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26 results for “intertidal ecology”
Data from: Ecological effects of habitat complexity vary with intertidal elevation: Implications for seawall eco-engineering
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Data from: Ecological relevance of energy metabolism: transcriptional responses in energy sensing and expenditure to thermal and osmotic stresses in an intertidal limpet
For rocky intertidal species that experience changes in a number of potential stressors seasonally and during the tidal cycle, sensing cellular energy status and modulating it adaptively may be crucial for responding to stressor effects. However, the responses of energy metabolism of intertidal species to multiple sublethal stressors are still unclear. Here, we examined gene expression profiles of biomarkers related to sensing of cellular energy status and regulation of catabolism and energy expenditure in a mid-intertidal limpet Cellana toreuma for elucidating the species' cellular energy responses stresses from high temperature, desiccation and rainfall. Expression levels of genes encoding metabolic regulators [two subunits of AMP-activated protein kinase, ampkα, ampkβ; Fu gene inhibition axis formation, axin; two sirtuins, NAD-dependent deacetylase sirtuin-1 (sirt1); NAD-dependent deacetylase sirtuin-5 (sirt5)], metabolic enzymes (hexokinase, hk; pyruvate kinase, pk; isocitrate dehydrogenase, idh) and heat shock protein 70 (hsp70) were quantified in specimens exposed to different temperatures and aerial/freshwater spray conditions. Based on the gene expression patterns, all individuals could be divided into three groups with divergent cellular energy status, indicating that the selected target genes are appropriate indicators of cellular metabolism. The divergent gene expression patterns indicated a sequence in which individuals from group 1, group 2 and group 3 were faced with increasing energy stress. The frequency distributions of individuals in the three groups were different among different time points and treatments, indicating that high temperature, desiccation, and rainfall, singly or in combination, could cause energy stress. Compared to the high percentage (100%) of individuals placed in the highest-stress group (group 3), after 2 h of freshwater spray at 18 °C, the lower percentage (77·8%) of individuals in group 3 after 2 h of freshwater spray at 30 °C indicated the existence of interactive effects of high temperature and rain; high temperature resulted in a lower response of cellular energy metabolism to rainfall. Sublethal environmental stresses from single stressors such as temperature or osmotic challenges can lead to cellular energy stress. Interactions among stressors may lead to a complex overall effect on cellular energy status in intertidal species.
FIGURE 18 in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 18. Graphic comparison of all Fortuynia species, subspecies and morphs from different geographic areas. Depictions are taken from literature and were slightly modified except for the new species described in this paper. A) F. arabica (Bayartogtokh et al. 2009). B) sexually dimorphic F. atlantica (Krisper & Schuster 2008). C) F. marina (Hammen 1960). D) F. longiseta sp. nov. E) F. maledivensis sp. nov. F) F. yunkeri (Hammen 1963). G) F. inhambanensis (Marshall & Pugh 2002). H) F. elamellata (Luxton 1967). I) F. elamellata micromorpha (Marshall & Pugh 2002). J) F. elamellata shibai (Aoki 1974). K) F. taiwanica (Bayartogtokh et al. 2009). L) F. sinensis (Luxton 1992). M) F. rotunda from Mozambique (Marshall & Pugh 2002). N) F. rotunda morph from Japan (Karasawa & Aoki 2005). O) F. maculata (Luxton 1986). P) F. smiti from New Caledonia (Ermilov et al. 2013). Q) F. smiti morph from Singapore.
FIGURE 17. F. smiti protonymph left legs, antiaxial view. A in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 17. F. smiti protonymph left legs, antiaxial view. A) leg I. B) leg II. C) leg III. D) leg IV.
FIGURE 5. F in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 5. F. maledivensis sp. nov. protonymph left legs, antiaxial view. A) leg I. B) leg II. C) leg III. D) leg IV.
FIGURE 12. A in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 12. A. pseudoreticulatus sp. nov. adult left legs, antiaxial view. A) leg I. B) leg II. C) leg III. D) leg IV.
FIGURE 9. F in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 9. F. longiseta sp. nov. A) larva, dorsal view. B) larva, ventral view. C) protonymph, dorsal view. D) protonymph, ventral view.
