Report of Acineta euchaetae Sewell, 1951 from new locality of the Arabian Sea with notes on their taxonomy and distribution

Zootaxa ◽  
2021 ◽  
Vol 5039 (2) ◽  
pp. 291-298
Author(s):  
TAPAS CHATTERJEE ◽  
IGOR DOVGAL ◽  
VERONICA FERNANDES ◽  
AMRITA BHAUMIK ◽  
MANDAR NANAJKAR
Keyword(s):  
Adult Male ◽  
Arabian Sea ◽  
Calanoid Copepod ◽  
Developmental Stages ◽  
Systematic Position ◽  
Inland Waters ◽  
Ciliate Species ◽  
Rear Part

The article deals with the data about new find of the rare suctorian species Acineta euchaetae Sewell, 1951 on calanoid copepod host Euchaeta marina (Prestandrea, 1833) from the Arabian Sea. Seven young (sub-adult) individuals of the ciliate were observed on rear part of cephalothorax and on abdomen of adult male of copepod. The data about all known finds of A. euchaetae are discussed as well as the information on different developmental stages of the ciliate species. It is suggested that A. euchaetae is euryhaline species distributed in Eurasian coastal and inland waters and have preference for calanoid copepod hosts, but do not show specificity to any calanoid genus or species. The summarized diagnosis and refined systematic position of A. euchaetae are also provided.   

Descriptions of the adult male, prepupa and pupa of Xylococcus castanopsis Wu & Huang (Hemiptera: Coccomorpha: Xylococcidae)

Zootaxa ◽  
2018 ◽  
Vol 4438 (2) ◽  
pp. 339
Author(s):  
SAN’AN WU ◽  
SHAOBIN HUANG ◽  
QINGANG DONG
Keyword(s):  
Adult Male ◽  
Developmental Stages ◽  
Guangdong Province ◽  
Forest Stands ◽  
Guangzhou City ◽  
Forest Park ◽  
Holotype Female

The morphologies of the adult male, prepupa and pupa of Xylococcus castanopsis Wu & Huang (Hemiptera: Xylococcidae) are described and illustrated. These developmental stages were collected at Tianluhu Forest Park, Guangzhou city, Guangdong Province, China, from the same forest stands as the holotype female. 

Abundance of Boeckella gracilis (Daday, 1902) (Copepoda, Calanoida) in seasonal coastal pools in the Araucania region (38°S, Chile)

Crustaceana ◽  
2018 ◽  
Vol 91 (10) ◽  
pp. 1211-1217
Author(s):  
Patricio De los Ríos
Keyword(s):  
Correlation Analysis ◽  
Environmental Stress ◽  
Relative Abundance ◽  
Calanoid Copepod ◽  
Inverse Correlation ◽  
Inland Waters ◽  
Absolute Abundance ◽  
Significant Inverse Correlation

Abstract The presence of the calanoid copepod Boeckella gracilis (Daday, 1902) in Chilean seasonal pools has been only poorly studied as yet. The aim of the present study thus is to investigate the role of conductivity and temperature on the relative and absolute abundance of B. gracilis in seasonal coastal pools in the Araucania region (38°S, Chile). The results of correlation analysis revealed the presence of a significant inverse correlation between conductivity and relative abundance, whereas no significant correlations were found between conductivity and absolute abundance, between temperature and absolute abundance, and between temperature and relative abundance. These results agree partially with similar observations for mountain pools in the same region, but they would not agree with observations for calanoids of saline and subsaline inland waters in the northern and southern extremes of Chile. Considering this scenario, the species would show different populational responses to environmental stress in different situations, which phenomenon deserves to be studied more extensively and in more detail.

scholarly journals Effects of Topical Tebufenozide Application to Choristoneura fumiferana Pupae (Lepidoptera: Tortricidae)

Insects ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 184
Author(s):  
Lucas E. Roscoe ◽  
Glen Forbes ◽  
Rosanna Lamb ◽  
Peter J. Silk
Keyword(s):  
Adult Male ◽  
Developmental Stages ◽  
Choristoneura Fumiferana ◽  
Lethal Dose ◽  
Insect Growth Regulator ◽  
Economic Effects ◽  
Adult Longevity ◽  
Male And Female ◽  
Adult Deformity ◽  
Lepidopteran Pests

Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae) is a defoliating pest in Canada and the northeastern United States. Given its important ecological and economic effects in affected regions, several direct management techniques have been developed, including the application of the insect growth regulator tebufenozide (Mimic™, RH-5992) to feeding larval stages. While the effectiveness of tebufenozide, in this capacity, is understood, management programs of other lepidopteran pests have demonstrated the effectiveness of tebufenozide application when utilized against other life stages. Here, we investigated the toxicity of topically-applied tebufenozide to C. fumiferana pupae to determine if such a strategy could be feasible. We observed significant dose-dependent decreases in the likelihood of adult emergence, increases in the likelihood of pupal death or adult deformity at eclosion, and significant decreases in mean adult longevity. Estimated LD 50 (lethal dose) values for adult male and female C. fumiferana treated as pupae ≤ 4 days after pupation were approximately 1–3 and 2–3.5% ACI (active commercial ingredient) respectively. Estimated L-SD (lethal-sublethal) 50 doses for adult male and female C. fumiferana treated as pupae ≤4 days after pupation were <1, and <2% ACI, respectively. Mating success was also significantly lower in mating pairs containing adults treated as pupae. Although, the amounts required to cause appreciable pupal mortality were much higher than those currently applied operationally in the C. fumiferana system, our study illustrates the potential of tebufenozide to utilized against additional developmental stages in other lepidopteran pests.

Ascoma Development in Neophyllis melacarpa (Lecanorales, Ascomycota), with Notes on the Systematic Position of the Genus

1999 ◽  
Vol 47 (5) ◽  
pp. 783 ◽  
Author(s):  
Heidi Döring ◽  
Aino Henssen ◽  
Mats Wedin
Keyword(s):  
Developmental Stages ◽  
Systematic Position ◽  
Secondary Product ◽  
Generic Type ◽  
Characteristic Features ◽  
Product Chemistry

The ascoma ontogeny of Neophyllis melacarpa (F.Wilson)F.Wilson is described and similarities toAustropeltum glareosum Henssen, D&ouml;ring & Kantvilas are pointed out. Neophyllis is shown to formtrue podetia as well as pseudopodetia, and an unpigmented boundary tissue ofthin-walled, plasma-rich hyphae. Characteristic features include the formationof a boundary tissue separating a hypophysiate pseudopodetium from theascomatal tissue, a large subglobose hypothecium, and a cortical covering ofyounger developmental stages. Ascus structure and conidiophore anatomy aredescribed and similarities to Austropeltum arediscussed. The secondary product chemistry of Neophyllisis described in detail, and two chemical taxa, corresponding to the currentlyaccepted species N. melacarpa andN. pachyphylla (MÜll.Arg.) Schneider, aretentatively accepted. The systematic position ofNeophyllis is discussed, and the generic distinctnessfrom Gymnoderma is clarified. It is concluded thatNeophyllis is closely related toAustropeltum, and that there is no support for regardingNeophyllis as closely related toCladonia, the generic type of Cladoniaceae. The possibleaffinities of Neophyllis to Stereocaulaceae andSphaerophoraceae are discussed, but it is pointed out that the delimitation ofall three families needs further investigation.

Phylogeny of the Limnophilinae (Limoniidae) and early evolution of the Tipulomorpha (Diptera)

2008 ◽  
Vol 22 (6) ◽  
pp. 627 ◽  
Author(s):  
Guilherme Cunha Ribeiro
Keyword(s):  
Adult Male ◽  
Male Genitalia ◽  
Cladistic Analysis ◽  
Sister Group ◽  
Morphological Characters ◽  
Systematic Position ◽  
Sensu Stricto ◽  
Crane Flies ◽  
Male Morphology ◽  
First Time

