Remarks on the American eel (Anguilla rostrata LeSueur). Sizes of elvers entering streams; the relative abundance of adult males and females; and present economic importance of eels in North America

Baeomyia n.g. is described for a group of small (2–3 mm long) tachinids belonging to the Siphona group of the Siphonini. All known specimens were collected in western North America, with two species recorded from southern British Columbia (Baeomyia xanthogaster n. sp. and Baeomyia juniperi n. sp.) and three species recorded from desert localities in the American Southwest (type-species Baeomyia hurdi (Reinhard), Baeomyia antennata n. sp. and Baeomyia sonorensis n. sp.). Keys to adult males and females are provided for separation of species. Systematics of the Siphonini and Siphona group are reviewed, including a discussion of the synapomorphies upon which each is defined. Baeomyia species are inferred to form a monophyletic taxon within the Siphona group on the basis of five synapomorphies, though the relationship between the genus and other Siphona group taxa is unresolved. The apparent disjunction of Baeomyia species into northern and southern ranges may be the result of relatively recent speciation events, because differences among species are slight. A detailed zoogeographic analysis of the distribution pattern must await further phylogenetic data.

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Interpretation of geographic variation in size of American eel Anguilla rostrata elvers on the Atlantic coast of North America using their life history and otolith ageing

Marine Ecology Progress Series ◽

10.3354/meps168035 ◽

1998 ◽

Vol 168 ◽

pp. 35-43 ◽

Cited By ~ 40

Author(s):

CH Wang ◽

WN Tzeng

Keyword(s):

Life History ◽

North America ◽

Geographic Variation ◽

Atlantic Coast ◽

Anguilla Rostrata ◽

American Eel

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Relative Abundance, Food Habits, and Age of the American Eel, Anguilla rostrata (LeSueur), in Certain New Jersey Streams

Transactions of the American Fisheries Society ◽

10.1577/1548-8659(1970)99<54:rafhaa>2.0.co;2 ◽

1970 ◽

Vol 99 (1) ◽

pp. 54-59 ◽

Cited By ~ 30

Author(s):

John C. Ogden

Keyword(s):

New Jersey ◽

Relative Abundance ◽

Food Habits ◽

Anguilla Rostrata ◽

American Eel

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REVISION OF THE COSTATE SPECIES OF ALTICA MÜLLER OF NORTH AMERICA NORTH OF MEXICO (COLEOPTERA: CHRYSOMELIDAE)

The Canadian Entomologist ◽

10.4039/ent127295-3 ◽

1995 ◽

Vol 127 (3) ◽

pp. 295-411 ◽

Cited By ~ 6

Author(s):

Laurent LeSage

Keyword(s):

North America ◽

Host Plants ◽

Economic Importance ◽

New Subspecies ◽

Males And Females ◽

North America North

AbstractEight species and seven subspecies of costate Altica are described and illustrated. Lectotypes are designated for Altica alni Harris, A. ambiens LeConte, A. prasina LeConte, A. subplicata LeConte, and Graptodera plicipennis Mannerheim. A neotype is designated for Altica bimarginata Say. Two subspecies are recognized for A. ambiens, three for A. bimarginata, and two for A. prasina. Graptodera plicipennis is removed from synonymy and given a new subspecific status under Altica bimarginata, and A. populi Brown is given a new subspecific status under A. prasina. Altica latiplicata Blake is placed in synonymy with A. ambiens LeConte. Altica bimarginata labradorensis LeSage is described as a new subspecies of A. bimarginata. Keys are given for males and females, and data are provided on distribution, host plants, biology, parasites, predators, and economic importance of these species.

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The Common Natural Products (S)-α-Terpineol and (E)-2-Hexenol are Important Pheromone Components of Megacyllene antennata (Coleoptera: Cerambycidae)

Environmental Entomology ◽

10.1093/ee/nvy126 ◽

2018 ◽

Vol 47 (6) ◽

pp. 1547-1552 ◽

Cited By ~ 5

Author(s):

Robert F Mitchell ◽

Ann M Ray ◽

Lawrence M Hanks ◽

Jocelyn G Millar

Keyword(s):

Natural Products ◽

North America ◽

Host Plants ◽

Adult Males ◽

Pheromone Components ◽

Aromatic Alcohols ◽

The Common ◽

Males And Females ◽

Woody Tissues

Abstract We report here the pheromone of Megacyllene antennata (White) (Coleoptera: Cerambycidae), a species native to southwestern North America whose larvae feed in woody tissues of mesquite (Prosopis species; Fabaceae). Adult males sex-specifically produced a blend of eight common natural products, including the monoterpene alcohol (S)-α-terpineol; the monoterpenes (S)-limonene and terpinolene; the aromatic alcohols (R)-1-phenylethanol and 2-phenylethanol; and (E)-2-hexenol, (E)-2-hexenal, and 1-hexanol. Individual males produced the components in varying amounts, but (S)-α-terpineol and (E)-2-hexenal were always present and together constituted the majority of the blend. A synthetic reconstruction of the complete blend attracted both males and females of M. antennata during field bioassays, as did all subsets of the blend that included (S)-α-terpineol and (E)-2-hexenol. Adults were most strongly attracted to blends of the latter two compounds when in ratios approaching parity. Neither of the compounds were present in the bouquet of volatiles emitted by host plants of the larvae.