FIGURE 3. F in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 3. F. maledivensis sp. nov. adult left legs antiaxial view. A) leg I. B) leg II. C) leg III. D) leg IV.
FIGURE 8. F in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 8. F. longiseta sp. nov. adult left legs, antiaxial view. Dorsal porose areas on femur III and IV omitted due to slightly ventral perspective. A) leg I. B) leg II. C) leg III. D) leg IV.
FIGURE 11 in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 11. Alismobates pseudoreticulatus sp. nov. adult. A) dorsal view. B) ventral view. C) lateral view.
FIGURE 6. F in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 6. F. maledivensis sp. nov. A) deutonymph, dorsal view. B) deutonymph, ventral view. C) tritonymph, dorsal view. D) tritonymph, ventral view.
FIGURE 1 in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 1. Fortuynia maledivensis sp. nov. adult. A) right pedipalp, paraxial view. B) right rutellum, ventral view.
FIGURE 10. F in The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography
FIGURE 10. F. longiseta sp. nov. A) deutonymph, dorsal view. B) deutonymph, ventral view. C) tritonymph, dorsal view. D) tritonymph, ventral view.
Raw coordinates and measurements from: Like parent, like child -Ontogenetic development of claws of intertidal arthropods (Acari, Oribatida) from different ecological niches
<p>The shape of claws of adult air-breathing intertidal oribatid mites shows a strong correlation with ecology. As nothing is known about juvenile characteristics of this trait, the ontogenetic development of these attachment devices was studied for the first time with comprehensive geometric morphometric methods. In nine investigated species, claws of immature stages can be classified into the same ecological categories as adults, i.e. juveniles of several rock-dwelling species already show higher and stronger curved claw shapes with smaller claw angles, while juvenile instars of the single investigated mangrovedwelling species possess lower and less curved claws with wider claw angles. For each species, claw curvature is almost static during the complete development and claw length grows directly proportional with increasing body size. Developmental changes in body size and weight are thus mainly compensated by a simple relative growth in size. Despite the finding that claw shapes of early developmental stages are already classifiable into ecological categories, their shapes also change slightly during development to become more 'rock', 'mix' or 'mangrove'-like, respectively. The present results demonstrate that ecology is also the most important factor in shaping the claws of immatures and that attachment in the intertidal environment is vital for the survival of each mobile stage.</p>
Disentangling drivers of mudflat intertidal DOM chemodiversity using ecological models
<p><span><span>Microorganisms consume and transform dissolved organic matter (DOM) into various forms.</span></span><span><span> </span><span>However, it remains unclear whether the ecological patterns and drivers of DOM chemodiversity are analogous to those of microbial communities. </span></span><span>Here, a large-scale investigation was conducted along the Chinese coasts to resolve </span><span>the intrinsic linkages among the complex intertidal DOM pools, microbial communities and environmental heterogeneity</span><span>. The abundance of DOM molecular formulae best fitted log-normal distribution and followed Taylor’s Law. </span><span>Distance-decay relationships were observed for labile molecular formulae, while latitudinal diversity gradients were noted for recalcitrant molecular formulae.</span><span> </span><span>Latitudinal patterns were also observed for DOM molecular features. </span><span>Negative cohesion, bacterial diversity, and molecular traits were the main drivers of DOM chemodiversity. Stochasticity analyses demonstrated that determinism dominantly shaped the DOM compositional variations. This study unveils the intrinsic mechanisms underlying the intertidal DOM chemodiversity and microbial communities from ecological perspectives, deepening our understanding of microbially driven chemical ecology.</span></p>
El Niño and marine heatwaves: Ecological impacts on Oregon rocky intertidal kelp communities at local to regional scales
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Raw coordinates and measurements from: Like parent, like child -Ontogenetic development of claws of intertidal arthropods (Acari, Oribatida) from different ecological niches
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Testing for phylogenetic signal in claws suggests great influence of ecology on Caribbean intertidal arthropods (Acari, Oribatida)
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Data from: Ecological relevance of energy metabolism: transcriptional responses in energy sensing and expenditure to thermal and osmotic stresses in an intertidal limpet
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Data from: Historical and recent processes shaping the geographic range of a rocky intertidal gastropod: phylogeography, ecology, and habitat availability
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