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1.
Chemosphere ; 286(Pt 3): 131785, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34399264

RESUMO

Quantifying methylmercury (MeHg) concentrations and uptake at the base of the food web is useful for assessing mercury exposure risk to higher trophic level organisms. Higher MeHg concentrations near the base of the food web may result in more MeHg exposure and accumulation in higher trophic organisms. Here, we analyze MeHg in caddisflies, mayflies, lake water, and sediment collected from two temperate lakes and one brook in Kejimkujik National Park, Nova Scotia, Canada. Overall, caddisfly larvae MeHg (15.38-276.96 ng/g; n = 29) was not significantly correlated with water chemistry. Whereas mayfly naiads MeHg (14.28-166.82 ng/g; n = 31) was positively correlated with water MeHg (rs = 0.43), negatively correlated with pH (rs = -0.49), and positively correlated with dissolved organic carbon (DOC; rs = 0.48). Of the mercury in insect tissues, the %MeHg ranged from 56 to 75 % in caddisfly larvae and 38-47 % in mayfly naiads. MeHg bioaccumulation factors (BAF) varied greatly (water to tissue BAFs = 0.145 × 106-1.054 × 106; sediment to tissue BAFs = 0.017 × 106-0.541 × 106). This study highlights the importance of quantifying variations in MeHg bioaccumulation and BAFs of common aquatic insect bioindicators at the base of complex food webs.


Assuntos
Ephemeroptera , Mercúrio , Compostos de Metilmercúrio , Poluentes Químicos da Água , Animais , Monitoramento Ambiental , Peixes , Cadeia Alimentar , Insetos , Lagos , Mercúrio/análise , Nova Escócia , Água , Poluentes Químicos da Água/análise
2.
Sci Total Environ ; 804: 150162, 2022 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-34798730

RESUMO

Repurposing of brownfield sites is often promoted, because it is perceived that protecting the "green belt" limits damage to biodiversity; yet brownfield sites provide scarce habitats with limited disturbance, so conversely are also perceived to be ecologically valuable. Combining data from three national-scale UK biological monitoring schemes with location data on historical landfill sites, we show that species richness is positively associated with both the presence and increasing area of ex-landfill sites for birds, plants and several insect taxa. Assemblage rarity of birds is also positively associated with presence of ex-landfill sites. Species richness associated with ex-landfill sites declined over time for birds and insects but increased over time for plants. These findings suggest that development of brownfield sites may have unintended negative consequences for biodiversity, and imply that to minimise loss of biodiversity, brownfield site repurposing could be targeted towards smaller sites, or sites in areas with a high density of other brownfield sites.


Assuntos
Biodiversidade , Ecossistema , Animais , Aves , Conservação dos Recursos Naturais , Insetos , Plantas
3.
Chemosphere ; 287(Pt 1): 131909, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34461331

RESUMO

We present a novel meta-community approach to explore the influence of species traits, such as adult body size, larval feeding type and microhabitat, as well as larval macrohabitat (main river channel vs. floodplain water bodies) on the concentration of total Hg accumulated ([THg]) in assemblages of adult caddisflies. We analyzed [THg] in 157 light-trapped adult caddisflies in a floodplain sector of the French upper Rhône River and used a linear mixed effect model to decipher the role of species traits and habitats in Hg accumulation. Variation of [THg] between species was best explained by the larval feeding type, whereas the contributions of adult size and larval micro and macro-habitat were minor. Results showed that [THg] in species associated with floodplain macrohabitats in the larval stage was lower than in those associated with the main river channel. This difference could depend on complexation of Hg by DOM (in the floodplain) and MES (in the main channel). This research provides a first evidence of the potential of an entire caddisfly assemblage for the assessment of contamination in large alluvial rivers. The implications of the results are discussed in view of the possible role of caddisflies as vectors of Hg to riparian predators.


