論文

査読有り
2021年1月17日

Growth rate is temperature‐dependent, but the proportion of resource allocation between the growth and gonads is not, in early adult stage of the lancelet branchiostoma japonicum

Marine Ecology
  • Fumio Takeshita
  • ,
  • Takumi Maekawa
  • ,
  • Yasuhisa Henmi

42
1
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/maec.12628
出版者・発行元
Wiley

The pattern of resource allocation into multiple life-history traits can vary with the environment; for example, high temperatures generally facilitate growth. Changes in investment in growth due to temperature may alter the allocation to other traits that are in trade-off with that. Here, we investigated the trade-off between growth and reproduction and whether the proportion of allocation to these varies with increasing seawater temperature in the lancelet Branchiostoma japonicum. We reared the lancelets of early adult stage under three different temperature treatments (control, + 1 degrees C and + 2 degrees C treatments) for 427 days in the laboratory. Although the total body length at initiation did not differ between treatments, the length was influenced by the interaction between elapsed days and temperature treatments, suggesting that growth rate was temperature-dependent; the lancelets under higher temperature conditions showed a more rapid growth rate than did those under the control conditions. The frequency of individuals with gonads did not differ between treatments throughout their reproductive season. The monthly growth increments were also not significantly affected by the interaction between the presence/absence of gonads and temperature treatments, although the presence of gonads caused the growth increments to decrease. In addition, the effect of temperature treatments was significant. These results suggest that changes in temperature did not alter the pattern of allocation between growth and reproduction that were in a trade-off, whereas high temperature would solely result in an increase in resource intake, at least in the early adult stage of this species.

リンク情報
DOI
https://doi.org/10.1111/maec.12628
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000608040000001&DestApp=WOS_CPL
URL
https://onlinelibrary.wiley.com/doi/pdf/10.1111/maec.12628
URL
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/maec.12628
ID情報
  • DOI : 10.1111/maec.12628
  • ISSN : 0173-9565
  • eISSN : 1439-0485
  • Web of Science ID : WOS:000608040000001

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