Morphological features of larvae of the genus Argis (Decapoda, Crangonidae) from coastal Kamchatka and adjacent waters

2018 ◽  
Vol 27 (1) ◽  
pp. 11-33 ◽  
Author(s):  
N.A. Sedova ◽  
S.S. Grigoriev
Keyword(s):  
Morphological Characteristic ◽  
Morphological Features ◽  
Okhotsk Sea ◽  
East Part ◽  
The Family ◽  
Late Stages

Larvae of five species of the family Crangonidae (Argis crassa, A. dentata, A. lar, A. ochotensis and A. ovifer) from plankton of east part of Okhotsk Sea and from Avacha Gulf are described. Morphological features of the larvae are compared for purpose of their identification in planktonic samples. The main morphological features of larvae at corresponding stages are revealed. Larvae of these species are similar in most features. Distinctions concern only several details of their structure. Figures of early and late stages of zoea are presented. It is shown that larvae of the genus Argis can have two or three zoeal stages. Generalized morphological characteristic for the larvae of shrimps from the genus Argis is given.

A test of the predator avoidance hypothesis to explain delayed onset of communal breeding

2019 ◽  
Vol 97 (4) ◽  
pp. 332-339
Author(s):  
D. Strickland ◽  
E. Brouwer ◽  
T.M. Burg
Keyword(s):  
Predator Avoidance ◽  
Group Living ◽  
Breeding Cycle ◽  
Communal Breeding ◽  
The Family ◽  
Perisoreus Canadensis ◽  
Insufficient Time ◽  
Anticosti Island ◽  
Free Environment ◽  
Late Stages

A neglected question in the study of communal breeding concerns why alloparental behaviour begins at variously late stages in the breeding cycle. In group-living corvids, the delay tends to be longer in species that are small and (or) typically have only a small nonbreeder complement. This pattern has been attributed to the relatively poor defensive capabilities of such species and their consequently greater need to minimize predator-attracting traffic to the nest or fledglings. We tested this predator avoidance hypothesis with the Canada Jay (Perisoreus canadensis (Linnaeus, 1766)), a species in which the feeding of young by any nonbreeders in the family group is delayed until the fledgling period. We reasoned that, on Anticosti Island, Quebec (Canada), in the absence of squirrels and other nest predators, nonbreeders might be permitted to feed nestlings as well as fledglings, and that breeders might feed nestlings more frequently (with smaller food loads) than on the mainland. We found no evidence for either prediction and thus no support for the predator avoidance hypothesis but suggest that Anticosti Canada Jays may have had insufficient time to evolve behaviour more appropriate for their predator-free environment. Secondarily, we confirmed that in all observed instances, the nonbreeders were offspring of the breeding pair from previous years and that they therefore failed to provision nestlings in spite of an apparent genetic interest to do so.

scholarly journals Analysis of Morphological Features and Flavonoid Compositions of Crabapple Exposed to 60Coγ Radiation Treatments

2018 ◽  
Vol 46 (1) ◽  
pp. 82-89
Author(s):  
Yanfen LU ◽  
Suxiao HAO ◽  
Hui GENG ◽  
Yuncong YAO
Keyword(s):  
Nutritive Value ◽  
Morphological Characteristics ◽  
Morphological Features ◽  
Aflp Analysis ◽  
Germplasm Resources ◽  
Dna Diversity ◽  
The Family ◽  
Rosaceae Family ◽  
Flavonoid Composition ◽  
Radiation Treatments

