Metabolic responses of the intertidal mussel Perumytilus purpuratus (Lamarck) in emersion and immersion

Physiological adaptations to high intertidal life involve improved water conservation abilities and metabolic rate depression in Littorina saxatilis

“…As a result, in order to save water, many intertidal species may become partially anaerobic during air exposure at low tide (Shick et al 1988, McMahon 1990. In fact, accumulation of anaerobic end products during prolonged air exposure was found in L. saxatilis in this study and has already been reported for other intertidal and subtidal gastropods (Wieser 1980, Gäde et al 1984, Donovan et al 1999) and bivalves (Vial et al 1992, Simpendörfer et al 1995. The onset of anaerobiosis during prolonged air exposure has also been detected in the blue mussel Mytilus edulis by means of direct calorimetry (Shick et al 1983(Shick et al , 1986.…”

“…However, as desiccation progresses, animals may reduce oxygen uptake, in order to minimise evaporative water loss, and switch to anaerobiosis during prolonged air exposure (Houlihan 1979, Wieser 1980, Houlihan et al 1981, Simpendörfer et al 1995. Indeed, it has been shown that many (but not all) intertidal species accumulate anaerobic end products during prolonged air exposure (Wieser 1980, Vial et al 1992, Grieshaber et al 1994, Simpendörfer et al 1995. Moreover, high-shore species or populations are usually characterised by a higher anaerobic potential compared to their low-shore or subtidal counterparts (de Vooys 1980, Bowen 1984, Sukhotin & Pörtner 1999, Sokolova & Pörtner 2001.…”

Sedentary prey facing an acute predation risk: testing the hypothesis of inducible metabolite emission suppression in zebra mussels, Dreissena polymorpha

“…If the mechanisms predicted by the HIMES actually occur, this would help explain some unexpected patterns that have been reported in earlier studies on different species of bivalves. In marine bivalves, the presence of predation cues was found to reduce byssus production and mobility in Hormomya mutabilis (Ishida & Iwasaki, 2003), food intake in Mercenaria mercenaria (Smee & Weissburg, 2006) and respiration rates in Perumytilus purpuratus (Vial et al, 1992;Lopez et al, 1995). In zebra mussels, cues from injured conspecifics have been found to reduce mobility (Toomey et al, 2002;Czarnoleski et al, 2010b), clearance rates (Naddafi et al, 2007;Naddafi & Rudstam, 2014) and attachment strength (Czarnoleski et al, 2010b(Czarnoleski et al, , 2011, and to bias filter-feeding towards easy-to-digest foods (Naddafi et al, 2007).…”

Cues from the predator crabThalamita danaefed different prey can affect scope for growth in the prey musselPerna viridis

“…Responses induced include behavioural (Reimer and Tedengren 1997;Coˆte´and Jelnikar 1999;Nicastro et al 2007;Shin et al 2008Leonard et al 1999;Smith and Jennings 2000;Caro and Castilla 2004;Cheung et al 2004aCheung et al , 2004bCheung et al , 2006Cheung et al , 2009Farell and Crowe 2007;Freeman 2007) and physiological (Doering 1982;Vial et al 1992;Reimer et al 1995). Anti-predator responses, such as the enhancement of byssus production, were considered energetically costly as it accounts for 3-10% of annual production in the green-lipped mussel Perna viridis (Cheung 1991) and about 15% of total body energy in the ribbed mussel Aulacomya ater (Griffiths and King 1979).…”