Modelling the effect of temperature on hatching and settlement patterns of meroplanktonic organisms: the case of octopus

Scientia Marina

George Verriopoulos¹  Stelios Katsanevakis¹ 

[1] University of Athens, Faculty of Biology, Department of Zoology-Marine Biology, Atenas;

关键词: cephalopod;    hatching pattern;    octopus vulgaris;    recruitment;    settlement;    spawning;    temperature;   

DOI  :  10.3989/scimar.2006.70n4699

来源: DOAJ

【 摘 要 】

The duration of embryonic development and the planktonic stage of meroplanktonicspecies is highly temperature dependent and thus the seasonal temperatureoscillations of temperate regions greatly affect the patterns of hatchingand benthic settlement. Based on data from the literature on embryonic developmentand planktonic duration of Octopus vulgaris (common octopus) in relationto temperature, and on observed temperature patterns, several models of hatchingand settlement patterns were created. There was a good fit between observedsettlement patterns and model predictions. Based on these models we concludedthat in temperate regions: (1) when temperature is increasing (from earlyspring to mid summer) the hatching and settlement periods tend to shorten,while when the temperature is decreasing (during autumn) the hatching andsettlement periods tend to lengthen; (2) hatching and settlement peaks arenarrower and more intense than a spring spawning peak but wider and lessintense than an autumn spawning peak; (3) at lower latitudes, hatching andsettlement patterns tend to follow the spawning pattern more closely, (4)the periodic temperature pattern of temperate areas has the potential tocause a convergence of hatching during spring.

【 授权许可】

Unknown