Increasing reproductive capacity in female blue swimmer crabs using vitellogenesis-inhibiting hormone dsRNA

Aquaculture Reports, Journal Year: 2025, Volume and Issue: 42, P. 102827 - 102827

Published: April 21, 2025

Language: Английский

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Ensemble modeling of black pomfret (Parastromateus niger) habitat in the Taiwan Strait based on oceanographic variables

PeerJ, Journal Year: 2023, Volume and Issue: 11, P. e14990 - e14990

Published: March 9, 2023

The location, effort, number of captures, and time fishing were all used in this study to assess the geographic distribution Parastromateus niger Taiwan Strait. Other species models performed worse than generalized linear (GLMs) based on six oceanographic parameters. sea surface temperature (SST) was between 26.5 °C 29.5 °C, chlorophyll (SSC) level 0.3–0.44 mg/m 3 , salinity (SSS) 33.4 34.4 mixed layer depth 10 14 height 0.57 0.77 eddy kinetic energy (EKE) 0.603 °C. According statistical findings, SST is merely a small effect compared SSS, SSC level, EKE terms impacting distribution. By combining four effective single-algorithm with no obvious bias, an ensemble habitat model created. ranges 117°E–119°E 22°N–24°N have highest annual distributions S.CPUE nominal CPUE.

Language: Английский

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Habitat changes and catch rate variability for greater amberjack in the Taiwan Strait: The effects of El Niño–southern oscillation events

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: March 17, 2023

El Niño–Southern Oscillation (ENSO) is a crucial oceanographic phenomenon that leads to interannual fluctuations in the climate and ecosystem productivity of tropical subtropical areas. These affect suitability habitats for many commercial fish species. However, detailed information on effects this major resulting environmental changes habitat catch rates economically ecologically species greater amberjack ( Seriola dumerili ) Taiwan Strait (TS) lacking. In study, we employed weighted index (HSI) modeling method used remotely sensed marine data as well from recorders Taiwanese fishing vessels (in 2014–2019) understand ENSO events TS. Analysis variance revealed factors substantially influenced during across seasons. The were high spring summer southern northern TS autumn winter higher spring, summer, (>9.0 kg/h) Niño years, winter, normal years (>12.0 lower La Niña years. predicted HSI populations predominantly distributed at 20–24°N 24–28°N, respectively. Opposite was synchronously found events, with values recorded Habitat extremely low autumn. findings imply play key role regulating conditions

Language: Английский

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Variability in the Spatiotemporal Distribution Patterns of Greater Amberjack in Response to Environmental Factors in the Taiwan Strait Using Remote Sensing Data

Remote Sensing, Journal Year: 2022, Volume and Issue: 14(12), P. 2932 - 2932

Published: June 19, 2022

The environmental characteristics of the Taiwan Strait (TS) have been linked to variations in abundance and distribution greater amberjack (Seriola dumerili) populations. Greater is a commercially ecologically valuable species ecosystems, its spatial patterns are pivotal fisheries management conservation. However, relationship between catch rates S. dumerili changes their impact on fish communities remains undetermined TS. goal this study was determine spatiotemporal pattern with TS from south north (20°N–29°N 115°E–127°E), applying generalized additive models (GAMs) data logbooks voyage recorders Taiwanese fishing vessels (2014–2017) as well satellite-derived remote sensing data. We used linear model (GLM) GAM analyze effect factors rates. predictive performance two statistical quantitatively assessed by using root mean square difference. Results reveal that outperforms GLM terms functional for generating reliable tool. selection process based significance terms, increase deviance explained, decrease residual factor, reduction Akaike’s information criterion. then developed best GAMs. explained indicated sea surface temperature, high rates, key factor influencing distributions, whereas mixed layer depth least relevant factor. predicted relatively rate northwestern region summer, area extending East China Sea. target strongly influenced biophysical conditions, potential areas located throughout waters findings showed how populations respond variables predict distributions. Data habitat preferences essential understanding conditions TS, which can inform future priorities conservation planning management.

Language: Английский

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Modelling the distribution of marine fishery resources: Where are we?

Fish and Fisheries, Journal Year: 2022, Volume and Issue: 24(1), P. 159 - 175

Published: Nov. 4, 2022

Abstract Ecological niche models (ENMs) and species distribution (SDMs) have been widely applied to various studies relevant biogeography, conservation biology, ecology. These modelling techniques seek develop spatial maps for projecting, among others past, current, future distributions. Born in the field of terrestrial ecology, only recent years these marine environmental issues, especially improve forecasting occurrences capturing fishery resources. This study aimed present through bibliometric analysis characteristics articles related use ENMs SDMs resources considering three main points: (1) state art: number over years, journals, countries, collaborations, focus research; (2) linked resources: biogeographic realms, taxonomic groups, life phases, oceanographic zones, behaviours; (3) methods: type method, biological and, data. We provide a list 378 (derived from 930 screened ones), results, discussion our findings, which represent baseline current status (strengths, limits, gaps) interface between ENMs/SDMs

Language: Английский

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Distribution Patterns of Grey Mullet in the Taiwan Strait in Relation to Oceanographic Conditions

