Araneofauna de pomares de laranja Valência nos Vales do Caí e Taquari, Rio Grande do Sul, Brasil

Ott, Ana Paula; Ott, Ricardo; Wolff, Vera Regina dos Santos

doi:10.1590/s0073-47212007000300017

Cited by 10 publications

(12 citation statements)

References 14 publications

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“…M. pallidus ha sido registrada en otros agroecosistemas sudamericanos, tal el caso de estudios realizados en cultivos de sorgo en Brasil donde fue la especie más abundante (25.6%) (Campos et al 1999). Otros estudios realizados en arroz y cítricos en Brasil y cacao en Méjico muestran un predominio de araneidos pero también se encuentran registros de oxyópidos y tomísidos pero en menor porcentaje (Ott et al 2007, Pérez de la Cruz et al 2007, Rodrigues et al 2008.…”

Section: Discussionunclassified

Comunidad de arañas (Arachnida, Araneae) del cultivo de alfalfa (Medicago sativa) en Buenos Aires, Argentina

Armendano¹,

González²

2009

RBT

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Spider community (Arachnida, Araneae) of alfalfa crops (Medicago sativa) in Buenos Aires, Argentina. Over the last decades there has been an increasing interest in the use of natural enemies to control pest insects, including spiders. We studied a spider community in Argentina by sampling every two weeks during 2004-2006 in one-hectare lots. Soil stratum spiders were collected using nets and pitfall traps. A total of 6229 specimens were collected (15 families and 50 species). Seven families were found in the herbal stratum, the most abundant were Thomisidae (n=2012, 32.30%), Araneidae (n=1516, 24.33%) and Oxyopidae (n=604, 9.70%). The soil had 14 families, mainly: Lycosidae (n=629, 10.10%) and Linyphiidae (n=427, 6.85%). Hunting spiders predominated: ambushers (32.99 %); stalkers (11.77%) and ground-runners (10.84%) were less common. The most abundant web building spiders were the orb weavers (27.56%). The diversity indexes were: H´=2.97, Dsp=0.11 and J=0.79, evidencing a moderately diverse spider community with predominance of Misumenops pallidus, Oxyopes salticus, Lycosa poliostoma and L. erythrognatha. The spiders were present throughout the phenological development of the crop with abundance peaks in spring and summer. Rev. Biol. Trop. 58 (2): 757-767. Epub 2010 June 02.

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Section: Discussionunclassified

Comunidad de arañas (Arachnida, Araneae) del cultivo de alfalfa (Medicago sativa) en Buenos Aires, Argentina

Armendano¹,

González²

2009

RBT

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“…Specifically in South Brazil, some attempts were done in order to compare spider diversity patterns between agroecosystems and adjacent native ecosystems, such as the studies of Baldissera et al (2008) in tree plantations, including pine, and native Araucaria forest, Rodrigues et al (2009) in rice field, grassland and native forest, and Rodrigues et al (2010) in Eucalyptus plantations and natural grasslands. Other studies in agroecosystems in South Brazil describe spider assemblages, for example, in olive groves (Ricalde et al, 2016), corn plantations (Da Silva et al, 2014), citrus groves (Ott et al, 2007) and irrigated rice (Rodrigues et al, 2008). Here we also expect to contribute with a very first view of the ground spider assemblages inhabiting pine plantations in the state of Rio Grande do Sul.…”

mentioning

confidence: 54%

“…Spiders are predatory arthropods widely distributed across terrestrial ecosystems and agroecosystems (Ott et al, 2007;Corcuera et al, 2015;Marín et al, 2016;Ricalde et al, 2016), being largely infl uenced by prey availability and habitat structure (Halaj et al, 1998). Spiders can display a range of diff erent foraging strategies (Cardoso et al, 2011).…”

mentioning

confidence: 99%

Spider community responds to litter complexity: insights from a small-scale experiment in an exotic pine stand

Podgaiski

Rodrigues

2017

Iheringia, Sér. Zool.

