Larval Development in Tropical Gar (Atractosteus tropicus) Is Dependent on the Embryonic Thermal Regime: Ecological Implications under a Climate Change Context

In ectotherm species, environmental temperature plays a key role in development, growth, and survival. Thus, determining how temperature affects fish populations is of utmost importance to accurately predict the risk of climate change over fisheries and aquaculture, critical to warrant nutrition and food security in the coming years. Here, the potential effects of abnormal thermal regimes (24, 28 and 32 °C; TR24, TR28, and TR32, respectively) exclusively applied during embryogenesis in tropical gar (Atractosteus tropicus) has been explored to decipher the potential consequences on hatching and growth from fertilization to 16 days post-fertilization (dpf), while effects on skeletal development and body morphology were explored at fertilization and 16 dpf. Egg incubation at higher temperatures induced an early hatching and mouth opening. A higher hatching rate was obtained in eggs incubated at 28 °C when compared to those at 24 °C. No differences were found in fish survival at 16 dpf, with values ranging from 84.89 to 88.86%, but increased wet body weight and standard length were found in larvae from TR24 and TR32 groups. Thermal regime during embryogenesis also altered the rate at which the skeletal development occurs. Larvae from the TR32 group showed an advanced skeletal development, with a higher development of cartilaginous structures at hatching but reduced at 16 dpf when compared with the TR24 and TR28 groups. Furthermore, this advanced skeletal development seemed to determine the fish body morphology. Based on biometric measures, a principal component analysis showed how along development, larvae from each thermal regime were clustered together, but with each population remaining clearly separated from each other. The current study shows how changes in temperature may induce craniofacial and morphological alterations in fish during early stages and contribute to understanding the possible effects of global warming in early development of fish and its ecological implications.

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A potential tipping point in the thermal regime of a warm monomictic reservoir under climate change using three-dimensional hydrodynamic modeling

Inland Waters ◽

10.1080/20442041.2021.1918510 ◽

2021 ◽

pp. 1-20

Author(s):

Behnam Zamani ◽

Manfred Koch ◽

Ben R. Hodges

Keyword(s):

Climate Change ◽

Thermal Regime ◽

Three Dimensional ◽

Hydrodynamic Modeling ◽

Tipping Point ◽

Warm Monomictic Reservoir

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Partial sequence characterization and ontogenetic expression of genes involved in lipid metabolism in the tropical gar ( Atractosteus tropicus )

Aquaculture Research ◽

10.1111/are.13879 ◽

2018 ◽

Vol 50 (1) ◽

pp. 162-172 ◽

Cited By ~ 2

Author(s):

Luis D. Jiménez‐Martínez ◽

Carlos A. Álvarez‐González ◽

Erick De la Cruz‐Hernández ◽

Dariel Tovar‐Ramírez ◽

Mario A. Galaviz ◽

...

Keyword(s):

Lipid Metabolism ◽

Partial Sequence ◽

Sequence Characterization ◽

Expression Of Genes ◽

Tropical Gar ◽

Atractosteus Tropicus

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The Archive: Digital Art and an Unsustainable Future

Brief Encounters ◽

10.24134/be.v2i1.103 ◽

2018 ◽

Vol 2 (1) ◽

Author(s):

Tallulah Harvey

Keyword(s):

Climate Change ◽

Short Story ◽

Digital Art ◽

Environmental Disaster ◽

Critical Research ◽

Sea Levels ◽

The Everyday ◽

Ecological Implications ◽

The Face ◽

Rising Sea Levels

This short story, “The Archive”, grew out of the eco-critical research I underwent during my postgraduate degree at Goldsmiths, University of London. In recent years, literary studies have become increasingly invested in environmentalism. The damaging consequences of human endeavour are now widely regarded within environmentalist and scientific communities, and by environmental literary theory or “ecocriticism”, as a shift from the Holocene (the geological epoch that provided the appropriate conditions for mammals to thrive), to the “Anthropocene” (the epoch in which human activity has become the dominant driving force of climatic change). The ecological implications of the Anthropocene prompt questions regarding human enterprise and responsibility; fuelling dystopian or apocalyptic end of the world narratives and anxieties towards technology, capitalism and post-humanism. This short piece explores the current problems facing climate change activists, namely the inconsistencies between the scientific community’s attitude towards ecological degradation and popular culture’s. Slajov Zizek suggests that public denial and the disassociation from environmental disaster is not caused by a lack of scientific knowledge, but because we as individuals fail to corroborate what we already know about climate change with our sensory experience of the everyday: ‘We know it, but we cannot make ourselves believe in what we know’. The Archive questions this pervasive delusion, one that denies climate change even in the face of dwindling resources, increasing natural disaster and rising sea levels. We as a society consume natural resources excessively, without any regard for the consequences. My work draws attention to the suicidal nature of this desire, and encourages its readers to take responsibility for their actions, for the sake of humanity’s survival.

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Partial characterization of digestive proteases in tropical gar Atractosteus tropicus juveniles

Fish Physiology and Biochemistry ◽

10.1007/s10695-013-9902-7 ◽

2013 ◽

Cited By ~ 4

Author(s):

R. Guerrero-Zárate ◽

C. A. Alvarez-González ◽

M. A. Olvera-Novoa ◽

N. Perales-García ◽

C. A. Frías-Quintana ◽

...

