Data/hora: 06/06/2024 02:12:22

Provedor de dados: 	Iheringia Série Zoologia	
País: 	Brazil	
Título: 	Diversity and population characteristics of terrestrial isopods (Crustacea, Oniscidea) across three forest environments in southern Brazil	
Autores: 	Bugs,Priscila da Silva; Araujo,Paula Beatriz; Mendonça Júnior,Milton de Souza; Ott,Ricardo.	
Data: 	2014-09-01	
Ano: 	2014	
Palavras-chave: 	Abundance; Reproduction; Pinus sp; Plantation; Atlantoscia floridana; Balloniscus glaber.	
Resumo: 	Terrestrial isopods are important and dominant component of meso and macrodecomposer soil communities. The present study investigates the diversity and species composition of terrestrial isopods on three forests on the Serra Geral of the state of Rio Grande do Sul, Brazil. The area has two natural formations (Primary Woodland and Secondary Woodland) and one plantation of introduced Pinus. The pitfall traps operated from March 2001 to May 2002, with two summer periods and one winter. There were 14 sampling dates overall. Of the five species found: Alboscia silveirensis Araujo, 1999, Atlantoscia floridana (van Name, 1940), Benthana araucariana Araujo &amp;amp; Lopes, 2003 (Philoscidae), Balloniscus glaber Araujo &amp;amp; Zardo, 1995 (Balloniscidae) and Styloniscus otakensis (Chilton, 1901) (Styloniscidae); only A. floridana is abundant on all environments and B. glaber is nearly exclusive for the native forests. The obtained data made it possible to infer about population characteristics of this species. The Similarity Analysis showed a quantitative difference among the Secondary forest and Pinus plantation, but not a qualitative one. The operational sex ratio (OSR) analysis for A. floridana does not reveal significant differences in male and female proportions among environments. The reproductive period identified in the present study for A. floridana was from spring to autumn in the primary forest and Pinus plantation and during all year for the secondary forest. The OSR analysis for B. glaber reveals no significant differences in abundance between males and females for secondary forest, but the primary forest was a significant difference. The reproductive period for B. glaber extended from summer to autumn (for primary and secondary forest). This is the first record for Brazil of an established terrestrial isopod population in a Pinus sp. plantation area, evidenced by the presence of young, adults and ovigerous females, balanced sex ratio, expected fecundity and reproduction pattern, as compared to populations from native vegetation areas.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000300009	
Editor: 	Museu de Ciências Naturais	
Relação: 	10.1590/1678-476620141043334340	
Formato: 	text/html	
Fonte: 	Iheringia. Série Zoologia  v.104 n.3 2014	
Fonte: 	info:eu-repo/semantics/openAccess