Can otolith microstructure and elemental fingerprints elucidate the early life history stages of the gadoid southern blue whiting (Micromesistius australis australis)?

Notolabrus fucicola and N. tetricus larvae were reared in the laboratory at a constant temperature of 11°C; both species hatched after 4 days. Mortality was high throughout the post-hatching stage, with no N. tetricus surviving beyond 24 hours post-hatching. Notolabrus fucicola late yolk sac larvae showed no clear incremental structure in their sagittal otoliths up to 9 days post-hatch. The radius of the sagittae of these late yolk sac larvae corresponded with the radius of a non-incremental region around the primordium of sagittae taken from post-settlement juveniles of both species captured in the wild. Therefore, it is likely that the first increment is formed at or near yolk sac absorption in these species. Post-settlement juveniles of both species were exposed to oxytetracycline (OTC) and held in aquaria for up to 33 days. Post-OTC increment counts showed that increments were formed daily in the sagittae of both species.

Download Full-text

Otolith Microstructure during the Early Life-History Stages of Brown Trout: Validation and Interpretation

North American Journal of Fisheries Management ◽

10.1080/02755947.2012.746245 ◽

2013 ◽

Vol 33 (1) ◽

pp. 108-116 ◽

Cited By ~ 9

Author(s):

Julian J. Dodson ◽

Pascal Sirois ◽

Gaétan Daigle ◽

Philippe Gaudin ◽

Agnès Bardonnet

Keyword(s):

Life History ◽

Brown Trout ◽

Early Life ◽

Early Life History ◽

Otolith Microstructure ◽

Life History Stages

Download Full-text

Oceanographic influence on the early life-history stages of benthic invertebrates during the polar night

Polar Biology ◽

10.1007/s00300-021-02918-0 ◽

2021 ◽

Author(s):

Kirstin Meyer-Kaiser ◽

Hongju Chen ◽

Xiaoshou Liu ◽

Samuel R. Laney

Keyword(s):

Life History ◽

Benthic Invertebrates ◽

Early Life ◽

Early Life History ◽

Polar Night ◽

Life History Stages

Download Full-text

Significance of Egg and Larval Size to Recruitment Variability of Temperate Marine Fish

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f91-215 ◽

1991 ◽

Vol 48 (10) ◽

pp. 1820-1828 ◽

Cited By ~ 82

Author(s):

Pierre Pepin ◽

Ransom A. Myers

Keyword(s):

Life History ◽

Marine Fish ◽

Early Life ◽

Univariate Analysis ◽

Early Life History ◽

Fish Populations ◽

Larval Size ◽

Larval Phase ◽

Life History Stages ◽

Recruitment Variability

Recruitment variability is commonly associated with fluctuations in abundance of marine fish populations. Previous studies have focussed on stock-specific correlative or mechanistic models or on comparisons of recruitment variations of several stocks or species. The purpose of this study is to determine whether recruitment variability of commercial marine fish populations is associated with either size or the duration of early life history stages. The analysis was performed with data from 86 stocks representing 21 species of commercial marine fish. Univariate analysis shows that neither egg size nor the length at hatch is significantly correlated with recruitment variability. The change in length during the larval phase, which is representative of the duration of the stage, is significantly positively correlated with recruitment variability. Multivariate analysis shows that recruitment variability increases with increasing length at metamorphosis but that recruitment variability is poorly associated with length at hatch. The degree of serial correlation is related to the relative duration of egg and larval stages. The results clearly indicate that recruitment variability is linked to characteristics of early life history stages.

Download Full-text