scholarly journals Fathers in hot water: rising sea temperatures and a Northeastern Atlantic pipefish baby boom

2006 ◽  
Vol 2 (4) ◽  
pp. 597-600 ◽  
Author(s):  
Richard R Kirby ◽  
David G Johns ◽  
John A Lindley
Keyword(s):  
Sex Role ◽  
Baby Boom ◽  
Reproductive Rate ◽  
Hot Water ◽  
Operational Sex Ratio ◽  
Closely Related Species ◽  
Mid Atlantic Ridge ◽  
The Impact ◽  
Northeastern Atlantic

We report unprecedented numbers of juvenile snake pipefish, Entelurus aequoreus , in continuous plankton records of the Northeastern Atlantic since 2002. Increased sea surface temperatures (SSTs) in the Northern Hemisphere, linked to global warming, are a likely cause. Analysis of a long-term time-series of SST data in the Northeastern Atlantic shows a rise in winter, spring and summer sea temperatures (January–September), when the eggs of E. aqueoreus , which are brooded by the male, are developing and the larvae are growing in plankton. From what is known of the reproductive biology of closely related species, we suggest that the increased abundance of larval and juvenile E. aequoreus in the plankton as far west as the Mid-Atlantic Ridge may reflect the impact of temperature on abundance, through its effects on the operational sex ratio and potential reproductive rate, the onset of the breeding season and juvenile survival in this sex role reversed fish.

Seahorses Exhibit Conventional Sex Roles in Mating Competition, Despite Male Pregnancy

Behaviour ◽  
1994 ◽  
Vol 128 (1-2) ◽  
pp. 135-151 ◽  
Author(s):  
Amanda C.J. Vincent
Keyword(s):  
Sex Ratio ◽  
Sex Roles ◽  
Laboratory Experiments ◽  
Sex Role ◽  
Male Reproduction ◽  
Operational Sex Ratio ◽  
Mating Competition ◽  
Male Pregnancy ◽  
The Impact

AbstractIn seahorses, only males undergo a pregnancy. It had been tacitly and explicitly assumed that seahorses were sex role reversed (that females competed more intensely than males for access to mates), on the basis that male pregnancy so limited male reproduction as to produce a female-biased operational sex ratio (OSR). However, this supposition had never been investigated. The laboratory experiments in this paper demonstrate that, contrary to expectations, seahorses exhibit conventional sex roles: male seahorses compete more intensely than females for access to mates, on both the first and final days of courtship. Competing males are more active than competing females in those courtship and competitive behaviours common to both sexes, and only males exhibit uniquely competitive behaviours (wrestling and snapping). Males which succeeded in copulating are heavier than their rivals and copulating seahorses of both sexes generally are more active in courtship and competition than are their unsuccessful rivals. The finding that seahorses maintain conventional sex roles requires us to reconsider the impact of male pregnancy on the OSR.

Female territoriality in a paternal mouthbrooding cardinalfish to avoid predation against spawned eggs

2009 ◽  
Vol 87 (6) ◽  
pp. 508-514 ◽  
Author(s):  
Kayoko Fukumori ◽  
Noboru Okuda ◽  
Yasunobu Yanagisawa
Keyword(s):  
Sex Role ◽  
General Rule ◽  
Reproductive Rate ◽  
Operational Sex Ratio ◽  
Territorial Defense ◽  
Egg Predation ◽  
Breeding Territory ◽  
Female Territoriality ◽  
Mating Opportunities ◽  
Potential Reproductive Rate

Generally, paternal mouthbrooding cardinalfishes are characteristic of sex-role-reversed animals: females have a higher potential reproductive rate and are more active in mating competition than males, and the operational sex ratio (OSR) is female-biased. However, one species of cardinalfish, Apogon notatus (Houttuyn, 1782), shows unusual sex roles: females alone defend their breeding territories to form pairs, even though the OSR is male-biased. This is inconsistent with the general rule that breeding territoriality is shown by the more abundant sex. We examined the function of female breeding territory in this fish using field observations. Prior to the breeding season, large females established their territories earlier than small females. Earlier settlers occupied deeper areas with larger boulders where conspecifics were less likely to aggregate. As the level of conspecific aggregation increased, spawning females suffered from frequent intraspecific interference and subsequent egg predation, leading to increased time or energy spent on territorial defense. For the females, territories that have more boulders and fewer conspecifics might be of higher quality because such places are safe from egg predation and less costly to defend. We conclude that females defend their breeding territories to avoid predation of spawned eggs rather than to guard high-quality mates or to increase mating opportunities.

scholarly journals An assessment of seabird–fishery interactions in the Atlantic Ocean

2011 ◽  
Vol 68 (8) ◽  
pp. 1628-1637 ◽  
Author(s):  
G. N. Tuck ◽  
R. A. Phillips ◽  
C. Small ◽  
R. B. Thomson ◽  
N. L. Klaer ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Population Declines ◽  
Closely Related Species ◽  
Conservation Implications ◽  
At Risk Populations ◽  
Fishery Interactions ◽  
Longline Fisheries ◽  
Bird Distribution ◽  
The Impact