Tipulomorpha (crane flies) comprise one of the largest subgroups of Diptera, but its phylogeny at different levels has been poorly explored. This study presents the most comprehensive cladistic analysis of the group ever made, with emphasis on the genera and subgenera of the subfamily Limnophilinae (Limoniidae), assumed to include some of the earliest lineages of Tipulomorpha sensu stricto and therefore important for the understanding of the early patterns in the evolution of the crane flies. Eighty-eight characters of the male imago were scored for 104 exemplar species. The most parsimonious trees were searched using implied weighting, in the framework of a sensitivity analysis with different values of k (2 to 6). The dataset based on the characters of adult male morphology showed high levels of homoplasy and yielded very incongruent and unstable phylogenetic results, which are very sensitive to changes in analytical parameters. In the preferred and most parsimonious phylogenetic hypothesis, the Pediciidae is the sister-group of all other Tipulomorpha sensu stricto. The results indicate the paraphyly of the Limoniidae with respect to the Cylindrotomidae and Tipulidae, which are considered sister-groups. The Limoniidae subfamilies Limnophilinae, Limoniinae and Chioneinae are considered non-monophyletic. The study allowed a reconstruction of the possible ground plan condition of selected features of the adult male morphology of crane flies. The genera/subgenera Epiphragma (Epiphragma), Acantholimnophila, Shannonomyia, Limnophila (Arctolimnophila), Eloeophila, Conosia, Polymera, Polymera (Polymerodes), Prionolabis, Eutonia, Phylidorea (Phylidorea), Metalimnophila, Gynoplistia (Cerozodia), Gynoplistia (Dirhipis), Nothophila, Pseudolimnophila (Pseudolimnophila), Pilaria and Ulomorpha are considered monophyletic, but in general are defined by combinations of very homoplastic character states. Two Temperate Gondwanan clades, (Tonnoirella + (Edwardsomyia + (Tinemyia + (Rhamphophila + (Nothophila))))) and ((Notholimnophila + Bergrothomyia) + (Mesolimnophila + (Chilelimnophila + Ctenolimnophila))) are recovered. The genera Limnophila, Neolimnomyia, Gynoplistia (sensu lato) and Hexatoma (sensu lato) are considered non-monophyletic. The systematic position and some morphological characters of ‘problematic’ taxa, such as Dactylolabis, Elephantomyia, Helius and Atarba are discussed on the light of the proposed phylogeny and the analysis of the characters. Character states are richly illustrated. A detailed study of the morphology of the male genitalia is made, and several genera and species have the morphology of the male genitalia illustrated for the first time.

Clarification of the systematic position ofCercariaeum crassumWesenberg-Lund, 1934 (Digenea), based on karyological analysis and DNA sequences

2011 ◽  
Vol 86 (3) ◽  
pp. 293-301 ◽  
Author(s):  
R. Petkevičiūtė ◽  
V. Stunžėnas ◽  
G. Stanevičiūtė
Keyword(s):  
Dna Sequences ◽  
Phylogenetic Trees ◽  
Developmental Stages ◽  
Sequence Divergence ◽  
Sister Group ◽  
Systematic Position ◽  
Life Cycles ◽  
Significant Information ◽  
Rdna Sequences ◽  
Species Specific

AbstractChromosome set and rDNA sequences of the larval digeneanCercariaeum crassumwere analysed in order to clarify its systematic position and possible adult form. Parasites were obtained from the sphaeriid bivalvePisidium amnicum, collected in Lithuanian and Finnish rivers. The karyotype is shown to consist of five pairs (2n = 10) of large, up to 14 μm, chromosomes. Complement, composed of a low diploid number of exclusively bi-armed elements, presumably arose through Robertsonian fusions of acrocentric chromosomes. Consistent with a Robertsonian-derived karyotype, one or two small, metacentric, mitotically stable B chromosomes were detected in the cells of parthenitae isolated from some host individuals. A phylogenetic analysis using rDNA internal transcribed spacer 2 (ITS2) and 28S sequences corroborates the allocation ofC. crassumto the family Allocreadiidae. In neighbour-joining and maximum parsimony phylogenetic treesC. crassumclusters into one clade withAllocreadiumspp., and is the closest sister group in relation toA. isoporum; the level of rDNA sequence divergence between them (2.67% for ITS2 and 1.16% for 28S) is consistent with the level expected for intrageneric variation. The present study adds significant information to a database for establishing species-specific characters for confident characterization of different developmental stages of allocreadiid species, clarification of their life cycles and evaluation of intra- and interspecific variability.

Protein composition of various developmental stages of Dipetalonema viteae (Filarioidea)

1982 ◽  
Vol 56 (3) ◽  
pp. 251-255 ◽  
Author(s):  
A. Prüsse ◽  
H. J. Diesfeld ◽  
S. Vollmer
Keyword(s):  
Adult Male ◽  
Developmental Stages ◽  
Protein Composition ◽  
Total Proteins ◽  
Sodium Dodecylsulphate ◽  
Male And Female ◽  
Third Stage ◽  
Dipetalonema Viteae ◽  
Slab Gels

ABSTRACTThe protein composition of various developmental stages of Dipetalonema viteae was analysed on polyacrylamide slab gels in the presence of sodium-dodecylsulphate. When the total proteins of adult male and female parasites, microfilariae, eggs, and third-stage larvae were compared, apparent qualitative similarities between mature and immature filariae were observed. However, several stage specific components were also identified.

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