scholarly journals Species composition diversity of aquatic insects in the Binh Hung Hoa biological pond system

2018 ◽  
Vol 1 (6) ◽  
pp. 117-126
Author(s):  
Tho Van Le ◽  
Dang Doan Phan ◽  
My Ngoc Diem Tran ◽  
Huy Duc Hoang
Keyword(s):  
Species Composition ◽  
Biological System ◽  
Aquatic Insects ◽  
Rainy Season ◽  
Dry Season ◽  
High Density ◽  
The Other ◽  
High Similarity ◽  
Low Level ◽  
Pond System

This study surveyed and analyzed samples of aquatic insects at 10 pondst Binh Hung Hoa biological system on March and August in 2015. The results recorded 31 species belonging to 24 families, 6 orders, include Coleoptera, Diptera, Odonata, Hemiptera, Ephemeroptera and Trichoptera. In particular, the larvae of theory derdiptera had the best diversity of composition, wise distribution and high density. However, the larvae of t h e order ephemeroptera and order trichoptera had the least diversity and low level of density and distribution at maturation ponds. Among ponds, the diversity and density of aerobic pond and sedimentation pond were high while the maturation ponds were low. The composition of aquatic insects had high similarity in the same function ponds and low similarity in the different function ponds. The species composition diversity and abundance of aquatic insects were the highest in the sedimentation pond and lowest in the other ponds. In the rainy season, the species composition diversity of aquatic insects were higher than those in the dry season.

scholarly journals Biology of the Wild SilkmothAnaphe panda(Boisduval) in the Kakamega Forest of Western Kenya

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
N. Mbahin ◽  
S. K. Raina ◽  
E. N. Kioko ◽  
J. M. Mueke
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Rainy Season ◽  
Dry Season ◽  
Developmental Period ◽  
The Other ◽  
Western Kenya ◽  
Kakamega Forest ◽  
Pupal Period ◽  
Indigenous Forest

A study on the life cycle of the silkmothAnaphe panda(Boisduval) was conducted in two different habitats of the Kakamega Forest in western Kenya: Ikuywa, an indigenous forest, and Isecheno, a mixed indigenous forest. Eggs were laid in clusters, and the incubation period ranged from 40 to 45 days. Larvae fed onBridelia micrantha(Hochst) and passed through seven instars. The developmental period took between 83 to 86 days in the dry season and 112 to118 days in the rainy season. The pupal period ranged between 158 and 178 days in the rainy season and, on the other hand, between 107 and 138 days in the dry season. But the later caught up in development with those that formed earlier. Moths emerged from mid-October until mid-May. Longevity of adultAnaphe pandamoths took between 4 and 6 days, but generally females seemed to live longer than males. The moth also seems to have higher lifespan in the indigenous forest compared to the mixed indigenous forest.

scholarly journals Diversity and habitat preference of aquatic insects along the longitudinal gradient of the Macaé River basin, Rio de Janeiro, Brazil

2001 ◽  
Vol 61 (2) ◽  
pp. 249-258 ◽  
Author(s):  
D. F. BAPTISTA ◽  
D. F. BUSS ◽  
L. F. M. DORVILLÉ ◽  
J. L. NESSIMIAN
Keyword(s):  
River Basin ◽  
Aquatic Insects ◽  
Habitat Preference ◽  
Rainy Season ◽  
Rio De Janeiro ◽  
Dry Season ◽  
Longitudinal Gradient ◽  
Order Stream ◽  
Surber Sampler ◽  
Janeiro State

Diversity and habitat preference of macroinvertebrates were studied in Macaé River basin, Rio de Janeiro State, Brazil, along its longitudinal gradient. We selected stream reaches corresponding to 1st, 2nd, 4th, 5th and 6th orders. A Surber sampler was used to collect four macroinvertebrates samples of each substrate (sand, litter in pool areas, stones, and litter in riffle areas) during the three sampling periods, defined based on the rain regime: April (end of the rainy season), July (dry season), and October (beginning of the rainy season). We identified 46,431 specimens corresponding to 117 taxa. Analysis of diversity numbers (both for family or genus level) indicated that all insect taxonomic orders had higher numbers on 2nd order stream reach, except for Ephemeroptera, on 4th order. However when considering morph-species taxonomic level, the higher diversity number occurred on 4th order stream. The highest richness and diversity numbers were found at the dry season. Considering habitat preference, both litter in pool areas and litter in riffle areas had the highest faunal richness.

scholarly journals Insect assemblage associated with the polypore Fomitopsis pinicola: a comparison across Fennoscandia

