original contributions in the field of Fish and fisheries science are considered for publication in the Journal. The material submitted must be unpublished and not under consideration for publication elsewhere. Papers based on research which kills or damages any species, regarded as thratened/ endangered by IUCN crieteria or is as such listed in the Red Data Book appropriate to the geographic area concerned, will not be accepted by the Journal, unless the work has clear conservation objectives.