The primary determinants of muscle force throughout a shortening-lengthening cycle, and therefore of the net work done during the cycle, are (1) the shortening or lengthening velocity of the muscle and the force-velocity relationship for the muscle, (2) muscle length and the length-tension relationship for the muscle, and (3) the pattern of stimulation and the time course of muscle activation f...

This article reviews our knowledge of crustacean vitellogenin and its role in vitellogenesis. Besides the biochemical and immunological aspects, particular attention has been given to hormonal control of the synthesis of this yolk precursor. Some examples from insects, amphibians and birds are compared.

Pentachlorophenol (PCP) concentrations were determined in 55 samples of fish, shrimp, crabs, frogs and turtles collected in Jiangsu Province and 55 freshwater shrimp samples collected from the Huiming Fish Market, Nanjing, China between 2003 and 2004. PCP concentrations ranged from less than the method detection limit (MDL: 0.5 microg/kg ww) to 61 microg/kg ww, with a mean of 5.2 microg/kg ww i...

This review and data analysis outline how fish biologists should most reliably estimate the minimal amount of oxygen needed by a fish to support its aerobic metabolic rate (termed standard metabolic rate; SMR). By reviewing key literature, it explains the theory, terminology and challenges underlying SMR measurements in fishes, which are almost always made using respirometry (which measures oxy...

Abstract. Muhtadi A, Yulianda F, Boer MF, Krisanti M. 2022. Spatial distribution management of Crustacea (Decapoda) based on conservation in tropical tidal lake. Biodiversitas 23: 4064-4072. Siombak Lake has a unique biological system impacted by high and low tides. Crustaceans found this lake are predicted to establish distinctive communities due their interaction with two systems seawater fre...