Ignacio Ribera's research while affiliated with University Pompeu Fabra and other places
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Publications (426)
Chemical cues in subterranean habitats differ highly from those on the surface due to the contrasting environmental conditions, such as absolute darkness, high humidity or food scarcity. Subterranean animals underwent changes to their sensory systems to facilitate the perception of essential stimuli for underground lifestyles. Despite representing...
Minute moss beetles (Hydraenidae) are one of the most speciose and widespread families of aquatic Coleoptera, with an estimated 4000 extant species, found in the majority of aquatic habitats from coastal rock pools to mountain streams and from the Arctic Circle to the Antarctic islands. Molecular phylogenetic works have improved our understanding o...
Adaptation to life in caves is often accompanied by dramatically convergent changes across distantly related taxa, epitomized by the loss or reduction of eyes and pigmentation. Nevertheless, the genomic underpinnings underlying the evolution of cave-related phenotypes are largely unexplored. We investigated genome-wide gene evolutionary dynamics in...
Subterranean specialization is often accompanied by dramatic phenotypic changes epitomized by regressive evolution (e.g. loss or reduction of eyes and pigmentation). Nevertheless, the genetic underpinnings underlying these changes have been largely unexplored. The beetle tribes Leptodirini (Leiodidae), Hydroporini and Bidessini (Dytiscidae) represe...
Morphologically cryptic lineages confound many estimates of global biodiversity and are often discovered in ecologically specialized taxa, subject to strong morphological constraint. Such a situation may apply in many extreme environments, including supralittoral rockpools, where dramatic fluctuations in water availability and salinity impose stron...
Morphologically cryptic lineages confound many estimates of global biodiversity and are often discovered in ecologically specialized taxa, subject to strong morphological constraint. Such a situation may apply in many extreme environments, including supralittoral rockpools, where dramatic fluctuations in water availability and salinity impose stron...
A new species of the genus Phalacrichus SHARP, 1902 (Coleoptera: Limnichidae: Limnichinae) is described from Paraguay: P. monday sp.n. The new species is characterized by the unique denticulate lateral pronotal margins. The habitus and diagnostically important morphological details are depicted by color photographs and SEM micrographs.
Understanding sources of variation in animal thermal limits is critical to forecasting ecological responses to climate change. Here, we estimated upper and lower thermal limits, and their capacity to respond to thermal acclimation, in several species and populations of diving beetles (Dytiscidae) from diverse geographic regions representative of va...
The chemosensory system has experienced relevant changes in subterranean animals, facilitating the perception of specific chemical signals critical to survive in their particular environment. However, the genomic basis of chemoreception in cave‐dwelling fauna is largely unexplored. We generated de novo transcriptomes for antennae and body samples o...
A new representative of the subtribe Trechodina, Iberotrechodes spinosus n. gen., n. sp., subterranean and known so far from a single cave system of the Cantabrian chain (NW Spain), is described. The external morphology of the new species is highly derived within Trechodina, in particular for the peculiar and unique shape of its elytra, and likely...
We redefine the genus Troglocharinus Reitter, 1908 based on a phylogenetic analysis with a combination of mitochondrial and molecular data. We recovered the current Speonomites mengeli (Jeannel, 1910) and S. mercedesi (Zariquiey, 1922) as valid, separate species within the Troglocharinus clade, not directly related to Speonomites Jeannel, 1910, a f...
The long-term geological stability of aquatic habitats has been demonstrated to be a determinant in the evolution of macroinvertebrate fauna, with species in running (lotic) waters having lower dispersal abilities, smaller ranges and higher gene flow between populations than species in standing (lentic) environments. Lotic species have been hypothe...
We describe four species of Ochthebius subgenus Cobalius (Coleoptera, Hydraenidae) from coastal rockpools of the western Palaearctic Region: O. anzar sp. nov. (south Morocco, plus a possible specimen from Lanzarote, Canary Islands), O. cortomaltese sp. nov. (Malta), O. evae sp. nov. (Atlantic coast of Morocco and Mediterranean coast of south Spain)...
The chemosensory system has experienced relevant changes in subterranean animals, facilitating the orientation into darkness via the perception of specific chemical signals critical to survive in this particular environment. However, the genomic basis of chemoreception in cave-dwelling fauna is largely unexplored. We generated de novo transcriptome...
