Sulfide binding characteristics of blood serum in Calyptogena pacifica and Vesicomya gigas

The sulfide binding characteristics of blood serum were studied in vitro in two deep-sea vesicomyid clams, Calyptogena pacifica and Vesicomya gigas. Both the C. pacifica and the V. gigas serum concentrated sulfide at least an order of magnitude above ambient levels. V. gigas accumulated sulfide faster than C. pacifica, reaching saturation at 5000 M after an hour. C. pacifica bound sulfide at half the rate of V. gigas, reaching saturation in about two hours at a substantially higher concentration of sulfide. The observed distribution of the animals near cold seeps in the Monterey Submarine Canyon can be explained by their different sulfide binding abilities. The hypothesis that cold seeps are actually much more unstable sources of sulfide than previously assumed is explored.

A preliminary study on Dodecaceria pacifica (Fewkes)

In various areas along the coast in the vicinity of Monterey there are many colonies of the Polychaete worm Dodecaceria pacifica. An attempt has been made to find out something of the distribution, size, structure and the flora and fauna associated with these colonies.

Rediscovery of the sea cucumber "Toxodora" pacifica Ohshima, 1915 (Echinodermata : Holothuroidea : Apodida)

The apodous holothurian species originally described by Ohshima ( 1915) as Toxodora pacifica has been rediscovered, and its known geographic range extended from Suruga Bay, Japan to the western side of the Yellow Sea, China. As the genus name Toxodora is no longer available, a new genus name, Neotoxodora Liao, Pawson, and Wei, is proposed. The type material of Neotoxodora pacifica is lost, and a Neotype is named for this species.

Natal emigration by both sexes in the La Pacifica population of mantled howlers: when do some stay?

We have reported previously that all male and female mantled howlers emigrate from natal groups at Hacienda La Pacifica, Costa Rica. In the years since that report, a small number of juveniles have stayed in the natal group without experiencing a solitary phase. Here, we present a post hoc analysis on juvenile emigration in six groups of howlers under observation for varying amounts of time between 1972 and 2005. Our records revealed 139 juveniles for whom emigration status was certain, and 125 of these did emigrate. There was a significant association between presence of mother and emigration: juveniles without mothers were more likely to remain in their natal group (chi(1)(2) = 53.1, P<.0001). The mean age of emigration for all juveniles (n = 125) was 2.47 years (SD = 0.9, range = 1.5-6.5). There was no difference in age of emigration by adult male composition (one-male, multi-male, both), but juveniles of unknown sex emigrated younger than either known males or females (F(2,116) = 4.4, P<.02). For emigrating juveniles of known sex (n = 99), both males and females without mothers left at a later age than those with mothers (F(1,95) = 6.5, P<.02). Although philopatry or delayed emigration occurs in a few motherless animals, most males and females do emigrate from their natal groups at ages consistent with those reported for other species of howlers.

Sommola aurea de pacifica conscientia, vel modo de confessare ([Reprod.])

Collection : Italian books before 1601 ; 527.5

Desarrollo de habilidades sociales necesarias para la gestión pacifica de conflictos en el área escolar

La propuesta que se presenta tiene como fin desarrollar habilidades sociales en niños del Colegio Cofraternidad de San Fernando, de la Localidad de Ciudad Bolívar, que les permita solucionar problemas interpersonales por medio de estrategias no agresivas, para mejorar su convivencia tanto en la Institución Educativa, como en otros contextos

Coproduction and Casula's Pacifica Program: Initial research findings

This research takes Casula Powerhouse Art Centre’s Pacifica program as a case study to investigate the ways in which museum and galleries are involved in coproduction with culturally diverse communities. Coproduction is defined here as:Museum and gallery practice conducted jointly with communities or other external partiesThe benefits of coproduction are that it leads to more effective and efficient public services (including arts and cultural services) while also building the skills and capacity of the community. However coproduction is not easy, particularly because it requires public service providers and communities to work in ‘equal and reciprocal’ relationships.As an organisation with strong and strategic alliances to its governing body (Liverpool City Council), Casula brings a strong capacity for coproduction. Internally it has support and commitment to coproduction from across the organisation. The staff at Casula bring exceptional relational skills. The organisation’s capacity to coproduce draws heavily on their skills as cultural brokers and experience in community cultural development practice. The communities Casula works with bring strong cultural knowledge and practice, along with a desire to maintain and preserve these community resources. Casula’s coproduction work also meets external political needs for public services to deliver increased public value as well as a greater diversity in the profile of arts audiences.The key challenge for Casula Powerhouse’s coproduction work is the extent to which it aims for joint delivery of public services through ‘equal and reciprocal’ relationships with the community, or uses coproduction as a tool for community engagement and audience development. Advocates of coproduction in the public sector argue for its value as a means of delivering more effective and efficient public services while at the same time building the skills and capacity of local communities. A critical element of coproduction according to these writers and scholars is the development and delivery of public services through ‘equal and reciprocal’ relationships between providers and users.The value of coproduction for Casula Powerhouse and the Pacifica program is its use as a means of community engagement and audience development. Coproduction is a feature of the components of Pacifica that enable the participation of the community and provide entry points for audiences to engage with contemporary art. Evidence of this approach to coproduction can be seen in the dual ‘stakeholder’ and ‘audience’ role that the community have within the Pacifica program. The community is therefore both a contributor to Pacifica and a beneficiary of this work. The benefits Casula Powerhouse receives from the community’s involvement in Pacifica are greater public value of its work and stronger engagement with communities and audiences.Although coproduction may not be the focus of all aspects of Pacifica, the involvement of Pacific Islander communities in the program results in exhibitions and public programs that are not typical contemporary art gallery offerings. Pacifica is further evidence of Casula Powerhouse’s innovative and entrepreneurial approach to gallery practice. The use of coproduction also ensures Pacifica offers an authentic and distinctive gallery experience.

Killer Whales and Marine Mammal Trends in The North Pacific—A Re-Examination of Evidence for Sequential Megafauna Collapse and the Prey-Switching Hypothesis

Springer et al. (2003) contend that sequential declines occurred in North Pacific populations of harbor and fur seals, Steller sea lions, and sea otters. They hypothesize that these were due to increased predation by killer whales, when industrial whaling’s removal of large whales as a supposed primary food source precipitated a prey switch. Using a regional approach, we reexamined whale catch data, killer whale predation observations, and the current biomass and trends of potential prey, and found little support for the prey-switching hypothesis. Large whale biomass in the Bering Sea did not decline as much as suggested by Springer et al., and much of the reduction occurred 50–100 yr ago, well before the declines of pinnipeds and sea otters began; thus, the need to switch prey starting in the 1970s is doubtful. With the sole exception that the sea otter decline followed the decline of pinnipeds, the reported declines were not in fact sequential. Given this, it is unlikely that a sequential megafaunal collapse from whales to sea otters occurred. The spatial and temporal patterns of pinniped and sea otter population trends are more complex than Springer et al. suggest, and are often inconsistent with their hypothesis. Populations remained stable or increased in many areas, despite extensive historical whaling and high killer whale abundance. Furthermore, observed killer whale predation has largely involved pinnipeds and small cetaceans; there is little evidence that large whales were ever a major prey item in high latitudes. Small cetaceans (ignored by Springer et al.) were likely abundant throughout the period. Overall, we suggest that the Springer et al. hypothesis represents a misleading and simplistic view of events and trophic relationships within this complex marine ecosystem.