Results 31 to 40 of about 5,244 (196)

Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]

open access: yes, 2013
Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza   +2 more
core   +1 more source

Hatching Strategies in Monogenean (Platyhelminth) Parasites that Facilitate Host Infection [PDF]

open access: yes, 2011
In parasites, environmental cues may influence hatching of eggs and enhance the success of infections. The two major endoparasitic groups of parasitic platyhelminths, cestodes (tapeworms) and digeneans (flukes), typically have high fecundity, infect more
Armstrong   +13 more
core   +1 more source

The Spermatophore in Glossina morsitans morsitans: Insights into Male Contributions to Reproduction. [PDF]

open access: yes, 2016
Male Seminal Fluid Proteins (SFPs) transferred during copulation modulate female reproductive physiology and behavior, impacting sperm storage/use, ovulation, oviposition, and remating receptivity.
Abd-Alla, Adly MM   +8 more
core   +2 more sources

Foliculogénesis Ovárica en la Raya Marmorada, Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) [PDF]

open access: yes, 2011
Los Condrictios se han convertido en un recurso económico importante en las últimas décadas, siendo Argentina uno de los países que más explota tiburones y rayas, incluso a niveles que exceden los límites de varias especies.
Díaz Andrade, María Constanza   +3 more
core   +1 more source

The complete mitochondrial genome of Eremias yarkandensis (Reptilia, Squamata, Lacertidae) from Kyrgyzstan

open access: yesMitochondrial DNA. Part B. Resources, 2022
The Yarkand racerunner, Eremias yarkandensis Blandford, 1875, is only distributed in China and Kyrgyzstan. Its complete mitogenome was determined by next-generation sequencing for the first time.
Song Wang   +4 more
doaj   +1 more source

Evolution of lizard viviparity

open access: yesNature Ecology & Evolution, 2021
Analysis of oviparous and viviparous individuals of the common lizard reveals the genetic architecture of pregnancy.
openaire   +4 more sources

Climate, geographic distribution and viviparity in Liolaemus (Reptilia; Squamata) species: when hypotheses need to be tested [PDF]

open access: yes, 2014
La distribución de los reptiles, dada su dependencia de la temperatura, puede verse restringida en función del clima. En particular, se han planteado tres hipótesis que vinculan el clima con la distribución y el viviparismo en las especies de reptiles: i)
Abdala, Cristian Simón   +5 more
core   +3 more sources

The complete mitochondrial genome of Eremias dzungarica (Reptilia, Squamata, Lacertidae) from the Junggar Basin in Northwest China

open access: yesMitochondrial DNA. Part B. Resources, 2021
The complete mitochondrial genome (mitogenome) of Eremias dzungarica from the Junggar Basin in Northwest China was determined for the first time by next-generation sequencing.
Song Wang   +3 more
doaj   +1 more source

Harvest Season and Morphological Variation of Canistel (Pouteria campechiana) Fruit and Leaves Collected in Different Zones of Mexico

open access: yesHorticulturae, 2023
Canistel (Pouteria campechiana (Kunth) Baehni; yellow sapote, canistel) is an edible fruit that is native to Mexico; the tree is used as an ornamental and medicinal plant.
Karen M. Granados-Vega   +5 more
doaj   +1 more source

Embryos of the viviparous dermapteran, Arixenia esau develop sequentially in two compartments: terminal ovarian follicles and the uterus.

open access: yesPLoS ONE, 2013
Three main reproductive strategies have been described among insects: most common oviparity, ovoviviparity and viviparity. In the latter strategy, the embryonic development takes place within the body of the mother which provides gas exchange and ...
Waclaw Tworzydlo   +2 more
doaj   +1 more source

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