LIVIVO - Search results -

Search results

Result 1 - 10 of total 29

Search options

Article ; Online: Disentangling the influence of entanglement on recruitment in North Atlantic right whales.

Reed, Joshua / New, Leslie / Corkeron, Peter / Harcourt, Robert

2024 Volume 291, Issue 2018, Page(s) 20240314

Abstract: North Atlantic right whales are Critically Endangered and declining, with entanglements in fishing gear a key contributor to their decline. Entanglement events can result in lethal and sub-lethal (i.e. increased energetic demands and reduced foraging ... ...

Abstract	North Atlantic right whales are Critically Endangered and declining, with entanglements in fishing gear a key contributor to their decline. Entanglement events can result in lethal and sub-lethal (i.e. increased energetic demands and reduced foraging ability) impacts, with the latter influencing critical life-history states, such as reproduction. Using a multi-event framework, we developed a Bayesian mark-recapture model to investigate the influence of entanglement severity on survival and recruitment for female right whales. We used information from 199 known-aged females sighted between 1977 and 2018, combined with known entanglements of varying severity that were classified as minor, moderate or severe. Severe entanglements resulted in an average decline in survival of 27% for experienced non-breeders, 9% for breeders and 26% for pre-breeding females compared with other entanglements and unentangled individuals. Surviving individuals with severe entanglements had low transitional probabilities to breeders, but surprisingly, individuals with minor entanglements had the lowest transitional probabilities, contrary to expectations underpinning current management actions. Management actions are needed to address the lethal and sub-lethal impacts of entanglements, regardless of severity classification.
MeSH term(s)	Humans ; Animals ; Female ; Aged ; Whales ; Bayes Theorem ; Reproduction ; Breeding ; Atlantic Ocean
Language	English
Publishing date	2024-03-13
Publishing country	England
Document type	Journal Article
ZDB-ID	209242-6
ISSN	1471-2954 ; 0080-4649 ; 0962-8452 ; 0950-1193
ISSN (online)	1471-2954
ISSN	0080-4649 ; 0962-8452 ; 0950-1193
DOI	10.1098/rspb.2024.0314
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 1364: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- See ZB MED holdings
- Order with fees

Article: Bioenergetic modelling of a marine top predator's responses to changes in prey structure.

Silva, Mariana P / Oliveira, Cláudia / Prieto, Rui / Silva, Mónica A / New, Leslie / Pérez-Jorge, Sergi

Ecology and evolution

2024 Volume 14, Issue 3, Page(s) e11135

Abstract: Determining how animals allocate energy, and how external factors influence this allocation, is crucial to understand species' life history requirements and response to disturbance. This response is driven in part by individuals' energy balance, prey ... ...

Abstract	Determining how animals allocate energy, and how external factors influence this allocation, is crucial to understand species' life history requirements and response to disturbance. This response is driven in part by individuals' energy balance, prey characteristics, foraging behaviour and energy required for essential functions. We developed a bioenergetic model to estimate minimum foraging success rate (FSR), that is, the lowest possible prey capture rate for individuals to obtain the minimum energy intake needed to meet daily metabolic requirements, for female sperm whale (
Language	English
Publishing date	2024-03-24
Publishing country	England
Document type	Journal Article
ZDB-ID	2635675-2
ISSN	2045-7758
ISSN	2045-7758
DOI	10.1002/ece3.11135
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Microbial mutualist distribution limits spread of the invasive legume Medicago polymorpha

Lopez, Zoie C / Friesen, Maren L / Von Wettberg, Eric / New, Leslie / Porter, Stephanie

Biological invasions. 2021 Mar., v. 23, no. 3

2021

Abstract: The spread of invasive species can be limited or promoted by the distributions of mutualists, which presents an opportunity for managing biological invasions. However, the ways in which the geographical distributions of mutualists shape the range limits ... ...

