Short-term variations in the early life history traits of common sardine Strangomera bentincki and anchoveta Engraulis ringens off central Chile

Molina-Valdivia, Víctor; Landaeta, Mauricio F.; Castillo, Manuel; Alarcón, Darly; Plaza, Guido

doi:10.1016/j.fishres.2019.105460

Cited by 5 publications

(3 citation statements)

References 44 publications

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“…We observed a shift in the relationship at the end of the larval stage (OL, 0.20-0.25 mm). The same result was also observed in Cirrhinus molitorella [35], Siniperca chuatsi [45], Strangomera bentincki, and Engraulis ringens [47], indicating the likelihood that this shift is brought on by endogenous factors such as genetics, onto-genetics, and physiology.…”

Section: Discussionsupporting

confidence: 68%

Growth and Microstructural Features in Otoliths of Larval and Juvenile Sinogastromyzon wui (F. Balitoridae, River Loaches) of the Upper Pearl River, China

Gao

Huang

et al. 2022

Fishes

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Otolith growth and microstructural features of fish are essential to the understanding of the early fish lifecycle. This paper assesses the features of otoliths from laboratory-reared larval and juvenile Sinogastromyzon wui (S. wui, 0 to 25 days post-hatching) that were obtained as eggs from the Shilong Reach of Xijiang River between April and August 2021. We observed the development of the three pairs of otoliths (lapilli, sagittae, and asterisci) and compared the shape changes and growth of the lapilli and sagittae, as well as the timing and deposition rate of increments of the lapilli. The lapilli and the sagittae were visible on hatching, whereas the asterisci were present at four days post-hatching (dph). The shape of the sagitta changed more obviously than that of the lapillus, and a strong correlation was observed between sagitta shape changes and fish ontogenesis. The otolith shape greatly modulated during the post-flexion larval stage (Post-FLS), it corresponded with the formation period of individual fins. Analysis of the microstructural features indicated that lapilli were the optimal otolith for age determination and increment deposition rate confirmation. Using regression analysis of the known age and the number of lapillus daily increments, we demonstrated that the lapillus developmental increments were deposited daily, and the first increment formed at two days post-hatching. Our conclusions support employing the lapillus increment deposition rate and the time of the first daily increments in the determination of the age of wild larval and juvenile S. wui.

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Section: Discussionsupporting

confidence: 68%

Growth and Microstructural Features in Otoliths of Larval and Juvenile Sinogastromyzon wui (F. Balitoridae, River Loaches) of the Upper Pearl River, China

Gao

Huang

et al. 2022

Fishes

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“…In the latter, only one springborn specimen was captured during these surveys, with no post-larvae being captured at all, thus suggesting a selective survival of later born sprats. Colder conditions experienced in spring may be disadvantageous for larval development (Baumann et al, 2008), although this warrants a more detailed assessment since the response to cold water temperatures of clupeid larvae can vary rapidly and is species-specific (Molina-Valdivia et al, 2020). Also, density-dependent control (Baumann et al, 2007) could be taking place during this period of major spawning in the MPAN-BB (García Alonso et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Growing Up Down South: Spatial and Temporal Variability in Early Growth of Fuegian Sprat Sprattus fuegensis From the Southwest Atlantic Ocean

et al. 2020

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The Fuegian sprat Sprattus fuegensis represents one of the most important pelagic resources in the Southwest Atlantic Ocean (SWAO), exerting a crucial ecological role as an intermediary link in Patagonian food webs. Otolith microstructure of 217 age-0 sprats were analyzed aiming to characterize growth patterns and possible environmental effects over them. Samples were gathered during three oceanographic surveys (spring 2014; autumns 2016, 2017) in Tierra del Fuego (TDF) and the Marine Protected Area Namuncurá-Burdwood Bank (MPAN-BB), the first Argentinian open-sea marine protected area. Daily growths (DG) of larvae and post-larvae were estimated by individually modeling size and otolith radius relationships through back-calculation procedures using potential and linear functions, respectively. Increment widths (IW) and DG values and trajectories were assessed for older sprats (i.e., survivors) sampled in the autumn surveys considering the habitat, year sampled and sprats' hatching seasons, and were additionally evaluated in relation to sea-surface temperature (SST). IW and DG trajectories differed primarily according to the habitat sampled and sprats' hatching seasons. Overall, strong coupling was detected between IW and DG trajectories with SST in both habitats. However, statistical assessment on particular comparisons showed that this general trend is not strictly invariant. Even though several results pinpointed a positive correlation between IW and DG with SST, the highest DG were estimated for summer-and autumn-born sprats sampled in 2016 in the MPAN-BB, period and habitat with the lowest SST values. These results unveil a complex relationship between spatial and temporal variability during early growth of Fuegian sprats, supplying relevant information that could be used in the creation of adequate ecosystem based management strategies in the SWAO.

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“…The growth rates observed in our experiment (Table 1 ) are within the range of those reported for Peruvian anchovy larvae in the wild at slightly lower temperatures (12–16 °C, Table 2 ). Although recent studies reported a decline in the somatic growth rate of Peruvian anchovy at temperatures above 15 °C 33 , there are no growth records for wild-caught larvae at temperatures above 16 °C. This lack of knowledge may be because studies conducted so far have been carried out in Chilean coastal waters, where the sea temperature is colder than in Peruvian waters.…”

Section: Discussionmentioning

confidence: 96%

Temperature and prey density drive growth and otolith formation of the world's most valuable fish stock

Ofelio,

Moyano,

Sswat

et al. 2023

Sci Rep

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Peruvian anchovy (Engraulis ringens) represents the largest single-species fishery worldwide. Knowledge on how temperature and prey availability influences growth and age estimation during marine fish early life stages is critical for predicting bottom-up processes impacting stock productivity under changing environmental conditions. We reared Peruvian anchovy larvae at two temperatures (14.5 and 18.5 °C) and prey concentrations [high (HF), and low (LF)] from 6 to 30 days post-hatch (dph) to measure growth rate and examine daily deposition of otolith increments. Peruvian anchovy larvae grew faster at 18.5 °C compared to 14.5 °C. Larvae reared at low prey concentration (18.5-LF) and low temperature (14.5-HF) grew 61 and 35% slower, respectively, than those at high prey and warm temperature (18.5-HF). Age and growth rates of larvae were well depicted in the otolith microstructure of well-fed larvae at 18.5 °C. However, larvae reared at 18.5-LF or 14.5-HF, had only 55 and 49% of the expected number of daily otolith increments. Our results suggest caution when attempting to explore how ocean processes regulate small pelagic stocks, the productivity of which are largely driven by changes in the survival and growth of young larvae.

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Short-term variations in the early life history traits of common sardine Strangomera bentincki and anchoveta Engraulis ringens off central Chile

Cited by 5 publications

References 44 publications

Growth and Microstructural Features in Otoliths of Larval and Juvenile Sinogastromyzon wui (F. Balitoridae, River Loaches) of the Upper Pearl River, China

Growth and Microstructural Features in Otoliths of Larval and Juvenile Sinogastromyzon wui (F. Balitoridae, River Loaches) of the Upper Pearl River, China

Growing Up Down South: Spatial and Temporal Variability in Early Growth of Fuegian Sprat Sprattus fuegensis From the Southwest Atlantic Ocean

Temperature and prey density drive growth and otolith formation of the world's most valuable fish stock

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