Platorchestia platensis (Amphipoda, Talitridae)的季节性静息代谢率

IF 0.6 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Crustaceana Pub Date : 2023-10-27 DOI:10.1163/15685403-bja10328

D. J. Wildish, J. Durante, D. Asnicar, B. De Jourdan

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引用次数: 0

摘要

摘要/ Abstract摘要:在加拿大的印第安点(N.B)采集了Platorchestia platensis的种群，然后在标准温度(约为1℃)下对个体进行驯化(腐木或浮木)和摄氧量测量。19°C)和光照条件(12 - 12小时光照暗)。在较冷的月份里，platensis会降低静息率(=标准代谢率，SMR)，停止生长和繁殖(滞育)。在印第安角，三月底暖季开始时，SMR和生长开始增加。残骸驯化的白顶扁桃SMR在6月夏至前后达到峰值，漂木驯化的种群则在夏至后一个月达到峰值。在北纬45°处，经残肢驯化的扁豆的SMR在6月的高峰之后开始下降，直至9月春分前后进入越冬休眠(=滞育)期。在冬季，残肢适应种群与体型保持反比的代谢关系。在冬季适应漂流木的种群中，与体重的关系消失了。

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Seasonal resting metabolic rate in Platorchestia platensis (Amphipoda, Talitridae)

Abstract Populations of Platorchestia platensis were collected throughout the annual season at Indian Point (N.B., Canada), then acclimated (wrack or driftwood) and oxygen uptake measurements were made on individuals at standard temperature (approx. 19°C) and lighting conditions (12 12-hour light dark). P. platensis reduces resting rate (= standard metabolic rate, SMR) and growth and reproduction cease (diapause) during the colder months. SMR and growth begin increasing when the warm season starts towards the end of March at Indian Point. Wrack-acclimated P. platensis SMR peaks near the summer solstice in June and a month later for driftwood-acclimated populations. The SMR of wrack-acclimated P. platensis at 45°N begins dropping, following the June peak, towards a period of overwintering dormancy (= diapause) to be reached near the vernal equinox in September. Wrack-acclimated populations of P. platensis in winter maintain their inverse metabolic relationship with size. During winter in driftwood-acclimated populations, the relationship with weight is lost.

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来源期刊

Crustaceana 生物-海洋与淡水生物学

CiteScore

1.30

自引率

33.30%

发文量

审稿时长

3 months

期刊介绍： Crustaceana is a leading journal in the world on crustacean research, including the latest papers from all branches of zoology. It provides up-to-date information on aspects such as taxonomy, zoogeography, ecology, physiology, anatomy, genetics, palaeontology, and biometry, and covers all groups of Crustacea. Boasting a large international circulation, Crustaceana provides its readers with an abstract for each article.