Abstract	The spread of invasive species can be limited or promoted by the distributions of mutualists, which presents an opportunity for managing biological invasions. However, the ways in which the geographical distributions of mutualists shape the range limits and invasion dynamics of introduced species remains unclear. Legumes include noxious invaders whose success is tied to their mutualism with nitrogen-fixing rhizobium bacteria. We examine whether the availability of compatible rhizobia limits the spread of an invasive legume at both small (50 m) and large (United States) spatial scales across natural invasion fronts. Using greenhouse experiments we simulated the dispersal of Medicago polymorpha into soils at increasing distances from a host patch. We find that rhizobial mutualist availability rapidly declines to almost zero within 20 m of established legume patches and legume fitness and the percentage of leaf nitrogen derived from symbiotic nitrogen fixation show a concomitant decline. The decline of fitness due to the lack of rhizobium mutualists differs among M. polymorpha genotypes. Our findings support the missed mutualist hypothesis whereby mutualist limitation reduces invasiveness. As M. polymorpha colonizes novel areas, seeds following either short- (50 m) or long-range seed dispersal will be mutualist-limited and exhibit low fitness and nitrogen fixation. Without co-introduction via transport of soil containing both mutualists, the patchy distribution of E. medicae may limit M. polymorpha invasion. Plant lineages exhibit genetic variation upon which selection could act to reduce dependence on rhizobia, thus a scarcity of symbionts could cause plant symbiosis traits to evolve during invasion.
Keywords	Medicago polymorpha ; decline ; genetic variation ; greenhouses ; introduced species ; invasive species ; leaves ; legumes ; mutualism ; nitrogen ; nitrogen fixation ; seed dispersal ; soil ; symbionts
Language	English
Dates of publication	2021-03
Size	p. 843-856.
Publishing place	Springer International Publishing
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	1438729-3
ISSN	1573-1464 ; 1387-3547
ISSN (online)	1573-1464
ISSN	1387-3547
DOI	10.1007/s10530-020-02404-4
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 7608: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article ; Online: AP-3 complex subunit delta gene, ap3d1, regulates melanogenesis and melanophore survival via autophagy in zebrafish (Danio rerio).

Neuffer, Sam J / Beltran-Cardona, David / Jimenez-Perez, Kevin / Clancey, Lauren F / Brown, Alexander / New, Leslie / Cooper, Cynthia D

Pigment cell & melanoma research

2022 Volume 35, Issue 5, Page(s) 495–505

Abstract: Zebrafish are an emerging model organism to study the syndromic albinism disorder, Hermansky-Pudlak syndrome (HPS), due to visible pigment development at 24 hours postfertilization, and conserved melanogenesis mechanisms. We describe crasher, a novel HPS ...

Abstract	Zebrafish are an emerging model organism to study the syndromic albinism disorder, Hermansky-Pudlak syndrome (HPS), due to visible pigment development at 24 hours postfertilization, and conserved melanogenesis mechanisms. We describe crasher, a novel HPS type 10 (HPS10) zebrafish model, with a mutation in AP-3 complex subunit delta gene, ap3d1. Exon 14 of ap3d1 is overexpressed in crasher mutants, while the expression of ap3d1 as a whole is reduced. ap3d1 knockout in *AB zebrafish recapitulates the mutant crasher phenotype. We show ap3d1 loss-of-function mutations cause significant expression changes in the melanogenesis genes, dopachrome tautomerase (dct) and tyrosinase-related protein 1b (tyrp1b), but not tyrosinase (tyr). Last, Generally Applicable Gene-set Enrichment (GAGE) analysis suggests autophagy pathway genes are upregulated together in crasher. Treatment with autophagy-inhibitor, bafilomycin A1, significantly decreases melanophore number in crasher, suggesting ap3d1 promotes melanophore survival by limiting excessive autophagy. crasher is a valuable model to explore the regulation of melanogenesis gene expression and pigmentation disease.
MeSH term(s)	Animals ; Autophagy/genetics ; Carrier Proteins/genetics ; Hermanski-Pudlak Syndrome/genetics ; Melanophores/metabolism ; Mutation ; Pigmentation/genetics ; Zebrafish/genetics ; Zebrafish/metabolism
Chemical Substances	Carrier Proteins
Language	English
Publishing date	2022-07-08
Publishing country	England
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	2409570-9
ISSN	1755-148X ; 1600-0749 ; 0893-5785 ; 1755-1471
ISSN (online)	1755-148X ; 1600-0749
ISSN	0893-5785 ; 1755-1471
DOI	10.1111/pcmr.13055
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Cologne/Königswinter

Zs.A 2444: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾

Article: Assessing variation in faecal glucocorticoid concentrations in gray whales exposed to anthropogenic stressors.