Flavonoids are important secondary metabolites, whose content and composition such as anthocyanin and flavonol have been associated with fruit quality and affect fruit coloration. Crabapple (Malus spp.), with rich color and nutritive value, belongs to the family M. genus of the Rosaceae family, and it is widely used in landscape for its rich flavonoid compositions. Radiation mutagenesis breeding may increase the gene mutation frequency and enhance diversity of species, so it is a predominant approach for plant germplasm innovation. However, the changes of crabapple morphological characteristics and flavonoid compositions by radiation are not clear. In this study, we employed 60Coγ radiation to M.cv. ‘Royalty’ crabapple, and then surveyed the changes of leaves and flowers in the growth and morphology traits, color parameters, flavonoid composition, and the genetic diversity. The result found that 60Coγ radiation decreased plant height, stem diameter and leaf and flower areas. And it promoted the flavonoids accumulation in leaves, but inhibited that in flowers. Additionally, 60Coγ radiation improved DNA diversity. W60-7, W40-2 and W40-5 plants showed clear phenotypic variation by AFLP analysis. These results provide evidence that mutagenesis breeding may change the morphological features and flavonoid compositions, and expand crabapple germplasm resources and improve its application value. 

scholarly journals Cypselar diversity in four species of Senecio L. (Asteraceae)

2014 ◽  
Vol 21 (1) ◽  
pp. 13-17
Author(s):  
Tulika Talukdar ◽  
Sobhan Kumar Mukherjee
Keyword(s):  
Morphological Characters ◽  
Flowering Plants ◽  
Morphological Features ◽  
Phenotypic Information ◽  
Important Member ◽  
The Family ◽  
Plant Taxon ◽  
Specific Concept

The genus Senecio L. is one of the largest genera of flowering plants and is an important member of the tribe Senecioneae (Asteraceae). Phenotypic information, including a broad range of morphological characters is very crucial for phylogenetic reconsideration of any family, tribe or genus. In the family Asteraceae, very little attention has been paid to cypselar diversity, though it is regarded as taxonomically valuable. A sincere attempt has been made to study detailed cypselas macro and micro-morphological features of four species of Senecio L. These diacritical features could be used to strengthen current inter-specific concept of Senecio L.DOI: http://dx.doi.org/10.3329/bjpt.v21i1.19251Bangladesh J. Plant Taxon. 21(1): 13-17, 2014 (June)

Larval morphology of Dart-Poison Frogs (Anura: Dendrobatoidea: Aromobatidae and Dendrobatidae)

Zootaxa ◽  
2013 ◽  
Vol 3637 (5) ◽  
pp. 569 ◽  
Author(s):  
DAVID A. SÁNCHEZ
Keyword(s):  
Digestive System ◽  
Larval Morphology ◽  
Stages Of Development ◽  
Taxonomic Assignment ◽  
Digestive Tube ◽  
Early Stages ◽  
Constant Diameter ◽  
The Family ◽  
Upper Jaw ◽  
Late Stages

Tadpoles in the superfamily Dendrobatoidea (families Aromobatidae and Dendrobatidae), housed in zoological collections or illustrated in publications, were studied. For the most part, tadpoles of species within the family Aromobatidae, the subfamilies Colostethinae and Hyloxalinae (of the family Dendrobatidae), and those of the genus Phyllobates, Dendrobatinae (Dendrobatidae) have slender anterior jaw sheaths with a medial notch and slender lateral processes, triangular fleshy projections on the inner margin of the nostrils and digestive tube with constant diameter and color and its axis sinistrally directed, concealing the liver and other organs. These morphologies are different from the ones observed in tadpoles of species included in the Dendrobatinae (minus Phyllobates). Exceptions to these morphological arrangements are noted, being the digestive system arrangement and the nostril ornamentation more plastic than the shape of the upper jaw sheath. Tadpoles of all species of the Dendrobatoidea have similar disposition of digestive organs in early stages, but differentiate in late stages of development. Classifying the upper jaw sheath into the two recognized states is possible from very early stages of development, but gut disposition and nostril ornamentation cannot be determined until late in development, making classification and taxonomic assignment of tadpoles based on these morphological features challenging.

scholarly journals New ridged, conical, fissiculate blastoid from the Permian of Timor

2013 ◽  
Vol 87 (6) ◽  
pp. 1071-1076
Author(s):  
James Sprinkle ◽  
Johnny A. Waters
Keyword(s):  
Twentieth Century ◽  
New Genus ◽  
Morphological Features ◽  
Rugose Coral ◽  
The Family

