A preliminary examination of the diet and feeding of sea sweep Scorpis aequipinnis (Pisces: Scorpididae) from coastal waters of south-western Victoria, Australia

The diet and feeding of sea sweep (Scorpis aequipinnis) was investigated from 230 specimens collected from the south-western Victorian coastline between January and July, 2002. Stomach content analysis indicated that S. aequipinnis are browsing omnivores (55.6% algae, 25.4% animal, by dry weight), with rhodophytes found to be the most important component of their diet (93.5% frequency of occurrence; 42.6% dry weight; 45.5% prey-specific abundance). However, the relative proportions of the major dietary components differed significantly between size classes. The dietary composition of small individuals ( < 150 mm total length) was significantly different to larger individuals, primarily due to a higher degree of carnivory exhibited by the smaller fish. S. aequipinnis were found to be highly flexible feeders exploiting both benthic and pelagic food resources, characterised by irregular periods of selective carnivorous feeding.

No va sobre la sangre. Operacion puerto y el fin de la modernidad

EI caso espanol de dopaje conocido como "Operaci6n Puerto" queda enmarcado dentro del
abandono de las antiguas concepciones legales y la construcci6n de un nuevo sistema funcional de alcance global. "Operaci6n Puerto" ilustra el temor de Verner Moeller de que la politica anti dopaje senala el final de la modernidad - donde se elabora y aplica la ley tanto en los tribunales como en los medios de comunicaci6n. OP es el ejemplo perfecto de la distancia existente entre la ret6rica de la crisis mediatica que rodea al dopaje y al ciclismo profesional y la verdadera realidad de los procesos materiales que tienen lugar mientras el ciclismo atraviesa por un proceso global de reajuste estructural y de construcci6n de una nueva cartografla global del ciclismo. La legitimidad se obtiene a traves de la gesti6n de las crisis y de los acontecimientos: la excepci6n, la funcionalidad y el espectaculo bajo una apariencia de guerra justa contra el mal del dopaje

Testing the interactive effects of carotenoids and polyunsaturated fatty acids on ejaculate traits in the guppy Poecilia reticulata (Pisces: Poeciliidae)

Using the polyandrous livebearing guppy Poecilia reticulata, this study revealed no main effects of carotenoids in the diet on ejaculate traits, but significant main effects of polyunsaturated fatty acids (PUFAs) on sperm viability and weak but significant interacting effects of both nutrients on sperm length. Collectively, these findings not only add evidence that PUFAs are critical determinants of sperm quality, but also provide tentative evidence that for some traits these effects may be moderated by carotenoid intake.