Ontogeny of Megalolaelaps colossus sp. nov. (Acari: Megalolaelapidae), an enigmatic symbiont of dung beetles (Coleoptera: Scarabaeidae) in Colombia

Cómbita-Heredia, Orlando; Quintero-Gutiérrez, Edwin Javier; Klompen, Hans

doi:10.11158/saa.23.6.7

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…A triagem dos invertebrados foi realizada em microscópio estereoscópico e, em seguida, armazenados em tubos do tipo eppendorf com álcool a 80%. A identificação taxonômica foi realizada com o auxílio de chaves específicas até o nível de família (Carvalho et al, 2000;Benetti et al, 2003;Bouchard, et al, 2004;Pes et al, 2005;Holzenthal et al, 2007;Krantz et al, 2009;Serra et al, 2009;Segura et al, 2011;Castro 2013;Cómbita-Heredia et al, 2013).…”

Section: Methodsunclassified

Biomonitoramento ambiental de fontes naturais da Chapada do Araripe no semiárido brasileiro

Simões,

Ferreira,

Calixto Júnior

et al. 2024

Rev. DELOS

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A conservação dos recursos hídricos e da biodiversidade é crucial para o desenvolvimento sustentável, porém, diversos fatores têm degradado esses ambientes, incluindo poluição e desmatamento próximo aos cursos d'água. Este estudo avaliou nove fontes naturais na Chapada do Araripe, usando macroinvertebrados bentônicos como indicadores da qualidade da água. Os resultados mostram que, embora as fontes apresentem características naturais, como pH ácido e baixa concentração de sólidos dissolvidos, a qualidade da água é variada. Metade das nascentes tiveram sua qualidade ambiental classificadas como “Ótima” ou “Boa” pelo índice de Impacto Ambiental em Nascentes (IIAN), sendo a restante considerada “Razoável”. Algumas nascentes foram classificadas como "Boa" e outras como "Duvidosa" pelo Índice Biological Monitoring Working Party (BMWP'). Esses resultados destacam a necessidade de medidas de conservação para proteger esses ecossistemas e garantir a qualidade da água, especialmente em áreas mais afetadas pela ação humana. Este estudo contribui para o conhecimento e conservação dos recursos hídricos na região, além de fornecer uma base para futuras pesquisas sobre a qualidade da água em ambientes semiáridos.

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Section: Methodsunclassified

Biomonitoramento ambiental de fontes naturais da Chapada do Araripe no semiárido brasileiro

Simões,

Ferreira,

Calixto Júnior

et al. 2024

Rev. DELOS

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“…Buryn and Brandl (1992) did well in choosing a large number of mesostigmatid species (52 within 29 genera) over a wide range of idiosomal sizes (smallest 299.3 μm = Rhodacarellus sileciacus Willmann to largest 1323.3 μm = Pergamasus septentrionalis (Oudemans)). Size certainly matters to mites (Proctor and Walter 2018), with some mesostigmatids being of enormous scale (Cómbita-Heredia et al 2018. The gnathosoma of one of these has already been investigated in depth (Gorirossi 1956).…”

Section: The Span Of Species Usedmentioning

confidence: 99%

Feeding design in free-living mesostigmatid chelicerae (Acari: Anactinotrichida)

