Results 81 to 90 of about 3,322,307 (330)

Morphology of three Brazilian species of Semiotus (Coleoptera, Elateridae, Semiotinae)

open access: yesIheringia: Série Zoologia, 2004
The morphology of Semiotus distinctus (Herbst, 1806), S. intermedius (Herbst, 1806) and S. ligneus (Linnaeus, 1767), including mouthparts and male and female genitalia, is described and illustrated. A comparative analysis of the characters related to the
Maria Helena Parreira, Sônia A. Casari
doaj   +1 more source

Courtship in Drosophila Mosaics: Sex-Specific Foci for Sequential Action Patterns [PDF]

open access: yes, 1976
Mosaic fate mapping is used to locate the foci determining sex-specific steps in the mating behavior of Drosophila. Male performance of following females and displaying wing vibration toward them requires that a focus inside the head be constituted of ...
Benzer, Seymour, Hotta, Yoshiki
core   +2 more sources

Alkaline–Acid Intestine Environment Controlled by A Carbonic Anhydrase Gene Influences Synthesis of Sex Pheromone by Symbionts

open access: yesAdvanced Science, EarlyView.
A model proposing that elevated rectal expression of CAh1 in males alkalinizes the environment to regulate Bacillus production of a male‐specific sex pheromone. Abstract The intricate interplay between animals and their intestinal microbes is pivotal in shaping various aspects of animal biology.
Shiyu Gui   +9 more
wiley   +1 more source

Do Consumers Value Diversity in Agriculture? A Choice Experiment

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Farm ownership in the US today is racially and ethnically homogeneous. Diverse farmers and ranchers make up less than 10% of all producers, they tend to be less financially stable and have tighter profit margins. In the past few years, both government and industry programs have aimed to increase the participation and profitability of diverse ...
Maria Kalaitzandonakes   +2 more
wiley   +1 more source

The male genitalia of ants: musculature, homology, and functional morphology (Hymenoptera, Aculeata, Formicidae)

open access: yes, 2013
The genitalia of male ants are interpreted in the context of the broader Hymenoptera. For the first time muscle homologies are established for twenty six species of ants in nine subfamilies: Amblyoponinae, Cerapachyinae, Dolichoderinae, Ecitoninae ...
B. Boudinot
semanticscholar   +1 more source

The effects of agricultural machinery services and land fragmentation on farmers' straw returning behavior

open access: yesAgribusiness, EarlyView.
Abstract Straw returning is important for rural ecological management and sustainable agricultural development. Using farm survey data for Anhui Province, China, in 2020, we applied the double‐hurdle model to investigate the impact of agricultural machinery services and land fragmentation on farmers' straw‐returning behavior, and to explore the ...
Xin Wang, Yanping Song, Wei Huang
wiley   +1 more source

Incidence and etiological agents of genital dermatophytosis in males [PDF]

open access: yesMedicinski Glasnik, 2015
Aim To determine the incidence and etiological agents of dermatophytosis of male genitalia in Sarajevo area, Bosnia and Herzegovina, during a 5-year period (2009-2013).
Asja Prohić   +2 more
doaj  

Auto-spermatophore extrusion in male crickets [PDF]

open access: yes, 2003
The reproductive cycle of the male cricket consists of the mating stage and the sexually refractory stage. The latter is further divided into the first refractory stage (RS1) from spermatophore extrusion in copulation to spermatophore preparation after ...
Kumashiro, Mikihiko   +2 more
core   +1 more source

Beyond subsistence? The role of rural cooperatives in driving smallholder commercialization in Ethiopia

open access: yesAgribusiness, EarlyView.
Abstract The transition from subsistence to market‐oriented agriculture holds the potential to boost rural economic progress and improve the well‐being of the rural poor in developing countries. Despite this potential, there is limited understanding of the key drivers for smallholder commercialization. In this study, we utilize comprehensive three‐wave
Abebayehu Girma Geffersa   +1 more
wiley   +1 more source

A new pygmy leafmining moth, Stigmella tatrica sp. n., from the alpine zone of the Tatra Mountains (Lepidoptera, Nepticulidae)

open access: yesNota Lepidopterologica, 2017
Stigmella tatrica sp. n. is described from moths taken in the alpine zone of the Tatra Mountains in Slovakia. The new species is similar to several other montane species of Stigmella Schrank, 1802 in the S.
Zdenko Tokár   +2 more
doaj   +3 more sources

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