Permian rocks from the Indonesian island of Timor contain an abundant and diverse pelmatozoan echinoderm fauna that was extensively monographed in the first half of the twentieth century. Recent collections have produced specimens of Corrugatoblastus savilli, n. gen. n. sp., the first new genus of blastoid described from Timor in 70 years. Corrugatoblastus savilli is a ridged and furrowed, conical, fissiculate blastoid with a highly unusual thecal morphology mimicking a small, solitary, rugose coral. We have placed C. savilli in the Family Codasteridae, although it has several morphological features that are unique when compared to other genera in the family and to other blastoid genera regardless of familial assignment.

scholarly journals Roholtiella, gen. nov. (Nostocales, Cyanobacteria)—a tapering and branching cyanobacteria of the family Nostocaceae

Phytotaxa ◽  
2015 ◽  
Vol 197 (2) ◽  
pp. 84 ◽  
Author(s):  
Markéta Bohunická ◽  
Nicole Pietrasiak ◽  
Jeffrey R. Johansen ◽  
Esther Berrendero Gómez ◽  
Tomáš Hauer ◽  
...  
Keyword(s):  
New Species ◽  
Cryptic Species ◽  
Morphological Features ◽  
The Other ◽  
Sister Taxon ◽  
The Family ◽  
Its Regions ◽  
In Series ◽  
Flanking Regions

A total of 16 strains phylogenetically placed within the Nostocaceae were found to possess morphological features of the Rivulariaceae and Tolypothrichaceae (tapering trichomes and single false branching, respectively) in addition to their typical Nostocacean features (production of arthrospores in series). These strains formed a strongly supported clade separate from other strains that are phylogenetically and morphologically close. We describe four new species within the genus Roholtiella gen. nov. The four species include three distinguishable morphotypes. Roholtiella mojaviensis and R. edaphica are morphologically distinct from each other and from the other two species, R. fluviatilis and R. bashkiriorum. Roholtiella fluviatilis and R. bashkiriorum are cryptic species with respect to each other. All four species are easily distinguished based on the sequence of the 16S-23S ITS regions, in particular the flanking regions to the conserved Box-B and V3 helices. The species are further established by the elevated p-distance between species that is much reduced among strains within the same species. Calochaete cimrmanii, a recently described tapering species from tropical biomes, is the most likely sister taxon to Roholtiella.

scholarly journals Adjektiva dalam Bahasa Maanyan (The Adjective in Maanyan Language)

JALABAHASA ◽  
2018 ◽  
Vol 14 (2) ◽  
pp. 52
Author(s):  
Kity Karenisa
Keyword(s):  
Noun Phrase ◽  
Morphological Characteristic ◽  
Native Speakers ◽  
Morphological Characteristics ◽  
Morphological Features ◽  
Austronesian Languages ◽  
Syntactic Behavior

Berdasarkan pengamatan terhadap adjektiva dalam bahasa Maanyan, terutama pada ciri morfologisnya, perilaku adjektiva dalam bahasa Maanyan berbeda dengan perilaku adjektiva bahasa Austronesia pada umumnya. Kategori sintaksis kalimat yang berbeda mensyaratkan bentuk adjektiva yang berbeda, yaitu dengan pemarkah adjektiva {ma-} ataupun tanpa pemarkah. Penelitian ini bertujuan untuk mengetahui ciri adjektiva dalam bahasa Maanyan berdasarkan ciri morfologis, perilaku sintaksis, dan perilaku semantisnya. Data dalam penelitian ini dikumpulkan oleh peneliti dari bahasa yang dikuasainya sebagai penutur asli bahasa Maanyan, kemudian dikonfirmasi dengan penutur asli lainnya. Berdasarkan analisis diperoleh simpulan bahwa adjektiva dalam bahasa Maanyan dapat dikenali dari ciri bentuk atau ciri morfologis yang berupa monomorfemis dan polimorfemis, dari perilaku sintaksis, yaitu sebagai atribut dalam frasa nomina, dan dari perilaku semantis dengan makna yang mengikutinya. Based on the observation on adjective in Maanyan language, especially in morphological features, adjective behavior in Maanyan language is different from the adjective behavior in other Austronesian languages in general. Different categories of syntactic sentences require different forms of adjectives: with the adjective marker {ma-} or without the marker. This study aims to determine the characteristics of adjectives in Maanyan language based on morphological characteristics, syntactic behavior, and semantic behavior. The data in this study were collected by researcher native speakers of Maanyan language and then confirmed to other native speakers. Based on the analysis, it can be concluded that the adjective in Maanyan language can be recognized by the morphological characteristic of monomorphemic and polymorphemic, from its syntactic behavior, ie as attributes in the noun phrase, and from its semantic behavior to the meaning that follows. 

