Individual differences in protandry, sexual selection, and fitness [PDF]
Behavioral Ecology, 2008 Protandry is the difference in arrival date between males and females, with competition among males for access to preferred territories (the rank advantage hypothesis) or mating success (the mate opportunity hypothesis) supposedly driving the evolution of protandry. The fitness costs and benefits of protandry accruing to individuals differing in degree
Anders P. Møller +4 more
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Experimental evidence that sperm maturation drives protandry in an ectotherm [PDF]
Oecologia, 2016 Protandry, i.e., the earlier arrival to breeding areas of males than females, has attracted a lot of scientific attention. However, evidence for the evolutionary hypotheses of protandry is surprisingly scarce. Here, we experimentally manipulate the time of emergence from hibernation of males, relative to females, in the common lizard, Zootoca vivipara.
Breedveld Merel C, Fitze Patrick S
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Diverse flies (Diptera) likely pollinate an alpine death camas, Anticlea elegans (Melanthiaceae)
Journal of Pollination EcologySeveral populations of a species of death camas (Anticlea elegans) (Melanthiaceae) were found growing and flowering above treeline in the remote Lemhi Mountains of southeastern Idaho USA.
James H Cane
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Animals, 2019 The objective of the present study was to analyze the phenotypic stability of sex after sex differentiation in the Yesso scallop, which is a gonochoristic species that has been described as protandrous.
Kazue Nagasawa +2 more
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Hormonal influence on photocontrol of the protandry in the genus Helianthus [PDF]
Journal of Experimental Botany, 2000 Under natural photoperiodic conditions protandry in hermaphrodite disc flowers of sunflower (Helianthus annuus L.) is determined by the different elongation rates of the style and filaments. The elongation of the filament and style starts simultaneously after the daily dark period, but the style growth rate is slower.
G Lobello +4 more
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Duodichogamy and androdioecy in the Chinese Phyllanthaceae Bridelia tomentosa [PDF]
, 2007 Flowering plants commonly separate male and female function in time, but rarely are the two stages synchronized within and among individuals. One such temporal mating system is duodichogamy in which each plant produces two batches of male flowers that ...
Luo, Shixiao +2 more
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Monogamous mating system and sexuality in the gobiid fish, Trimma marinae (Actinopterygii: Gobiidae) [PDF]
, 2017 The mating system and sexuality of the gobiid fish Trimma marinae were investigated in aquaria and by gonadal histological examination. The male to female sex ratio in the study aggregation was female-biased (14:27), and females were larger than males. T.
Akihiko Shinomiya +5 more
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Protandry and sexual dimorphism in trans-Saharan migratory birds [PDF]
Behavioral Ecology, 2004 Earlier arrival to reproductive sites of males relative to females (protandry) is widespread among migratory organisms. Diverse mechanisms have been proposed that may select for protandry, including competition for limiting resources (e.g., territories) or mates.
D. Rubolini, F. Spina, N. Saino
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Phenotypic divergence may facilitate co‐occurrence in Acanthopagrus species (Family: Sparidae)
Journal of Fish Biology, EarlyView.Abstract Understanding why closely related species co‐occur is one fundamental question in ecology. The seabream genus Acanthopagrus Peters, 1855 (Sparidae) is broadly distributed across the Indo‐Pacific, with four species, A. arabicus and A. sheim (yellowfin group), and A. bifasciatus and A.
Yu‐Jia Lin
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Male emergence schedule and dispersal behaviour are modified by mate availability in heterogeneous landscapes: evidence from the orange-tip butterfly [PDF]
PeerJ, 2015 Protandry (prior emergence of males) in insect populations is usually considered to be the result of natural selection acting directly on eclosion timing.
W James Davies, Ilik J. Saccheri
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