Physiological traits are key in determining the vulnerability of narrow range, highly specialized animals to climate change. It is generally predicted that species from more stable environments possess lower thermal tolerance breadths and thermal plasticity than those from more variable habitats-the so-called 'climatic variability hypothesis'. Howe...
The intertidal Hyphalus mascarenensis sp.n. (Coleoptera: Limnichidae: Hyphalinae) is described from Rodrigues Island (Mascarene Islands) and compared with the two hitherto known species of the western Indian Ocean. Previously unnoticed peculiar morphological structures and habitat notes are provided.
Specialization to extreme environments is often considered an evolutionary dead‐end, leading to irreversible adaptations and reduced evolvability. There is, however, mixed evidence for this macroevolutionary pattern, and limited data from speciose lineages. Here, we tested the effect of habitat specialization to hypersaline waters in the diversific...
We describe a new subterranean species of the genus Exocelina Broun, 1886 (Coleoptera: Dytiscidae) from the Malay Peninsula. Almost all of the 196 species of that genus are epigean and distributed mainly in New Guinea, Australia, Oceania and New Caledonia. One epigean species is, however, known from China. The discovery of a species on the Malay Pe...
A new species of the costal genus Brachemys Abeille de Perrin, 1890 is described from Crete, B. minotaurus n.sp. (Coleoptera, Malachiidae). The species is included in the subgenus Atelestodes Abeille de Perrin, 1890 due to the lack of modified protarsi, although the subgeneric classification of Brachemys may need to be revised. Specimens of the new...
The evolution of the coleopteran suborder Adephaga is discussed based on a robust phylogenetic background. Analyses of morphological characters yield results nearly identical to recent molecular phylogenies, with the highly specialized Gyrinidae placed as sister to the remaining families, which form two large, reciprocally monophyletic subunits, th...
Abstract Cave‐dwelling ectotherms, which have evolved for millions of years under stable thermal conditions, could be expected to have adjusted their physiological limits to the narrow range of temperatures they experience and to be highly vulnerable to global warming. However, most of the few existing studies on thermal tolerance in subterranean i...
The thoracic morphology of the troglobiontic leiodid species Troglocharinus ferreri (Cholevinae, Leptodirini) is described and documented in detail. The features are mainly discussed with respect to modifications linked with subterranean habits. Troglocharinus is assigned to the moderately modified pholeuonoid morphotype. The body is elongated and...
We report the aquatic Coleoptera (families Dryopidae, Dytiscidae, Georissidae, Gyrinidae, Heteroceridae, Hydraenidae, Hydrophilidae and Limnichidae) from North Oman, mostly based on the captures of fourteen localities sampled by the authors in 2010. Four species are described as new, all from the Al Hajar mountains, three in family Hydraenidae, Hyd...
Leiodidae are the second largest subterranean radiation of beetles at family rank. To explore morphological trends linked with troglobiontic habits and characters with potential phylogenetic significance, the head of the cave-dwelling species Troglocharinus ferreri (Cholevinae, Leptodirini) was examined in detail. Overall, the general pattern is si...
Ochthebius (Ochthebius) lobiccoastal habitatsollis Rey, 1885 is recorded for the first time from the Iberian Peninsula (Girona) and the island of Corsica; new records are also given for the islands of Menorca and Sardinia. The species is known only from coastal habitats through the Gulf of Lion and the Ligurian and Balearic seas, typically living i...
Aquatic beetles can be characterized based on the habitats where they live, with a main
division between species living in standing water or species living in running waters. Both
habitat types present differences based on their physical and chemical characteristics, leading to different ecological dynamics at geological scale, in essentially long-...
Cave-dwelling ectotherms, which have evolved for millions of years under stable thermal conditions, could be expected to have adjusted their physiological limits to the narrow range of temperatures they experience and be highly vulnerable to global warming. However, the few existing studies on thermal physiology in subterranean invertebrates point...
Beetles have colonized water many times during their history, with some of these events involving extensive evolutionary radiations and multiple transitions between land and water. With over 13,000 described species, they are one of the most diverse macroinvertebrate groups in most nonmarine aquatic habitats and occur on all continents except Antar...
