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77 results for “pike”
No signs of behavioral evolution of threespine stickleback following northern pike invasion
<p>Invasive predators often impose devastating selection pressures on native prey species. However, their effects can be regionally-dependent and influenced by local ecological conditions of their invaded habitats. Evolved behavioral phenotypes are important mechanisms by which prey adapt to the presence of novel predators. Here, we asked how behavior and behavioral plasticity of threespine stickleback (Gasterosteus aculeatus) populations have evolved following the introduction of the invasive predator, northern pike (Esox lucius). We examined the behavior of F1 offspring generated from three pike-free and three pike-invaded populations, and measured how stickleback activity and refuge use behaviors, and their plasticity, have evolved following pike introduction. To evaluate plasticity, we exposed juvenile stickleback to predator cues during their first year of development, and then evaluated how this repeated exposure influenced behavioral responses to an artificial predation event. We found no overarching effect of pike in either evolved behaviors or behavioral plasticity, and no evidence for the presence of developmental plasticity. Furthermore, we that depending on the phenotype, pike-invaded stickleback populations have either more, or less among-population variation than pike-free populations. Our results suggest that evolution in response to an invasive predator may be hidden by local adaptation when enough populations are studied.</p>
FIGURE 9 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 9. Bi-plots of body depth vs. SL with linear regressions of the 23 species of the Crenicichla saxatilis group, including C. ploegi, considering only adult specimens (> 69 cm SL). Species considered as deep-bodied taxa are shown in red; slender species are represented in green and blue.
FIGURE 8 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 8. Crenicichla ploegi, lower pharyngeal tooth plate in dorsal view, from ZUEC 10053, 146.1 mm SL. Posteromedial tooth, extracted during preparation of material, shown in lateral view.
FIGURE 7 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 7. Crenicichla aff. lepidota Tapajós a) LBP 8020, adult male, 92.4 mm SL, tributary of Rio Arinos in Nova Mutum, Rio Juruena basin; b) LBP 7952, adult female, 75.1 mm SL, Rio dos Patos, Rio Juruena basin; c) LBP 8020, subadult, 41.3 mm SL, tributary of Rio Arinos in Nova Mutum, Rio Juruena basin; d) LBP 8008, juvenile, 21.6 mm SL, tributary of Rio Arinos in Nova Mutum, Rio Juruena basin.
FIGURE 11 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 11. Distribution map of Crenicichla ploegi. Type locality as black star, collecting sites of paratypes as white circles.
FIGURE 10 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 10. Schematic drawings illustrating the correlation between general body shape and the position of the humeral blotch in relation to the anterior branch of lateral line: a) Crenicichla lepidota, lectotype NMW 33101, 157.8 mm SL—deepbodied species with humeral blotch below anterior branch of lateral line; b) Crenicichla ploegi, holotype MZUSP 93697, 89.8 mm SL—slender species with humeral blotch below anterior branch of lateral line; and c) Crenicichla alta, SU 78954, 115.4 mm SL—slender species with humeral blotch displaced dorsally, with its center on the anterior branch of lateral line.
FIGURE 6 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 6. Infraorbital series: a) Crenicichla ploegi, MZUSP 108380, 67.7 mm SL; b) Crenicichla macrophthalma, MZUSP 105713, 117.0 mm SL, c) Crenicichla saxatilis MZUSP 101130, 102.8 mm SL, d) Crenicichla missioneira, MCP 18926, 129.9 mm SL; e) Crenicichla jupiaensis, MZUSP 16048, 62.0 mm SL; f) Teleocichla preta, NRM 65527, 63.3 mm SL; g) Crenicichla chicha, MZUSP 93683, 70.2 mm SL.
FIGURE 5 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 5. Crenicichla ploegi, uncatalogued, 60.0 mm SL, from the Rio Juba above the waterfall of Cachoeira do Juba, tributary of the Rio Sepotuba basin, upper Rio Paraguai, Tangará da Serra, Mato Grosso, Brazil (field number SACIB2016100103). Photographed alive in aquarium just after capture by Fernando Dagosta.