Bowman

2021

Exp Appl Acarol

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A model based upon mechanics is used in a re-analysis of historical acarine morphological work augmented by an extra seven zoophagous mesostigmatid species. This review shows that predatory mesostigmatids do have cheliceral designs with clear rational purposes. Almost invariably within an overall body size class, the switch in predatory style from a worm-like prey feeding (‘crushing/mashing’ kill) functional group to a micro-arthropod feeding (‘active prey cutting/slicing/slashing' kill) functional group is matched by: an increased cheliceral reach, a bigger chelal gape, a larger morphologically estimated chelal crunch force, and a drop in the adductive lever arm velocity ratio of the chela. Small size matters. Several uropodines (Eviphis ostrinus, the omnivore Trachytes aegrota, Urodiaspis tecta and, Uropoda orbicularis) have more elongate chelicerae (greater reach) than their chelal gape would suggest, even allowing for allometry across mesostigmatids. They may be: plesiosaur-like high-speed strikers of prey, scavenging carrion feeders (like long-necked vultures), probing/burrowing crevice feeders of cryptic nematodes, or small morsel/fragmentary food feeders. Some uropodoids have chelicerae and chelae which probably work like a construction-site mechanical excavator-digger with its small bucket. Possible hoeing/bulldozing, spore-cracking and tiny sabre-tooth cat-like striking actions are discussed for others. Subtle changes lead small mesostigmatids to be predator–scavengers (mesocarnivores) or to be predator–fungivores (hypocarnivores). Some uropodines (e.g., the worm-like prey feeder Alliphis siculus and, Uropoda orbicularis) show chelae similar in design to astigmatids and cryptostigmatids indicating possible facultative saprophagy. Scale matters—obligate predatory designs (hypercarnivory) start for mesostigmatids with chelal gape > 150 μm and cheliceral reach > 350 μm (i.e., about 500–650 μm in body size). Commonality of trophic design in these larger species with solifugids is indicated. Veigaia species with low chelal velocity ratio and other morphological strengthening specialisms, appear specially adapted in a concerted way for predating active soft and fast moving springtails (Collembola). Veigaia cerva shows a markedly bigger chelal gape than its cheliceral reach would proportionately infer suggesting it is a crocodile-like sit-and-wait or ambush predator par excellence. A small chelal gape, low cheliceral reach, moderate velocity ratio variant of the worm-like feeding habit design is supported for phytoseiid pollenophagy. Evidence for a resource partitioning model in the evolution of gnathosomal development is found. A comparison to crustacean claws and vertebrate mandibles is made. Alliphis siculus and Rhodacarus strenzkei are surprisingly powerful mega-cephalics for their small size. Parasitids show a canid-like trophic design. The chelicera of the nematophagous Alliphis halleri shows felid-like features. Glyphtholaspis confusa has hyaena-like cheliceral dentition. The latter species has a markedly smaller chelal gape than its cheliceral reach would suggest proportionately, which together with a high chelal velocity ratio and a high estimated chelal crunch force matches a power specialism of feeding on immobile tough fly eggs/pupae by crushing (durophagy). A consideration of gnathosomal orientation is made. Predatory specialisms appear to often match genera especially in larger mesostigmatids, which may scale quite differently. Comparison to holothyrids and opilioacarids indicates that the cheliceral chelae of the former are cutting-style and those of the latter are crushing-style. A simple validated easy-to-use ‘2:1 on’ predictive algorithm of feeding habit type is included based on a strength-speed tradeoff in chelal velocity ratio for ecologists to test in the field.

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“…Unfortunately, the function of these processes of the palp trochanter in Krantzolaspina and Megalolaelaps is unknown (Mašán andHalliday 2014, Cómbita-Heredia et al 2018). It should be noted that members of Megalolaelapidae are more similar morphologically to Pachylaelapidae and to Macrochelidae of the genus Neopodocinum Oudemans (Macrochelidae) than to Parholaspididae (Cómbita-Heredia et al 2018).…”

Section: Re-descriptionmentioning

confidence: 99%

Review of the mite genus Krantzolaspina Datta & Bhattacharjee (Mesostigmata, Parholaspididae) with re-description of K. angustatus comb. nov. (Ishikawa) from Indonesia

Quintero-Gutiérrez¹,

Sandmann²,

Cómbita-Heredia³

et al. 2020

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Herein, we update the diagnosis and description of the genus Krantzolaspina Datta & Bhattacharjee and provide a list of the three valid species including new combinations and synonyms, as follows: 1) Krantzolaspina angustatus (Ishikawa, 1987) comb. nov. (= Indutolaelaps jiroftensisHajizadeh et al., 2017syn. nov.), 2) K. rebatii Datta & Bhattacharjee, 1989 and 3) K. solimani (Metwali, 1983) comb. nov. Finally, we re-describe K. angustatus (Ishikawa, 1987) comb. nov. based on the holotype from Japan, voucher specimens from Iran and additional females that we found in soil samples from oil palm plantations in Sumatra, Indonesia.

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Ontogeny of Megalolaelaps colossus sp. nov. (Acari: Megalolaelapidae), an enigmatic symbiont of dung beetles (Coleoptera: Scarabaeidae) in Colombia

Cited by 7 publications

References 5 publications

Biomonitoramento ambiental de fontes naturais da Chapada do Araripe no semiárido brasileiro

Biomonitoramento ambiental de fontes naturais da Chapada do Araripe no semiárido brasileiro

Feeding design in free-living mesostigmatid chelicerae (Acari: Anactinotrichida)

Review of the mite genus Krantzolaspina Datta & Bhattacharjee (Mesostigmata, Parholaspididae) with re-description of K. angustatus comb. nov. (Ishikawa) from Indonesia

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Ontogeny of Megalolaelaps colossus sp. nov. (Acari: Megalolaelapidae), an enigmatic symbiont of dung beetles (Coleoptera: Scarabaeidae) in Colombia

Cited by 7 publications

References 5 publications

Biomonitoramento ambiental de fontes naturais da Chapada do Araripe no semiárido brasileiro

Biomonitoramento ambiental de fontes naturais da Chapada do Araripe no semiárido brasileiro

Feeding design in free-living mesostigmatid chelicerae (Acari: Anactinotrichida)

Review of the mite genus Krantzolaspina Datta &amp; Bhattacharjee (Mesostigmata, Parholaspididae) with re-description of K. angustatus comb. nov. (Ishikawa) from Indonesia

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Review of the mite genus Krantzolaspina Datta & Bhattacharjee (Mesostigmata, Parholaspididae) with re-description of K. angustatus comb. nov. (Ishikawa) from Indonesia