2004 ◽  
Vol 15 (2) ◽  
Author(s):  
Atte Komonen ◽  
Mats Jonsell ◽  
Bjørn Økland ◽  
Anne Sverdrup-Thygeson ◽  
Karl Thunes
Keyword(s):  
Species Composition ◽  
Relative Abundance ◽  
Climatic Factors ◽  
Spatial Scales ◽  
The Other ◽  
Fruiting Bodies ◽  
High Similarity ◽  
Southern Sweden ◽  
Fomitopsis Pinicola ◽  
Insect Assemblage

We compiled the data on the insect assemblage occurring within the polypore Fomitopsis pinicola from six regions in Finland, Sweden and Norway. The species composition and diversity of the primary fungivorous beetles (Cisidae and Anobidae) were similar across Fennoscandia. The beetles Cis glabratus Mellié (Cisidae) and C. quadridens Mellié were the most frequent species occurring in 70% and 23% of the fruiting bodies on average. Sulcacis fronticornis (Panzer) and Ennearthron cornutum (Gyllenhal) were relatively common in southern Sweden, while absent from the study regions in Norway and Finland. Similarly, Cis bidentatus (Olivier) and Cis dentatus Mellié were rather common inNorway, but almost absent from the Finnish samples. Species relative abundances in the six study regions exhibit more variation, which to some extent corresponds the biogeographical zones. Our results on the high similarity in species composition indicate deterministic nature of the F. pinicola-associated insect assemblage over large spatial scales. On the other hand, climatic factors probably have an impact on the relative abundance of species.

scholarly journals Artrópodos componentes de la dieta de guajolotes de traspatio en el estado de Michoacán, México

2011 ◽  
Vol 27 (3) ◽  
Author(s):  
Fátima Tobajas-Andrés ◽  
Aureliano Juárez-Caratachea ◽  
Samuel Pineda ◽  
José Isaac Figueroa
Keyword(s):  
Rainy Season ◽  
Dry Season ◽  
The Other ◽  
Immature Stages ◽  
The Common ◽  
Physiographic Regions

This note presents the arthropods as part of the diet of creole turkeys reared in backyards. Fifty turkey crops collected from five physiographic regions of Michoacan were examinated; half of them collected during rainy season and the other half during dry season. Arthropods were found only in turkey crops obtained in rainy season, being adult and immature stages of insects (Hymenoptera, Hemiptera, Coleoptera, Lepidoptera) and myriapods (Diplopoda) the common groups component of the diet of backyard-reared creole turkeys.

scholarly journals Productivity and nutritional value of elephant grass BRS Canará forage

2019 ◽  
Vol 40 (6) ◽  
pp. 2705
Author(s):  
Eduardo André Ferreira ◽  
Joadil Gonçalves de Abreu ◽  
Junio Cesar Martinez ◽  
Ricardo Santos Silva Amorim ◽  
Arthur Behling Neto ◽  
...  
Keyword(s):  
Rainy Season ◽  
Linear Response ◽  
Leaf Blade ◽  
Dry Season ◽  
The Other ◽  
Chemical Characteristics ◽  
Elephant Grass ◽  
Insoluble Protein ◽  
Forage Production ◽  
Quadratic Response

The goal was to determine the ideal cutting age of elephant grass BRS Canará for forage production in the dry and rainy seasons. The experimental design comprised randomized blocks, with five treatments (42, 56, 70, 84, and 98 days in the dry season and 42, 60, 76, 91, and 105 days of regrowth in the rainy season) and four replications each. Agronomic, morphological, and chemical characteristics were evaluated. In the dry season, there was a significant quadratic response for plant height and leaf blade length. For the other characteristics, a significant linear response was observed, except stem diameter. In the rainy season, a quadratic response for the leaf blade length, leaf blade width, and leaf:stem ratio was observed. For the other characteristics, there was a significant linear effect, except for the percentage of dead material. In the dry season, a verified linear response was observed for the chemical characteristics, except neutral detergent insoluble protein. In the rainy season, a linear response was verified for all evaluated characteristics, except acid detergent insoluble protein. Elephant grass BRS Canará for forage production should be cut between 70 and 85 days in the dry season and between 60 and 70 days of regrowth in the rainy season.

scholarly journals Temporal variation in the phytoplankton community of Acapulco Bay, Mexico