Abstract Tuck, G. N., Phillips, R. A., Small, C., Thomson, R. B., Klaer, N. L., Taylor, F., Wanless, R. M., and Arrizabalaga, H. 2011. An assessment of seabird–fishery interactions in the Atlantic Ocean. – ICES Journal of Marine Science, 68: 1628–1637. Currently, 17 of 22 albatross species are listed as Vulnerable, Endangered, or Critically endangered by the International Union for the Conservation of Nature (IUCN). Incidental mortality in fisheries is by far the most widespread cause of the population declines observed for these and other closely related species. In 2006, the International Commission for the Conservation of Atlantic Tunas (ICCAT) requested an assessment of the threat from their fisheries to all seabirds that breed or forage within their jurisdiction. Methods were developed to assess the potential consequences of fishing for more than 60 populations of seabird. The assessment framework involved the identification of at-risk populations, overlap analyses, estimation of total bycatch, and an evaluation of the impact of the bycatch on key selected populations for which there were sufficient data on bird distribution and demography. These were the wandering and black-browed albatrosses of South Georgia and the Atlantic yellow-nosed and Tristan albatrosses of Gough Island. Summary results from the seabird assessment are presented, revealing that ICCAT longline fisheries catch substantial numbers of seabirds, with potentially significant conservation implications. If this mortality is not reduced, the numbers of breeding birds in some populations will continue to decline, threatening their long-term viability.

Long-term care in Spain: a reform failure or the regulation of a development path?

2020 ◽  
Vol 40 (11/12) ◽  
pp. 1301-1317
Author(s):  
Manuel Aguilar-Hendrickson
Keyword(s):  
Long Term Care ◽  
Social Care ◽  
Baby Boom ◽  
Reform Process ◽  
Governance Arrangement ◽  
Term Care ◽  
Content Type ◽  
Care Services ◽  
The Impact

PurposeSpain departed from the Southern European tradition of residual long-term care services with the 2006 reform. The paper aims to present the main traits of the reform and its implementation, explores the reasons that may explain why the reform happened and to which extent and why it fell short of expectations.Design/methodology/approachThe article draws on available literature on the reform and on administrative data to present a complex and nuanced view of the reform process and its limits.FindingsThe reform was actually a measure to enhance and rationalize a preexisting process of social care services development, rather than the creation of a completely new care system. A rapid increase in female labor market participation since the 1990s and the looming demands of a late baby-boom and the subsequent fertility crash appear to be two key factors that explain both the previous development and its bolstering by the reform. The budgetary constraints of the Great Recession and governance problems, linked to a complex and sometimes dysfunctional multilevel governance arrangement, help to understand why the reform bogged down. Nevertheless, the overall balance is more nuanced, and significantly more services are provided 12 years after the reform.Originality/valueWhile many assessments of the reform have been negative, putting it into a larger context of social care development, the 2006 Dependency Act has contributed to a significant increase in expenditure and coverage. The impact of budgetary restrictions has been important, but other factors, such as governance arrangements, may explain more of the problems of the implementation.

Suppressed, but Not Forgotten

2011 ◽  
Vol 70 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Beat Meier ◽  
Anja König ◽  
Samuel Parak ◽  
Katharina Henke
Keyword(s):  
Memory Trace ◽  
Thought Suppression ◽  
Test Phase ◽  
Indirect Test ◽  
Final Test ◽  
Test Experiment ◽  
And Control ◽  
Cue Words ◽  
The Impact

This study investigates the impact of thought suppression over a 1-week interval. In two experiments with 80 university students each, we used the think/no-think paradigm in which participants initially learn a list of word pairs (cue-target associations). Then they were presented with some of the cue words again and should either respond with the target word or avoid thinking about it. In the final test phase, their memory for the initially learned cue-target pairs was tested. In Experiment 1, type of memory test was manipulated (i.e., direct vs. indirect). In Experiment 2, type of no-think instructions was manipulated (i.e., suppress vs. substitute). Overall, our results showed poorer memory for no-think and control items compared to think items across all experiments and conditions. Critically, however, more no-think than control items were remembered after the 1-week interval in the direct, but not in the indirect test (Experiment 1) and with thought suppression, but not thought substitution instructions (Experiment 2). We suggest that during thought suppression a brief reactivation of the learned association may lead to reconsolidation of the memory trace and hence to better retrieval of suppressed than control items in the long term.

Examining the Impact of the Disabled Youth Peer Development Initiative: What are the Long-Term Outcomes?

2003 ◽  
Author(s):  
Teresa Garate-Serafini ◽  
Jose Mendez ◽  
Patty Arriaga ◽  
Larry Labiak ◽  
Carol Reynolds
Keyword(s):  
Long Term Outcomes ◽  
The Disabled ◽  
The Impact

The Impact of Different Treatments on Long-Term Symptoms in Vestibular Schwannoma

2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
Morten Lund-Johansen ◽  
Øystein Tveiten ◽  
Monica Finnkirk ◽  
Erling Myrseth ◽  
Frederik Goplen ◽  
...  
Keyword(s):  
Vestibular Schwannoma ◽  
The Impact

The influence of inflation targeting on the pass-through effect of the exchange rate

2018 ◽  
pp. 70-84
Author(s):  
Ph. S. Kartaev ◽  
Yu. I. Yakimova
Keyword(s):  
Developing Countries ◽  
Monetary Policy ◽  
Exchange Rate ◽  
Inflation Targeting ◽  
Policy Regime ◽  
Short And Long Term ◽  
The Exchange Rate ◽  
Pass Through ◽  
The Impact

The paper studies the impact of the transition to the inflation targeting regime on the magnitude of the pass-through effect of the exchange rate to prices. We analyze cross-country panel data on developed and developing countries. It is shown that the transition to this regime of monetary policy contributes to a significant reduction in both the short- and long-term pass-through effects. This decline is stronger in developing countries. We identify the main channels that ensure the influence of the monetary policy regime on the pass-through effect, and examine their performance. In addition, we analyze the data of time series for Russia. It was concluded that even there the transition to inflation targeting led to a decrease in the dependence of the level of inflation on fluctuations in the ruble exchange rate.

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