Results 91 to 100 of about 3,096 (199)

Waratah theft in Brisbane Water National Park - an analysis of the blue paint poaching reduction program [PDF]

open access: yes, 2010
The flowers of Waratahs, Telopea speciosissima (family Proteaceae) are regularly harvested illegally from natural bushland, particularly close to urban areas such as the New South Wales Central Coast.
Beckers, Doug, Offord, Catherine A.
core  

The Significance of Protandry in Social Hymenoptera

open access: yesThe American Naturalist, 1983
An optimization model is constructed for an annual eusocial wasp or bee which may at any time produce workers and/or male and female reproductives. The optimal policy is to produce only workers at first, and at some critical time switch to producing only reproductives, confirming the conclusion of Macevicz and Oster (1976).
openaire   +2 more sources

A putative case of honeyeater‐driven sympatric speciation associated with corolla shape shift resulting in a new New Caledonian Oxera species

open access: yesJournal of Systematics and Evolution, Volume 63, Issue 6, Page 1299-1311, November 2025.
Investigating the morphology and ecology of two sympatric species of the Oxera (Lamiaceae) genus in New Caledonia and their respective putative pollinators showed that two species of honeyeaters are likely the preferred pollinators because of their respective sizes, bill and tongue lengths, and behavior.
Gildas Gâteblé   +5 more
wiley   +1 more source

New data on pollination of Iris sibirica L. (Iridaceae)

open access: yesБіологічні студії, 2014
The flowering period in the population of Iris sibirica in Drogobych district of Lviv region lasts for about 4 weeks, flowering of a five-flowered generative shoot – 10–12 days, flowering of a flower – about 32 hours.
A. Odintsova, Ch. Skrypec
doaj   +1 more source

Reproductive biology of carpenter seabream (Argyrozona argyrozona) (Pisces: Sparidae) in a marine protected area [PDF]

open access: yes, 2005
The carpenter seabream (Argyrozona argyrozona) is an endemic South African sparid that comprises an important part of the handline fishery. A three-year study (1998−2000) into its reproductive biology within the Tsitsikamma National Park revealed that ...
Brouwer, Stephen L., Griffiths, Marc. H.
core  

Phenology determines seasonal variation in ectoparasite loads in a natural insect population [PDF]

open access: yes, 2010
1. The extent to which individuals are parasitised is a function of exposure to parasites and the immune response, which in ectotherms may be associated with temperature. 2.
Andrés   +68 more
core   +1 more source

Reproductive Ecology of Loeselia mexicana (Polemoniaceae): Protandry, Self-Incompatibility and a Generalized Pollination System Challenge Traditional Ornithophilous Assumptions

open access: yesEcologies
Loeselia mexicana (Polemoniaceae) is a Mexican shrub with significant medicinal value since pre-Hispanic times. Despite its ethnobotanical importance and apparent role in supporting pollinator communities, detailed information about its reproductive ...
Liliana Mora-Hernández   +4 more
doaj   +1 more source

Life Cycle of \u3ci\u3eIsoperla Lata\u3c/i\u3e (Plecoptera: Perlodidae) in a Central Wisconsin Trout Stream [PDF]

open access: yes, 2018
Monthly qualitative samples of Isoperla lata Frison were made from January 1992 to June 1993 in Ripley Creek, a small second order trout stream in Lincoln County Wisconsin. Additional collecting and an in-stream hatching experiment were conducted in 1994.
Sandberg, John B, Szczytko, Stanley W
core   +2 more sources

Multiple mating opportunities boost protandry in a pied flycatcher population

open access: yesBehavioral Ecology and Sociobiology, 2011
Peer ...
Canal, David   +2 more
openaire   +2 more sources

Male-biased gonadal differentiation in hatchery-reared blackthroat seaperch Doederleinia berycoides and development of molecular markers to elucidate sex differentiation mechanisms

open access: yesFrontiers in Marine Science
In the seed production of commercially valuable blackthroat seaperch Doederleinia berycoides, the sex ratio is often skewed toward males. To address this imbalance, several environmental and dietary approaches have been examined; however, the issue ...
Mako Tori   +8 more
doaj   +1 more source

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