2012 ◽  
Vol 3 (1) ◽  
pp. 4 ◽  
Author(s):  
Agustín A. Rojas-Herrera ◽  
Juan Violante Gonzalez ◽  
Sergio García-Ibáñez ◽  
Víctor M.G. Sevilla-Torres ◽  
Jaime S. Gil-Guerrero ◽  
...  
Keyword(s):  
Species Composition ◽  
Temporal Variation ◽  
Rainy Season ◽  
Phytoplankton Community ◽  
Species Abundance ◽  
Sampling Period ◽  
Dry Season ◽  
Nutrient Concentrations ◽  
Diatom Species ◽  
Oceanic Environments

<p>Species composition and abundance of the phytoplankton community in Acapulco Bay, Mexico, were studied from May to December 2009. Samples were collected at 5 stations (4 coastal and 1 oceanic) at 3 depths (1, 5 and 10 m). Eighty-seven species were identified: 54 dinoflagellates, 32 diatoms and 1 silicoflagellate. The community was structured mainly by adiaphoric species, that is, species adapted to both neritic and oceanic environments. Species abundance and composition varied significantly during the sampling period due to increased nutrient concentrations in the rainy season. Dinoflagellate species were more abundant during the dry season, and diatom species dominated numerically during the rainy season.</p>

scholarly journals Species composition and risk of transmission of Aedes-borne arboviruses around some Yellow hotspot areas in Northern Ghana

2020 ◽  
Author(s):  
Joannitta Joannides ◽  
Mawuli Dzodzomenyo ◽  
Faustus Azerigyik ◽  
Eudocia Esinam Agbosu ◽  
Deborah Pratt ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Species Composition ◽  
Yellow Fever ◽  
Rainy Season ◽  
Dry Season ◽  
Northern Ghana ◽  
African Countries ◽  
Breeding Sites ◽  
Subspecies Level ◽  
Game Reserve

AbstractAedes-borne viral diseases mainly Yellow Fever (YF), Dengue (DEN), Zika (ZIK) and Chikungunya (CHK) have contributed to many deaths’ in the world especially in Africa. There have been major outbreaks of these diseases in West Africa. YF outbreaks have occurred in Ghana. Although Ghana has not recorded any outbreak of DEN, ZIK and CHK, the risk is high due to its proximity to West African countries where outbreaks have been recently been recorded. This study assessed the risk of transmission of Yellow fever (YFV), Dengue (DENV), Chikungunya (CHKV) and Zika (ZIKV) viruses in Larabanga and Mole Game Reserve areas in Northern Ghana. The immature and adult stages of Aedes mosquitoes were collected from Larabanga and Mole Game Reserve area. There was a significant (P>0.001) number of mosquitoes collected during the rainy season than the dry season. A total of 1,930 Aedes mosquitoes were collected during the rainy season and morphologically identified. Of these, 1,915 (99.22%) were Aedes aegypti and 15 (0.22%) were Aedes vittatus. During the dry season, 27 Aedes aegypti mosquitoes were collected. A total of 415 Ae. aegypti mosquitoes were molecularly identified to subspecies level of which Aedes (Ae) aegypti aegypti was the predominant subspecies. Both Ae. aegypti aegypti and Ae aegypti formosus exist in sympatry in the area. All Aedes pools (75) were negative for DENV, ZIKV and CHKV when examined by RT-PCR. Three Larval indices namely House Index, HI (percentage of houses positive for Aedes larvae or pupae), Container Index, CI (the percentage of containers positive for Aedes larvae or pupae) and Breteau Index, BI (the number of positive containers (with larvae and/or pupae per 100 inspected houses) were assessed as a measure for risk of transmission. The HI, CI and BI for both sites were as follows; Mole game reserve (HI, 42.1%, CI, 23.5% and BI, 100 for rainy season and 0 for all indices for dry season) and Larabanga (39%, 15.5% and 61 for rainy season and 2.3%, 1.3% and 2.3 for dry season). The spatial distribution of Aedes breeding sites in both areas indicated that Aedes larvae were breeding in areas with close proximity to humans. Lorry tires were the main source of Aedes larvae in all the study areas. Information about the species composition and the potential role of Aedes mosquitoes in future outbreaks of the diseases that they transmit is needed to design efficient surveillance and vector control tools.

scholarly journals Mesostigmatid mite (Acari: Mesostigmata) diversity and abundance in two sites in Pedregal de San Ángel Ecological Reserve, Distrito Federal, México*

