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Bleke CA, Gese EM, Villalba JJ, Roberts SB, French SS. Temporal and Spatial Influences on Fawn Summer Survival in Pronghorn Populations: Management Implications from Noninvasive Monitoring. Animals (Basel) 2024; 14:1468. [PMID: 38791686 PMCID: PMC11117275 DOI: 10.3390/ani14101468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/20/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Monitoring vital rates allows managers to estimate trends in growth rates of ungulate populations. However, connecting the influence of nutrition on ungulate demography is challenging. Noninvasive sampling offers a low-cost, low-effort alternative for measuring nutritional indices, allowing for an increased understanding of the mechanistic relationships between environmental factors, nutrition, and specific population vital rates. We examined the temporal influence of intrinsic and extrinsic factors on pronghorn (Antilocapra americana) fawn recruitment. We collected fresh fecal samples from adult female pronghorn in five subpopulations spanning three sampling periods associated with critical maternal life-history stages (late gestation, early lactation, breeding season) for 2 years to investigate both intra- and interannual influences. Intrinsic factors were fecal glucocorticoid metabolites (FGMs), nutritional indices (fecal nitrogen (FN) and 2,6-diaminopimelic acid (DAPA)), and dietary composition (protein intake of forbs, graminoids, legumes, other, shrubs), while the extrinsic factor was vegetative greenness (normalized difference vegetation index (NDVI)). We found variations in DAPA, protein intake of forbs, variation in forb protein intake, and protein intake of legumes during late gestation positively influenced fawn recruitment. Fecal nitrogen during early lactation showed the strongest positive influence on the recruitment of any measured parameter. Finally, breeding season NDVI and the variation in DAPA values positively influenced the subsequent year's fawn recruitment. Our longitudinal study enabled us to investigate which parameter was most important to specific periods of fawn development and recruitment. We combined the results across five subpopulations, but interpretation and subsequent management decisions should be made at the subpopulation level such that pronghorn subpopulations with low recruitment can be positively influenced by increasing nitrogen on the landscape available to adult females during the early lactation period. As the use of noninvasive monitoring methods continues to expand, we believe our methodologies and results can be broadly applied to other ungulate monitoring programs.
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Affiliation(s)
- Cole A. Bleke
- Department of Wildland Resources, Utah State University, Logan, UT 84322, USA;
| | - Eric M. Gese
- U.S. Department of Agriculture, Wildlife Services, National Wildlife Research Center, Utah Field Station, Logan, UT 84322, USA;
| | - Juan J. Villalba
- Department of Wildland Resources, Utah State University, Logan, UT 84322, USA;
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2
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Bounaceur F, Benamor N, Bissaad FZ, Lasgaa F, Baghadid S, Rezigua F, Aulagnier S. Feeding ecology of the vulnerable aoudad (
Ammotragus lervia
) in north‐western Sahara. Afr J Ecol 2022. [DOI: 10.1111/aje.13079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Farid Bounaceur
- Equipe de recherche Biologie de la conservation en zones arides et semi‐arides, Laboratoire Agronomie Environnement, Faculté des Sciences et de Technologie, Département des Sciences de la Nature et de la Vie Université de Tissemesilt Tissemesilt Algeria
| | - Naceur Benamor
- Département des Sciences de la Nature et de la Vie Université Ibn Khaldoun Tiaret Algeria
| | - Fatima Zohra Bissaad
- Département des Sciences de la Nature et de la Vie Université M'hamed Bouguerra Boumerdes Algeria
| | - Faten Lasgaa
- Département des Sciences Naturelles École Normale Supérieure de Kouba Alger Algeria
| | - Sabah Baghadid
- Département des Sciences de la Nature et de la Vie Université Ibn Khaldoun Tiaret Algeria
| | - Faiza Rezigua
- Département des Sciences de la Nature et de la Vie Université Ibn Khaldoun Tiaret Algeria
| | - Stéphane Aulagnier
- Comportement et Ecologie de la Faune Sauvage I.N.R.A., Université de Toulouse Castanet‐Tolosan Cedex France
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3