Keyword(s):

Partial Characterization ◽

Digestive Proteases ◽

Tropical Gar ◽

Atractosteus Tropicus

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The complete mitochondrial DNA of the tropical gar (Atractosteus tropicus)

Mitochondrial DNA ◽

10.3109/19401736.2014.905856 ◽

2014 ◽

Vol 27 (1) ◽

pp. 557-558 ◽

Cited By ~ 1

Author(s):

Miguel A. Del Río-Portilla ◽

Carmen E. Vargas-Peralta ◽

Fabiola Lafarga-De La Cruz ◽

Lenin Arias-Rodriguez ◽

Rigoberto Delgado-Vega ◽

...

Keyword(s):

Mitochondrial Dna ◽

Tropical Gar ◽

Atractosteus Tropicus

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Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica

Journal of Glaciology ◽

10.3189/2012jog11j148 ◽

2012 ◽

Vol 58 (212) ◽

pp. 1176-1190 ◽

Cited By ~ 32

Author(s):

Jonathan L. Carrivick ◽

Bethan J. Davies ◽

Neil F. Glasser ◽

Daniel Nývlt ◽

Michael J. Hambrey

Keyword(s):

Climate Change ◽

Sediment Transport ◽

Surface Structure ◽

Antarctic Peninsula ◽

Thermal Regime ◽

Late Holocene ◽

Negative Mass ◽

Warming Climate ◽

James Ross Island ◽

Geometric Changes

AbstractVirtually no information is available on the response of land-terminating Antarctic Peninsula glaciers to climate change on a centennial timescale. This paper analyses the topography, geomorphology and sedimentology of prominent moraines on James Ross Island, Antarctica, to determine geometric changes and to interpret glacier behaviour. The moraines are very likely due to a late-Holocene phase of advance and featured (1) shearing and thrusting within the snout, (2) shearing and deformation of basal sediment, (3) more supraglacial debris than at present and (4) short distances of sediment transport. Retreat of ~100 m and thinning of 15–20 m has produced a loss of 0.1 km3 of ice. The pattern of surface lowering is asymmetric. These geometrical changes are suggested most simply to be due to a net negative mass balance caused by a drier climate. Comparisons of the moraines with the current glaciological surface structure of the glaciers permits speculation of a transition from a polythermal to a cold-based thermal regime. Small land-terminating glaciers in the northern Antarctic Peninsula region could be cooling despite a warming climate.

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Environmental Education to Change the Consumption Model and Curb Climate Change

Sustainability ◽

10.3390/su12187475 ◽

2020 ◽

Vol 12 (18) ◽

pp. 7475

Author(s):

Leticia-Concepción Velasco-Martínez ◽

Juan-Jesús Martín-Jaime ◽

Ligia-Isabel Estrada-Vidal ◽

Juan-Carlos Tójar-Hurtado

Keyword(s):

Climate Change ◽

Environmental Education ◽

Compulsory Education ◽

Reliability And Validity ◽

Principal Component ◽

Education Students ◽

Responsible Consumption ◽

The Subject ◽

Consumption Model ◽

Mitigate Climate Change

Environmental education plays a fundamental role in the fight against climate change and the transformation towards a more sustainable and environmentally friendly socio-economic model. This study shows how to evaluate the effectiveness of a program for compulsory education students in Spain. The subject of the program focused on the effects of climate change in relation to our consumption model and the generation of waste. A mixed research methodology is proposed that combines a quantitative (10 items on the Likert scale, n = 714) and qualitative approach (category construction and analysis on open-ended questions). A study of the reliability and validity of the measure was carried out through a categorical principal component analysis (CATPCA). The multivariate analysis of variance (MANOVA) correlates the gender and educational level of the students to the learning acquired in the program. For example, the results show how students are convinced that adopting minimal pro-environmental habits (turning off lights and unplugging electronics, choosing public transport to get around, or using solar and wind power to produce electricity) can help mitigate climate change. The conclusions show the difficulties and challenges of education for responsible consumption, emphasizing the development of environmental education programs for reducing the effects of climate change.

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The Quantitative Evaluation on the Response of Climate Change upon the Sustainability of the Agricultural Production

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.129-131.1161 ◽

2010 ◽

Vol 129-131 ◽

pp. 1161-1165

Author(s):

Lin Chun Hou ◽

Hui Qin Li

Keyword(s):

Climate Change ◽

Principal Component Analysis ◽

Linear Regression ◽

Agricultural Production ◽

Agricultural Productivity ◽

Principal Component ◽

Environmental Condition ◽

Land Utilization ◽

Agricultural Society ◽

Per Capita

The aim: quantitatively evaluate the response of climate change upon the sustainability of the agricultural production. The method: the paper selected two regions (Hubei and shan’xi province) which represented different climate environment, utilized modern statistic data, Principal Component Analysis and multivariate linear regression to quantitatively evaluate the influence of climate change upon agricultural production through isolating climate environment from arable area, land utilization and management and landform and so on. The conclusion: The study indicated that when environmental condition turned good to agriculture, the function of environmental condition to agriculture relatively decreased; the capability of agricultural society and production decreased too, and people could select the land to cultivate, where agricultural productivity is higher. And that when environmental condition turned bad to agriculture, the function of environmental condition to agriculture relatively increased; the capability of agricultural society and production increased, too; people could not put emphasis on the land where agricultural productivity is higher, whereas focused on productivity per capita.

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