Results 51 to 60 of about 2,228 (117)
Increased adaptability to rapid environmental change can more than make up for the two-fold cost of males [PDF]
, 2018 The famous "two-fold cost of sex" is really the cost of anisogamy -- why should females mate with males who do not contribute resources to offspring, rather than isogamous partners who contribute equally? In typical anisogamous populations, a single very fit male can have an enormous number of offspring, far larger than is possible for any female or ...
arxiv +1 more source
Revista Brasileira de Entomologia, 2019 Mycodrosophila is a cosmopolitan genus of Drosophilidae that comprises approximately 130 species with mycophagous habitats. In this study, we described a new species of Mycodrosophila based on morphological traits and included details of the male ...
Mayara Ferreira Mendes +1 more
doaj
A new species of Fannia (Diptera, Fanniidae) from Yunnan, China [PDF]
ZooKeys, 2019 A new species of the genus Fannia (Diptera, Fanniidae) is described from Yunnan, China, namely Fannia baihualingensis sp. nov. The male habitus as well as terminalia are documented with focus-stacked photographs. A detailed comparison of new species with
Li-ping Yan +3 more
doaj +3 more sources
The International Journal of Developmental Biology, 2004 The Drosophila adult male terminalia originate from the genital disc. During the pupal stages, the external parts of terminalia evert from two ventral stalks; the everted left and right dorsal halves fuse at the dorsal midline. At the same time the male terminalia perform a 360 clockwise rotation.
Macias, Ana Maria +5 more
openaire +5 more sources
Evolution of female choice and age-dependent male traits with paternal germ-line mutation [PDF]
arXiv, 2013 Several studies question the adaptive value of female preferences for older males. Theory and evidence show that older males carry more deleterious mutations in their sperm than younger males carry. These mutations are not visible to females choosing mates.
arxiv
Review of the New World genus Cholomyia (Diptera, Tachinidae), with a new species from Costa Rica
Revista Brasileira de Entomologia, 2016 The tachinid genus Cholomyia presents Neotropical and Nearctic distribution with three species: C. acromion (Wiedemann, 1824), C. filipes (Walker, 1857), and C. inaequipes Bigot, 1884. In the present paper, all species are reviewed and redescribed, and a
Marcelo Domingos de Santis +1 more
doaj +3 more sources
ZooKeys, 2011 The type specimens of Neodiogmites hirtuosus (Wiedemann, 1821), two males and one female, deposited at the Museum für Naturkunde der Humboldt-Universität (ZMHB), Berlin were examined.
Edgar Alvim +2 more
doaj +1 more source
Parasitology, 1950 This paper describes the terminalia of two abnormal males of the genus Sarcophaga Meigen (Sarcophaga similis Meade and S. hirtipes Wiedemann var. orchidea Böttcher) which appear to throw light on the interrelationships of the inverted, curvilinear and circumverted types of terminalia in Diptera.
openaire +3 more sources
Subacute toxicity study of aqueous root extract of Terminalia schimperiana in male Wistar rats
Toxicology Reports, 2019 The effect of administration of aqueous extract of Terminalia schimperiana root, "a medicinal plant", on some 'biomarker' enzymes, hematology parameters, liver function and kidney function parameters of rat cellular system was investigated. The aqueous extract was administered orally to male wistar rats (Rattus norvegicus) at various doses (1000, 2000,
O.S. Awotunde +3 more
openaire +3 more sources
New species of Pseudoptilolepis Snyder, 1949 (Diptera: Muscidae) from Brazil
Papéis Avulsos de Zoologia, 2018 Pseudoptilolepis Snyder, 1949 (Diptera: Muscidae) is a Neotropical genus with 10 known species. The present paper describes a new species from Parque Nacional do Itatiaia (PNI). Male and female terminalia were dissected and illustrated.
Leandro Silva Barbosa +2 more
doaj +1 more source