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Orellana C, Castellaro G, Escanilla J, Parraguez VH. Use of Fecal Indices as a Non-Invasive Tool for Ruminal Activity Evaluation in Extensive Grazing Sheep. Animals (Basel) 2022; 12:974. [PMID: 35454221 PMCID: PMC9026375 DOI: 10.3390/ani12080974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 02/04/2023] Open
Abstract
For a simple, non-invasive evaluation of nutritional status of sheep kept under extensive grazing conditions on annual rangeland, fecal indices (2,6 diaminopimelic acid, nitrogen, and phosphorus) obtained during the vegetative, reproductive, and dry grassland phenological stages, were correlated with ruminal physiological biomarkers (volatile fatty acids and ruminal ammonia). Through correlation analysis and linear regressions, the degree of association between the variables studied was established. The fecal indices that presented the highest degree of association with ruminal variables were FN and FP, being highly correlated with the production of branched-chain volatile fatty acids (isobutyrate and isovalerate) and with ruminal ammonia (r ≥ 0.65), establishing simple linear regression equations of high significance (p ≤ 0.05). Therefore, fecal indices, especially fecal concentrations of N and P, could reflect the metabolism at the ruminal level and with it the availability of compounds for microbial growth, which would help to establish the nutritional status of sheep herds under extensive grazing conditions.
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Affiliation(s)
- Carla Orellana
- Doctoral Program in Forest, Agricultural and Veterinary Sciences, Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile;
| | - Giorgio Castellaro
- Department of Animal Production, Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (J.E.); (V.H.P.)
| | - Juan Escanilla
- Department of Animal Production, Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (J.E.); (V.H.P.)
| | - Víctor H. Parraguez
- Department of Animal Production, Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (J.E.); (V.H.P.)
- Department of Animal Biological Sciences, Faculty of Veterinary Sciences, University of Chile, Santiago 8820808, Chile
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4
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Diet preferences of common warthogs (Phacochoerus africanus) in Gassi and Haro Aba Diko controlled hunting areas, Western Ethiopia. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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5
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Lundgren EJ, Schowanek SD, Rowan J, Middleton O, Pedersen RØ, Wallach AD, Ramp D, Davis M, Sandom CJ, Svenning JC. Functional traits of the world's late Quaternary large-bodied avian and mammalian herbivores. Sci Data 2021; 8:17. [PMID: 33473149 PMCID: PMC7817692 DOI: 10.1038/s41597-020-00788-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 11/30/2020] [Indexed: 01/29/2023] Open
Abstract
Prehistoric and recent extinctions of large-bodied terrestrial herbivores had significant and lasting impacts on Earth's ecosystems due to the loss of their distinct trait combinations. The world's surviving large-bodied avian and mammalian herbivores remain among the most threatened taxa. As such, a greater understanding of the ecological impacts of large herbivore losses is increasingly important. However, comprehensive and ecologically-relevant trait datasets for extinct and extant herbivores are lacking. Here, we present HerbiTraits, a comprehensive functional trait dataset for all late Quaternary terrestrial avian and mammalian herbivores ≥10 kg (545 species). HerbiTraits includes key traits that influence how herbivores interact with ecosystems, namely body mass, diet, fermentation type, habitat use, and limb morphology. Trait data were compiled from 557 sources and comprise the best available knowledge on late Quaternary large-bodied herbivores. HerbiTraits provides a tool for the analysis of herbivore functional diversity both past and present and its effects on Earth's ecosystems.
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Affiliation(s)
- Erick J Lundgren
- Centre for Compassionate Conservation, School of Life Sciences, University of Technology Sydney, Ultimo, Australia.
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Biology, Aarhus University, Aarhus, Denmark.
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Aarhus, Denmark.
| | - Simon D Schowanek
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Biology, Aarhus University, Aarhus, Denmark.
