Estudos sobre Difflugia lobostoma Leidy (Protista, Rhizopoda, Testacealobosea)

Abstract

ABSTRACT. SruDLES ABOUT DIFFLUG/A WBOSTOM.J LEIDY (PROTISTA, RHIZOPODA, TESTACEALOBOSEA). This paper repor!s feeding habitats, mos! commom test constitution, and growing curvature obtained under cultivation conditions, and lhe knowing distribution and most commom DifJlugia lobostoma.KEYWORDS. DifJlugia lobostoma, cultivation, growing curvature, Protista.Atualmente DifJlugia lobostoma é certamente um dos testáceos mais conhecidos em todo o mundo (PROWAZEK 1910;RUA 1912;PINTO 1925; GAUTIERLrEvRE & THOMAS 1958;THOMAS 1959; DroNI 1970; VUCETICH 1970 VUCETICH , 1972 VUCETICH , 1973a VUCETICH ,b, 1976 VUCETICH ,1978GREEN 1975;OGDEN & HEDLEY 1980;CHARDEZ 1967 CHARDEZ , 1975 CHARDEZ , 1987 CHARDEZ ,1990SABRI 1988;CHARDEZ et a!. 1989; TORRES & JEBRAM 1994), apresentando uma testa aglutinada de partículas inorgânicas sobre em substrato orgânico. GAUTIER-LrEvRE & THOMAS (1958) chegam a afirmar que este protista é cosmopolita.Dos trabalhos anteriormente citados, a grandc maioria é de caráter sistemá-tico, como CHARDEZ (1987) que cita três variedades raras ocorrentes na Bélgica porém, os que apresentam uma outra conotação, como CHARDEZ et a!. (1989), que apresenta um aspecto limnológico e SABRl (1988) que faz um estudo ecológico.A importância desta espécie, do ponto de vista sistemático e especialmente ecológico, representa o objetivo e a justificativa para a realização de um estudo específico a respeito da mesma.

Local factors affecting the testate amoeba community (Protozoa: Arcellinida; Euglyphida) in a neotropical floodplain

“…It favours the input of organisms and increases diversity (Velho et al, 2004;Alves et al, 2005). One example of this was the temperature decrease during this period, which possibly resulted in the decreased metabolic rates of testate amoebae, and consequently, also caused the low feed rates in contrast to the high water period (Torres, 1996).…”

Testate amoebae (Arcellinida and Euglyphida) from Pantanal dos Marimbús, Chapada Diamantina, Bahia state, Brazil, including new occurrences

“…The species distributions were determined using available references for each state: Acre State (Araújo 2019), Amapá State ( Vieira 2017), Amazonas (Arrieira et al 2016;Arrieira et al 2017;Reczuga et al 2015), Bahia (Cunha 1916;Neumann-Leitão and Nogueira-Paranhos 1987;Silva et al 2009;Cruz 2012;Araújo and Nogueira 2016;Silva 2016;Silva et al 2020), Ceará (Cunha 1913), Goiás (Lansac-Tôha et al 2000bArrieira et al 2017), Maranhão (Picapedra et al 2017), Mato Grosso (Hardoim andHeckman 1996;Missawa 2000;Oliveira and Hardoim 2010;Arrieira et al 2017), Mato Grosso do Sul (Torres 1996;Velho et al , 1999Alves et al 2007Alves et al , 2008, Minas Gerais (Dabés 1995;Dabés and Velho 2001;Souza 2005;López 2009), Pará Matsumura-Tundisi et al 2015;Vieira 2017;Gomes 2020), Paraná (Velho et al , 1999Alves et al 2007Alves et al , 2008Lansac-Tôha et al 2014;Arrieira et al 2017), Pernambuco (Neumann--Leitão andNogueira-Paranhos 1987), Piauí (Cunha 1916;Picapedra et al 2017), Rio de Janeiro (Wailes 1913;…”

Effect of slackwater areas on the establishment of plankton communities (testate amoebae and rotifers) in a large river in the semi-arid region (Northeastern Brazil)

“…Testate amoebae were also associated with higher temperature and pH values. Possibly, a decrease of temperature during the low water period possibly resulted in decreased metabolic rates of testate amoebae and consequent low feed rates in contrast to the high water period (Torres, 1996;Arrieira et al, 2015). In turn, a greater amount of organic matter was loaded into the river bed with floods.…”