Assuntos
Mercúrio , Poluentes Químicos da Água , Animais , Ecossistema , Monitoramento Ambiental , Insetos , Mercúrio/análise , Rios , Poluentes Químicos da Água/análise
4.
Sci Total Environ ; 804: 150022, 2022 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-34517322

RESUMO

As complex mosaics of lotic, lentic, and terrestrial habitats, intermittent rivers and ephemeral streams (IRES) support high biodiversity. Despite their ecological importance, IRES are poorly represented in routine monitoring programs, but recent recognition of their considerable-and increasing-spatiotemporal extent is motivating efforts to better represent IRES in ecological status assessments. We examine response patterns of aquatic macroinvertebrate communities and taxa to flow intermittence (FI) across three European climatic regions. We used self-organizing map (SOM) to ordinate and classify sampling sites based on community structure in regions with continental, Mediterranean and oceanic climates. The SOM passively introduced FI, quantified as the mean annual % flow, and visualized its variability across classified communities, revealing a clear association between community structure and FI in all regions. Indicator species analysis identified taxa indicative of low, intermediate and high FI. In the continental region, the amphipod Niphargus was indicative of high FI and was associated with groundwater-fed IRES, whereas indicators of Mediterranean IRES comprised Odonata, Coleoptera and Heteroptera taxa, which favor lentic conditions. In the oceanic region, taxa indicative of relatively high FI included leuctrid stoneflies and a limnephilid caddisfly, likely reflecting the colonization of IRES by aerial adults from nearby perennial reaches. The Diptera families Chironomidae and Simuliidae showed contrasting FI preferences among regions, reflecting environmental heterogeneity between regions and the coarse taxonomic resolution to which these organisms were identified. These region-specific community and taxon responses of aquatic biota to FI highlight the need to adapt standard biotic indices to enable effective ecological status assessments in IRES.


Assuntos
Biomarcadores Ambientais , Rios , Animais , Ecossistema , Monitoramento Ambiental , Humanos , Insetos , Invertebrados
5.
Zootaxa ; 5018(1): 1-75, 2021 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-34810424

RESUMO

A checklist is presented of all 986 extant species of Diptera known from the archipelago of the Maltese Islands situated in the central Mediterranean. Species considered to be alien to the Islands are listed with annotations in Appendix 1. The history of dipterology applicable to the islands is outlined and the three important historical published records by Zetterstedt, Rondani and Bezzi de Stefani-Perez are listed in Appendices 24. Species names that are synonyms are indicated where these were used in published records for Malta more or less after the Catalogue of Palaearctic Diptera was published. Species we consider to have been misidentifications are also indicated with an annotation in most cases. Vermileo immaculatus Carles-Tolr syn. n. Cuesta-Segura and Vermileo balearicus Wheeler syn. n. are proposed junior synonyms of Vermileo vermileo (Linnaeus).


Assuntos
Dípteros , Animais , Insetos , Ilhas
6.
Zootaxa ; 5016(4): 543-558, 2021 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-34810431

RESUMO

A complementary re-description of Kyphopteryx dorsalis Kimmins, 1947 is presented on the basis of a fresh male and additional females from southeastern Tibet, southwestern China. The hitherto unknown inner structures of the female terminalia are described, as well as further details of the male genitalia. In this study, we also present the first records of Capnia s.l. yunnana Li Yang, 2011 from Tibet and a formal description of an unassociated Capnia s.l. female collected together with the above species. An updated checklist of the named species of Capniidae and Taeniopterygidae from China is also given.


Assuntos
Hemípteros , Insetos , Distribuição Animal , Animais , China , Feminino , Masculino , Neópteros
7.
Zootaxa ; 5016(3): 441-447, 2021 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-34810437

RESUMO

Myrsidea danielalfonsoi new species is described and illustrated from the Austral thrush (Turdus falcklandii magellanicus King, 1831) in Chile.


Assuntos
Amblíceros , Doenças das Aves , Passeriformes , Animais , Chile , Insetos
8.
Zootaxa ; 5016(3): 419-429, 2021 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-34810439

RESUMO

A new genus and species, Guttulapsyche mayaensis gen. et sp. nov., of Psychidae are described from Mexico. The new taxon shares some characters with Arrhenophaninae and several others with Typhoniinae. Together with Antillonatus sessilis Nez Davis, 2016 it is already the second Neotropic species with a complex of characteristics that deviates from the previous understanding of the two subfamilies. The morphology of adults, larva, and pupa is described and illustrated. The larval cases are attached at the distal end, a behaviour that is unique among all known Psychidae. Information on distribution and habitat as well as some ecological data are provided.


Assuntos
Lepidópteros , Mariposas , Animais , Etologia , Insetos , Larva , México
9.
Zootaxa ; 5016(2): 196-204, 2021 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-34810455

RESUMO

Neochauliodes van der Weele, 1909 is the largest genus of the subfamily Chauliodinae of the megalopteran family Corydalidae, currently with 47 described species. Here we report Neochauliodes triangulatus sp. nov. from western Yunnan, China. The new species belongs to the Neochauliodes bowringi species-group and is confirmed to be different from the other species of this group based on morphological and molecular evidence.