Pirotta, Enrico / Fernandez Ajó, Alejandro / Bierlich, K C / Bird, Clara N / Buck, C Loren / Haver, Samara M / Haxel, Joseph H / Hildebrand, Lisa / Hunt, Kathleen E / Lemos, Leila S / New, Leslie / Torres, Leigh G

Conservation physiology

2023 Volume 11, Issue 1, Page(s) coad082

Abstract: Understanding how individual animals respond to stressors behaviourally and physiologically is a critical step towards quantifying long-term population consequences and informing management efforts. Glucocorticoid (GC) metabolite accumulation in various ... ...

Abstract	Understanding how individual animals respond to stressors behaviourally and physiologically is a critical step towards quantifying long-term population consequences and informing management efforts. Glucocorticoid (GC) metabolite accumulation in various matrices provides an integrated measure of adrenal activation in baleen whales and could thus be used to investigate physiological changes following exposure to stressors. In this study, we measured GC concentrations in faecal samples of Pacific Coast Feeding Group (PCFG) gray whales (
Language	English
Publishing date	2023-11-11
Publishing country	England
Document type	Journal Article
ZDB-ID	2721508-8
ISSN	2051-1434
ISSN	2051-1434
DOI	10.1093/conphys/coad082
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: (with research data) Central place foragers and moving stimuli: A hidden-state model to discriminate the processes affecting movement.

Pirotta, Enrico / Edwards, Ewan W J / New, Leslie / Thompson, Paul M

The Journal of animal ecology

2018 Volume 87, Issue 4, Page(s) 1116–1125

Abstract: Human activities can influence the movement of organisms, either repelling or attracting individuals depending on whether they interfere with natural behavioural patterns or enhance access to food. To discern the processes affecting such interactions, an ...

Abstract	Human activities can influence the movement of organisms, either repelling or attracting individuals depending on whether they interfere with natural behavioural patterns or enhance access to food. To discern the processes affecting such interactions, an appropriate analytical approach must reflect the motivations driving behavioural decisions at multiple scales. In this study, we developed a modelling framework for the analysis of foraging trips by central place foragers. By recognising the distinction between movement phases at a larger scale and movement steps at a finer scale, our model can identify periods when animals are actively following moving attractors in their landscape. We applied the framework to GPS tracking data of northern fulmars Fulmarus glacialis, paired with contemporaneous fishing boat locations, to quantify the putative scavenging activity of these seabirds on discarded fish and offal. We estimated the rate and scale of interaction between individual birds and fishing boats and the interplay with other aspects of a foraging trip. The model classified periods when birds were heading out to sea, returning towards the colony or following the closest boat. The probability of switching towards a boat declined with distance and varied depending on the phase of the trip. The maximum distance at which a bird switched towards the closest boat was estimated around 35 km, suggesting the use of olfactory information to locate food. Individuals spent a quarter of a foraging trip, on average, following fishing boats, with marked heterogeneity among trips and individuals. Our approach can be used to characterise interactions between central place foragers and different anthropogenic or natural stimuli. The model identifies the processes influencing central place foraging at multiple scales, which can improve our understanding of the mechanisms underlying movement behaviour and characterise individual variation in interactions with a range of human activities that may attract or repel these species. Therefore, it can be adapted to explore the movement of other species that are subject to multiple dynamic drivers.
MeSH term(s)	Animals ; Birds/physiology ; Ecosystem ; Feeding Behavior ; Models, Biological ; Movement ; Olfactory Perception
Language	English
Publishing date	2018-04-19
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	3024-7
ISSN	1365-2656 ; 0021-8790
ISSN (online)	1365-2656
ISSN	0021-8790
DOI	10.1111/1365-2656.12830
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 72/708: Show issues
Z 2600: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article ; Online: Melanosome maturation proteins Oca2, Mitfa and Vps11 are differentially required for cisplatin resistance in zebrafish melanocytes.