Zoosymposia ◽  
2011 ◽  
Vol 6 (1) ◽  
pp. 255-259
Author(s):  
DANIELA PÉREZ-VELÁZQUEZ ◽  
GABRIELA CASTAÑO-MENESES ◽  
ALICIA CALLEJAS-CHAVERO ◽  
JOSÉ G. PALACIOS-VARGAS
Keyword(s):  
Species Composition ◽  
Mexico City ◽  
Similarity Coefficient ◽  
Dry Season ◽  
The Other ◽  
Shannon Diversity ◽  
Open Site ◽  
Ecological Reserve ◽  
Distrito Federal ◽  
Dry Seasons

The Pedregal de San Ángel Ecological Reserve (REPSA) is located in the central campus of the Universidad Nacional Autónoma de México (UNAM), in México City. Diversity and abundance of edaphic mites of the order Mesostigmata were estimated in two sites of REPSA. One site had scanty vegetation, due to human alterations, and was designated as “open site” (O), whereas the other had less altered, denser vegetation, being designated as “closed site” (C). Samples of soil and litter collected during the rainy and dry seasons of 2008 were processed for the extraction of mites of that group, which were then mounted and quantified by morphospecies. Mite abundance was much higher in site O, but the number of morphospecies was about the same in both sites. The same mite families were found in both sites. For each season and for both seasons considered together, Shannon diversity and Pielou´s evenness indexes were significantly higher in site C. Sörensen similarity coefficient between sites was high in both seasons, but higher in the dry season; considering both seasons together, similarity coefficient between sites was 94%. This indicates that anthropogenic alteration of the vegetation at REPSA, reducing the height of the vegetation and turning it less dense, was not sufficient to cause major alterations in Mesostigmata species composition.

PRELIMINARY RESULTS ON SPECIES COMPOSITION OF AQUATIC INSECTS IN DAI DINH TOWN, TAM DAO DISTRICT, VINH PHUC PROVINCE

2020 ◽  
Vol 65 (10) ◽  
pp. 173-179
Author(s):  
Hieu Nguyen Van
Keyword(s):  
Quantitative Analysis ◽  
Species Composition ◽  
Preliminary Data ◽  
Aquatic Insects ◽  
Rainy Season ◽  
Field Survey ◽  
Aquatic Insect ◽  
Mesh Size ◽  
Functional Feeding Groups ◽  
Species Number

In this study, specimens were collected at 5 different sites. The aquatic insects were collected both quantitatively by Surber net (size 50 cm × 50 cm, mesh size 0.2 mm) and qualitatively by hand net and pond net. A field survey was conducted in December 2019 (dry season) and in June 2020 (rainy season). The study aims to show the preliminary data on faunas and communities of aquatic insects in Dai Dinh town, Tam Dao district, Vinh Phuc province. As a result, a total of 91 aquatic insect species belonging to 76 genera, 44 families, and 9 orders were recognized. Among these, the order Ephemeroptera had the highest species number with 32 species; followed by order Trichoptera with 18 species; order Odonata with 16 species; order Coleoptera with 8 species; order Hemiptera and Diptera with 6 species, each; order Plecoptera with 3 species. Order Lepidoptera and Megaloptera had the lowest of species number, represented by 1 species for each order. Besides, the quantitative analysis results and the functional feeding groups were provided in this study.

scholarly journals Cambios en composición y abundancia de califóridos de interés forense en Bogotá

2014 ◽  
Vol 20 (1) ◽  
pp. 17 ◽  
Author(s):  
Misael López-Cepeda ◽  
Giovanny Fagua
Keyword(s):  
Species Composition ◽  
Rainy Season ◽  
Dry Season ◽  
Lucilia Sericata ◽  
Calliphora Vicina ◽  
Post Mortem ◽  
Trapping Method ◽  
Sweep Net

Calliphorids are the first arthropods to colonize cadavers, their composition and abundance vary according to location. They are used to estimate post-mortem intervals and surmise the relocation of corpses; making the identification of these local variations are key in detecting the relocation of a body. We assessed these blowfly variations in 11 sites in Bogotá. A pre-sampling (dry season) was conducted to select a trapping method and sampling sites; the formal sampling (rainy season) was conducted using a directed sweep net. We identified the following species: Lucilia sericata, Roraimomusca roraima, Compsomyiops verena, Calliphora nigribasis, Calliphora vicina and Sarconesiopsis magellanica </em>and compared their richness, diversity, dominance and composition for each site. The highest richness was found in Chico-Lago (Chico) while the lowest was Alcazares (Barrios Unidos). Bolivia (Engativá) was the most diverse and 20 de Julio (San Cristobal) the least; dominance was higher in 20 de Julio and lower in Apogeo (Bosa). Species’ composition and abundance varied between sites; this may be used as evidence to support cases in Bogotá in which cadavers have been relocated.

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