Iberoporusplutosp. n. , the first stygobiont beetle from Portugal (Dytiscidae, Hydroporinae), is described from a single female from the cave Soprador do Carvalho (Coimbra). The species is highly troglomorphic, depigmented, blind, and with elongated appendages not adapted for swimming. A molecular phylogeny based on a combination of three mitochond...
The genus Speonemadus Jeannel, 1922 currently includes 12 species distributed in the Western Mediterranean (Iberian Peninsula, North Africa, Sicily and continental Italy). Two new species are described from Morocco, S. brusteli sp. n. from the Rif and S. comasi sp. n. from the High Atlas, the first in the S. vandalitiae-group of species and the sec...
The smallest beetles and the smallest non-parasitic insects belong to the staphylinoid family Ptiliidae. Their adult body length can be as small as 0.325 mm and is generally smaller than 1 mm. Here we address the phylogenetic relationships within the family using formal analyses of adult morphological characters and molecular data, and also a combi...
Ochthebius (Cobalius) lanthanus sp. nov. is described from rockpools in Gran Canaria, based on specimens collected by Professor F. Balfour-Browne in 1932 and newly collected material. The species is morphologically very similar to O. (Cobalius) algicola Wollaston, 1871 from Madeira, but at a genetic distance of ca 10% as measured with the gene cyto...
One of the main challenges in disciplines such as ecology, biogeography, conservation and evolutionary biology is to understand and predict how species will respond to environmental changes, especially within a climate change context. We focus on the deep subterranean environment to minimize uncertainties in predictions, because it is one of the fe...
Thermal tolerance is a key vulnerability factor for species that cannot cope with changing conditions by behavioural adjustments or dispersal, such as subterranean species. Previous studies of thermal tolerance in cave beetles suggest that these species may have lost some of the thermoregulatory mechanisms common in temperate insects, and appear to...
Evolutionary novelties may influence the diversification of new lineages, allowing species to colonize new habitats or to exploit new resources. One of the most remarkable traits in primarily freshwater organisms is the possibility to tolerate saline or hypersaline habitats. Recent work in some water beetle families (Hydrophilidae and Dytiscidae) h...
External and internal thoracic structures of two carabid species (Trechini) were examined and documented with different techniques. The study has a main focus on the eyeless cave-dwelling specialist Sinaphaenops wangorum, but detailed information is also provided for a species occurring in cave entrances. The phylogenetic background of the structur...
The subtribe Deronectina Galewski, 1994 (Dytiscidae, Hydroporinae, Hydroporini) is distributed in the Nearctic, in the north of the Neotropical region, and in the Palaearctic and Afrotropical regions. It is currently composed of 194 species and 13 subspecies in eight genera: Amurodytes Fery & Petrov, 2013, Boreonectes Angus, 2010, Deronectes Sharp,...
The complex geological history of the western Mediterranean region conceals the interpretation of the evolutionary history of its current fauna, as similar distribution patterns may have very different temporal and geographic origins. Particularly intriguing are some subterranean species in islands, which origin is usually difficult to interpret as...
Ochthebiinae, with c. 650 species distributed worldwide, are the second most speciose subfamily of the aquatic beetle family Hydraenidae. They are ecologically the most diverse hydraenid subfamily, with terrestrial species as well as species in almost all types of aquatic habitats, including hypersaline waters. Ochthebiinae include the tribes Ochth...
The Convention on Biological Diversity (CBD) commits its 196 nation parties to conserve biological diversity, use its components sustainably, and share fairly and equitably the benefits from the utilization of genetic resources. The last of these objectives was further codified in the Convention's Nagoya Protocol (NP), which came into effect in 201...
RESUMEN: Este artículo presenta el proyecto de investigación CAVEheAT (cambio climático, nicho térmico y conservación de la biodiversidad subterránea). El objetivo del proyecto es estudiar el nicho térmico (rango de tolerancia térmica y capacidad de aclimatación) de especies (principalmente coleópteros) con diferentes grados de especialización al m...