Peterson, Kersten A / Neuffer, Samantha / Bean, Miranda E / New, Leslie / Coffin, Allison B / Cooper, Cynthia D

Experimental dermatology

2019 Volume 28, Issue 7, Page(s) 795–800

Abstract: Melanoma is the deadliest form of skin cancer, partially due to its inherent resistance to therapy. Here, we test in live larvae the hypothesis that mature melanosomes contribute to resistance to chemotherapeutic drug, cisplatin, via drug sequestration. ... ...

Abstract	Melanoma is the deadliest form of skin cancer, partially due to its inherent resistance to therapy. Here, we test in live larvae the hypothesis that mature melanosomes contribute to resistance to chemotherapeutic drug, cisplatin, via drug sequestration. We also compare three melanosome biogenesis proteins-microphthalmia-associated transcription factor (Mitfa), vacuolar protein sorting 11 (Vps11) and oculocutaneous albinism 2 (Oca2) to determine their respective contributions to chemoresistance. Melanocytes in zebrafish larvae harbouring loss-of-function mutations in the mitfa, vps11 or oca2 genes are more sensitive to cisplatin damage than wild-type larvae. As a comparison, we examined sensory hair cells of the lateral line, which are sensitive to cisplatin. Hair cells in oca2 and mitfa mutants do not show increased cisplatin sensitivity when compared to wild-type larvae, suggesting the increase in cisplatin sensitivity could be melanocyte specific. However, hair cells in vps11 mutants are more sensitive to cisplatin than their wild-type counterparts, suggesting that this mutation increases cisplatin susceptibility in multiple cell types. This is the first in vivo study to show an increase in chemotherapeutic drug sensitivity when melanosome maturation mutations are present. The proteins tested, especially Oca2, represent novel drug targets for increasing the efficiency of melanoma chemotherapy treatment.
MeSH term(s)	Animals ; Cisplatin/pharmacology ; Disease Models, Animal ; Drug Resistance, Neoplasm ; In Situ Hybridization ; Melanocytes/cytology ; Melanosomes/physiology ; Membrane Transport Proteins/physiology ; Microphthalmia-Associated Transcription Factor/physiology ; Mutation ; Vesicular Transport Proteins/physiology ; Zebrafish ; Zebrafish Proteins/physiology
Chemical Substances	Membrane Transport Proteins ; Microphthalmia-Associated Transcription Factor ; OCA2 protein, zebrafish ; Vesicular Transport Proteins ; Zebrafish Proteins ; mitfa protein, zebrafish ; vacuolar protein sorting 11, zebrafish ; Cisplatin (Q20Q21Q62J)
Language	English
Publishing date	2019-05-15
Publishing country	Denmark
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1130936-2
ISSN	1600-0625 ; 0906-6705
ISSN (online)	1600-0625
ISSN	0906-6705
DOI	10.1111/exd.13937
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Cologne/Königswinter

Zs.A 3508: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾

Article ; Online: Propensity for Risk in Reproductive Strategy Affects Susceptibility to Anthropogenic Disturbance.

Pirotta, Enrico / Hin, Vincent / Mangel, Marc / New, Leslie / Costa, Daniel P / de Roos, André M / Harwood, John

The American naturalist

2020 Volume 196, Issue 4, Page(s) E71–E87

Abstract: AbstractAnimals initiate, interrupt, or invest resources in reproduction in light of their physiology and the environment. The energetic risks entailed in an individual's reproductive strategy can influence the ability to cope with additional stressors, ... ...