Assuntos
Holometábolos , Insetos , Animais , China
10.
Zootaxa ; 4996(3): 513-524, 2021 Jul 06.
Artigo em Inglês | MEDLINE | ID: mdl-34810516

RESUMO

The larva of Stenophylax fissus (McLachlan 1875) is redescribed, illustrated, and compared with morphologically similar Limnephilidae larvae from the Iberian Peninsula. In addition, the sequence of the mtCOI gene in the barcode region of one individual is reported. Likewise, the barcode and the conspecificity between two larvae and one female of the non-sequenced species S. crossotus are given. In addition, the high genetic diversity among S. sequax populations is highlighted, suggesting a complex of cryptic species. Finally, a diagnostic matrix of the known larvae of Stenophylax species from the Iberian Peninsula is provided.


Assuntos
Besouros , Holometábolos , Animais , Código de Barras de DNA Taxonômico , Feminino , Insetos , Larva/genética
11.
Zootaxa ; 4996(2): 353-362, 2021 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-34810525

RESUMO

A new eastern Nearctic species of tube-making caddisfly of the genus Polycentropus Curtis 1835 (Trichoptera: Polycentropodidae) is described and illustrated based on adult males and females. Polycentropus aileenae n. sp., a member of the Polycentropus confusus Species Group, is reported from the Canadian province Nova Scotia and the U.S. states Tennessee and Pennsylvania. The species is diagnosed based on multiple aspects of the male genitalia, including inflection of the dorsal processes of the preanal appendages and the slightly recurved dorsum of the apex of the phallus. New U.S. state records of P. confusus Hagen 1861 and P. elarus Ross 1944 from Florida, and P. thaxtoni Hamilton Holzenthal 1986 from Alabama, are also provided.


Assuntos
Holometábolos , Insetos , Animais , Canadá , Extremidades , Feminino , Masculino
12.
Zootaxa ; 4996(2): 343-352, 2021 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-34810526

RESUMO

A new genus of family Perlodidae, Tibetisoperla Huo Du, gen. nov. is described with one new species from Tibet, China. Male of the new genus is characterized by the divided tergum 10 with several large apical erect setae, highly reduced vesicle on sternum 8, and the sclerotized paraprocts with separate apical sclerite.


Assuntos
Insetos , Neópteros , Distribuição Animal , Animais , China , Masculino , Tibet
13.
Zootaxa ; 4995(3): 537-550, 2021 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-34810552

RESUMO

Three new species of Rhyacophila (Trichoptera: Rhyacophilidae) from Japan are described. Among them, R. hattorii n. sp. and R. kobayashii n. sp. are assigned to the Rhyacophila sibirica Group. Another new species, R. kuranishii n. sp. is assigned to the Rhyacophila anatina Group. The figures of R. yukii by Schmid (1970) are actually of R. hattorii, not R. yukii Tsuda 1942. We describe these three new species, redescribe R. yukii, and discuss the diversity of this genus.


Assuntos
Holometábolos , Insetos , Distribuição Animal , Animais , Japão
14.
Zootaxa ; 5006(1): 106-109, 2021 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-34810582

RESUMO

A new caddisfly species Plectrocnemia kirmikhia sp. nov. (Polycentropodidae) is described from Priabonian Rovno amber (Upper Eocene, 33.937.8 million years old). Now the family Polycentropodidae is represented in Rovno amber by 16 named species, and the genus Plectrocnemia includes 5 described species in this locality.


Assuntos
Âmbar , Holometábolos , Animais , Fósseis , Insetos
15.
Zootaxa ; 5061(3): 432-450, 2021 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-34810615

RESUMO

Two new species of Protonemura Kempny, 1898, P. lupina sp. n., from the Castellane Prealps and the southern Mercantour region in the French Maritime Alps, and P. alexidis sp. n., from the southern flank of the Massif Central, are described, illustrated, and compared to their closest relative species P. risi (Jacobson Bianchi, 1905) and P. spinulosa (Navs, 1921). Information on distribution and ecological preferences of these new species is provided.


Assuntos
Insetos , Neópteros , Distribuição Animal , Animais , França
16.
Zootaxa ; 5061(2): 377-382, 2021 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-34810620

RESUMO

Problems are discussed in evaluating character state variation in the insect order Thysanoptera, particularly in the family Phlaeothripidae, illustrated by two such problems in the genus Haplothrips Amyot Serville. The synonymy of Jironiella Retana-Salazar Soto-Rodriguez with Haplothrips is reconfirmed, and Haplothrips aliakbarii Mirab-balou Miri is recognised as a new synonym of H. globiceps Bagnall.


