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 +2 more
doaj +1 more source
Tempo and mode of performance evolution across multiple independent origins of adhesive toe pads in lizards [PDF]
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. +17 more
core +3 more sources
Changing Feeding Levels Reveal Plasticity in Elasmobranch Life History Strategies
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 +3 more
wiley +1 more source
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
Using life history to predict outcomes of conservation translocations of herpetofauna
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
Live food organisms – Artemia Part II - Artemia cyst and biomass production [PDF]
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
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The chloride channel cystic fibrosis transmembrane conductance regulator (CFTR) controls cellular quiescence by hyperpolarizing the cell membrane during diapause in the crustacean Artemia [PDF]
Cellular quiescence, a reversible state in which growth, proliferation, and other cellular activities are arrested, is important for self-renewal, differentiation, development, regeneration, and stress resistance.
Bossier, Peter +10 more
core +1 more source
Observations on Phallocryptus spinosa (Branchiopoda, Anostraca) populations from the high plateaus of Northeastern Algeria [PDF]
Phallocryptus spinosa (Thamnocephalidae) is a small primitive crustacean which lives in temporary saline pools of the Palaearctic region called Chott, Sebkha, Garâa or Daya in North Africa. Data on its biology and life history are very scarce despite its
core
Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing
ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa +7 more
wiley +1 more source
The whale shark: Is the species endangered or vulnerable? [PDF]
Notable contributions summarising our knowledge of the known habits of the whale shark in general, and its occurrence in Indian coastal waters have been made by Gudger (1935), Chevey (1936) and Prater (1941).
Silas, E G
core

