Results 1 to 10 of about 505 (132)
Sex Determination in Sponges. [PDF]
Mol Reprod DevABSTRACT Sex determination in Porifera remains one of the least understood aspects of early metazoan biology despite the group's key phylogenetic position. Sponges display exceptional diversity in sexual systems—ranging from stable gonochorism to sequential hermaphroditism and sex reversal—yet lack morphological dimorphism and any discrete gonadal ...
Lorente-Sorolla JM, Riesgo A.
europepmc +2 more sources
Competition for waterborne food resources among tropical shallow-water sponges. [PDF]
EcologyAbstract A recurrent theme in marine ecology is that the community dynamics of sessile, suspension‐feeding animals is primarily limited by the availability of space, but in some habitats, filtration by these organisms may locally deplete water column resources, setting the stage for exploitative competition for food.
Butler MJ, McMurray SE, Pawlik JR.
europepmc +2 more sources
The Potential Habitat of <i>Liparis campylostalix</i> (Orchidaceae) in China Under Climate Change Scenario Predicted by MaxEnt Model. [PDF]
Ecol EvolThis study used the Maxent model, ENMTools, and ArcGIS to predict L. campylostalix's ecological pattern in China, based on its geographical distribution and environmental factors. Under current climate, it mainly distributes in Liaoning, Jilin, Shandong (suitable area 1.845 million km2), with four key variables affecting it: annual precipitation (27.9%)
Deng M +5 more
europepmc +2 more sources
Genomic analysis reveals deep population divergence in the water snake Trimerodytes percarinatus (Serpentes, Natricidae). [PDF]
Ecol EvolIn this work, we used both mtDNA data and SNP data to explore the population genetic structure, genetic diversity, and evolutionary history of a widespread, semiaquatic, non‐venomous snake Trimerodytes percarinatus. We hope our present study will be of wide interest to systematic researchers and phylogeographers.
Lyu B +9 more
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Semina: Ciências Agrárias, 2022 Os processos de conservação de volumosos têm como objetivo fundamental manter a qualidade nutritiva das forrageiras, para que essas possam suprir a baixa disponibilidade e qualidade de alimento volumoso em épocas desfavoráveis.
Kácia Carine Scheidt +6 more
doaj +1 more source
Recovery of insular seabird populations years after rodent eradication
Conservation Biology, Volume 37, Issue 3, June 2023., 2023 Abstract Seabirds have been particularly affected by invasive non‐native species, which has led to the implementation of numerous eradication campaigns for the conservation of these keystone and highly vulnerable species. Although the benefits of eradication of invasive non‐native species for seabird conservation have been demonstrated, the recovery ...
Martin Philippe‐Lesaffre +8 more
wiley +1 more source
Ciência Animal Brasileira, 2010 Sob condições de clima tropical da Baixada Fluminense do Rio de janeiro, foi desenvolvido um experimento com amostras de fezes depositadas em gramínea Tyfton 85 (Cynodon spp. Cv.Tifton 85), no início de cada estação do ano.
Simone Quinelato +4 more
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Efeito do fósforo suplementar sobre o desempenho reprodutivo de vacas de corte em pastagem de Brachiaria humidicola [PDF]
Pesquisa Agropecuária Brasileira, 2000 O objetivo deste experimento foi observar e quantificar o efeito de duas misturas minerais (ad libitum), uma sem (M) e outra com fósforo suplementar (MP), sobre o desempenho produtivo e reprodutivo de vacas de cria neloradas em pastejo de Brachiaria ...
LUIZ ROBERTO LOPES S'THIAGO +4 more
doaj +1 more source
Smaller species experience mild adversity under shading in an old‐field plant community
Ecology and Evolution, Volume 12, Issue 6, June 2022., 2022 We characterized the light environment and tested for evidence of a size‐advantage in light competition in an old‐field plant community. We found that plots with taller species cast more shade, and that smaller species were less abundant and diverse in plots where light penetration was low; however, variation in mean plot height explained less than 10%
Kelly C. Balfour +5 more
wiley +1 more source
Revista Brasileira de Parasitologia Veterinária, 2009 Esse estudo foi realizado no período de julho de 2003 a novembro de 2004, para avaliar o desenvolvimento, a sobrevivência, a migração das larvas infectantes em gramínea "coast cross" (Cynodon dactylon) e o horário de maior disponibilidade, em condições ...
Melissa C. M. do Couto +7 more
doaj +1 more source