Sensory organ development in cultured striped trumpeter larvae Latris lineata: implications for feeding behaviour

2003 ◽  
Vol 54 (5) ◽  
pp. 669 ◽  
Author(s):  
J. M. Cobcroft ◽  
P. M. Pankhurst
Keyword(s):  
Visual Field ◽  
Inner Ear ◽  
Early Stage ◽  
Larval Growth ◽  
Dark Phase ◽  
Sensory Organs ◽  
Growth And Survival ◽  
Live Feed ◽  
Latris Lineata ◽  
Striped Trumpeter

Teleost larvae are reliant on sensory organs for feeding, in particular for the detection and subsequent capture of prey. The present study describes the development of sensory organs in cultured striped trumpeter larvae, Latris lineata. In addition, a short-term feeding trial was conducted to examine the feeding response of larvae with different senses available; streptomycin sulfate was used to ablate the superficial neuromasts, and testing larvae in the dark prevented visually mediated feeding. Some non-visual senses are available to striped trumpeter larvae from an early age, as indicated by the presence of superficial neuromasts at hatching, and innervated olfactory organs and a developed inner ear from Day 3 post hatching. The neuromasts proliferated on the head and body with increasing larval age, and formation of the lateral line canal had commenced by Day 26 post hatching. Oral taste buds were not present in any of the larvae examined, up to Day 26 post hatching. At hatching, the retina was at an early stage in development, but differentiated rapidly and was presumed functional coincident with the onset of feeding on Day 7 post hatching. The ventro-temporal retina was the last to differentiate, and was distorted by the embryonic fissure, such that larval vision in the forward and upward visual field would be compromised. In contrast, the dorso-temporal retina was the first area to differentiate, and presumptive rod and double-cone development occurred in this area from Days 11 and 16, respectively, indicating that the forward and downward directed visual field is most suited for acute image formation. Larvae on Day 18 post hatching demonstrated increased feeding with an increase in the senses available, with 8 ± 3% of streptomycin-treated larvae feeding in the dark (chemoreception and inner ear mechanoreception only) and 27 ± 5% of untreated larvae feeding in the light (all senses available). It remains to be demonstrated whether there is an advantage to larval growth and survival by providing live feed during the dark phase in culture, facilitating feeding 24 hours per day.

Copepods as A Live Feed for Striped Trumpeter Latris Lineata Larvae

2007 ◽  
pp. 195-208 ◽  
Author(s):  
David T. Morehead ◽  
Stephen C. Battaglene ◽  
Ephrime B. Metillo ◽  
Matthew P. Bransden ◽  
Graeme A. Dunstan
Keyword(s):  
Live Feed ◽  
Latris Lineata ◽  
Striped Trumpeter

scholarly journals PLANKTON DISTRIBUTION IN CONTROLLED WATER OF MILKFISH LARVA CULTURE SYSTEM

2019 ◽  
Vol 18 (3) ◽  
Author(s):  
Afifah Nasukha ◽  
Titiek Aslianti
Keyword(s):  
Larval Growth ◽  
Culture Period ◽  
High Survival ◽  
Larval Food ◽  
Growth And Survival ◽  
Live Feed ◽  
Herbivorous Species ◽  
Main Food Source ◽  
Plankton Diversity ◽  
Plankton Distribution

The selection of planktons as live feed for milkfish larvae is a vital tool to meet the natural character as herbivorous species and to fulfill the needs for nutritious food for fish larval growth and survival. Phytoplankton Nannochloropsis sp. and zooplankton rotifer (Brachionus sp.) were two-selected plankton used as the main food source for the milkfish larvae. We performed this study in two times larval culture batch with four observations of tanks as replication. The results showed that we nourished both targeted planktons as larval food, regarding the positive impacts on larval growth (12±1,37 mm of total length, 7±4.89 mg of body weight) and a high survival rate (65.93–77.70%) achieved at the end of the culture period. Plankton diversity analysis presented that Class of rotifer (Monogononta) and Nannochloropsis sp. (Eustigmatophyceae) were both counted as the most dominant plankton group found in the rearing media, showing a decent sign of food supply for fish in rearing water column. The total number of planktons was high and had the tendency to follow the concentration of selected planktons over the culture period in the controlled water.  

scholarly journals You Better Repeat It: Complex CO2 × Temperature Effects in Atlantic Silverside Offspring Revealed by Serial Experimentation

Diversity ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 69 ◽  
Author(s):  
Christopher Murray ◽  
Hannes Baumann
Keyword(s):  
Early Life ◽  
Larval Growth ◽  
Menidia Menidia ◽  
Embryo Survival ◽  
Single Experiment ◽  
Growth And Survival ◽  
Atlantic Silverside ◽  
Co2 Effects ◽  
Experimental Approaches ◽  
Temperature Interactions

