Evidence of dystocia in an oviparous shark
Journal of Fish BiologyAbstractDystocia, or obstructed labor, is a well‐documented phenomenon in various captive vertebrates, including fish. However, despite the documentation of dystocia in several viviparous (live‐bearing) Chondrichthyan species (i.e., sharks, rays, skates, and chimaeras), there are no reports to date of dystocia in any oviparous (egg‐laying) species ...
Carolyn R. Wheeler, Jodie L. Rummer
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Viviparity Stimulates Diversification in an Order of Fish
, 2016 International audienceSpecies richness is distributed unevenly across the tree of life and this may be influenced by the evolution of novel phenotypes that promote diversification.
Helmstetter, AJ +5 more
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Gestation alters the gut microbiota of an oviparous lizard
FEMS Microbiology Ecology, 2019 ABSTRACTMammalian pregnancy can alter the diversity, membership and structure of the maternal gut microbiota, but it is unclear whether this phenomenon occurs in vertebrates with different reproductive strategies. We conducted 16S rRNA bacterial inventories to investigate whether oviparous lizards exhibit shifts in gut microbiota similar to those ...
Brian K Trevelline +3 more
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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
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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 +37 more
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The impact of egg incubation temperature on the personality of oviparous reptiles [PDF]
Animal Cognition, 2016 Personality traits, defined as differences in the behavior of individual animals of the same species that are consistent over time and context, such as 'boldness,' have been shown to be both heritable and be influenced by external factors, such as predation pressure.
Harry Siviter +5 more
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Observations on Phallocryptus spinosa (Branchiopoda, Anostraca) populations from the high plateaus of Northeastern Algeria [PDF]
, 2015 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
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The whale shark: Is the species endangered or vulnerable? [PDF]
, 1989 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
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Clones, hermaphrodites and pregnancies: Nature's oddities offer evolutionary lessons on reproduction [PDF]
, 2011 I love the term 'natural history' because it encapsulates the sentiment that nature's operations have evolutionary etiologies. Charles Darwin was a natural historian par excellence and his elucidation of natural selection, artificial selection, and ...
Avise, JC
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Facultative oviparity in a viviparous skink ( Saiphos equalis ) [PDF]
Biology Letters, 2019 Abstract Facultative changes in parity mode (oviparity to viviparity and vice versa) are rare in vertebrates, yet offer fascinating opportunities to investigate the role of reproductive lability in parity mode evolution. Here, we report apparent facultative oviparity by a viviparous female of the bimodally reproductive skink Saiphos ...
Melanie K. Laird +2 more
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