Results 71 to 80 of about 128,093 (187)

Distinct Intra‐ and Interspecific Foraging Patterns of Stingless Bee Species as a Conservation Tool

Biotropica, Volume 57, Issue 5, September 2025.
In this study, we examined the foraging patterns of three rescued stingless bee species in the Bolivian Yungas using melissopalynology and plant–pollinator network analysis. We found distinct floral foraging patterns both within and among three stingless bee species in the Bolivian Yungas, suggesting niche partitioning at multiple levels.
Sissi Lozada‐Gobilard, Pamela Cristina Santana, Yamil Maidana‐Tuco, Elvis Otmar Gutierrez, Teresa Ortuño   +4 more
wiley   +1 more source

Comparison of post-cervical and cervical porcine artificial insemination in nulliparous and multiparous [PDF]

SPERMOVA, 2016
The post-cervical artificial insemination (PCAI) in sows increases semen performance compared to cervical artificial insemination (CAI). In Argentina the use of the PCAI is restricted to multiparous while it is not applied to nulliparous. The aim of this
Luchetti CG, Renoulin EG, Lombardo DM
doaj   +1 more source

Sexaje endoscópico de aves mediante un otoscopio [PDF]

, 1991
En el presente trabajo se describe una técnica para el sexaje de especies aviares carentes de dimorfismo sexual. Consiste en visualizar las gónadas del animal mediante la introducción de un otoscopio en una incisión laparotómica previamente realizada ...
Carrillo, J. A., Pascual, J.
core  

Conservation‐focused mapping of avian migratory routes using a pan‐European automated telemetry network

Conservation Biology, Volume 39, Issue 4, August 2025.
Abstract Accelerated biodiversity loss has destabilized functional links within and between ecosystems. Species that cross different ecosystems during migration between breeding and nonbreeding sites are particularly sensitive to global change because they are exposed to various, often ecosystem‐specific, threats.
Lucy Mitchell, Vera Brust, Thiemo Karwinkel, Susanne Åkesson, Dmitry Kishkinev, Gabriel Norevik, Tibor Szep, Anders Hedenström, Sander Lagerveld, Barbara Helm, Heiko Schmaljohann   +10 more
wiley   +1 more source

Neuronal Nuclei That Are Activated After an Offensive Encounter in Female Djungarian Hamster (Phodopus campbelli)

Aggressive Behavior, Volume 51, Issue 4, July 2025.
ABSTRACT Neural bases of aggression have been analysed mainly in rodent males, finding that the medial preoptic area (mPOA), bed nucleus of the stria terminalis (BNST) ventromedial hypothalamus (VMH), anterior hypothalamus (AHN), and medial amygdala (MeA) integrate the core aggression circuit.
Héctor Reyes‐Arenas, Luis Romero‐Morales, Brenda García‐Saucedo, Guadalupe Martínez‐Hernández, Carmen Álvarez‐Rodríguez, Agustín Carmona, Juana Luis   +6 more
wiley   +1 more source

Study of failures in a rabbit line selected for growth rate

World Rabbit Science, 2016
Selection for growth rate is negatively related with reproductive fitness. The aim of this work was to analyse the causes of fertility failure in rabbit does selected for growth rate and characterised for reproductive deficiencies (line R).
C. Naturil-Alfonso, R. Lavara, P. Millán, P.G. Rebollar, J.S. Vicente, F. Marco-Jiménez   +5 more
doaj   +1 more source

Egg clutch structure of Rhinella rumbolli (Anura: Bufonidae), a toad from the Yungas of Argentina, with a review of the reproductive diversity in Rhinella [PDF]

, 2015
Rhinella rumbolli is a poorly known, medium-sized toad endemic to the Yungas of Argentina. Recent fieldwork allowed observing its peculiar oviposition mode, which is described in this paper.
Baldo, Juan Diego, Faivovich, Julián, Pereyra, Martín Oscar, Vera Candioti, María Florencia   +3 more
core  

Modelación matemática del consumo de presas y el flujo de energía asociado a la reproducción de Rostrhamus sociabilis (Aves, Falconiformes) [PDF]

, 2017
El gavilán caracolero (Rostrhamus sociabilis) es un ave rapaz, residente permanente y común en Cuba, clasificada como de alto interés conservacionista en el Plan de Conservación de las Aves Acuáticas de Norteamérica, en parte debido a su dieta ...
Denis, D., Rodríguez–Ochoa, A.
core   +2 more sources

Prolactin Secretion During Postnatal Development in Artificial Rearing Rats (Rattus norvegicus)

Developmental Neurobiology, Volume 85, Issue 3, July 2025.
ABSTRACT During the lactation period, rat pups are fed by their mother and are with their siblings. In the pituitary, lactotrope and somatolactotrope cells increase in number during this period and are associated with milk‐borne factors. In the artificial rearing (AR) paradigm, pups are deprived of mother– and sibling–pup interactions and are fed ...
César G. Toriz, Ángel I. Melo, Brenda B. García‐Iglesias, Carmen Solano‐Agama, María de los Ángeles Martínez‐Muñoz, Elsa Liliana Aguirre‐Benítez, Verónica Rodríguez‐Mata, Dulce Ávila‐Rodríguez, Margarita González‐del‐Pliego, Armando Pérez‐Torres, Ismael Jiménez‐Estrada, Benjamín Floran‐Garduño, María Eugenia Mendoza‐Garrido   +12 more
wiley   +1 more source

Morphological and Histological Variations of the Reproductive Organs During the Annual Cycle in a Neotropical Bat: Peters' Ghost‐Faced Bat Mormoops megalophylla (Chiroptera: Mormoopidae)

Journal of Morphology, Volume 286, Issue 7, July 2025.
Mormoops megalophylla exhibits a seasonal monoestrous reproductive pattern. Spermatogenesis and folliculogenesis occurs from October to December, mating takes place in November–December, gestation lasts from December to May, and lactation extends from June to September.
Gihovani Ademir Samano‐Barbosa, Ixchel Rojas‐Martínez, Sergio Leonardo Porto‐Ramírez, Fernando Salgado‐Mejia, Ahiezer Rodríguez‐Tobón, Arturo Salame‐Méndez, Edith Arenas‐Ríos, Luis Manuel Guevara‐Chumacero, Ricardo López‐Wilchis   +8 more
wiley   +1 more source