Affordable Access

Access to the full text

Effect of temperature and photoperiod on maturation of Cephalothrix hongkongiensis (Nemertea: Palaeonemertea)

Authors
  • Li, Yingdong1
  • Song, Xiaoyue1
  • Zhang, Shanshan1
  • Zhu, Lin1
  • Sun, Shichun1
  • 1 Ocean University of China, Institute of Evolution and Marine Biodiversity, Qingdao, 266003, China , Qingdao (China)
Type
Published Article
Journal
Chinese Journal of Oceanology and Limnology
Publisher
Science Press
Publication Date
Jul 11, 2014
Volume
32
Issue
4
Pages
764–772
Identifiers
DOI: 10.1007/s00343-014-3240-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

The limited knowledge about the relationships between environmental factors and the maturation and reproductive seasonality of nemerteans is mostly obtained from field studies, and in many cases is conjectural. Few species have been studied under well-controlled laboratory conditions. In this work, the effects of temperature and photoperiod on gonad development and spawning of Cephalothrix hongkongiensis were observed by rearing worms under different temperatures and photoperiods. Worms reared at 4°C and 6°C showed no growth or gonadal development, and all died within 109 days. At 8°C and 12°C, gonads could be seen from 90 days to the termination of the 360-day experiment, but no spawning was observed. Worms maintained at 16, 24, and 28°C showed both gonadal development and spawning, and matured faster at higher temperatures. Under a fixed temperature (16°C), photoperiod did not have any significant impact on maturation and spawning. It is likely that temperature plays a major role in regulating the maturation and reproductive cycle of C. hongkongiensis.

Report this publication

Statistics

Seen <100 times