Corydalus

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Francisco Valente-neto - One of the best experts on this subject based on the ideXlab platform.

  • First record of Chironomidae larvae (Insecta, Diptera) as prey of Temnocephala (Platyhelminthes, Temnocephalidae), an ectosymbiont on Corydalidae larvae (Megaloptera).
    Revista Brasileira De Entomologia, 2012
    Co-Authors: Susana Trivinho-strixino, Fabio Laurindo Da Silva, Francisco Valente-neto
    Abstract:

    First record of Chironomidae larvae (Insecta, Diptera) as prey of Temnocephala (Platyhelminthes, Temnocephalidae), an ectosymbiont on Corydalidae larvae (Megaloptera). We registered first time Temnocephala Blanchard, ectosymbiont on Corydalidae, as a predator of Chironomidae larvae. We examined 28 Corydalidae larvae (Corydalus and Protochauliodes) under stereomicroscopic in search for Temnocephala and Chironomidae larvae attached on it. We found 24 temnocephalan attached on five megalopteran larvae body. Furthermore, eight Temnocephala exhibited chironomid larvae in their gut contents, interaction unknown previously. Gut content analysis revealed the most abundant taxon was Corynoneura, and also larvae of Larsia, Rheotanytarsus and Tanytarsus were recorded as well. This study included Corydalus and Protochauliodes as new hosts of Temnocephala, which might be important for their dispersion and population dynamic.

  • First record of larvae of Chironomidae (Insecta, Diptera) as prey of Temnocephala sp. (Platyhelminthes, Temnocephalidae), an ectosymbiont on larvae of Corydalidae (Megaloptera) Primeiro registro de larvas de Chironomidae como presas de Temnocephala s
    Elsevier, 2012
    Co-Authors: Susana Trivinho-strixino, Fabio Laurindo Da Silva, Francisco Valente-neto
    Abstract:

    First record of larvae of Chironomidae (Insecta, Diptera) as prey of Temnocephala sp. (Platyhelminthes, Temnocephalidae), an ectosymbiont on larvae of Corydalidae (Megaloptera). This study constitutes the first record of Temnocephala Blanchard, an ectosymbiont on Corydalidae, as a possible predator of chironomid larvae. Twenty-eight Corydalidae larvae (Corydalus and Protochauliodes) were examined under stereomicroscopic in search for Temnocephala and Chironomidae larvae, of which five megalopteran larvae had 24 Temnocephala sp. associated. Furthermore, eight of these Temnocephala worms had chironomid larvae in their gut contents, an interaction previously unknown. Gut content analyses revealed Corynoneura as the commonest chironomid, but larvae of Larsia, Rheotanytarsus and Tanytarsus were recorded as well. This study included Corydalus and Protochauliodes as hosts for Temnocephala, which might be important for this worm dispersion and population dynamics.Primeiro registro de larvas de Chironomidae como presas de Temnocephala sp. (Platyhelminthes, Temnocephalidae), um ectosimbionte de larvas de Corydalidae (Maegaloptera). Este estudo constitui o primeiro registro de Temnocephala Blanchard (Platyhelminthes, Temnocephalidae), um ectosimbionte em larvas de Megaloptera, como um possível predador de larvas de Chironomidae. Vinte e oito larvas de Corydalidae (Corydalus e Protochauliodes) foram examinadas sobre estereomicroscópio na busca por Temnocephala e larvas de Chironomidae, das quais cinco larvas de Megaloptera continham 24 Temnocephala sp. associadas. Além disso, oito Temnocephala possuíam em seu conteúdo estomacal larvas de Chironomidae, uma interação desconhecida anteriormente. A análise do conteúdo estomacal revelou Corynoneura como o quironomídeo mais abundante, e também algumas larvas de Larsia, Rheotanytarsus e Tanytarsus. Este estudo inclui Corydalus e Protochauliodes como hospedeiros de Temnocephala, os quais podem ser importantes para a dispersão e dinâmica populacional desses vermes

  • First record of larvae of Chironomidae (Insecta, Diptera) as prey of Temnocephala sp. (Platyhelminthes, Temnocephalidae), an ectosymbiont on larvae of Corydalidae (Megaloptera)
    Revista Brasileira de Entomologia, 2012
    Co-Authors: Susana Trivinho-strixino, Fabio Laurindo Da Silva, Francisco Valente-neto
    Abstract:

