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Spiniferaphonte, a new genus of Laophontidae (Copepoda: Harpacticoida), with notes on the occurrence of processes on the caudal rami
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A new genus and species of Laophontidae, Spiniferaphonte ornata n. gen., n. sp., is described from the coast of Kenya. The new genus is closely related to Laophontina and Wellsiphontina as shown by the following synapomorphies: a denticulate operculum, a sexually dimorphic P4 exopod (reduced chaetotaxy of the ultimate segment in the male), and the absence of sexual dimorphism in the P2 and P3 endopods. The two-segmented exopod of P1 and the presence of a seta on the endopodal part of the male P5 are plesiomorphies indicating that the new genus represents a separate lineage within this group. The proposal of the new genus Spiniferaphonte is supported by the following autapomorphies: three smooth setae on the female P5 exopod and a robust, dorsally bent, and strongly sclerotised caudal seta V. Within the Laophontidae, it is striking that the presence of distinct, thorn-like processes on the caudal rami is limited to interstitial genera. Distinct processes on the proximal segments of the antennule and a proximally thickened caudal seta V also appear to be associated with this interstitiality. These structures may play a role in the movement and the anchoring of the animals in their interstitial habitat.
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RBINS Staff Publications
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Spinnen en loopkevers ingezameld tijdens een korte bodemvalbemonstering te Doeveren (Zedelgem‐Oostkamp)
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Spiders and carabid beetles were collected with pitfall traps during a short sampling campaign in the spring of 2017 (from 24/05 to 11/07) in the nature reserve Doeveren at Zedelgem‐Oostkamp. 49 species of spiders and 34 species of carabid beetles were found. We here discuss some particular species of both arthropod groups that are mentioned as threatened on the Red list for Flanders. We comment the management and heathland restoration measures of the last years and its impact on both faunas
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RBINS Staff Publications 2019
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Spiraaltjes op het strand en onderste boven in de oceaan: de Posthoorninktvis Spirula spirula weet iedereen te verbazen
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RBINS Staff Publications 2020
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Spiroplasma Display an Intricate Continuum of Infection Heterogeneity and Persistence in Myrmica Ants
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Many bacterial taxa evolved facultative symbiotic associations with insects and spread through host populations by horizontal and maternal transmission. Co-infection at the individual host level may facilitate or constrain the spread of facultative symbi- onts. Due to insufficiently detailed genotyping, co-infections of maternally transmitted symbionts often remain hidden, limit- ing our understanding of (co-)infection dynamics. Spiroplasma bacteria exhibit multiple independent origins of symbiosis with insects and have poorly understood patterns of transmission and co-infection. Here, we examined these traits of Spiroplasma symbiosis using Myrmica ants, a system known for high frequencies of single Spiroplasma infections. Through exhaustive genotyping of 75 colonies across seven Myrmica species, we uncovered multiple cryptic co-infections involving two distinct Spiroplasma clades that display significantly different infection frequencies in workers. Within Myrmica ruginodis, infection heterogeneity was contingent on ant caste and was lower in workers. Remarkably, the sMyr Spiroplasma variant infected four Myrmica species and was widespread in queens and workers. We provide phylogenomic and functional genomic support for an exceptionally stable symbiosis with maternally acquired sMyr, with a predicted infection persistence of seven million years in the Myrmica scabrinodis species group. Our findings reveal that Spiroplasma can display complex infection heterogeneity and evolve an evolutionary stable maternally acquired infection within insect hosts.
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RBINS Staff Publications 2026 OA
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Spy 2, second exemple néanderthalien d'usure en cure-dent a minima.
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RBINS Staff Publications
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Spy1 et Spy 2
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RBINS Staff Publications
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Stable isotope and biotic evolution in the North Sea during the early Eocene : the Albaek Hoved section, Denmark.
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RBINS Staff Publications
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Stable isotopes reveal patterns of diet and mobility in the last Neandertals and first modern humans in Europe
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Correlating cultural, technological and ecological aspects of both Upper Pleistocene modern humans (UPMHs) and Neandertals provides a useful approach for achieving robust predictions about what makes us human. Here we present ecological information for a period of special relevance in human evolution, the time of replacement of Neandertals by modern humans during the Late Pleistocene in Europe. Using the stable isotopic approach, we shed light on aspects of diet and mobility of the late Neandertals and UPMHs from the cave sites of the Troisième caverne of Goyet and Spy in Belgium. We demonstrate that their diet was essentially similar, relying on the same terrestrial herbivores, whereas mobility strategies indicate considerable differences between Neandertal groups, as well as in comparison to UPMHs. Our results indicate that UPMHs exploited their environment to a greater extent than Neandertals and support the hypothesis that UPMHs had a substantial impact not only on the population dynamics of large mammals but also on the whole structure of the ecosystem since their initial arrival in Europe.
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RBINS Staff Publications 2019
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Stable isotopes.
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RBINS Staff Publications
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Starvation and Cannibalism on Easter Island? The Contribution of the Analysis of Rapanui Human Remains.
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RBINS Staff Publications