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Aarhus, Denmark.
| | - John Rowan
- Department of Anthropology, University at Albany, Albany, NY, 12222, USA
| | - Owen Middleton
- School of Life Sciences, University of Sussex, Sussex, UK
| | - Rasmus Ø Pedersen
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Biology, Aarhus University, Aarhus, Denmark
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Aarhus, Denmark
| | - Arian D Wallach
- Centre for Compassionate Conservation, School of Life Sciences, University of Technology Sydney, Ultimo, Australia
| | - Daniel Ramp
- Centre for Compassionate Conservation, School of Life Sciences, University of Technology Sydney, Ultimo, Australia
| | - Matt Davis
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Biology, Aarhus University, Aarhus, Denmark
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Aarhus, Denmark
- Natural History Museum of Los Angeles County, Los Angeles, CA, 90007, USA
| | | | - Jens-Christian Svenning
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Biology, Aarhus University, Aarhus, Denmark
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Aarhus, Denmark
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Castellaro G, Orellana C, Escanilla J, Bastías C, Cerpa P, Raggi L. Botanical Composition and Diet Quality of the Vicuñas ( Vicugna vicugna Mol.) in Highland Range of Parinacota, Chile. Animals (Basel) 2020; 10:ani10071205. [PMID: 32708523 PMCID: PMC7401540 DOI: 10.3390/ani10071205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/26/2020] [Accepted: 07/06/2020] [Indexed: 01/28/2023] Open
Abstract
Simple Summary For the proper management of grazing wild ungulates, it is very important to know the botanical composition and quality of their selected diets. In the case of the vicuña, a wild camelid that lives in the Chilean highlands, there is little information related to these aspects. Therefore, in this work, the variations in the botanical composition and quality of their diets throughout the year were studied, which were estimated by analyzing the plant fragments found in the feces and the concentration of nitrogen within them. The vicuña mainly selects grasses from dry and wet grassland but is also capable of selecting other species, such as graminoids and dicotyledonous herbs. These plants contribute to obtaining a diverse and high-quality diet, this being an efficient foraging strategy to be able to consume a good quality diet, mainly in the months of high nutritional demand, which coincides with the summer rainy season. Abstract Understanding the botanical composition of herbivores’ diets and their nutritional quality is an important question in the development of sustainable strategies for the management of natural resources. In Chilean highland vicuña-grazed grasslands, there is little information in this regard and, therefore, this study aimed to determine the year-round profile of the diet’s botanical composition and quality. In highland grasslands, on an area of 21.9 ha, continuously grazed for 3.06 VU/ha/year (18°03′ S, 69°13′ W; 4425 m.o.s.l), twelve feces piles were sampled monthly and were analyzed through microhistology, and the nitrogen concentration [NF, OM basis] was determined. The botanical composition, diversity (J) and selectivity index (Ei) of the main species were estimated. Diets were composed of dry–grassland grasses (37.7%), wet–grassland grasses (36.6%), graminoids (14.3%) and forbs (10.2%). The diet diversity ranged from 0.79 (dry–winter) to 0.87 (wet–summer). The main dominant grassland species obtained negative Ei values. The annual mean value of [NF] was estimated as 1.82%, with a higher value in summer months (2.21%), which coincides with the physiological states of higher nutritional demand. The vicuñas behave like generalist ungulates, having a high degree of selectivity towards grass species, which mostly fulfill a nutritional role in subsistence and a functional role in survival, applying foraging strategies that allow them to obtain a better quality diet during the season of greatest nutritional demand.
