Topic
Hydrophilus
About: Hydrophilus is a research topic. Over the lifetime, 37 publications have been published within this topic receiving 388 citations.
Papers
TL;DR: A recent/ongoing morphological and genetic differentiation within Xantho hydrophilus, restricted gene flow between its Atlantic and Mediterranean populations (not allowing subspecific differentiation) and possible mtDNA introgression between the species X. sexdentatus are suggested.
Abstract: The crab genus Xantho Leach, 1814 is restricted to the northeastern Atlantic Ocean and the Mediterranean Sea. It consists of four species, Xantho hydrophilus (Herbst, 1790), X. poressa (Olivi, 1792), X. pilipes A. Milne-Edwards, 1867, and X. sexdentatus (Miers, 1881). X. hydrophilus has been divided into two geographic forms, of which one, X. h. granulicarpus (Forest, 1953), is postulated to be endemic to the Mediterranean Sea. In this study, we reconstruct phylogenetic relationships of the genus Xantho and related genera from the Atlantic Ocean or Mediterranean Sea and compare different geographic populations of Xantho hydrophilus and, to a lesser extent, of X. poressa by means of population genetic and morphometric analyses. The molecular phylogeny is based on two mitochondrial genes (large subunit rRNA and cytochrome oxidase I) and indicates that X. poressa, X. hydrophilus and X. sexdentatus form a monophyletic group, the latter two species sharing identical haplotypes. On the other hand, X. pilipes shows affinities to Xanthodius denticulatus. Population genetics based on the COI gene reveal genetic differentiation within X. hydrophilus. Morphometric results also give evidence for distinct geographic forms in X. hydrophilus with a clear discrimination. In comparison, morphometric discrimination between different geographic populations of X. poressa is less clear, but still significant. We therefore suggest a recent/ongoing morphological and genetic differentiation within Xantho hydrophilus, restricted gene flow between its Atlantic and Mediterranean populations (not allowing subspecific differentiation) and possible mtDNA introgression between the species X. hydrophilus and X. sexdentatus.
54 citations
TL;DR: It is shown that rufipes and lulescens are distinct species, and not a var.
Abstract: The European species of Anacaena Thomson are examined. Five species are recognised: A. bipustulata (Marsham), A. globulus (Paykull), A. limbata (Fabricius), A. lutescens (Stephens) and A. rufipes (Guilleheau). It is shown that rufipes and lulescens are distinct species, and not a var. of globulus and a synonym of limbala respectively. The species are keyed and redescribed. Synonymy is given on the basis of examination of type-material. Lectotypes are designated for Anacaena carinata Thomson, 1870, A. immatura Abeille de Perrin, 1901, A. globula var. nitidior Kuwert, 1890, A. variabilis Sharp, 1870, Brachypalpus ambiguus Rey, 1885, Laccobius marshami Stephens, 1839, Hydrophilus bipustulatus Marsham, 1802, Hydrobius foveolatus Stephens, 1829, H. lutescens Stephens, 1829, H. ochraceus Stephens, 1829, Sphaeridium limbalum Fabricius, 1792, and Philydrus nitidus Heer, 1841. Anacaena immalura, A. variabilis, Brachypalpus ambiguus, Laccobius marshami, Hydrobius lutescens var. s sordens and Philydrus nitidus are placed in synonymy with A. lutescens. A. globulus glabricollis d'Orchymont, 1940 (nec Schaufuss) and A. jordanensis Burmeister, 1985 are placed in synonymy with A. rufipes. Distributional records and data on habitat are given.
35 citations
TL;DR: The results show that A. hydrophilus and M. brevilingulata, with a chromosome number of n = 9, have less nuclear DNA than other closely related species which are either n = 4 or n = 5.
Abstract: A B S T RA C T Relative amounts of nuclear DNA were determined in root tip cells of seven species of Astereae: Aster hydrophilus Greene, A. oblongifolius Nutt., A. riparius H.B.K., Machaeranthera boltoniae (Greene) Turner and Horne, M. brevilingulata (Sch-Bip.) Turner and Horne, M. parviflora Gray, and M. tenuis (S. Wats.) Turner and Horne. The results show that A. hydrophilus and M. brevilingulata, with a chromosome number of n = 9, have less nuclear DNA than other closely related species which are either n = 4 or n = 5. Cytological analyses of meiosis in the intergeneric hybrid M. parviflora X A. hydrophilus showed cells with two or more small chromosomes of the latter species pairing with single large chromosomes of the former. Pachytene cells of the hybrids M. parviflora X A. hydrophilus, M. parviflora X A. riparius, and M. boltoniae X M. tenuis showed some unpaired chromosome segments. The significance of these results to chromosome evolution in the tribe Astereae is discussed.
30 citations
TL;DR: Flaviporus is characterized by lignicolous, relatively small and very thin basidiomes, small and broad spores, small pores, dimitic hyphal system, generatives with clamps and agglutinated hyphae.
Abstract: Flaviporus is characterized by lignicolous, relatively small and very thin basidiomes, small and broad spores, small pores, dimitic hyphal system, generatives with clamps and agglutinated hyphae. The species occur mostly in the tropics and southern hemisphere but F. brownei extends into Europe where it is restricted to glasshouses and mines. Seven new combinations are proposed: F. hydrophilus (Berk. & Curt.) Ginns, F. liebmanni (Fr.) Ginns, F. minutisporus (Reid et al.) Ginns, F. semisupiniformis (Murr.) Ginns, F. subundatus (Murr.) Ginns, F. vernicifluus (Berk.) Ginns, and Rigidoporus cartilagineus (Berk. & Br.) Ginns. A new variety is described: F. liebmanni var. subglobisporus Ginns.
29 citations
Journal Article•
TL;DR: A check list of Hydrophilidae species known in Turkey is presented for the first time and a new record for the Turkish fauna is reviewed and compared with H. piceus.
Abstract: A check list of Hydrophilidae species known in Turkey is presented for the first time. In addition, their distributions in Turkey are given. Fifty-four species are determined. Of these, Hydrophilus atterimus Eschscholtz, 1822, a new record for the Turkish fauna, is reviewed and compared with H. piceus (Linnaeus, 1758).
28 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 1 |
| 2019 | 1 |
| 2017 | 2 |
| 2015 | 2 |
| 2014 | 1 |