Karyotypes of water scavenger beetles (Coleoptera: Hydrophilidae): new data and review of published records

Angus, Robert B.; Sadílek, David; Shaarawi, Fatma; Dollimore, Hayley; Liu, Hsing-Che; Seidel, Matthias; Sýkora, Vít; Fikáček, Martín

doi:10.1093/zoolinnean/zlaa105

Cited by 3 publications

(4 citation statements)

References 63 publications

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“…The methods used for preparing chromosomes and the handling of the data are those used by Dutton and Angus (2007) and subsequent papers on Boreonectes . The methods were described in detail by Angus et al (2020) .…”

Section: Methodsmentioning

confidence: 99%

A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae)

Angus¹

2021

CCG

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The West European species of Boreonectes Angus, 2010 are reviewed. B. multilineatus (Falkenström, 1922) is shown to be widely distributed in the Pyrenees, where it is the only species known to occur. The chromosomes of all five west European species are found to have, in addition their different numbers of chromosomes, differences in the number and locations of secondary constrictions, and in some cases, the number of chromosomes with clear centromeric C-bands. The level of differences between the chromosomes of the species is in stark contrast with the very slight genetic (DNA) differences between them and this suggests that chromosome differentiation may have been a driver of speciation. Two of the species, B. griseostriatus (De Geer, 1774) and B. multilineatus, have distributions extending northwards as far as Arctic Scandinavia. It is pointed out that, while these northern areas now constitute the major portions of their ranges, they must be of fairly recent origins as most of the area would have been covered by ice sheets and therefore not habitable during the glacial maximum of the Last Glaciation. This contrasts with the situation in the area of the Central European mountains where fossil faunas, including Boreonectes, are known. B. griseostriatus, identifiable to species by its parameres, was present in the Woolly Rhinoceros site at Starunia in the Western Ukraine, and this fauna is discussed as well as an English fauna of similar age.

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Section: Methodsmentioning

confidence: 99%

A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae)

Angus¹

2021

CCG

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“…A paper summarizing the available information on the karyotypes of water scavenger beetles was recently published by Angus et al (2020). According to Angus et al (2020), in Acidocerinae "the diploid number of chromosomes is 2n = 18". Table 2 presents the list of known acidocerine karyotypes.…”

Section: Karyotypes Of Acidocerinaementioning

confidence: 99%

“…List of acidocerine species with known karyotypes. Origin refers to the country where the adults were collected according to Angus et al (2020). (Forster) United Kingdom Helochares obscurus (Müller) Sweden Helochares punctatus Sharp United Kingdom Helochares sauteri d 'Orchymont Taiwan Table 3.…”

Section: Larvae Of Acidocerinaementioning

confidence: 99%

The Acidocerinae (Coleoptera, Hydrophilidae): taxonomy, classification, and catalog of species

Girón¹,

Short²

2021

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The cosmopolitan subfamily Acidocerinae (Coleoptera: Hydrophilidae) is one of the largest and most taxonomically challenging lineages of water scavenger beetles. Recent phylogenetic studies have substantially advanced our understanding of acidocerine relationships but also illuminated the twin challenges of poorly delineated generic concepts and a classification broadly incompatible with the phylogeny. Here, these two challenges are addressed by providing a comprehensive synthesis and taxonomic tools for the Acidocerinae, including (1) a brief history and the current state of acidocerine classification, (2) a review of acidocerine ecology and collection methods, (3) the current knowledge of larval and fossil acidocerines, (4) a morphological primer on characters of taxonomic and systematic importance within the lineage, (5) a key to the world genera of Acidocerinae, (6) diagnoses, habitus, and aedeagal images, distribution maps, and summary of knowledge for each of the 23 extant genera in the subfamily, and (7) a complete annotated taxonomic catalog including the published distributions, synonyms, and references for all described 541 acidocerine species recognized as of 1 April 2021. The following nomenclatural acts are proposed to bring the phylogeny and classification into alignment: Colossocharesgen. nov. is established to accommodate two African species previously described as Helochares (s. str.); Novocharesgen. nov. is newly established to accommodate 15 Neotropical species previously included in Helochares (s. str.); the remaining Helochares subgenera Helocharimorphus Kuwert syn. nov. and Hydrobaticus MacLeay syn. nov. are synonymized with Helochares Mulsant. Peltochares Régimbart sensu nov. is redefined to include eight Old World species previously included in Helochares (s. str.). A lectotype is designated for Peltochares conspicuus Régimbart, the type species of the genus. The taxonomic and morphological circumscription of Helocharessensu nov. is narrowed and redefined.

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“…and Ramamurty, 1977;Bameul, 1996;1997;Nasserzadeh et al, 2005;Nasserzadeh and Komarek, 2017;Angus et al, 2020;Nasserzadeh, 2020).…”

Section: Introductionmentioning

confidence: 99%

Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)

Araújo

Munhoz

Serrão

2021

Rev. Bras. entomol.

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Members of the Hydrophilidae, one of the largest families of aquatic insects, are potential models for the biomonitoring of freshwater habitats and global climate change. In this study, we describe the morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris. The reproductive tract in sexually mature males comprised a pair of testes, each with at least 30 follicles, vasa efferentia, vasa deferentia, seminal vesicles, two pairs of accessory glands (a bean-shaped pair and a tubular pair with a forked end), and an ejaculatory duct. Characters such as the number of testicular follicles and accessory glands, as well as their shape, origin, and type of secretion, differ between Coleoptera taxa and have potential to help elucidate reproductive strategies and the evolutionary history of the group.

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Karyotypes of water scavenger beetles (Coleoptera: Hydrophilidae): new data and review of published records

Cited by 3 publications

References 63 publications

A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae)

A re-examination of the West European species of Boreonectes Angus, 2010, with particular reference to B. multilineatus (Falkenström, 1922) (Coleoptera, Dytiscidae)

The Acidocerinae (Coleoptera, Hydrophilidae): taxonomy, classification, and catalog of species

Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)

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