Concurrent ocean warming and acidification demand experimental approaches that assess biological sensitivities to combined effects of these potential stressors. Here, we summarize five CO2 × temperature experiments on wild Atlantic silverside, Menidia menidia, offspring that were reared under factorial combinations of CO2 (nominal: 400, 2200, 4000, and 6000 µatm) and temperature (17, 20, 24, and 28 °C) to quantify the temperature-dependence of CO2 effects in early life growth and survival. Across experiments and temperature treatments, we found few significant CO2 effects on response traits. Survival effects were limited to a single experiment, where elevated CO2 exposure reduced embryo survival at 17 and 24 °C. Hatch length displayed CO2 × temperature interactions due largely to reduced hatch size at 24 °C in one experiment but increased length at 28 °C in another. We found no overall influence of CO2 on larval growth or survival to 9, 10, 15 and 13–22 days post-hatch, at 28, 24, 20, and 17 °C, respectively. Importantly, exposure to cooler (17 °C) and warmer (28 °C) than optimal rearing temperatures (24 °C) in this species did not appear to increase CO2 sensitivity. Repeated experimentation documented substantial inter- and intra-experiment variability, highlighting the need for experimental replication to more robustly constrain inherently variable responses. Taken together, these results demonstrate that the early life stages of this ecologically important forage fish appear largely tolerate to even extreme levels of CO2 across a broad thermal regime.

Performance and skeletal abnormality of striped trumpeter Latris lineata larvae and post larvae fed vitamin A enriched Artemia

Aquaculture ◽  
2014 ◽  
Vol 422-423 ◽  
pp. 115-123 ◽  
Author(s):  
Reham K. Negm ◽  
Jennifer M. Cobcroft ◽  
Malcolm R. Brown ◽  
Barbara F. Nowak ◽  
Stephen C. Battaglene
Keyword(s):  
Vitamin A ◽  
Skeletal Abnormality ◽  
Latris Lineata ◽  
Striped Trumpeter

Effect of dietary 22:6n-3 on growth, survival and tissue fatty acid profile of striped trumpeter (Latris lineata) larvae fed enriched Artemia

Aquaculture ◽  
2005 ◽  
Vol 243 (1-4) ◽  
pp. 331-344 ◽  
Author(s):  
M.P. Bransden ◽  
S.C. Battaglene ◽  
D.T. Morehead ◽  
G.A. Dunstan ◽  
P.D. Nichols
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Tissue Fatty Acid ◽  
Latris Lineata ◽  
Striped Trumpeter

scholarly journals Circulating Heat Shock Protein 70 Is a Novel Biomarker for Early Diagnosis of Lung Cancer

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Tielong Tang ◽  
Chao Yang ◽  
Ham Ebo Brown ◽  
Jing Huang
Keyword(s):  
Lung Cancer ◽  
Heat Shock ◽  
Heat Shock Protein ◽  
Cancer Patients ◽  
Heat Shock Protein 70 ◽  
Early Stage ◽  
Growth And Survival ◽  
Lung Cancer Patients ◽  
Cellular Stresses ◽  
Sensitivity Specificity

Heat shock protein 70 (HSP70) was a highly conserved protein which was significantly induced in response to cellular stresses. HSP70 played an important role in the pathogenesis of cancer which stabilized the production of large amount of oncogenic proteins and finally supported growth and survival of tumor. However, there was no report about the diagnosis of circulating HSP70 in lung cancer patients. In this study, a total of 297 participants (lung cancer: 197, healthy control: 100) were enrolled in the detection of circulating HSP70 level in plasma by ELISA assay. The results indicated that circulating HSP70 significantly decreased in lung cancer patients compared to healthy controls (P<0.0001). Receiver operating characteristic (ROC) analysis showed that HSP70 (AUC: 82.2%, SN: 74.1%, SP: 80.0%) had higher diagnosis value than clinical existing biomarkers CEA (AUC: 80.1%, SN: 76.8%, SP: 67.3%) and CA 19-9 (AUC: 63.7%, SN: 64.2%, SP: 54.0%). In the analysis of early lung cancer patients, ROC results also revealed that HSP70 (AUC: 83.8%, SN: 71.2%, SP: 84.0%) have higher sensitivity, specificity, and AUC than CEA (AUC: 73.7%, SN: 73.2%, SP: 69.1%) and CA 19-9 (AUC: 61.5%, SN: 69.4%, SP: 53.4%). In analysis of specific histological classifications, HSP70 showed more valuable in the diagnosis of SCC (AUC: 85.9%, SN: 86.1.9%, SP: 81.0%) than ADC (AUC: 81.0%, SN: 69.1%, SP: 81.0%). Combined analysis of HSP70 and existing biomarker: CEA and CA 19-9 exhibited that HSP70 combined CEA and CA 19-9 showed the highest AUC (0.945, 95% CI, 0.855–1.000). The importance of our results was that we found decreased circulating HSP70, in combination with elevated CEA and CA 19-9, could be utilized in the diagnosis of early (stage I and II) lung cancer.

