Abstract In this study, multi-tissue (yolk and carapace) stable isotope analysis was used to assess individual isotopic niche trajectories of nesting green turtles on Rocas Atoll, off northeastern Brazil, reveal a diet shift in the temporal dimension. The were highly directional, with stronger component towards decreasing values ?15N from carapace yolk. When are their foraging sites (temporal w...

The growth rate and mortality of giant prawns (Macrobrachium rosenbergii) in the Kuala Cenaku River, Indragiri Hulu Regency, Riau Province were carried out based on carapace length frequency data collected from May to July 2020. This study aims at River. For estimating dynamic population, analysed by using FiSAT II. parameter tiger shrimp was 0,78/year with asymptotic (L) 84,8 mm, total (Z), na...

The family Spirorchiidae includes trematodes of freshwater and marine chelonian blood vessels. Up to now, Learedius learedi Price, 1934 has been the only species of this family described in Brazil (Werneck et al., 2006). The present study reports for the first time the occurrence of Monticellius indicum Mehra, 1939 in Brazilian waters. Specimens of M. indicum were collected from the heart of tw...

Mercury concentrations in carapace fragments of the green turtle Chelonia mydas from the Ceará coast in NE Brazil are reported. Concentrations varied from <0.34 to 856.6 ng.g(-1) d.w., and were highest (average of 154.8 ng.g(-1) d.w.) in juveniles (n = 22), whereas lowest concentrations (average of 2.5 ng.g(-1) d.w.) were observed in adult/sub-adult animals (n = 3). There was a significant nega...

A new porcellanid crab, Lissoporcellana demani n. sp. is described based on material from the Beibu Bay in the northern South China Sea. The new species can be distinguished from other congeners by the shape of rostrum, form of fixed finger of smaller cheliped and armature of lateral margins of carapace. The poorly known species L. streptochiroides (Johnson, 1970), which resembles L. demani n. ...

The hydrodynamic bases for the stability of locomotory motions in fishes are poorly understood, even for those fishes, such as the rigid-bodied smooth trunkfish Lactophrys triqueter, that exhibit unusually small amplitude recoil movements during rectilinear swimming. We have studied the role played by the bony carapace of the smooth trunkfish in generating trimming forces that self-correct for ...