Determination of the semen quality in male partners of infertile couples in Aminu Kano Teaching Hospital, Kano: A three year review

Context Male infertility contributes a lot to the causes of infertility among couples attending Gynaecology clinics in our environment.Objectives: To determine semen quality in male partners of infertile couples attending Gynaecology Clinic in Aminu Kano Teaching Hospital, and to describe the pattern of abnormality found among the semen samples.Met

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Integrating Causal and Evolutionary Analysis of Life-History Evolution: Arrival Date in a Long-Distant Migrant

In migratory species, the timing of arrival at the breeding grounds is a life-history trait with major fitness consequences.The optimal arrival date varies from year-to-year, and animals use cues to adjust their arrival dates to match this annual variation.However, which cues they use to time their arrival and whether these cues actually predict th

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