scholarly journals Tranzycja uczniów z niepełnosprawnością intelektualną z edukacji na rynek pracy - perspektywa rodzica

2018 ◽  
pp. 47-76
Author(s):  
Wojciech Otrębski ◽  
Katarzyna Mariańczyk
Keyword(s):  
Intellectual Disability ◽  
Vocational Rehabilitation ◽  
Family Environment ◽  
Vocational Training ◽  
Vocational Schools ◽  
Teaching Staff ◽  
East Part ◽  
Vocational Orientation ◽  
The Family ◽  
Job Advertisements

The interactive model of vocational rehabilitation includes two key components: the rehabilitated individual and the vocational rehabilitation environment. The interaction of these two elements should contribute to the improvement of vocational competencies of people with disabilities[1]. Due to the fact that parents are considered as the second main contributors (just after teaching staff) of vocational training as well as life and vocational orientation of children and teenagers[2], the family environment can be treated as a significant part of the vocational rehabilitation of people with intellectual disability. Therefore, the aim of this study was to discover how parents of individuals with intellectual disability participate, if they do, in vocational training of their children.  Materials and Methods: The study was conducted among parents of special vocational schools graduates using the survey ASZ-S-R by W. Otrębski and K. Mariańczyk. The results are based on the answers of 71 parents/guardians of graduates of special vocational schools located in South-East part of Poland. Results: Nearly 88% of respondents declared that they supported the vocational preparation of their children by holding talks about various vocational activities. Circa 40% of them also provided help to their children with disabilities to find employment (e.g. by searching for job advertisements); nevertheless, over a quarter do not engage in such an activity at all. Active participation of parents of graduates with intellectual disability is necessary to prepare their children to undertake vocational activities.   [1] W. Otrębski, Interakcyjny model rehabilitacji osób z upośledzeniem umysłowym, Wydawnictwo KUL, Lublin, 2007, s. 56. [2] J. Stankaitytė, N. Janonytė, J. Muriniene, A. Paszkowska-Rogacz, Etapy rozwoju dziecka i wyboru kariery zawodowej, [w:] Moje dziecko wybiera karierę zawodową, red. A. Paszkowska-Rogacz, Społeczna Wyższa Szkoła Przedsiębiorczości, Łódź, 2008, s. 19-33.

A conspectus of Elaeocarpaceae in Papuasia.

Brunonia ◽  
1977 ◽  
Vol 1 (2) ◽  
pp. 131 ◽  
Author(s):  
MJE Coode
Keyword(s):  
New Taxa ◽  
Morphological Features ◽  
The Family ◽  
Specific Epithets

The results of a study of all genera in the family Elaeocarpaceae as found in Papuasia are presented. Keys to all accepted taxa are provided, many epithets are reduced to synonymy and an attempt is made to interpret the remaining 28 specific epithets that are inadequately described and whose types are lost or unavailable. The following new taxa are described and illustrated: Aceratium sinuatum, A. tomenrosum, Dubouzetia galorei, D. kairoi, Elaeocarpus badius, E. bakaianus, E, buderi, E. dolichostylus ssp. collinus, E. marafunganus, E. murukkai, E. neobritannicus, Sericolea calophylla ssp. grossiserrata, S. collinsii, S. pachyphylla, Sloanea pulchra ssp. morobensis, S. pulleniana, S. streimannii. Notes on morphological features of interest are given.

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