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Affiliation(s)
- Giorgio Castellaro
- Faculty of Agriculture Sciences, University of Chile, Santiago 8820808, Chile; (C.O.); (J.E.); (C.B.); (P.C)
- Correspondence: ; Tel.: +56-229-785-705
| | - Carla Orellana
- Faculty of Agriculture Sciences, University of Chile, Santiago 8820808, Chile; (C.O.); (J.E.); (C.B.); (P.C)
| | - Juan Escanilla
- Faculty of Agriculture Sciences, University of Chile, Santiago 8820808, Chile; (C.O.); (J.E.); (C.B.); (P.C)
| | - Camilo Bastías
- Faculty of Agriculture Sciences, University of Chile, Santiago 8820808, Chile; (C.O.); (J.E.); (C.B.); (P.C)
| | - Patrich Cerpa
- Faculty of Agriculture Sciences, University of Chile, Santiago 8820808, Chile; (C.O.); (J.E.); (C.B.); (P.C)
| | - Luis Raggi
- Faculty of Veterinary Sciences, Universidad de Chile, Santiago 8820808, Chile;
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Orellana C, Parraguez VH, Arana W, Escanilla J, Zavaleta C, Castellaro G. Use of Fecal Indices as a Non-Invasive Tool for Nutritional Evaluation in Extensive-Grazing Sheep. Animals (Basel) 2019; 10:ani10010046. [PMID: 31881641 PMCID: PMC7022733 DOI: 10.3390/ani10010046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/02/2019] [Accepted: 12/15/2019] [Indexed: 12/31/2022] Open
Abstract
Simple Summary To adequately manage ruminants in extensive grazing, it is important to have non-invasive techniques to evaluate their nutritional status. Some of these techniques are based on the use of fecal indicators, such as the concentration of nitrogen, phosphorus and 2,6-diaminopimelic acid. These indices have been used in some species of wild ungulates, but their use has been limited in domestic ruminants. Hence, this research proposes the evaluation of fecal indices, as predictors of intake of dry matter, nitrogen and phosphorus in sheep that graze on Mediterranean annual grasslands. Abstract The aim of the present study was to assess the reliability of fecal indices as predictors of nutrient intake in sheep under extensive grazing conditions. Fecal concentrations of 2,6-diaminopimelic acid (DAPAf), nitrogen (FN) and phosphorous (FP) were determined in four sheep kept in an extensive grazing system on annual Mediterranean grassland in the vegetative, reproductive and dry phenological stages. Metabolizable energy (MEI), crude protein (CPI) and phosphorus (PI) intake were calculated using the botanical composition, metabolizable energy, crude protein and phosphorus concentrations in each vegetal species making up the animal’s diet. Significant differences were observed in the nutrient intake for each phenological stage (p < 0.0001). The highest MEI, CPI and PI were observed during the vegetative stage (p < 0.0001). FN and FP were different in each phenological stage (p < 0.0001), with significant correlations observed between these variables (r = 0.916; p < 0.0001). Regressions among nutrient intake and fecal indices were significant, except in the cases of DAPAf and MEI, and DAPAf and CPI. Based on these results, fecal indices could be used to estimate nutrient intake in sheep under extensive grazing on annual Mediterranean grassland.
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Affiliation(s)
- Carla Orellana
- Doctoral Program in Forest, Agriculture and Veterinary Sciences, Campus Sur, University of Chile, Santiago 8820808, Chile; (C.O.); (C.Z.)
| | - Víctor Hugo Parraguez
- Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (V.H.P.); (W.A.); (J.E.)
- Faculty of Veterinary Sciences, University of Chile, Santiago 8820808, Chile
| | - Wilmer Arana
- Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (V.H.P.); (W.A.); (J.E.)
| | - Juan Escanilla
- Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (V.H.P.); (W.A.); (J.E.)
| | - Carmen Zavaleta
- Doctoral Program in Forest, Agriculture and Veterinary Sciences, Campus Sur, University of Chile, Santiago 8820808, Chile; (C.O.); (C.Z.)
| | - Giorgio Castellaro
- Faculty of Agricultural Sciences, University of Chile, Santiago 8820808, Chile; (V.H.P.); (W.A.); (J.E.)
- Correspondence: ; Tel.: +56-229-785-705
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