从博物馆标本看高原石辊虫的繁殖季节

C. Tumlison, H. Robison, G. Wills
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引用次数: 0

摘要

高地石辊虫(Campostomaspadiceum)在2010年被描述为一个独特的物种。从那时起,唯一针对该物种的研究是对分布的调查,对繁殖一无所知。我们检查了亨德森州立大学鱼类收藏中的134个批次,包括315个锹状C.spadiceum标本,以评估繁殖事件的时间。我们解剖个体以揭示性别和生殖状况。总长度只有49毫米的雌性正在受精,到10月卵泡已经发育成熟。从1月到5月采集的标本中都有成熟的卵子,但在3月到5月份最为常见。一些雌性在3月初产卵,大多数似乎产卵的标本很可能在4月产卵。早在1月和2月,雄性就出现了核结节,但大多数成年雄性在3月至5月期间都完全结了瘤。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Reproductive Season of the Highland Stoneroller, Campostoma spadiceum, Evidenced by Museum Specimens
The Highland Stoneroller ( Campostoma spadiceum ) was described as a distinct species in 2010. Since then, the only study specific to this species is a survey of distribution, and nothing is known about reproduction. We examined 134 lots including 315 specimens of C. spadiceum housed in the Henderson State University collection of fishes to evaluate the timing of reproductive events. We dissected individuals to reveal sex and reproductive status. Females as small as 49 mm total length were yolking eggs, and follicles were in development by October. Ripe (mature) eggs were present in specimens collected from January through May, but were most common in March through May. Several females had oviposited in early March, and most specimens that appeared to have spawned had done so likely in April. Nuptial tubercles appeared on males as early as January and February, but most adult males were fully tuberculated from March through May.
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