Profiling the natural settlement habitat of spiny lobster, Panulirus spp. to determine potential diets and rearing conditions in a lobster hatchery

Biodiversitas Journal of Biological Diversity, Journal Year: 2022, Volume and Issue: 23(6)

Published: June 3, 2022

Abstract. Amin M, Harlyan LI, Achmad K, Diantari R. 2022. Profiling the natural settlement habitat of spiny lobster, Panulirus spp. to determine potential diets and rearing conditions in a lobster hatchery. Biodiversitas 23: 2893-2898. The high demand for seeds has triggered research on seed production hatchery system. However, remaining challenges are still determining suitable live environmental at early life stages. Thus, present study investigated larvae as basic information developing an indoor One most common habitats Indonesia, indicated by catching rates, Gerupuk Bay located West-Nusa Tenggara, was selected studied area. Physicochemical biological parameters were obtain profiles. results showed that 18-30 m water depth, 5-6 transparency, sandy, rocky bottom, 27-31oC temperature, 0.1-0.2 m.s-1 current, mg/L dissolved oxygen, <0.01 nitrate, 0.4-0.6 mg/m3 chlorophyll concentration, salinity 30-34 practical unit (psu). Furthermore, found least 16 zooplankton species 25 phytoplankton 0-5 depth. dominant surface Echinocamptus hiemalis elongates (90 indi./L), Tortanus derjugini (20 ind./L) 2.5 Oithona sp. with 46 ind./L 5 While Oscillatoria (9 followed Rhizosolenia (4 Favella ehrenbergii (13 ind./L).

Language: Английский

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Plankton size spectra as an indicator of larval success in Pacific sardine (Sardinops sagax)

Fisheries Oceanography, Journal Year: 2022, Volume and Issue: 32(2), P. 196 - 212

Published: Dec. 7, 2022

Abstract Estimating demographic changes in a population requires the measurement of some minimal combination several vital rates, including flux individuals into population, growth rate, individual rates and mortality rates. For larval fishes, ratio instantaneous to (i.e., their ‘recruitment potential’) has been used make inferences cohort trajectory where measures are not attainable. Attaining estimates is an arduous task, use recruitment potential metric limited. Here, we relate size spectra broader plankton community simultaneously sampled Pacific sardines ( Sardinops sagax ), from three voyages off eastern Australia. As structure determined by growth, there remarkable consistency across ecosystems, test hypothesis that fish reflected community‐level spectra. Contrary expectations, results this study demonstrate negative relationship between slope sardine. However, also other stronger relationships physical oceanographic parameters. Together, suggest unlikely reflect directly. Incorporating size‐based aspects modelling framework with range parameters could further our ability determine how success varies seascape.

Language: Английский

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Interannual variability in early life phenology is driven by climate and oceanic processes in two NE Atlantic flatfishes

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: March 11, 2023

Early life phenology is a crucial factor for population dynamics in climate change scenario. As such, understanding how the early cycle of marine fishes influenced by key oceanic and drivers chief importance sustainable fisheries. This study documents interannual changes two commercial flatfishes: European flounder (Platichthys flesus) common sole (Solea solea) from 2010 to 2015 based on otolith microstructure. Using GAMs, we looked correlations North Atlantic Oscillation (NAO), Eastern pattern (EA), sea surface temperature (SST), chlorophyl concentration (Chla) upwelling (Ui) variation with onset hatch, metamorphosis, benthic settlement day. We concluded that higher SST, more intensive upwelling, EA were coincident later each stage, while increasing NAO induces an earlier stage. Although similar S. solea, P. flesus showed complex interaction environmental drivers, most possibly because it at its southern limit distribution. Our results highlight complexity relationship between conditions fish history, particularly those cycles include migrations coastal areas estuaries.

Language: Английский

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Interannual Variation of Ichthyoplankton Community Structure in the Yellow River Estuary, China

Water, Journal Year: 2023, Volume and Issue: 15(6), P. 1040 - 1040

Published: March 9, 2023

To understand the community structure dynamics of fish eggs and larvae in Yellow River estuary, four trawl surveys were annually conducted between 2011 2014, including at 13 stations 18 2012 2014. A total 2540 143 collected during surveys, comprising 25 species, 8 orders, 16 families, 20 genera. During survey period, species numbers first decreased then increased, while abundances increased decreased. Larval exhibited same trends as for eggs, larval fluctuated across years study. The primary represented by Konosirus punctatus, Sillago sihama, Cynoglossus joyeri, primarily comprised Amblychaeturichthys hexanema, Chaeturichthys stigmatias, Engraulis japonicus. Cluster analysis compositions revealed presence groups, wherein groups 1–3 communities from 12, 3, 2 stations, respectively, that distributed eastern part estuary. In contrast, group only one station western estuary near Bohai Bay. All biodiversity indices lowest egg most correlated with water depth among parameters measured. Overall, interannual variation distribution diversity reflected responses to environmental variability.

Language: Английский

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Molecular underpinnings underlying behaviors changes in the brain of juvenile common carp (Cyrinus carpio) in response to warming

Journal of Advanced Research, Journal Year: 2023, Volume and Issue: 63, P. 43 - 56

Published: Nov. 11, 2023

Global warming is increasing interest in how aquatic animals can adjust their physiological performance and cope with temperature changes. Therefore, understanding the behavioral changes molecular underpinnings fish under crucial for both individual groups survival. This could provide experimental evidence resource evaluating impact of global warming. Three genetic families common carp (Cyprinus carpio) were generated. These juveniles constructed short-term (4 days) long-term (30 to investigate effects on responses elucidate potential underlying mechanisms warming-driven behavior. Behavioral tests used explore short- exposure swimming behavior C. carpio. Brain transcriptome combined measurement nervous system activity was further investigated comprehensive neuromolecular Long-term had a more significant decline juvenile Furthermore, brain comparative transcriptomic analysis revealed that genes involved cytoskeletal organization, mitochondrial regulation, energy metabolism are major regulators Importantly, especially groups, enrichment associated gene expression suggested functional alterations synaptic transmission signal transduction leading function impairment central system, as by tests. Our study provides neurogenomic mechanism decreased carpio findings have important implications impacts climate change ecosystems organisms inhabit them.

Language: Английский

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