Brachyura (Crustacea, Decapoda) associated to Schizoporella unicornis (Bryozoa, Gymnolaemata) in Ubatuba bay (SP), Brazil

Abstract

ABSTRACT

Brachyuran and anomuran crabs associated with Schizoporella unicornis (Ectoprocta, Cheilostomata) from southeastern Brazil

“…Mantelatto and Souza-Carey (1998a) also reporting Pachycheles monilifer as the most abundant Anomuran associated with S.unicornis in the southeastern Brazilian coast (see Table II). On the other hand, unlike the finds of the present study, Pachygrapsus transversus was recognized by Mantelatto and Souza-Carey (1998b) as the most abundant Brachyuran in the S. unicornis colonies, as shown in Table II.…”

“…M. nodifrons may reach 130 mm CW (Williams 1984) (see Table III), and is a common inhabitant of intertidal rocky shores along the entire Brazilian coast (Melo 1996). Juveniles of M. nodifrons were reported occupying S. unicornis reefs by Mantelatto and Souza-Carey (1998b) and Morgado and Tanaka (2001). During its development, this crab can exploit different biogenic substrata on intertidal rocky shores, especially for food and refuge (see Fransozo et al 2000, Oshiro 1999.…”

Crustáceos decápodos associados às cordas de cultivo do mexilhão Perna perna (Linnaeus, 1758) (Mollusca, Bivalvia, Mytilidae) na Enseada da Armação do Itapocoroy, Penha - SC

“…Destas apenas três (Freitas 1997e Marenzi & Branco 2006), e duas (Leite 2007) espécies de decápodos foram registradas neste biótopo. Marenzi & Branco (2006) Mantelatto & Souza-Carey (1998) concluíram que o abrigo para caranguejos braquiúros disponibilizado pelo briozoário Schizoporella unicornis (Johnston, 1847) foi o principal recurso que atraiu estes organismos; recurso este que foi incrementado à medida que o substrato biológico foi crescendo em tamanho e complexidade. Além disso, Széchy et al (2001) ressaltaram que as espécies associadas aos mexilhões apresentam dimensões compatíveis ao espaço oferecido como abrigo entre as conchas: estas são de pequeno porte durante as fases iniciais do desenvolvimento juvenil do substrato, o que demonstra a importância do abrigo como recurso para estes animais.…”

Substrate preference by the porcelain crab Pachycheles monilifer (Crustacea, Anomura): the bryozoan Schizoporella errata or the polychaete Phragmatopoma caudata?

“…Petrolisthes cinctipes (Randall, 1840) and P. eriomerus Stimpson, 1871 by Jensen, 1989; Uca pugnax (Smith, 1870) by O'Connor and Van, 2006], light features of crevices, habitat structural characteristics, habitat-related chemical cues and avoidance of potential predators (see Montfrans et al, 2003 for last factors). The availability of food and the secure place for reproduction and development also influencethis preference (Mantelatto and Souza-Carrey, 1998).…”

“…In particular, Pachycheles monilifer (Dana, 1852), a common porcelain crab distributed on the Western Atlantic Ocean, from Florida (USA) to southern Brazil, and on Eastern Pacific (Ecuador and Peru) (Veloso and Melo, 1993;Rodríguez et al, 2005), has been recorded living under rocks (Melo, 1999), in biological substrates such as the bryozoans and polychaetes (Gore et al, 1978;Pinheiro et al, 1997;Mantelatto and Souza-Carrey, 1998;Hattori and Pinheiro, 2001) and associated with living mussels and the mussel farming ropes (Macedo et al, 2012). This small crab, which is coexistent with other porcellanid species, can be easily distinguished from the congeners by the disposition and pubescence of some characteristic tubercles in the chelipeds (Haig, 1960;Gore and Abele, 1976).…”