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Size-At-Age Variability and Sexual Dimorphism of Morphometric Characteristics in the Late Ontogenesis of the Marsh Frog, Pelophylax Ridibundus (Anura, Ranidae), from Terrytory of Crimea

Vestnik Zoologii ◽

10.2478/vzoo-2019-0031 ◽

2019 ◽

Vol 53 (4) ◽

pp. 325-334

Author(s):

V. N. Peskov ◽

N. A. Petrenko ◽

V. Yu. Reminnyi

Keyword(s):

Age Groups ◽

The Body ◽

Adult Males ◽

Morphometric Characteristics ◽

Morphometric Characters ◽

Mean Values ◽

Marsh Frog ◽

Males And Females ◽

Size At Age ◽

Linear Body

Abstract We study size-at-age and sexual variability of morphometric characteristics of the marsh frog. According to the size of the body, males were divided into three size-age groups (juvenis, subadultus, adultus), females — into four groups (juvenis, subadultus, adultus, adultus-I). We found that the chronological age of frogs (skeletochronology) does not always correspond to their biological age (size and proportions of the body). We noted that the semi-adult males are reliably larger than females by mean values of 26 studied morphometric characters. Males and females of “adultus” group do not differ by linear body size, significant differences were found in body proportions (7 characters). For the females of “adultus-I” group, the mean values of 26 characters are significantly larger than for “adultus” males. The results of our study showed that with the age of the marsh frog, the level of exhibition, directionality and structure of morphometric sex differences changes.

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A Study on Family Strength of Adult Males and Females

Journal of Next-generation Convergence Information Services Technology ◽

10.29056/jncist.2017.12.05 ◽

2017 ◽

Vol 6 (2) ◽

pp. 51-65

Author(s):

Hyungwon Park

Keyword(s):

Adult Males ◽

Family Strength ◽

Males And Females

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INVASION OF NORTH AMERICA BY THE DIATOM DISCOSTELLA ASTEROCOSTATA: MORPHOMETRIC AND RELATIVE ABUNDANCE ANALYSES FROM LAKES IN INDIANA AND ARKANSAS

10.1130/abs/2018am-321535 ◽

2018 ◽

Author(s):

Hillary L. Johnson ◽

◽

Jeffery R. Stone ◽

Andrew J. Alverson

Keyword(s):

North America ◽

Relative Abundance

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Sex Difference in Self-Reported Sexual Functioning Among Frail Older Adults

Innovation in Aging ◽

10.1093/geroni/igaa057.1002 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 313-313

Author(s):

Brianne Olivieri-Mui ◽

Sandra Shi ◽

Ellen McCarthy ◽

Dae Kim

Keyword(s):

Older Adults ◽

Logistic Regression ◽

Sex Differences ◽

Sexual Function ◽

Older Adult ◽

Sexual Functioning ◽

Social Life ◽

Well Being ◽

Adult Males ◽

Males And Females

Abstract Frailty may differentially impact how older adult males and females perceive sexual functioning, an important part of well-being. We assessed the level of frailty (robust, pre-frail, frail) for anyone with data on 11 sexual functioning questions asked in wave 2 of the National Social Life, Health, and Aging Project, 2010-2011 (n=2060). Questions covered five domains: overall sexual function (OSF), sexual function anxiety (SFA), changes in sexual function (CSF), erectile/vaginal dysfunction (EVD), and masturbation. Logistic regression identified sex differences in frailty and reporting worse sexual functioning. Linear regression predicted the number of domains reported as worse. Among males (n=1057), pre-frailty meant higher odds of reporting SFA (OR 1.8 95%CI 1.2-6.6), CSF (OR 1.7 95%CI 1.1-2.7), and EVD (OR 1.5 95%CI 1.0-2.2). Among females (n=1003), there was no difference in reporting by frailty. Females were more likely to report worse OSF (Robust: OR 7.4, 95%CI 4.8-11.4; Pre-frail: OR 6.2, 95%CI 3.9-9.9; Frail: OR 3.4 95%CI 1.7-6.6), but less likely to report SFA (Robust OR .3, 95%CI .2-.5; Pre-frail OR .2, 95%CI .1-.3; Frail OR .2 95%CI .1-.3). Pre-frail and frail females reported fewer domains as worse (Pre-frail coefficient -0.21 SE 0.09, Frail -0.43 SE 0.14). As frailty worsened, males reported more domains as worse (Pre-frail 0.24 SE 0.07, Frail 0.29 SE 0.08). Self-reported sexual functioning differs by sex at all levels of frailty, and reporting by males, but not females, changes with frailty. Providers should be aware that sexual functioning is of importance to both sexes despite varying degrees of frailty.

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