Temporal Patterns in the Abundance and Species Composition of Spiders on Host Plants of the Invasive Moth Epiphyas postvittana (Lepidoptera: Tortricidae)

2017 ◽  
Vol 46 (3) ◽  
pp. 502-510 ◽  
Author(s):  
Brian N. Hogg ◽  
Nicholas J. Mills ◽  
Kent M. Daane
Keyword(s):  
Species Composition ◽  
Host Plants ◽  
Temporal Patterns ◽  
Epiphyas Postvittana

scholarly journals Species composition of glass eels (Anguilla spp.) recruiting to the Palu River, Central Sulawesi

2018 ◽  
Author(s):  
Novalina Serdiati ◽  
Samliok Ndobe ◽  
Abigail Moore ◽  
Deddy Wahyudi
Keyword(s):  
Species Composition ◽  
Dna Analysis ◽  
Temporal Patterns ◽  
Clove Oil ◽  
Analysis Method ◽  
Substantial Variation ◽  
Anguilla Marmorata ◽  
Glass Eels ◽  
Central Sulawesi ◽  
Tropical Eel

Demand for tropical eel seed has been increased and many tropical eel populations are under pressure. To conserve eel biodiversity and manage eel populations sustainably, it is necessary to identify eel species and their recruitment patterns at regional and watershed scales. The research objective was to determine the species composition and temporal recruit-ment patterns of glass eels recruiting to Palu River in Central Sulawesi. Glass eels sampling were conducted in January-April 2009, May-November 2010 and April-December 2011. Identification under anaesthetic (15-17.5 ppm clove oil solution) was based mainly on the number of ano-dorsal vertebrae (ADV). Species composition was dominated by two commercially species, Anguilla marmorata and A. bicolor pacifica with substantial variation and no clear temporal patterns. Specimens of other species that important from conservation and biodiversity aspects were present at each month but cannot be accurately identified using the ADV method. DNA analysis method is required to identify these specimens.

scholarly journals Temporal patterns of species composition of siliceous phytoplankton flux in the Santa Barbara Basin

2007 ◽  
Vol 30 (3) ◽  
pp. 283-297 ◽  
Author(s):  
E. L. Venrick ◽  
C. B. Lange ◽  
F. M. H. Reid ◽  
E. P. Dever
Keyword(s):  
Species Composition ◽  
Temporal Patterns ◽  
Santa Barbara ◽  
Santa Barbara Basin

scholarly journals Understory host plant and insect gall diversity changes across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest

2017 ◽  
Vol 47 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Genimar Rebouças JULIÃO ◽  
Emmanuel Duarte ALMADA ◽  
Flávia Regina Capellotto COSTA ◽  
Marco Antônio Alves CARNEIRO ◽  
G. Wilson FERNANDES
Keyword(s):  
Water Stress ◽  
Species Composition ◽  
Host Plant ◽  
Host Plants ◽  
Water Status ◽  
Brazilian Amazon ◽  
Amazon Rainforest ◽  
Terra Firme ◽  
Plant Richness ◽  
Valley Slope

ABSTRACT Topographic gradients in terra firme forests are associated with pronounced changes in soil texture, soil nutrients and distance to the water-table, thereby creating different hydric and nutritional conditions for plants and their associated herbivore community. The aim of this study was to investigate galling species and host plant richness and gall species composition across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest. Nineteen 250 x 3 m plots were randomly sampled in the valley, slope, plateau-slope transition, and plateau habitats in terra firme forests. All individual dicotyledonous plants 1 to 3 meters high were examined for the presence of insect galls. Galling species and host plant richness differed significantly among the studied habitats and were higher in slope habitats (drier habitats), as expected. More humid areas (valleys) showed the lowest richness of galling species, and a lower number of understory host plants. PERMANOVA and PERMDISP results demonstrated that the gall species composition differed significantly in the valley, slope, plateau-slope transition, and plateau areas. However, these structural differences in species composition could be due to unequal dispersion of variability among forest habitats. Our data suggested that spatial heterogeneity, such as a mosaic of local water status and nutrient availability resulting from the topographic conditions, can affect host plants and their associated galling insects.

scholarly journals Parasitoids of leafrollers (LepidopteraTortricidae) from scrub vegetation near horticultural areas in Nelson

2015 ◽  
Vol 68 ◽  
pp. 193-196
Author(s):  
P.W. Shaw ◽  
D.R. Wallis
Keyword(s):  
Host Plants ◽  
Epiphyas Postvittana ◽  
Parasitoid Species ◽  
Lightbrown Apple Moth

Leafroller larvae and pupae were collected during timed searches in January and April 2013 from host plants at six scrub vegetation sites in two Nelson horticultural districts approximately 40 km apart The numbers of leafrollers and parasitoid species recovered were similar in both districts Most of the leafroller larvae collected were Epiphyas postvittana (Walker) (lightbrown apple moth LBAM) and most of these were found on gorse and broom In total 293 larvae and 11 pupae were reared successfully with 39 parasitism A wide diversity of parasitoids was recovered comprising 10 species from five families with Dolichogenidea tasmanica (Braconidae) the most common (80) The diversity of parasitoids and parasitism of leafrollers in unmanaged environments outside orchards may help to reduce leafroller pressure and the risk of fruit infestation in surrounding commercial orchards

scholarly journals Spatial and temporal patterns of ciliate species composition (Protozoa: Ciliophora) in the plankton of the Upper Paraná River floodplain

2009 ◽  
Vol 69 (2 suppl) ◽  
pp. 517-527 ◽  
Author(s):  
GM. Pauleto ◽  
LFM. Velho ◽  
PRB. Buosi ◽  
AFS. Brão ◽  
FA. Lansac-Tôha ◽  
...  
Keyword(s):  
Species Composition ◽  
Temporal Patterns ◽  
Flood Pulse ◽  
Paraná River ◽  
Spatial And Temporal Patterns ◽  
River Floodplain ◽  
Parana River ◽  
Ciliate Species ◽  
Paraná River Floodplain ◽  
Littoral Species

Spatial and temporal patterns of plankton ciliates species composition in the Paraná River floodplain were investigated. Samplings were carried out in twelve environments in two distinct hydrological periods (limnophase and potamophase). A total of 61 species of ciliates were recorded, and among them 21 are classified as pelagic while 40 are considered preferentially as littoral species. The registered species belong to eleven orders, and among them, Prostomatida was the most specious followed by Hymenostomatida and Peritrichida. The ciliate species composition was significantly distinct between periods, but not among environments. In this way, typically pelagic species characterized the ciliate community during the limnophase period, while the littoral species were predominant during the potamophase period. Our results strongly support the idea of the flood pulse as the main factor driving the composition pattern of the planktonic ciliates community in the Paraná River floodplain.

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