Results 51 to 60 of about 1,879 (181)

Highly localised morphological diversity in the mayfly Cloeon tasmaniae Tillyard (Ephemeroptera; Baetidae), and a new synonomy with C. paradieniense Suter

Austral Entomology, Volume 65, Issue 1, February 2026.
Abstract Ambiguity over the features that differentiate two nominal species of baetid mayflies, Cloeon paradieniense Suter and C. tasmaniae Tillyard, in southeast Australia led to a detailed analysis of the morphology and meristics of specimens from Victoria, South Australia and, in particular, Tasmania, where both species have been reported.
Ronald E. Thresher, Phillip J. Suter
wiley   +1 more source

The Overlooked Threat of Global Warming on Elasmobranch Fertility

Fish and Fisheries, Volume 27, Issue 1, Page 41-55, January 2026.
ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon, Eric Feunteun, Alexandre Carpentier, Anne Lizé   +3 more
wiley   +1 more source

Early life sensory ability—ventilatory responses of thornback ray embryos (Raja clavata) to predator-type electric fields [PDF]

, 2015
Predator avoidance is fundamental for survival and it can be particularly challenging for prey animals if physical movement away from a predatory threat is restricted. Many sharks and rays begin life within an egg capsule that is attached to the sea bed.
Ballard, Bedore, Bigelow, Bodznick, Clark, Cousseau, Cox, Dulvy, Dulvy, Evans, Foulley, Freitas, Gannon, Giguère, Gill, Herskin, Hoff, Kempster, Kimber, Leonard, Long, Lucifora, Luer, Martin, Moore, Oulton, Peters, Post, Richards, Semeniuk, Semeniuk, Sih, Sisneros, Thomason, Tricas, Venables, Warkentin, Warkentin   +37 more
core   +1 more source

Changing Feeding Levels Reveal Plasticity in Elasmobranch Life History Strategies

Ecology Letters, Volume 28, Issue 9, September 2025.
We analysed life history traits of 151 elasmobranch species for two contrasting feeding levels in a principal components analysis. Two axes, reproductive output and generation turnover, structure elasmobranch life history strategies. Wefound that species' positions in this life history space are dynamic, shifting towards higher reproductive output as ...
Sol Lucas, Per Berggren, Ellen Barrowclift, Isabel M. Smallegange   +3 more
wiley   +1 more source

Embryos of the viviparous dermapteran, Arixenia esau develop sequentially in two compartments: terminal ovarian follicles and the uterus.

PLoS ONE, 2013
Three main reproductive strategies have been described among insects: most common oviparity, ovoviviparity and viviparity. In the latter strategy, the embryonic development takes place within the body of the mother which provides gas exchange and ...
Waclaw Tworzydlo, Elzbieta Kisiel, Szczepan M Bilinski   +2 more
doaj   +1 more source

Using life history to predict outcomes of conservation translocations of herpetofauna

Animal Conservation, Volume 28, Issue 4, Page 592-606, August 2025.
We collected data on key life history traits for all herpetofauna profiled in the IUCN Global Conservation Translocation Perspectives series to examine how life history can predict outcomes and difficulties of conservation translocations. The relationships we found provide important insights for conservation practitioners that can be used in the ...
M.R. Parker, L.A. Fitzgerald
wiley   +1 more source

Tempo and mode of performance evolution across multiple independent origins of adhesive toe pads in lizards [PDF]

, 2017
Understanding macroevolutionary dynamics of trait evolution is an important endeavor in evolutionary biology. Ecological opportunity can liberate a trait as it diversifies through trait space, while genetic and selective constraints can limit ...
Austin C. C., Burnham K. P., Eastman J. M., Haacke W., Harmon L. J., Higham T. E., Maderson P., Moen D. S., Peattie A. M., Peterson J. A., Peterson J. A., Russell A. P., Sadlier R. A., Stewart G. R., Title P. O., Vucko M. J., Wainwright P. C., Wilson S.   +17 more
core   +3 more sources

Reproductive biology of the skates Sympterygia acuta Garman, 1877 and S. bonapartii Müller & Henle, 1841 (Chondrichthyes: Rajoidei) in south Brazil

Neotropical Ichthyology
The present study analyzed the sexual development, sizes at maturity and morphometric relationships for both sexes of Sympterygia acutaand S. bonapartii, endemic of south-western Atlantic Ocean.
Alexander Basallo, Maria Cristina Oddone
doaj   +1 more source

Extreme plasticity in reproductive biology of an oviparous lizard [PDF]

Ecology and Evolution, 2018
AbstractMost oviparous squamate reptiles lay their eggs when embryos have completed less than one‐third of development, with the remaining two‐thirds spent in an external nest. Even when females facultatively retain eggs in dry or cold conditions, such retention generally causes only a minor (<10%) decrease in subsequent incubation periods.
Mats Olsson, Lisa Loeb, Willow Lindsay, Erik Wapstra, Luisa Fitzpatrick, Richard Shine   +5 more
openaire   +3 more sources

Live food organisms – Artemia Part II - Artemia cyst and biomass production [PDF]

, 1987
The brine shrimp, Artemia a crustacean which is naturally found in hypersaline waters throughout most of the world, has become the most important source of live-feed for the last twenty years.
Pandian, S K
core