FIGURE 4. Crenicichla ploegi, a in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 4. Crenicichla ploegi, a male (left) and a female (right) photographed alive in the Rio Verde, tributary of the Rio Papagaio, Mato Grosso, Brazil. Photo by Marcelo Krause.
FIGURE 3 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 3. Schematic drawing of dorsal view of the body in Crenicichla ploegi and Crenicichla aff. lepidota Tapajós, showing the dark markings in fishes with different sizes. a) Crenicichla ploegi, MCP 42680, 23.0 mm SL; b) Crenicichla ploegi, LBP 7540, 52.7 mm SL; c) Crenicichla ploegi, ZUEC 10053, 143.3 mm SL; d) Crenicichla aff. lepidota Tapajós, LBP 8008, juvenile, 21.6 mm SL; e) Crenicichla aff. lepidota Tapajós, LBP 8020, 92.4 mm SL.
FIGURE 2 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 2. Crenicichla ploegi: a) MZUSP 78884, paratype, 127.2 mm SL, Rio Juba, upper Rio Paraguai basin; b) LBP 7540, paratype, 85.1 mm SL; c) LBP 7540, paratype, 66.0 mm SL; and d) LBP 7540, 52.7 mm SL, Campo Novo dos Parecis, upper Rio Paraguai basin.
FIGURE 1 in Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae)
FIGURE 1. Crenicichla ploegi: a) ZUEC 10053, paratype, adult male, 143.3 mm SL, Rio Claro, Rio Juruena basin; b) MZUSP 93697, holotype, adult male, 89.8 mm SL, Rio Papagaio, Rio Juruena basin; c) MCP 39528, adult female, 69.4 mm SL, Brazil, Rio Sauê-Uiná, Rio Juruena basin; d) MCP 42680, juvenile, 23.0 mm SL, Rio Verde, Rio Juruena basin.
Data for: Higher abundance of adult pike in Baltic Sea coastal areas adjacent to restored wetlands compared to reference bays
<p><span>The abundance of pike, a keystone top-predator, has declined dramatically in the Baltic Sea since the 1990s likely owing to recruitment failure. It has been proposed that wetland restoration can aid the recovery of the pike stock by increasing the number of recruits produced by anadromous populations. Yet, no previous studies have addressed whether wetland restorations are associated with higher abundances of adult pike in the coastal habitat. To address this, we performed standardised rod-and-reel survey fishing in paired bays with and without wetlands across three coastal areas and three years. To estimate dispersal and the contribution of wetland pike to the coastal stock, we tagged captured pike with passive integrated responders (PIT) and employed PIT-reader stations in wetland inlets. The results showed that pike abundances were on average 90% higher in bays with an adjacent wetland although the effect varied among areas. Moreover, PIT-data uncovered that wetland pike constituted a high proportion of the pike found in adjacent coastal habitats and that some wetland fish dispersed up to 10 km. These results support that wetland restoration is a valuable tool to aid the coastal pike stock and ultimately restore the function and services of the coastal ecosystem.</span></p>
Effects of Assisted Sit-up Exercise vs Swiss Ball Pikes on Postpartum Low Back Pain.
ClinicalTrials.gov study NCT05355246. IPD Sharing: NO. Countries: 1. Publications: 8.
Rapid parallel morphological and mechanical diversification of South American Pike Cichlids (Crenicichla)
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Data from: Potential of environmental DNA to evaluate Northern pike (Esox lucius) eradication efforts: an experimental test and case study
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Data from: Adaptations of early development to local spawning temperature in anadromous populations of pike (Esox lucius)
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Data from: Comparing the performance of microsatellites and RADseq in population genetic studies: analysis of data for pike (Esox lucius) and a synthesis of previous studies
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Data from: Causes and consequences of repeatability, flexibility and individual fine-tuning of migratory timing in pike
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Data for: Higher abundance of adult pike in Baltic Sea coastal areas adjacent to restored wetlands compared to reference bays
Open the record for dataset details and reuse information.
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