    First record of larvae of Chironomidae (Insecta, Diptera) as prey of Temnocephala sp. (Platyhelminthes, Temnocephalidae), an ectosymbiont on larvae of Corydalidae (Megaloptera). This study constitutes the first record of Temnocephala Blanchard, an ectosymbiont on Corydalidae, as a possible predator of chironomid larvae. Twenty-eight Corydalidae larvae (Corydalus and Protochauliodes) were examined under stereomicroscopic in search for Temnocephala and Chironomidae larvae, of which five megalopteran larvae had 24 Temnocephala sp. associated. Furthermore, eight of these Temnocephala worms had chironomid larvae in their gut contents, an interaction previously unknown. Gut content analyses revealed Corynoneura as the commonest chironomid, but larvae of Larsia, Rheotanytarsus and Tanytarsus were recorded as well. This study included Corydalus and Protochauliodes as hosts for Temnocephala, which might be important for this worm dispersion and population dynamics.

Atilano Contreras-ramos - One of the best experts on this subject based on the ideXlab platform.

  • The Megaloptera (Insecta: Neuropterida) of Colombia
    Aquatic Insects, 2018
    Co-Authors: Adrian Ardila-camacho, Atilano Contreras-ramos
    Abstract:

    The knowledge of Megaloptera (Neuropterida) fauna of Colombia is updated. Based on the specimens studied and literature records, it was determined that 18 species grouped into three genera (Ilyobius Enderlein, 1910, Chloronia Banks, 1908, and Corydalus Latreille, 1802) and two families (Sialidae and Corydalidae) are recognized to occur in the country. Within the provided records, two new species of Corydalus, Corydalus liui sp. n. and Corydalus sophiae sp. n., are described and illustrated. Last larval instar of C. armatus Hagen, 1861 and C. liui sp. n. are described and illustrated. Comments about the biology and distribution of the majority of the species are included. Illustrations of the external morphology and genital structures of selected species are also provided. Keys for identification of adults and larvae accounting with descriptions of Colombian Megaloptera are presented.

  • Journal of Insect Science | www.insectscience.org ISSN: 1536-2442 Gynomorphic mandible morphology in the dobsonfly, Corydalus cornutus
    2013
    Co-Authors: David E. Bowles, Atilano Contreras-ramos, Robert W. Sites
    Abstract:

    Two aberrant males of Corydalus cornutus (L.) (Insecta: Megaloptera), which exhibit unusually short mandibles with discrete dentition, are recorded from a locality in Missouri. Morphological details of the specimens, as well as implications for the overall morphological variation of the genus and species are discussed. The term gynomorphic is suggested as the best descriptor of this case, given that little explanatory information is available to classify these specimens as true gynandromorphs

  • Phylogenetic review of dobsonflies of the subfamily Corydalinae and the genus Corydalus Latreille (Megaloptera: Corydalidae)
    Zootaxa, 2011
    Co-Authors: Atilano Contreras-ramos
    Abstract:

    Phylogenetic relationships of the World genera of dobsonflies, subfamily Corydalinae, are reappraised, as well as those of species of the New World genus Corydalus, both on the basis of morphological characters. Previous phylogenetic hypotheses of dobsonfly genera by Glorioso, Penny, and Contreras-Ramos, respectively, are re-evaluated, and a fourth revised phylogeny is presented. Ninety-five characters of 10 taxa, one outgroup and nine ingroup taxa, were used in the updated analysis of Corydalinae. It recognizes four lineages, with Chloroniella as sister to the other three, of which the Nevromus lineage (Acanthacorydalis + Nevromus + Neoneuromus) is sister to the Corydalus lineage (Chloronia + Platyneuromus + Corydalus), and both as a group are sister to the Protohermes lineage (Protohermes + Neurhermes). The main changes in the updated Corydalinae phylogeny are the placement of Chloroniella as sister to all other dobsonfly genera, and the placement of Acanthacorydalis as a member of the Nevromus lineage. Previously, Penny had proposed Chloroniella as sister to all dobsonfly genera except the Protohermes lineage, and both Glorioso and Penny, respectively, placed Acanthacorydalis as sister to the Corydalus lineage. About Corydalus, its species phylogeny is herein updated, as four species from Venezuela were added to the genus after its taxonomic revision. For the new phylogeny, 120 characters of 35 taxa, two outgroup and 33 ingroup taxa, were used. It produced a strict consensus of two trees, better resolved than the previous one. The C. arpi species group is moved to sister of all other species except the C. cephalotes species pair, while the C. batesii species group is conserved, being the only unresolved group within the phylogeny. Two of the species added, C. hayashii and C. mayri, belong to the well defined C. arpi species group, of Guayana Shield affinity, whereas C. crossi is sister to a large and widespread group beginning with the C. nubilus species group, and C. clavijoi is sister to C. tesselatus within the latter group.

