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首页> 外文期刊>ICES Journal of Marine Science >Sexual maturity of the edible crab (Cancer pagurus) in the Skagerrak and the Kattegat, based on reproductive and morphometric characters
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Sexual maturity of the edible crab (Cancer pagurus) in the Skagerrak and the Kattegat, based on reproductive and morphometric characters

机译：基于生殖和形态特征，斯卡格拉克和卡特加特河蟹的可食用性成熟度

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摘要

The size at the onset of sexual maturity of female and male edible crab (Cancer pagurus) from the Skagerrak and the Kattegat and the fecundity of females were estimated. Physiological maturity of females, i.e. ovary development, was at a larger size than behavioural maturity (indications of successful copulation). The carapace width (CW) at which 50% of females were mature (CW_(50)), based on development of the gonads, was 132 mm, sperm presence gave a CW_(50) of 107 mm, and the presence of sperm plugs a CW_(50) of 118 mm. Changes in relative abdominal width were found at approximately 100 and 130 mm, and CW_(50) was 104 mm. A smaller fraction (25%) of the females is functionally mature at sizes < 140 mm. However, male physiological and functional maturity was more synchronized: CW50s based on advanced sperm production and allometric changes in the chelae were within 5 mm (117 — 122 mm). Size-specific fecundity increases with CW (0.5-2.5 million eggs). Recommendations for a minimum landing size (MLS) of 140 mm and a change of escape gap size to 90 mm are given. Legislation of a MLS of 140 mm CW for females and males will reduce future potential landings more in the Skagerrak than in the Kattegat.
机译：估计了斯卡格勒克和卡特加特海峡雌雄成年食用蟹（Cancer pagurus）在性成熟时的大小和雌性的繁殖力。女性的生理成熟度（即卵巢发育）比行为成熟度大（交配成功的征兆）。根据性腺的发育情况，有50％的雌性成熟的甲壳宽度（CW_（50））为132 mm，精子的存在使CW_（50）为107 mm，并且存在精子塞118毫米的CW_（50）。发现腹部相对宽度的变化约为100和130 mm，CW_（50）为104 mm。小于140毫米的雌性小部分（25％）在功能上成熟。但是，男性的生理和功能成熟更加同步：基于先进的精子生产和the的异体变化的CW50在5毫米（117-122毫米）之内。大小特定的繁殖力随CW（0.5-250万个卵）增加。给出了最小着陆尺寸（MLS）为140毫米并将逸出间隙尺寸更改为90毫米的建议。立法规定，对于女性和男性，最大连续运动量级为140毫米，将比卡特加特邦减少Skagerrak未来潜在着陆的可能性。

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