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435 results for “aquatic beetles”
Data from: Causes of discordance between allometries at and above species-level: an example with aquatic beetles
Covariation among organismal traits is nearly universal, occurring both within and among species (static and evolutionary allometry, respectively). If conserved developmental processes produce similarity in static and evolutionary allometry, then when species differ in development, it should be expressed in discordance between allometries. Here, we investigate whether rapidly evolving developmental processes result in discordant static and evolutionary allometries attributable to trade-offs in resource acquisition, allocation, or growth across 30 species of aquatic beetles. The highly divergent sperm phenotypes of these beetles might be an important contributor to allometric evolution of testis and accessory gland mass through altered requirements for the production of sperm and seminal fluids. We documented extensive discordance between static and evolutionary allometries, indicating that allometric relationships are flexibly modified over short time periods but subject to constraint over longer time spans. Among species, sperm phenotype did not influence relative investment in accessory glands but was weakly associated with investment in testes. Furthermore, except when sperm were long and simple, sperm phenotype was not associated with species-specific modification of the allometry of testis/accessory gland mass and body size. Our results demonstrate the utility of allometric discordance to infer species differences in the provisioning and growth of concurrently developing traits.
Fig. 1 in Altitudinal Distribution of Aquatic Beetles (Coleoptera) in Northern Tunisia: Relationship between Species Richness and Altitude
Fig. 1. Map of northern Tunisia showing the different sampling sites.
Fig. 2 in Aquatic Beetles in the Ravenna Training and Logistics Site of Northeastern Ohio
Fig. 2. Species – area plot for RTLS site. Numbers next to points refer to the watershed
Fig. 1 in Aquatic Beetles in the Ravenna Training and Logistics Site of Northeastern Ohio
Fig. 1. Map of RTLS showing facility boundary, major roads, the four named creeks,
FIGURE 38 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 38. Dorsal habitus of representative species of Nearctic Hydraenidae.
FIGURE 32 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 32. Hydraena (Hydraenopsis) lenticula, new species, holotype habitus and aedeagus.
FIGURE 31 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 31. Hydraena (Hydraenopsis) comicala, new species, holotype habitus and aedeagus.
FIGURE 29 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 29. Hydraena (Hydraenopsis) saintvincentensis, new species, holotype habitus and aedeagus.
FIGURE 28 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 28. Hydraena (Hydraenopsis) pantitillata, new species, holotype habitus and aedeagus.
FIGURE 23 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 23. Ochthebius (Asiobates) shepardi, new species, holotype habitus and aedeagus.
FIGURE 21 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 21. Ochthebius (Asiobates) convexus, new species, holotype habitus and aedeagus.
FIGURE 20 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 20. Hydraena (Spanglerina) ingens (Perkins), habitus and aedeagus.
FIGURE 37 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 37. Dorsal habitus of representative species of Nearctic Hydraenidae.
FIGURE 19 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 19. Hydraena (Spanglerina) frondsicola (Perkins), habitus and aedeagus.
FIGURE 30 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 30. Hydraena (Holcohydraena) chandleri, new species, holotype habitus and aedeagus.
FIGURE 22 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 22. Ochthebius (Asiobates) invictus, new species, holotype habitus and aedeagus.
FIGURE 18 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 18. Hydraena (Spanglerina) brevis Sharp, habitus and aedeagus.
FIGURE 17 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 17. Hydraena (Spanglerina) arcei new species, holotype habitus and aedeagus.
FIGURE 16 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 16. Hydraena (Hydraenopsis) temascaltepecica new species, holotype habitus and aedeagus.
FIGURE 15 in New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae)
FIGURE 15. Hydraena (Hydraenopsis) spiralis new species, holotype habitus and aedeagus.
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