D(--)-lactic acid and d(--)-lactate dehydrohgenase in octopus spermatozoa     

T Mann  A W Martin  J B Thiersch  C Lutwak-Mann  D E Brooks  R Jones 《Science (New York, N.Y.)》1974,185(149):453-454

The spermatozoa of Octopus dofleini martini produce anaerobically D(-)-lactic acid and possess a very active D(-)-lactate dehydrogenase. In this respect, while resembling certain microorganisms, they differ strikingly from mammalian spermatozoa which produce L(+)-lactic acid and contain L(+)-lactate dehydrogenase.  相似文献   

OBSERVATIONS OF THE AURORA OF AUGUST 26 FROM BRITISH COLUMBIA AND ALASKA     

Alexander K  Vreeland FK  Brainerd E  Cooper WS  Brooks AH  Malte MO 《Science (New York, N.Y.)》1916,44(1145):815-817

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Sexual responsiveness is condition-dependent in female guppies, but preference functions are not     

Alexandra Syriatowicz  Robert Brooks 《BMC ecology》2004,4(1):1-9

Background

Research on the ecological consequences of global climate change has elicited a growing interest in the use of time series analysis to investigate population dynamics in a changing climate. Here, we compare linear and non-linear models describing the contribution of climate to the density fluctuations of the population of wolves on Isle Royale, Michigan from 1959 to 1999.

Results

The non-linear self excitatory threshold autoregressive (SETAR) model revealed that, due to differences in the strength and nature of density dependence, relatively small and large populations may be differentially affected by future changes in climate. Both linear and non-linear models predict a decrease in the population of wolves with predicted changes in climate.

Conclusions

Because specific predictions differed between linear and non-linear models, our study highlights the importance of using non-linear methods that allow the detection of non-linearity in the strength and nature of density dependence. Failure to adopt a non-linear approach to modelling population response to climate change, either exclusively or in addition to linear approaches, may compromise efforts to quantify ecological consequences of future warming.  相似文献   

What's a wetland, anyhow?     

Kennedy D  Hanson B 《Science (New York, N.Y.)》2006,313(5790):1019

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First detection of Edwardsiella ictaluri (Proteobacteria: Enterobacteriaceae) in wild Australian catfish          下载免费PDF全文

E Kelly  P A J Martin  S Gibson‐Kueh  D L Morgan  B C Ebner  J Donaldson  N Buller  D A Crook  S Brooks  A M Davis  M P Hammer  L Foyle  S Hair  A J Lymbery 《Journal of fish diseases》2018,41(2):199-208

The bacterium Edwardsiella ictaluri is considered to be one of the most significant pathogens of farmed catfish in the United States of America and has also caused mortalities in farmed and wild fishes in many other parts of the world. E. ictaluri is not believed to be present in wild fish populations in Australia, although it has previously been detected in imported ornamental fishes held in quarantine facilities. In an attempt to confirm freedom from the bacterium in Australian native fishes, we undertook a risk‐based survey of wild catfishes from 15 sites across northern Australia. E. ictaluri was detected by selective culturing, followed by DNA testing, in Wet Tropics tandan (Tandanus tropicanus) from the Tully River, at a prevalence of 0.40 (95% CI 0.21–0.61). The bacterium was not found in fishes sampled from any of the other 14 sites. This is the first report of E. ictaluri in wild fishes in Australia.  相似文献   

Contemporary and emerging fisheries in The Bahamas—Conservation and management challenges,achievements and future directions          下载免费PDF全文

Krista D. Sherman  Aaron D. Shultz  Craig P. Dahlgren  Claire Thomas  Edward Brooks  Annabelle Brooks  Daniel R. Brumbaugh  Lester Gittens  Karen J. Murchie 《Fisheries Management and Ecology》2018,25(5):319-331

The harvest of marine resources has long‐standing cultural and economic importance to The Bahamas and other small island developing states. Tourists and residents place a demand on local marine resources, particularly Caribbean spiny lobster, Panulirus argus (Latreille), queen conch, Lobatus gigas (Linnaeus) and Nassau grouper, Epinephelus striatus (Bloch), and many fishery products are also sold on the global market. Illegal, unreported and unregulated fishing coupled with inadequate regulations and enforcement are the main factors contributing to the decline of Bahamian fisheries along with other anthropogenic impacts. This article reviews the status of fisheries management in The Bahamas using economically and ecologically important species as case studies to highlight conservation successes, knowledge gaps and deficiencies in existing management approaches. The review concludes with an examination of how emerging fisheries and improved conservation management strategies have the potential to improve economic and food security throughout the archipelago.  相似文献   

What is your diagnosis? Lymph node aspirates from a dog with prominent lymphadenomegaly          下载免费PDF全文

Charalampos Attipa  Fiona Brooks  Alison Wilson  Ragnhild Skulberg  Kate English 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2017,46(4):641-642

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