  • A new species of Corydalus Latreille from Venezuela (Megaloptera, Corydalidae)
    ZooKeys, 2010
    Co-Authors: Atilano Contreras-ramos, Klaus Von Der Dunk
    Abstract:

    A new species of dobsonfly, Corydalus wanningeri, from Venezuela, is described and illustrated. It superficially resembles Corydalus neblinensis Contreras-Ramos, with a uniform reddish coloration of body and wings. Yet, because of male genitalic structure it might be closely related to Corydalus crossi Contreras-Ramos. Specimens were collected from a rain forest transitional zone between the Orinoco lowlands and the Gran Sabana plateau, in Bolivar state. This is the 15th species of Corydalus to be recorded from Venezuela, rendering this the country with the highest number of documented Corydalus species. A key to the sexually dimorphic, long-mandibled Venezuelan species of the genus is provided.

  • A new species of Corydalus Latreille from Venezuela (Megaloptera, Corydalidae)
    Pensoft Publishers, 2010
    Co-Authors: Atilano Contreras-ramos, Klaus Von Der Dunk
    Abstract:

    A new species of dobsonfly, Corydalus wanningeri, from Venezuela, is described and illustrated. It superficially resembles C. neblinensis Contreras-Ramos, with a uniform reddish coloration of body and wings. Yet, because of male genitalic structure it might be closely related to C. crossi Contreras-Ramos. Specimens were collected from a rain forest transitional zone between the Orinoco lowlands and the Gran Sabana plateau, in Bolívar state. This is the 15th species of Corydalus to be recorded from Venezuela, rendering this the country with the highest number of documented Corydalus species. A key to the sexually dimorphic, long-mandibled Venezuelan species of the genus is provided

Von Der Dunk Klaus - One of the best experts on this subject based on the ideXlab platform.

Eugenia López-lópez - One of the best experts on this subject based on the ideXlab platform.

  • Assessment of seasonal and spatial variations of biochemical markers in Corydalus sp. (Megaloptera: Corydalidae), a non-conventional biomonitor, in a mountain cloud forest in Mexico
    Environmental Science and Pollution Research, 2020
    Co-Authors: Axel Eduardo Rico-sánchez, Alexis Joseph Rodríguez-romero, Jacinto Elías Sedeño-díaz, Eugenia López-lópez
    Abstract:

    Rivers are critical ecosystems for protecting and harboring high biodiversity. Tropical rivers particularly are unique for facing extreme climatic events under the current accelerated disruption from human activities. The Bobos-Nautla river basin is exposed to climatic events and disturbances from anthropogenic impacts that stress aquatic organisms. We assessed the health condition of this river system using a non-conventional biomonitor, Corydalus sp., with a set of early-warning biomarkers including lipid peroxidation levels (LPO) and antioxidant activity, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and the neurotransmitter acetylcholinesterase (AChE) considering their spatial and temporal variations. Biomarkers and water quality parameters were analyzed, and the integrated biomarker response (IBR) was assessed as a stress index. Biomarkers showed no significant spatial differences; however, a high-stress period during the rainy season was detected, evidenced by the highest LPO levels; this period is related to the leaching of allochthonous materials from agricultural and urban zones. The peak IBR value during the rainy season confirmed the seasonality of biomarkers. A slight increase in IBR was recorded in lowlands, seemingly associated with agricultural land and human settlements. A principal component analysis showed nutrient enrichment during the rainy season and depletion during the cold-dry season, together with a peak activity of antioxidant enzymes. These results highlight the importance of climatic events such as the rainy season on the health condition of Corydalus sp., which is highly sensitive to the complex mixtures of pollutants that enter the waterbody during extreme climatic events, promoting oxidative stress. Our results also showed the ability of Corydalus sp. to recover and return to a basal level.

Contreras-ramos Atilano - One of the best experts on this subject based on the ideXlab platform.

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