Abstract	AbstractAnimals initiate, interrupt, or invest resources in reproduction in light of their physiology and the environment. The energetic risks entailed in an individual's reproductive strategy can influence the ability to cope with additional stressors, such as anthropogenic climate change and disturbance. To explore the trade-offs between internal state, external resource availability, and reproduction, we applied state-dependent life-history theory (SDLHT) to a dynamic energy budget (DEB) model for long-finned pilot whales (
MeSH term(s)	Animals ; Energy Metabolism ; Female ; Human Activities ; Life History Traits ; Reproduction/physiology ; Whales, Pilot/physiology
Language	English
Publishing date	2020-08-31
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	207092-3
ISSN	1537-5323 ; 0003-0147
ISSN (online)	1537-5323
ISSN	0003-0147
DOI	10.1086/710150
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Bonn / Germany

Z 71/723: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Indirect effects of primary prey population dynamics on alternative prey.

Barraquand, Frédéric / New, Leslie F / Redpath, Stephen / Matthiopoulos, Jason

Theoretical population biology

2015 Volume 103, Page(s) 44–59

Abstract: We develop a theory of generalist predation showing how alternative prey species are affected by changes in both mean abundance and variability (coefficient of variation) of their predator's primary prey. The theory is motivated by the indirect effects ... ...

Abstract	We develop a theory of generalist predation showing how alternative prey species are affected by changes in both mean abundance and variability (coefficient of variation) of their predator's primary prey. The theory is motivated by the indirect effects of cyclic rodent populations on ground-breeding birds, and developed through progressive analytic simplifications of an empirically-based model. It applies nonetheless to many other systems where primary prey have fast life-histories and can become superabundant, thus facilitating impact on alternative prey species and generating highly asymmetric interactions. Our results suggest that predator effects on alternative prey should generally decrease with mean primary prey abundance, and increase with primary prey variability (low to high CV)-unless predators have strong aggregative responses, in which case these results can be reversed. Approximations of models including predator dynamics (general numerical response with possible delays) confirm these results but further suggest that negative temporal correlation between predator and primary prey is harmful to alternative prey. Finally, we find that measurements of predator numerical responses are crucial to predict-even qualitatively-the response of ecosystems to changes in the dynamics of outbreaking prey species.
MeSH term(s)	Animals ; Models, Theoretical ; Predatory Behavior ; Rodentia
Language	English
Publishing date	2015-08
Publishing country	United States
Document type	Journal Article
ZDB-ID	3948-2
ISSN	1096-0325 ; 0040-5809
ISSN (online)	1096-0325
ISSN	0040-5809
DOI	10.1016/j.tpb.2015.04.002
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Cologne/Königswinter

Zs.A 1097: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾

Article: Context-dependent variability in the predicted daily energetic costs of disturbance for blue whales.

Pirotta, Enrico / Booth, Cormac G / Cade, David E / Calambokidis, John / Costa, Daniel P / Fahlbusch, James A / Friedlaender, Ari S / Goldbogen, Jeremy A / Harwood, John / Hazen, Elliott L / New, Leslie / Southall, Brandon L

Conservation physiology

2021 Volume 9, Issue 1, Page(s) coaa137

Abstract: Assessing the long-term consequences of sub-lethal anthropogenic disturbance on wildlife populations requires integrating data on fine-scale individual behavior and physiology into spatially and temporally broader, population-level inference. A typical ... ...

Abstract	Assessing the long-term consequences of sub-lethal anthropogenic disturbance on wildlife populations requires integrating data on fine-scale individual behavior and physiology into spatially and temporally broader, population-level inference. A typical behavioral response to disturbance is the cessation of foraging, which can be translated into a common metric of energetic cost. However, this necessitates detailed empirical information on baseline movements, activity budgets, feeding rates and energy intake, as well as the probability of an individual responding to the disturbance-inducing stressor within different exposure contexts. Here, we integrated data from blue whales (
Language	English
Publishing date	2021-01-16
Publishing country	England
Document type	Journal Article
ZDB-ID	2721508-8
ISSN	2051-1434
ISSN	2051-1434
DOI	10.1093/conphys/coaa137
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

To top

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito