@article {1468, title = {Structure des communaut{\'e}s de Phanaeini (Coleoptera : Scarabaeidae) de Guyane : {\'e}tude par {\'e}chantillonnage massif au pi{\`e}ge d{\textquoteright}interception}, journal = {Annales de la Societe Entomologique de France (N.S.)}, volume = {53}, year = {2017}, pages = {143-161}, chapter = {143}, abstract = {

Seasonality and community structure of Phanaeini (Coleoptera: Scarabaeidae) in French Guiana : study by mass sampling using large flight interception traps. Phanaeini is a neotropical tribe of scarabs mostly dung or carrion feeders, generally of large size. This paper analyses data collected with large window flight interception traps set on nine forest sites in French Guiana with a primary goal of biotic inventory. The study deals with three main questions: 1) What is the spatial structure of communities and are there some species indicators of secondary forests and others of pristine conditions? 2) What is the temporal structure of the community and is there a stable pattern of seasonality between years and sites? 3) Between close species, is there a temporal asynchrony? Our samples contain more than 9,700 identified specimens, nine complete year series on four sites including a four years continuous survey near Cayenne. We found a significantly lower diversity (Shannon and Simpson index) on the most fragmented and hunted sites. A more equitable repartition of species and a relative abundance of the larger species appear typical of undisturbed sites. Other observations reinforce the hypothesis that there is a fast and huge modification in Phanaeini community structure on the most accessible and disturbed sites. Seasonal pattern shows an abundance peak at the beginning of the rainy season (December or January), a medium abundance during the rainy season with sometimes secondary peaks and a low to very low activity during the dry season. The pattern is rather consistent between years but changes with sampling site. It is however different from the results of other studies using pitfall baited traps in Amazonian and Guyanese forests. These studies show much less clear temporal pattern or no seasonal change. There is no obvious pattern of niche sharing by phenological differences between species. The methodological differences of sampling between baited traps and window flight traps are eventually discussed. Due to its passive way of collecting, interception trap is considered as quite relevant for studying flight activity spatio-temporal patterns of Scarabaeinae. This aspect may explain some differences in seasonality patterns compared to other studies.

La tribu des Phanaeini forme un groupe de Scarab\éides n\éotropicaux majoritairement copro-n\écrophages de grande taille. Cet article exploite des donn\ées collect\ées avec de grands pi\èges d\’interception vitr\és sur neuf sites forestiers de Guyane dans un but premier d\’inventaire taxonomique et faunistique. Les questions \étudi\ées sont : 1) Comment se structurent les communaut\és dans l\’espace et y a-t-il une corr\élation avec les impacts anthropiques (isolement, perte de grande faune mammalienne) ? 2) Quel est le patron de saisonnalit\é de la communaut\é ? 3) Y a-t-il un \éventuel d\écalage de ph\énologie entre esp\èces proches ? Le mat\ériel comprend plus de 9700 sp\écimens identifi\és, neuf s\éries annuelles compl\ètes, r\écolt\é sur quatre sites dont un a \ét\é suivi plus de quatre ann\ées cons\écutives. La diversit\é est significativement plus faible sur les sites d\égrad\és. La r\épartition \équitable des esp\èces, avec une relative abondance de quelques esp\èces de grande taille, s\’av\ère caract\éristique des sites faiblement impact\és par les activit\és humaines. Des donn\ées d\’observations ponctuelles confortent l\’hypoth\èse d\’une d\égradation assez rapide et de grande ampleur dans les sites les plus accessibles. Le patron principal de saisonnalit\é montre un pic d\’abondance en d\ébut de saison des pluies (d\écembre, janvier), une abondance moyenne en saison des pluies avec parfois des pics secondaires et une activit\é faible \à tr\ès faible en saison s\èche. Ce patron semble relativement stable entre ann\ées mais d\épendant du site d\’\échantillonnage. Il diff\ère cependant d\’autres \études dans des zones proches qui montrent un patron relativement stable ou non li\é au d\ébut des pluies. Il n\’y a pas de signe \évident de partage de la niche temporelle par d\écalage de saisonnalit\é entre esp\èces. Finalement, les aspects m\éthodologiques sont discut\és en comparant la technique du pitfall app\ât\é avec le pi\ège d\’interception. Par son caract\ère passif, le pi\ège vitre appara\ît comme une m\éthode pertinente pour \étudier les variations spatio-temporelles de l\’activit\é de vol des Scarabaeinae.

}, keywords = {conservation, Coprophanaeus, m{\'e}thode de collecte, Oxysternon, Phanaeus, ph{\'e}nologie}, doi = {10.1080/00379271.2017.1319294}, author = {TOUROULT, J. and DALENS, P.-H. and GIUGLARIS, J.-L. and LAPEZE, J. and BOILLY, O.} } @article {1466, title = {Les Phanaeini de Guyane: liste comment{\'e}e, cl{\'e}s et iconographie (Coleoptera, Scarabaeidae)}, journal = {In: Touroult, J. (coord.). Contribution {\`a} l{\textquoteright}{\'e}tude des Col{\'e}opt{\`e}res de Guyane. Suppl{\'e}ment au Bulletin de liaison d{\textquoteright}ACOREP-France {\guillemotleft} Le Col{\'e}opt{\'e}riste {\guillemotright}}, volume = {10}, year = {2016}, pages = {86-97}, chapter = {86}, abstract = {

The Phanaeini of French Guiana: annotated checklist, keys and photographs (Coleoptera, Scarabaeidae). Based on literature and recent samplings, 22 species of Phanaeini Scarabs are recorded from French Guiana in the genera Coprophanaeus (5 species), Dendropaemon (8 species), Diabroctis (1 species), Oxysternon (4 species), Phanaeus (3 species) and Sulcophanaeus (1 species). A key of genera and species, adapted to French Guiana\’s fauna is provided. Principal ecological traits are summarized: diet, activity rhythm and estimated degree of scarcity. Collecting localities are also provided. The species are pictured, including Dendropaemon refulgens for which we show the second known specimen.

}, author = {BOILLY, O. and LAPEZE, J. and DALENS, P.-H. and GIUGLARIS, J.-L. and TOUROULT, J.} }