Assuntos
Tisanópteros , Animais , Insetos
17.
Zootaxa ; 5060(4): 533-565, 2021 Nov 02.
Artigo em Inglês | MEDLINE | ID: mdl-34810650

RESUMO

Adult Trichoptera material collected from different localities in Myanmar resulted in the detection of eleven new species which are described as Rhyacophila inwabumensis spec. nov., Hydropsyche kachinenis spec. nov., Limnocentropus rossicorum spec. nov., Lepidostoma pennicularium spec. nov., Lepidostoma indivisum spec. nov., Apatania naumanni spec. nov., Neophylax obliquostriatus spec. nov., Nothopsyche anawrahta spec. nov., Aplatyphylax bamaricus spec. nov., Aplatyphylax myanmaricus spec. nov., and Oecetis kachinomekana spec. nov. Neophylax nigripunctatus Tian Li 1993 (in Tian et al. 1993), syn. nov. is excluded from Neophylax McLachlan 1871 and synonymized with Phylostenax himalus Mosely 1935. Plectrocnemia bifurcata Tian 1993 (in Tian et al. 1993) is synonymized with P. kainam Malicky 1993, syn. nov. Ninety-eight species are recorded from various places in Myanmar including some inadequately known taxa for which new illustrations of the male genitalia are provided.


Assuntos
Holometábolos , Insetos , Animais , Genitália Masculina , Masculino , Mianmar
18.
Zootaxa ; 5071(2): 289-295, 2021 Nov 23.
Artigo em Inglês | MEDLINE | ID: mdl-34810666

RESUMO

Three species of Lachesilla, in species group rufa, from the Sierra Tarahumara, Chihuahua, Mexico, are here described and illustrated: L. byei n. sp., L. furthi n. sp., and L. raramuri n. sp. Two of them belong in Subgroup IIb of the species group, one showing affinities with L. sommermanae Garca Aldrete and L. yakima Mockford Garca Aldrete, the second one showing affinity with L. salamana Garca Aldrete. The third species belongs in Subgroup I of the species group, showing affinities with L. aspera Garca Aldrete and L. chiricahua Garca Aldrete. The especies here described raise to seven the number of species of Lachesilla in the Sierra Tarahumara.


Assuntos
Insetos , Neópteros , Animais , México
19.
Zootaxa ; 5071(2): 206-222, 2021 Nov 23.
Artigo em Inglês | MEDLINE | ID: mdl-34810672

RESUMO

Three new genera and three new species of hystrignathid nematodes were collected from the hindgut of passalid beetles in the Yunnan Province, China. Huntia morffei gen. n. et sp. n. from Ceracupes fronticornis (Westwood) differs from related genera in the shape of the stoma, in the cephalic structure, and in the lack of annulation in the cervical region. Parakongonema sinica gen. n. et sp. n. from Aceraius grandis (Burmeister) and C. fronticornis can be easily distinguished from related genera in having the oral opening surrounded by a cuticular ring, the ring being surrounded by a cuticular flap, in the shape of the oesophagus, and in the cephalic structure. Parahystrignathus tongbiguanensis gen. n. et sp. n. from C. fronticornis and A. grandis differs from related genera by having the cervical region armed with alternating rows of spines, with 16 spines in the first row, and by lacking the first cephalic annule. In addition, the 18S and 28S rDNA partial sequences of three new species were obtained. The phylogeny of Hystrignathidae was inferred using partial sequences of the 28S rDNA and revealed patterns that suggest that the shape of the parasite digestive tract may reflect the evolutionary relationships of hystrignathid nematodes.


Assuntos
Besouros , Nematoides , Animais , China , Besouros/genética , Insetos , Nematoides/genética , Filogenia
20.
Zootaxa ; 5071(1): 143-150, 2021 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-34810676

RESUMO

Two new species of Leuctridae (Plecoptera) from Wuyi Mountains, Fujian Province of southeastern China, Rhopalopsole wuyishanensis sp. nov. and Rhopalopsole trichotoma sp. nov. are described and illustrated. The new species are compared to the closely related species of the R. dentata group and the R. shaanxiensis group in this genus, respectively.


Assuntos
Insetos , Neópteros , Distribuição Animal , Animais , China
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