来自维斯瓦河泻湖的棘颊螯虾（Orconectes limosus Raf.）的繁殖力
Fertility of Spiny-Cheek Crayfish (Orconectes limosus Raf.) from the Vistula Lagoon.
作者信息
Graczyk Radomir, Chachaj Bogusław, Stanek Magdalena, Dąbrowski Janusz, Gackowski Grzegorz
机构信息
Department of Animal Biology and Environment, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Hetmańska St. 33, 85-039, Bydgoszcz, Poland.
Department of Animal Physiology, Physiotherapy and Nutrition, Faculty of Animal Breeding and Biology, UTP University of Science and Technology, Mazowiecka St. 28, 85-084, Bydgoszcz, Poland.
出版信息
Bull Environ Contam Toxicol. 2019 Mar;102(3):365-370. doi: 10.1007/s00128-019-02543-y. Epub 2019 Jan 17.
The aim of this study was to examine fertility of spiny-cheek crayfish harvested in the first half of April from the Vistula Lagoon and to compare it with that of the crayfish from freshwater habitats. The sample consisted of 47 sexually mature females shortly before they were ready to lay eggs. After determining the absolute fertility (number of eggs per ovary), the relative fertility was calculated (number of eggs per 1 g of body weight). Absolute and relative fertility of spiny-cheek crayfish females with total body length 8.1-11.6 cm was 535 and 17 eggs, respectively. Absolute and relative fertility was correlated with total body length and weight. Along with the increase in these parameters, the absolute fertility increased and the relative fertility decreased. A comparison of absolute and relative fertility of spiny-cheek crayfish from the Vistula Lagoon with the representatives of this species from freshwater habitats such as the Brda River and the Lake Dgał Wielki, showed no significant differences.
本研究的目的是检测4月上半月从维斯瓦河泻湖捕获的刺颊螯虾的繁殖力，并将其与来自淡水栖息地的螯虾的繁殖力进行比较。样本包括47只即将产卵的性成熟雌性。在确定绝对繁殖力（每个卵巢的卵数）后，计算相对繁殖力（每1克体重的卵数）。体长8.1 - 11.6厘米的刺颊螯虾雌性的绝对繁殖力和相对繁殖力分别为535个卵和17个卵。绝对繁殖力和相对繁殖力与体长和体重相关。随着这些参数的增加，绝对繁殖力增加而相对繁殖力下降。将来自维斯瓦河泻湖的刺颊螯虾的绝对繁殖力和相对繁殖力与来自淡水栖息地（如布尔达河和大加尔维湖）的该物种代表进行比较，未发现显著差异。
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