Results 61 to 70 of about 7,652 (157)

Longevity and Growth of the Crabs Callinectes sapidus and Callinectes rathbunae (Decapoda: Portunidae) in Paraíso Tabasco Mexico

open access: yesActa Zoologica, EarlyView.
ABSTRACT Individual growth models are important in fisheries of natural populations and can be incorporated in production models to estimate their maximum sustainable yield. Blue crab species, Callinectes sapidus and Callinectes rathbunae were obtained in the Mecoacán lagoon, Paraíso, Tabasco Mexico by “nasa” and “yahual” nets. Biometric values such as
Candelario Jiménez‐Olivares   +5 more
wiley   +1 more source

Unravelling the phylogeny of armadillos and their kin (Mammalia, Xenarthra, Cingulata) combining morphological, molecular, and stratigraphic data

open access: yesCladistics, EarlyView.
Abstract Cingulata, a major lineage of Xenarthra, comprises extinct and extant armoured placental mammals that diversified throughout the Cenozoic. Despite extensive study, phylogenetic hypotheses based on morphological and molecular data remain incongruent, and no total evidence analysis has been conducted. Here, we integrate the largest morphological
Daniel M. Casali   +7 more
wiley   +1 more source

Recepción temprana de la teoría de la deriva continental y su competencia con las teorías rivales

open access: yesAsclepio: Revista de Historia de la Medicina y de la Ciencia, 2003
Alfred Lothar Wegener propuso la teoría de la deriva continental en 1912. Wegener ciertamente pensó que el desplazamiento explicaba mas datos paleontológicos y geofísicos que cualquiera de los programas de investigación establecidos. Desde luego, la gran
Carlos Pérez-Malváez   +2 more
doaj   +1 more source

Evaluating the protection status and exposure to warming of Caribbean reefs with high functional potential

open access: yesConservation Biology, EarlyView.
Abstract Over the past decades, climate change has emerged as a major threat to global biodiversity, negatively affecting the integrity and functioning of ecosystems and the benefits they provide to people. To mitigate these impacts, it is essential to identify climate refugia that support the persistence of the structure and function of reef ...
Sara M. Melo‐Merino   +4 more
wiley   +1 more source

Notas de la Dirección

open access: yesCaldasia, 1941
 Excursiones recientes del Instituto de Ciencias Naturales / Visitas de hombres de Ciencia a1 ...
Revista Caldasia
doaj  

Aprendizaje y actividad en ratas hormonalmente modificadas en sus primeros días de vida (Rattus norvegincus, Rodentia)

open access: yesActa Zoológica Lilloana, 1979
Se presenta un ejemplo de la dependencia de estrategias de comportamiento de mecanismos humorales a nivel individuo como subsistema.
Jorge Antonio Negroni
doaj  

Forest edges buffer effects of agricultural management on bee–plant interaction networks

open access: yesEcological Entomology, EarlyView.
Agricultural management effects: Organic and conventional crop margins host similar bee and plant species, but network structure differs: organic farms exhibit higher interaction diversity, conventional farms higher connectance. Role of forest edges: Native forest edges stabilize bee–plant networks by providing continuous floral resources and suitable ...
Samantha Marx de Castro   +6 more
wiley   +1 more source

Nuevas interpretaciones y adiciones a los anfibios y reptiles en la obra del naturalista Francisco Hernández (1517-1584)

open access: yesCiencia Ergo Sum, 2004
Aunque se ha escrito abundantemente acerca del naturalista Francisco Hernández, quien viajó a la Nueva España en el siglo XVI, consideramos que no se ha dado el crédito suficiente a su obra como naturalista y su impacto en la zoología de México y del ...
Gustavo Casas Andreu
doaj  

The effects of Bacillus thuringiensis var. israelensis (Bti) on tropical stream food webs vary between two consecutive dry seasons

open access: yesInsect Conservation and Diversity, EarlyView.
Bti application altered tropical stream food‐web structure through changes in macroinvertebrate functional feeding groups. Collector‐filterers and predators showed context‐dependent responses, with clearer direct and indirect effects detected in 2016, the year with higher rainfall.
Tatiana N. Docile   +4 more
wiley   +1 more source

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