Abstract. We describe a new species of Limnichidae (Coleoptera) from Eocene Baltic amber, Platypelochares electricus sp. nov. The species belongs to the extant genus Platypelochares Champion, 1923, with six species distributed in the Oriental Region, characterised by an almost hemispherical shape, lateral articulation of the meso- and metatarsi, an...
We describe a new species of Limnichidae (Coleoptera) from Eocene Baltic amber, Platypelochares electricus sp. nov. The species belongs to the extant genus Platypelochares Champion, 1923, with six species distributed in the Oriental Region, characterised by an almost hemispherical shape, lateral articulation of the meso-and metatarsi, and presence...
Meladema Laporte, 1835 is a genus of large diving beetles, found in the Western Palaearctic, from the Canary Islands and Madeira to western Turkey (Bilton & Ribera 2017). The genus currently contains four species: the widespread M. coriacea Laporte, 1835, distributed from the Canary Islands to Turkey and ranging from southern France and the central...
One of the main challenges in ecology, biogeography and evolution is to understand and predict how species may respond to environmental changes. Here we focus on the deep subterranean environment, a system that minimizes most of the typical uncertainties of studies on epigean (surface) environments. Caves are relatively homogeneous habitats with ne...
Phylogenetic trees are not always recovered with enough support to test particular hypothesis. An increase in the number of gene fragments usually improves support, but traditional PRCs and Sanger sequencing is time consuming, the selection of markers is always problematic, and the costs increase linearly with the number of sequences. An easy, fast...
Some species of the diving beetle tribe Hygrotini (subfamily Hydroporinae) are among the few insects able to tolerate saline concentrations more than twice that of seawater. However, the phylogenetic relationships of the species of Hygrotini, and the origin and evolution of tolerance to salinity in this lineage, are unknown. In this work, we aim to...
Species living in the deep subterranean environment tend to share similar morphological characters evolved independently from epigean ancestors, the troglomorphic phenotype. They also tend to have very restricted distributions, as a consequence of their limited dispersal capabilities. Until recent years, the predominant view on the evolution of the...
The current state of knowledge of the suprageneric relationships in Cholevinae is either derived from informal evaluations of putative synapomorphies or based on molecular studies with limited taxonomic sampling. Here we assessed the higher-level relationships in this subfamily based on a phylogenetic analysis of 97 morphological characters scored...
We describe a new species of Micragasma J. Sahlberg, 1900
(Coleoptera, Hydraenidae), which is here treated as a subgenus of
Ochthebius Leach, 1815. The new species, O. (Micragasma) minoicus
sp. n., was found at the margins of a coastal rockpool in the island
of Crete. The species differs from the other two known species of
Micragasma in both extern...
Morphological adaptations of cave-dwelling organisms including different groups of Coleoptera have fascinated researchers since a long time. Nevertheless, very few detailed documentations of the anatomy of cave beetles using modern techniques are available. In this study, we describe and illustrate external and internal cephalic features of free-li...
Twenty years ago, Keith Miller, David Bilton and Hans Fery (1997) published a checklist of Hydradephaga from Cyprus. There have been no updates since then, and there are also no recent checklists of other families of water beetles from the island. In April 2016 AV, IR, JV & AM conducted a six-day collecting trip to Greek Cyprus, focussing on saline...
Meladema Laporte, 1835 are relatively large, stream-dwelling diving beetles, distributed widely in the Western Palaearctic, from the Atlantic Islands to Turkey, and from southern France and the Balkans to the central Sahara. In addition to the three previously recognised taxa (M. coriacea Laporte, 1835, M. imbricata (Wollaston, 1871) and M. lanio (...
Dispersal is a critical factor determining the spatial scale of speciation, which is constrained by the ecological characteristics and distribution of a species' habitat and the intrinsic traits of species. Endogean taxa are strongly affected by the unique qualities of the below-ground environment and its effect on dispersal, and contrasting report...
The tribe Hygrotini Portevin, 1929 is currently composed of four genera, Heroceras Guignot, 1950, Herophydrus Sharp, 1880, Hygrotus Stephens, 1828 (with two subgenera, Coelambus Thomson, 1860, and Hygrotus s. str.), and Hyphoporus Sharp, 1880. A recent molecular phylogeny of the tribe with ca. 45% of the 137 described species of Hygrotini, includin...
