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首页> 外文期刊>Western North American Naturalist >THE LIFE CYCLES OF CLAASSENIA SABULOSA AND HESPEROPERLA PACIFICA (PLECOPTERA: PERLIDAE) IN TWO COLORADO STREAMS
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THE LIFE CYCLES OF CLAASSENIA SABULOSA AND HESPEROPERLA PACIFICA (PLECOPTERA: PERLIDAE) IN TWO COLORADO STREAMS

机译：两个科罗拉多流域的克拉森小球藻和阔叶鲈的生命周期（全缘：PERLIDAE）

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摘要

We compared the life cycles of Claassenia sabitlosa (Banks 1900) and Hesperoperla pacifica (Banks 1900) (Plecoptera: Perlidae) in allopatry and sympatry by studying 4 populations in 3 streams of the South Platte River Watershed, Colorado. We estimated 2-year life cycles for both C. sabulosa and H. pacifica in allopatry and sympatry Evidence of egg diapausing and extended larval recruitment was noted for both species in allopatry and sympatry. There were no apparent differences in larval growth, larval recruitment, or adult emergence periodicity between allopatric and sympatric populations of C. sabulosa. In contrast, allopatric and sympatric H. pacifica populations is exhibited differences in the timing of larval growth, larval recruitment, and adult emergence. We feel that the differences in the life cycles of these populations were likely related to water temperature because a substantial water temperature difference (degree days of 1761 and 2563) occurred between study reaches. In sympatry, H. pacifica adults began emerging 2 weeks earlier than C. sabulosa, when water temperature reached 9 degrees C. The emergence of H. pacifica was synchronous and male biased. The emergence of C. sabulosa was protandrous and male biased and began when water temperature reached 17 degrees C. Claassenia sabulosa emergence was extended and lasted for 6 weeks during July and August. The abundance of C. sabulosa adults during this period corresponded closely to fluctuations in water temperature.
机译：我们通过研究科罗拉多州南普拉特河分水岭的3个溪流中的4个种群，比较了隐孢子虫和共生植物中的Claassenia sabitlosa（班克斯1900）和Hesperoperla pacifica（班克斯1900：Perlidae）的生命周期。我们估计了隐孢子虫和共生动物中球囊隐孢子虫和H. pacifica的2年生命周期。在异相学和共生菌中，都发现了卵滞育和延长幼体募集的证据。在球孢梭菌的同种异体种群和同胞种群之间，幼虫的生长，幼虫的募集或成虫的出现周期没有明显差异。相比之下，同种异养和同胞H. pacifica种群在幼体生长，幼体募集和成年出现的时间上表现出差异。我们认为，这些人群的生命周期差异可能与水温有关，因为研究期间之间出现了较大的水温差异（度数分别为1761和2563）。在交感神经系统中，当水温达到9摄氏度时，太平洋小。虫成虫开始比小球藻早2周出现。太平洋小。虫的出现是同步的，并且有雄性偏见。球果念珠菌的出现是前鞭毛虫和雄性有偏见的，并在水温达到17摄氏度时开始出现。在7月和8月期间，球根绣球菌的出现延长并持续了6周。在此期间，小球藻成虫的丰度与水温的波动密切相关。

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