Journal of Marine Science and Engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 648 - 648

Published: April 12, 2024

The depletion of the grey mullet population in Taiwan Strait has generated interest conservation initiatives and to enhance effectiveness restoration initiatives, it is essential comprehend specific habitat preferences species question, particularly relation environmental changes. In this study, suitability modelling was used investigate distribution patterns mullet. Sea surface height (SSH) most significant predictor standardized catch per unit effort (S.CPUE). Furthermore, sea temperature (SST) second important oceanographic parameter, followed by mixed-layer depth (MLD). S.CPUE peaked regions with summed SST, Chla, salinity, SSH, MLD current values being 20 °C, 0.9 mg/m3, 34.5 psu, 0.45 m, 18–38 0.25 m2/s2, respectively. From late October, HSI levels northern ocean increased, a consistent upward trend. expanded November December, focusing on mid-ocean west Taiwan. peak January February, especially Taiwan’s coastal region. High shifts away from coastlines diminishes April. findings study will contribute understanding approach may be applicable other fisheries stocks also.

Language: Английский

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Diurnal to Seasonal Variations in Ocean Chlorophyll and Ocean Currents in the North of Taiwan Observed by Geostationary Ocean Color Imager and Coastal Radar

Remote Sensing, Journal Year: 2020, Volume and Issue: 12(17), P. 2853 - 2853

Published: Sept. 2, 2020

The waters in the north of Taiwan are located at southern end East China Sea (ECS), adjacent to Strait (TS), and Kuroshio region. To understand physical dynamic process ocean currents temporal spatial distribution chlorophyll concentration Taiwan, hourly coastal dynamics applications radar (CODAR) flow field data geostationary color imager (GOCI) analyzed here. According from December 2014 May 2020, water TS flows along northern coast into region with a velocity 0.13 m/s spring summer through ECS. In winter, invades ECS shelf, where 0.08 m/s. seasonal variation northwestern is obvious, average November January exceeds 2.0 mg/m3, lowest 1.4 mg/m3. It apparent that tidal eastward westward during ebb flood periods, respectively. Affected by background currents, exhibits significant changes, namely, 0.43 0.27 winter period 0.26 0.45 period. near shore also significantly affected currents. Based on CODAR data, virtual drifter experiments, GOCI this research provides novel important knowledge current movement indicates diurnal variations concentration, facilitating future interaction between TS, ECS, Kuroshio.

Language: Английский

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Effect of soaking time on targets and bycatch species catch rates in fish and crab trap fishery in the southern East China Sea

Fisheries Research, Journal Year: 2022, Volume and Issue: 250, P. 106258 - 106258

Published: Feb. 9, 2022

Language: Английский

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Effect of the El Niño–Southern Oscillation (ENSO) Cycle on the Catches and Habitat Patterns of Three Swimming Crabs in the Taiwan Strait

Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 8

Published: Oct. 12, 2021

The swimming crabs is a crucial predator species in benthic habitats and high value commercial fishery industries subtropical tropical Asia. climate variability caused by El Niño–Southern Oscillation (ENSO) events has substantial impacts on the catch habitat of this species. In study, weighted suitability index (HSI) model was constructed using logbooks voyage data records from Taiwanese crab vessels (2013–2019) with addition environmental variables to examine influence ENSO rates (CRs) for Charybdis feriatus , Portunus pelagicus sanguinolentus Taiwan Strait (TS). autumn (September–October) major fishing season catching these three TS. A CR P. observed across TS, whereas CRs C. were recorded areas southern northern respectively, during autumn. Moreover, higher (>7.0 >8.0 kg/h) La Niña events, increase being more than 40.0% compared under normal Niño For both (>8.0 years. years co-occurred sea temperature low salinity, salinity. Furthermore, HSI but distributed widely lower highly consistent shrinkage suitable habitats. Our findings suggest that strongly affected

Language: Английский

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Unbaited Light-Emitting Diode Traps Performance for Catching Orange Mud Crabs

Journal of marine science and technology, Journal Year: 2022, Volume and Issue: 30(1)

Published: March 18, 2022

Mud crabs (Scylla spp.) are a vital fishery resource and targeted for valuable source of income coastal communities throughout the Indo-Pacific region. Baited traps considerable expense in crustacean fishing. Hence, present study was performed to investigate catchability Scylla olivacea response light-emitting diodes (LEDs) captivity field conditions. We used new experimental setup condition that revealed most S. were attracted green, blue, white LED lights no attractive effect by red similar controls. Field studies have shown catch per unit effort (CPUE) other organisms, including bycatch species, is significantly higher when conventional mackerel chicken head baits used. However, unbaited equipped with green produced low CPUE olivacea. Moreover, baited trap head, caught 4.52 %, 7.28 % 2.18% more compare empty trap, respectively. Besides, both treatments resulted average than did treatments; 0.66, 0.38 0.13 trap. No significant differences detected carapace width across all treatments. Our findings demonstrated mud can be captured using artificial lights, like aquatic species but further in-depth specific modifications improve performance warranted.

Language: Английский

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