Journal of the World Mariculture Society · 1982 · 22 citations · 10 references
Life SciencesDevelopmental BiologyZoologyFish BiologyInvertebrate ZoologyPhysiological EcologyJuvenile SurvivalLarval DevelopmentLarval PhysiologyLarval RearingLarval SurvivalSeasonal ReproductionLarval Development TimingLarval Photoperiod ResponsesLarval Stage DynamicsLarval Survival RelationshipLight Responses In LarvaePhotoperiod Effects On DevelopmentPhotoperiodic Control Of PupationSeasonal Effects On Insect Development
ABSTRACT Previous experiments showed that larval lobsters reared in culture tanks survived better and developed faster in very short days. Further study has revealed that this phenomenon is modified by season of the year. Larvae have been hatched and reared to Fourth Stage at LD 01:23, LD 12:12 and LD 23:01 in standard planktonkriesels at constant 20°C during each month from February through September. In winter and early spring, best survival was obtained with very short photophase (LD 01:23). In May and June, survival was better in the intermediate daylength (LD 12:12). Rate of development to Fourth Stage also was affected by season. Mean time to 80% metamorphosis was shorter in LD 01:23 in spring and in LD 23:01 in late summer. In general, larvae hatched in late summer took longer to reach Fourth Stage than those hatched in spring. However, size at Fourth Stage did not appear to be influenced by either season or photoperiod.
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