Transitions from fresh to saline habitats are restricted to a handful of insect lineages, since the colonization of saline waters requires specialized mechanisms to deal with osmotic stress. Previous studies have suggested that tolerance to salinity and desiccation could be mechanistically and evolutionarily linked, but the temporal sequence of the...
Species of the genus Meladema (Dytiscidae, Colymbetinae) are some of the largest macroinvertebrates in the western Palearctic region, being top predators in fishless streams. Two of the three described species, Meladema imbricata (Wollaston, 1871) and Meladema lanio (Fabricius, 1775) are Macaronesian endemics from the Canary Islands and Madeira, re...
Quaternary glacial cycles drove major shifts in both the extent and location of the geographical ranges of many organisms. During glacial maxima, large areas of central and northern Europe were inhospitable to temperate species, and these areas are generally assumed to have been recolonized during interglacials by range expansions from Mediterranea...
Current geographical distributions in conjunction with species-level phylogenies have been viewed as offering an enormous potential for investigating the causes of speciation. However, many authors have concluded that species ranges are too dynamic to retain the historical signal of the speciation processes. We develop an approach to explore the ex...
Karyotypes are given for Boreonectes emmerichi (Falkenström, 1936) from its type locality at Kangding, China, and for B. Alpestris (Dutton & Angus, 2007) from the St Gotthard and San Bernardino passes in the Swiss Alps. A phylogeny based on sequence data from a combination of mitochondrial and nuclear genes recovered western Palaearctic species of...
Caccothryptus Sharp, 1902 is a genus of Limnichidae with a mainly Oriental distribution, with only some species at the fringes of the Palaearctic (Hernando & Ribera 2014, 2016). The genus was recently revised by Hernando & Ribera (2014), which described 14 new species and divided the by then 20 species in five species groups, the compactus, rouyeri...
The knowledge of the Hydraenidae of sub-Saharan Africa, and in particular of the genus Hydraena Kugelann, 1794, is
most incomplete. As an example, in southern Africa only three species were described before the revision of Perkins
(2014), which raised the number to 31. Only 15 species are currently known from Central Africa, between the Sahel and
S...
Adult head structures are well known in the coleopteran suborders Archostemata and Adephaga, whereas the available information is very fragmentary in the megadiverse Polyphaga, including the successful superfamily Staphylinoidea.Inthepresent study,the cephalicmorphology of the cholevine species Catops ventricosus is described in detail and document...
In most lineages, most species have restricted geographic ranges, with only few reaching widespread distributions. How these widespread species reached their current ranges is an intriguing biogeographic and evolutionary question, especially in groups known to be poor dispersers. We reconstructed the biogeographic and temporal origin of the widespr...
Aphaobius haraldi sp. n. from the mesovoid shallow substratum (MSS) of the Austrian Alps is described, illustrated, and compared with the closest species of the genus. The new species belongs to the A. kraussi species group, formerly includ-ing five species. It can be readily separated from other species of the genus by the large parameres, with an...
The superfamily Dytiscoidea contains six families with an aquatic lifestyle, with most of its extant diversity in two families: the burrowing water beetles (Noteridae) and the diving beetles (Dytiscidae). The other families have few species (up to six) and generally highly disjunct extant distributions. Aspidytidae currently contains one genus with...
Understanding the origin and evolution of novel traits is one of the unknowns on which evolut ionary
biologist work. These traits may influence the origin and diversification of new lineages, and some of
them may also facilitate the transition between different habitat types. Focusing on the aquatic
environment, important transitions occurred betwe...
![Figure 3. Ancestral climate preferences (annual mean temperature [°C]...](profile/Jerome-Moriniere/publication/303460208/figure/fig2/AS:365236092719109@1464090478619/Ancestral-climate-preferences-annual-mean-temperature-C-and-annual-precipitation_Q320.jpg)
The underlying mechanisms responsible for the general increase in species richness from temperate regions to the tropics remain equivocal. Many hypotheses have been proposed to explain this astonishing pattern but additional empirical studies are needed to shed light on the drivers at work. Here we reconstruct the evolutionary history of the cosmop...
Evolutionary rates analysis of the body and genitally size and the complexity in Limnebius genera