Distribution of the Pygmy Mouse, Baiomys taylori, in North-Central Texas

Hart, Billy J.

doi:10.2307/3670385

Cited by 6 publications

(2 citation statements)

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“…Locality records for the Northern pygmy mouse ( B . taylori ) were obtained from Stickel & Stickel (1949), Hart (1972), Hunsaker et al. (1959), Packard & Judd (1968), Hall (1981), Gust & Schmidly (1986), Killion et al.…”

Section: Methodsmentioning

confidence: 99%

Ecological niche modelling as an exploratory tool for identifying species limits: an example based on Mexican muroid rodents

Martínez-Gordillo

Rojas-Soto

Monteros

2010

J of Evolutionary Biology

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Niche conservatism theory suggests that recently diverged sister species share the same ecological niche. However, if the ecological niche evolves as part of the speciation process, the ecological pattern could be useful for recognizing cryptic species. In a broad sense systematists agree that the niche characters could be used for species differentiation. However, to date such characters have been ignored. We used the genetic algorithm for rule‐set production for modelling the ecological niche as a means of inferring ecological divergence in allopatric populations of muroid rodents for which taxonomic identity is uncertain. Our results show that niche differentiation is significant in most of the identified phylogroups. The differentiation is likely associated with natural evolutionary units, which can be identified by applying species concepts based on phylogenetic and ecological patterns (e.g. phylogenetic, cohesive, evolutionary). Even so, the role of the niche partition within phylogenetic reconstruction may be a limited one.

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Section: Methodsmentioning

confidence: 99%

Ecological niche modelling as an exploratory tool for identifying species limits: an example based on Mexican muroid rodents

Martínez-Gordillo

Rojas-Soto

Monteros

2010

J of Evolutionary Biology

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“…In particular, interactions between migratory and resident raptors in Texas, one of the main migratory routes of birds, have been scarcely studied. Likewise, little is known about the prey populations of vertebrate predators in northern Texas (Dalquest 1968;Schmidly & Bradley 2016) beyond their presence and the fact that they are changing in distribution (Hunsaker et al 1959;Hart 1972;Austin & Kitchens 1986;Cleveland 1986;Tumlison et al 1993;Green & Wilkins 2010), population dynamics (Wilkins 1995), and habitat relationships (Hanchey & Wilkins 1998). In this study, we examined the diet of two owl species, the barn owl (Tyto alba) and the long-eared owl (Asio otus), in a protected habitat island of vegetation in the Dallas-Fort Worth Metropolitan (DFW) area and compared their winter trophic ecology through remains found in pellets.…”

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confidence: 99%

Comparative Diet Analysis of Barn Owl (Tyto Alba) and Long- Eared Owl (Asio Otus) in a Habitat Island in North-Central Texas

Jiménez

Jones

Stoddart

et al. 2020

The Texas Journal of Science

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Predator-prey interactions often define the coexistence of species in space and time. In this research, we are filling a regional gap in knowledge of diet composition of the barn owl ( Tyto alba ) and the long-eared owl ( Asio otus ). The study was conducted at the Lewisville Lake Environmental Learning Area (LLELA), a patch of tallgrass prairie and post oak forest surrounded by areas with large anthropogenic modifications in north-central Texas. We examined the remains found in owl pellets collected September 2016 to March 2017. Small mammals, mainly rodents, constituted 100% of the T. alba and 98.5% of the A. otus diet. The hispid cotton rat ( Sigmodon hispidus ) was the most common prey detected (68.2% for T. alba and 89.0% for A. otus ). Diet niche breadth of T. alba was broader than that of A. otus (0.47 and 0.06, respectively), whereas mean prey size was smaller in the T. alba diet. Diet overlap between these owls was high (0.96), likely because they hunt similarly at night, on the wing, and the prey species have limited diversity. Most rodents eaten were juveniles and the sex ratio of prey was even in both owls’ diets. We highlight the value of conducting studies in such a unique and relatively pristine environment in the face of multiple threats. Additionally, although the occurrence of A. otus is rare and infrequent in the study area, we were still able to detect a difference in diet between the ubiquitous T. alba and A. otus.

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Phylogeographic assessment of the northern pygmy mouse, Baiomys taylori

Light¹,

Ostroff²,

Hafner³

2016

Journal of Mammalogy

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The northern pygmy mouse, Baiomys taylori, occurs throughout the Trans-Mexican Volcanic Belt and southern Altiplano of central Mexico and extends northward in 3 projections into northern Mexico and the United States. We used mitochondrial DNA (from the cytochrome-b and NADH dehydrogenase 2 genes) and morphological data to assess diversity within B. taylori across its geographic range in relation to recognized subspecies and putative physiographic filter-barriers. Our results indicate 5 distinct mitochondrial clades despite little morphological variation across the species’ geographic range. The Sierra Madre Oriental and Sierra Madre Occidental separate clades representing the eastern (Gulf coastal lowlands), central (Altiplano), and Pacific coastal lowlands, which appear to be divided into 3 major mitochondrial clades. Based on a preliminary analysis of cranial morphology, we are able to reject the Balcones Escarpment of Texas as an impediment to the well-documented recent northern expansion of the species, while we are unable to reject a causal role of filter-barriers elsewhere in subspecific differentiation. Revision of subspecific taxonomy must await further genetic sampling, particularly along the western and southeastern portions of the species’ distribution. El ratón pigmeo norteño, Baiomys taylori, se distribuye a través del Eje Volcánico Transmexicano y la parte sur del Altiplano del centro de México y se extiende hacia el norte de México y los Estados Unidos en tres direcciones. Utilizamos ADN mitocondrial (del citocromo-b y del gen NADH deshidrogenasa) y datos morfológicos para evaluar la diversidad dentro de B. taylori a través de su rango geográfico en relación con las subespecies reconocidas y las supuestas barreras-filtro fisiográficas. Nuestros resultados indican 5 clados mitocondriales distintos a pesar de la escasa variación morfológica a lo largo de su rango geográfico. La Sierra Madre Oriental y la Sierra Madre Occidental separan los clados representantes de las tierras bajas del este (tierras bajas del Golfo), del centro (Altiplano), y las tierras bajas del Pacífico, que parecen estar divididas en 3 clados mitocondriales principales. Basados en un análisis preliminar de la morfología craneal, pudimos rechazar el Escarpe de Balcones de Texas como un impedimento a la bien documentada expansión norteña de la especie, mientras que no fue posible rechazar el rol causal de las otras barreras-filtro en la diferenciación subespecífica. La revisión de la taxonomía subespecífica deberá esperar un mayor muestreo genético, en particular a lo largo de las porciones oeste y sureste de la distribución de la especie.

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Distribution of the Pygmy Mouse, Baiomys taylori, in North-Central Texas

Cited by 6 publications

References 0 publications

Ecological niche modelling as an exploratory tool for identifying species limits: an example based on Mexican muroid rodents

Ecological niche modelling as an exploratory tool for identifying species limits: an example based on Mexican muroid rodents

Comparative Diet Analysis of Barn Owl (Tyto Alba) and Long- Eared Owl (Asio Otus) in a Habitat Island in North-Central Texas

Phylogeographic assessment of the northern pygmy mouse, Baiomys taylori

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