Axial specification for sensory organs versus non-sensory structures of the chicken inner ear

Development ◽  
1998 ◽  
Vol 125 (1) ◽  
pp. 11-20 ◽  
Author(s):  
D.K. Wu ◽  
F.D. Nunes ◽  
D. Choo
Keyword(s):  
Gene Expression ◽  
Inner Ear ◽  
Expression Patterns ◽  
Growth Factor Receptor ◽  
Gross Anatomy ◽  
Sensory Organ ◽  
Sensory Organs ◽  
Organ Formation ◽  
Sensory Structures ◽  
Axial Specification

A mature inner ear is a complex labyrinth containing multiple sensory organs and nonsensory structures in a fixed configuration. Any perturbation in the structure of the labyrinth will undoubtedly lead to functional deficits. Therefore, it is important to understand molecularly how and when the position of each inner ear component is determined during development. To address this issue, each axis of the otocyst (embryonic day 2.5, E2.5, stage 16–17) was changed systematically at an age when axial information of the inner ear is predicted to be fixed based on gene expression patterns. Transplanted inner ears were analyzed at E4.5 for gene expression of BMP4 (bone morphogenetic protein), SOHo-1 (sensory organ homeobox-1), Otx1 (cognate of Drosophila orthodenticle gene), p75NGFR (nerve growth factor receptor) and Msx1 (muscle segment homeobox), or at E9 for their gross anatomy and sensory organ formation. Our results showed that axial specification in the chick inner ear occurs later than expected and patterning of sensory organs in the inner ear was first specified along the anterior/posterior (A/P) axis, followed by the dorsal/ventral (D/V) axis. Whereas the A/P axis of the sensory organs was fixed at the time of transplantation, the A/P axis for most non-sensory structures was not and was able to be re-specified according to the new axial information from the host. The D/V axis for the inner ear was not fixed at the time of transplantation. The asynchronous specification of the A/P and D/V axes of the chick inner ear suggests that sensory organ formation is a multi-step phenomenon, rather than a single inductive event.

Expression pattern of the FGF-related proto-oncogene int-2 suggests multiple roles in fetal development

Development ◽  
1989 ◽  
Vol 105 (1) ◽  
pp. 131-136 ◽  
Author(s):  
D.G. Wilkinson ◽  
S. Bhatt ◽  
A.P. McMahon
Keyword(s):  
Inner Ear ◽  
Expression Pattern ◽  
Purkinje Cells ◽  
Fetal Development ◽  
Early Stage ◽  
Multiple Roles ◽  
High Level Expression ◽  
Dynamic Pattern ◽  
Mouse Embryogenesis ◽  
High Level

The FGF-related proto-oncogene int-2 is implicated in mouse embryogenesis, since it is expressed in specific tissues during gastrulation and neurulation (Wilkinson et. al. 1988). Here, we describe the expression of this gene during subsequent fetal development, int-2 transcripts are restricted to Purkinje cells in the cerebellum and to regions of the developing retina containing early-stage differentiating cells. This high level expression is not detected in the mature cerebellum or retina. In addition, int-2 RNA is detected in the mesenchyme of the developing teeth and in sensory regions of the inner ear. This complex and dynamic pattern suggests multiple roles of this proto-oncogene during fetal development of the mouse.

scholarly journals Shaping of inner ear sensory organs through antagonistic interactions between Notch signalling and Lmx1a

eLife ◽  
2017 ◽  
Vol 6 ◽  
Author(s):  
Zoe F Mann ◽  
Héctor Gálvez ◽  
David Pedreno ◽  
Ziqi Chen ◽  
Elena Chrysostomou ◽  
...  
Keyword(s):  
Inner Ear ◽  
Notch Signalling ◽  
Sensory Organ ◽  
Sensory Organs ◽  
Functional Diversification ◽  
Dynamic Nature ◽  
Embryonic Chicken ◽  
Mechanisms Of Formation ◽  
Sensory Patch ◽  
Antagonistic Interactions

The mechanisms of formation of the distinct sensory organs of the inner ear and the non-sensory domains that separate them are still unclear. Here, we show that several sensory patches arise by progressive segregation from a common prosensory domain in the embryonic chicken and mouse otocyst. This process is regulated by mutually antagonistic signals: Notch signalling and Lmx1a. Notch-mediated lateral induction promotes prosensory fate. Some of the early Notch-active cells, however, are normally diverted from this fate and increasing lateral induction produces misshapen or fused sensory organs in the chick. Conversely Lmx1a (or cLmx1b in the chick) allows sensory organ segregation by antagonizing lateral induction and promoting commitment to the non-sensory fate. Our findings highlight the dynamic nature of sensory patch formation and the labile character of the sensory-competent progenitors, which could have facilitated the emergence of new inner ear organs and their functional diversification in the course of evolution.

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