Results 11 to 20 of about 2,793,995 (298)

The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata)

open access: yesBrazilian Journal of Biology, 2005
Morphological changes in the sexual organs of the pulmonates were observed throughout a year and correlated with reproductive-cycle periods. Reproductive-organ weights of the snail Megalobulimus abbreviatus were recorded seasonally and gonad sections ...
A. C. M. Horn, A. Achaval, D. M. Zancan
doaj   +2 more sources

Characterisation of antigen-presenting cells in the murine female reproductive tract and its draining lymph nodes [PDF]

open access: yes, 2011
Despite the global burden of sexually transmitted diseases, the immunology of the female reproductive tract is poorly understood. An understanding of how the distribution of antigen presenting cells in the tissue and cross talk between cell types both ...
Roche, Rebecca
core   +6 more sources

Assessing the impact of xenoestrogen exposure during larval development on the reproductive potential of the amphibian Silurana tropicalis in a partial life-cycle model [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.Evidence suggests that chemicals acting as endocrine disruptors can modulate amphibian sex differentiation and induce sex reversal and gonadal abnormalities.
Larroze, Séverine Brigitte
core   +6 more sources

Seasonal changes in the reproductive cycle and condition index of the surf clam Mactra stultorum (Mollusca: Bivalvia) in the Gulf of Gabes, Tunisia

open access: yesOceanological and Hydrobiological Studies, 2023
The reproductive biology of Mactra stultorum from the Gulf of Gabes was investigated monthly during a one-year period (2017). This study is the first study examining its reproductive biology during one-year in the south of Tunisia.
Derbali Abdelkarim
doaj   +1 more source

Nutrition regulates reproductive senescence and terminal investment across the reproductive cycle of a long-lived mammal. [PDF]

open access: yesSci Rep
Deterioration in nutritional condition with aging could reduce reproductive success but coincides with declines in residual reproductive potential, thus invoking opposing expectations for late-life reproduction.
LaSharr TN   +11 more
europepmc   +2 more sources

Effect of humidity on the life cycle and reproduction of Dermacentor reticulatus (Ixodidae) in laboratory mice [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2003
The reproductive cycle of Dermacentor reticulatus (Ixodidae) is described in this paper. Experimental infestation was carried out on immobilized (fixed) RAP mice and those that could move freely. Dermacentor reticulatus (D.
Darabus Gh.   +4 more
doaj   +1 more source

Inflorescence Emergence and Flowering Response of Olive Cultivars Grown in Olive Reference Collection of Portugal (ORCP)

open access: yesPlants, 2023
In olive trees, fluctuations in the onset of phenological stages have been reported due to weather conditions. The present study analyses the reproductive phenology of 17 olive cultivars grown in Elvas (Portugal) in 3 consecutive years (2012–2014 ...
Carla Inês   +2 more
doaj   +1 more source

Long distance dispersal and oceanographic fronts shape the connectivity of the keystone sponge Phakellia ventilabrum in the deep northeast Atlantic

open access: yesFrontiers in Marine Science, 2023
Little is known about dispersal in deep-sea ecosystems, especially for sponges, which are abundant ecosystem engineers. Understanding patterns of gene flow in deep-sea sponges is essential, especially in areas where rising pressure from anthropogenic ...
Sergi Taboada   +30 more
doaj   +1 more source

Blood biochemical parameters of simmental cows in different phases of reproductive cycle [PDF]

open access: yesVeterinarski Glasnik, 2011
This paper presents the values of blood biochemical parameters of Simmental cows (n = 60), divided into five groups (dry cows, early puerperium, late puerperium, the fifth month of lactation, and cows with an extended service period). The ration
Radović Bisa   +3 more
doaj   +1 more source

Reproductive cycle of Geukensia demissa (Bivalvia: Mytilidae) on a beach at Nazaret, El Moján, Zulia State, Venezuela

open access: yesCiencias Marinas, 2005
The mytilid Geukensia demissa invaded Lake Maracaibo and since it is a new species at this location, little is known about its reproductive biology.
María Báez   +2 more
doaj   +1 more source

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