Efeitos do caranguejo Pinnotheres ostreum em ostras Crassostrea rhizophorae

Abstract

IFlACIMA ANDRADE! NASCIMINTO I SOLANGI ANDFlADI PIAlIFlA I nnltuto di alologll, Unlvlr.ldldl Fldlrll di alhll, allvlClor, BA, Bl'lell SYNOPSlS Some btologtcal parameters 01 the oyster (Cru80strea rhizophorae;. dunng the ,pawning and po,t-spawning pertods. were analised in retation tg the inje~tatiOf1 by the pea crab (pinnotl,lerea oatreum). The biolot!cal_parame.tt?' conlidered were: me_ total weightJ wet ~nd gry meat wellht. and conditlon tndex. Uti/izing the X' test these parameters ano inle,tation by the pea crrzb were i/aown to De a'lOclated. The incidence 01 pea crrzbs WQS higher duríng the spawning períod than in the po,t-,pawning período reaching a maximum (20.3% Inleltation) in oy'terr wlth a IÍze 01 6 to 7 cm. The values 01 the condltlon Index and percent 01 mt4t (wet and dry weight) lor the,e oylten were

Ciclo reproductivo del ostión de manglar Crassostrea rhizophorae (Bivalvia: Ostreidae) en la Bahía de Camamu, Bahia, Brasil

“…El rendimiento de la carne, es un índice eco-fisiológico utilizado para evaluar la calidad de la carne y la productividad en cultivos de moluscos bivalvos (Rebelo et al 2005). Es un importante parámetro para la comercialización y aceptación del producto, ya que puede evidenciar una acumulación de reservas nutritivas para la reproducción (Ruiz et al 1969, Nascimento & Pereira 1980a), la presencia de parásitos en los tejidos (Nascimento & Pereira 1980b) y el efecto de las variaciones de las condiciones ambientales (Wakamatsu 1973, Prieto et al 1999, Christo 2006.…”

RECORD OF Ostrea puelchana D’ORBIGNY, 1842 (BIVALVIA: OSTREIDAE), AS NEW EPIBIONT IN Eriphia gonagra (FABRICIUS, 1781) (CRUSTACEA: ERIPHIIDAE) FROM NORTHEASTERN BRAZIL

“…The two morphotypes of O. puelchana were observed well cemented in epibranchial and antero-lateral regions (right side) of the capace of E. gonagra (Figure 2), covering about 12,3 % and 10,29 % respectively of its carapace surface. Up to date, the biological interactions between mollusks and crustaceans are widely observed in several groups, and in different ecological aspects, such as: endosymbiosis provided by pea crabs in a wider range of ostreid species (Baeza & Thiel, 2007;Baeza et al, 2013;Martinelli-Filho;Santos & Ribeiro, 2014;Hanke et al, 2015); ectosymbiosis as observed in the porcelain crab Porcellana sayana (Leach, 1820), which living in a wide range of gastropods (Rodríguez;Hernández & Felder, 2005); commensalism of Blepharipoda occidentalis Randall, 1840 in the bivalve Kurtiella pedroana (Dall, 1899) (Boyko & Mikkelsen, 2002); parasitism of Zaops ostreum (Say, 1817) in Crassostrea rhizophorae (Guilding, 1828) (Stauber, 1945;Nascimento & Pereira, 1980) and opportunistic epibiosis performed by O. puelchana in the swimming crab Callinectes exasperatus (Gerstaecker, 1856) (Lima et al, 2017). The association provided by ostreid species adhered in mobile crustaceans as observed in the crab species C. exasperatus and in present study on E. gonagra, can be favorable to protection of epibiont (oysters), due to the advantage of the escape from predators, and additionally, this relationship favors the oyster at different food offerings in different regions for the filtration of organic matters (Lima et al, 2017).…”