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ABSTRACT. Conservation of biodiversity in agroecosystems is an urgent need, and a suitable approach to maximize animal biodiversity and their services is the restoration of habitat heterogeneity. Here we investigated the value of increasing litter complexity in tree plantations of exotic pine for ground spiders. We hypothesized that increasing the litter complexity of these systems, as it would be the case in ecologically designed plantations, would increase spider aggregations. We performed a small-scale litter manipulation experiment within an exotic pine stand in the municipality of Minas do Leão, Rio Grande do Sul, Brazil, and compared spider diversity in simple (only pine needles) and complex substrates (with the addition of diverse native broadleaves). We found 1,110 spiders, 19 families and 32 morphospecies. The most abundant families were Linyphiidae, Theridiidae and Salticidade, and the dominant morphospecies were Thymoites sp. 2 and Lygarina sp. Web-building spiders represented 61% of total spider abundance, and 17 species, while hunting spiders, 49% and 15 species. As expected, densities of spider individuals and species from both web-building and hunting spiders were higher in complex litter substrate. Potential preys (Collembola) also responded positively to the treatment, and had infl uence of spider community patterns. Our results suggest that ensuring some degree of plant and litter diversity within pine stands (e.g. understory establishment) might foster spider aggregations and possibly help to conserve their diversity at local-scales. KEYWORDS.Habitat complexity, habitat selection, species diversity, foraging strategy. RESUMO.Comunidade de aranhas responde a complexidade da serapilheira: percepções de um experimento de pequena escala em um talhão de pinus exótico. A conservação da biodiversidade em agroecossistemas é uma necessidade urgente, e uma abordagem adequada a maximizar a biodiversidade animal e seus serviços é a restauração da heterogeneidade de habitats. Aqui nós investigamos o valor do aumento da complexidade da serapilheira em plantações exóticas de pinus para aranhas de solo. Nossa hipótese é que aumentando a complexidade da serapilheira nestes sistemas, como seria o caso em plantações com design ecológico, as agregações de aranhas aumentariam. Nós realizamos uma manipulação experimental de pequena escala em uma plantação exótica de pinus no município de Minas do Leão, Rio Grande do Sul, e comparamos a diversidade de aranhas em substrato simples (somente acículas de pinus) e complexo (com adição de folhas nativas diversas). Nós encontramos 1.110 aranhas, 19 famílias e 32 morfoespécies. As famílias mais abundantes foram Linyphiidae, Theridiidae e Salticidade, e as morfoespécies dominantes foram Thymoites sp. 2 e Lygarina sp. Aranhas de teia representaram 61% da abundância total de aranhas e 17 espécies, enquanto aranhas caçadoras, 49% e 15 espécies. Como esperado, densidades de indivíduos e de espécies de ambas construtoras de teia e caçadoras foram maiores em substrato complex...

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“…Another new record from the Linyphiidae family is Dubiaranea difficilis , which builds sheet webs amongst herbaceous vegetation a few centimetres above the soil, this species having been registered for mountain forests and rainforests in Argentina (Rubio et al 2010). Leucauge volupis builds horizontal orb webs in the lower strata of the forest and has been reported from southern Brazil (Buckup et al 2010, Ott et al 2007). Nothing is known about Mimetus melanoleucus natural history also recorded from southern Brazil and northern Argentina (Grismado et al 2011, Mello-Leitão 1929).…”

Section: Discussionmentioning

confidence: 89%

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

Laborda¹,

de²,

Pérez‐Miles³

et al. 2018

BDJ

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Biological corridors are connections which link habitats in a regional scale, allowing the gene flow between populations. The Uruguay River comprises riverside and insular riparian forests along subtropical to temperate zones passing through different biogeographic provinces. The aim of this study was to characterise the spider fauna from the Uruguay River islands highlighting their connection role for the spider community of riparian forest. Spiders were studied from surveys in a fluvial island of the southern course of the river with nine campaigns being carried out from September 2007 to September 2009. Three complementary collecting methods were used: G-Vac, night hand collecting and pitfall traps. A total of 58 samples were taken in each campaign. A total of 33 families, 145 species/morphospecies and 8 guilds were registered. Theridiidae and space web weavers showed the highest abundance and species richness. Web weavers were predominant in the spider community evidencing the importance of the forest vegetation heterogeneity in spider diversity. Fifteen species have been recorded for the first time for Uruguay. Additional data of previous surveys in the northern islands of the river were analysed and compared. Several species confirm the role of the Uruguay River as a biological corridor from the upper to lower course of the river. The riparian forests from the islands constitute a southernmost intromission of Paranaense biota between Chaco and Pampa regions along the river. The results obtained are an important input for the conservation of these areas. Knowing the biodiversity, as well as its dynamics and the flow of biota that exists in these environments, would allow planning the management from a regional point of view.

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Araneofauna de pomares de laranja Valência nos Vales do Caí e Taquari, Rio Grande do Sul, Brasil

Cited by 10 publications

References 14 publications

Comunidad de arañas (Arachnida, Araneae) del cultivo de alfalfa (Medicago sativa) en Buenos Aires, Argentina

Comunidad de arañas (Arachnida, Araneae) del cultivo de alfalfa (Medicago sativa) en Buenos Aires, Argentina

Spider community responds to litter complexity: insights from a small-scale experiment in an exotic pine stand

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

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