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Alternative mating pattern in is associated with polyandry and male-biased sex ratio.
MicroPubl Biol
January 2025
Shimane University, Matsue, Shimane, Japan.
Although cephalopods are primarily polyandrous, genetic evidence revealed rare monogamy in . Here, we studied the sister species . We found that copulation began in early July, with egg spawning occurring in early August.
View Article and Find Full Text PDFInsights Into the Reproduction and Maturity of the Spinetail Devil Ray (Mobula mobular).
Zoo Biol
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Fish Department, Osaka Aquarium Kaiyukan, Osaka, Osaka, Japan.
Little is known about the reproductive biology of the endangered spinetail devil ray (Mobula mobular). Here, we describe the reproductive behavior, estimates of age, size at maturity, embryonic development in the uterine cavity, and the morphology of a neonate produced by a male and female ray kept in Osaka Aquarium KAIYUKAN for 7.5 years.
View Article and Find Full Text PDFDiscovery of Peptidic Siderophore Degradation by Screening Natural Product Profiles in Marine-Derived Bacterial Mono- and Cocultures.
Biochemistry
January 2025
School of Chemistry and Biochemistry, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia 30332, United States.
Coral reefs are hotspots of marine biodiversity, which results in the synthesis of a wide variety of compounds with unique molecular scaffolds, and bioactivities, rendering reefs an ecosystem of interest. The chemodiversity stems from the intricate relationships between inhabitants of the reef, as the chemistry produced partakes in intra- and interspecies communication, settlement, nutrient acquisition, and defense. However, the coral reefs are declining at an unprecedented rate due to climate change, pollution, and increased incidence of pathogenic diseases.
View Article and Find Full Text PDFTerritorial aggression is widespread across the animal kingdom and is expressed in diverse ecological and social contexts. In addition, there are marked variations in the degree of male reproductive territoriality within and between species. These differences are often attributed to genetic components.
View Article and Find Full Text PDFInvestigation and Treatment of Infertility in a Female Black Rhinoceros (Diceros bicornis).
Zoo Biol
January 2025
Taronga Conservation Society Australia, Taronga Institute of Science and Learning, Mosman New South Wales 2088, Taronga Western Plains Zoo, Dubbo, New South Wales, Australia.
A zoo-based, 11-year-old, uniparous southern black rhinoceros (Diceros bicornis minor) failed to conceive after weaning a calf. Behavioral observation and fecal progestagen monitoring confirmed irregular estrous cycles. Serial transrectal reproductive ultrasound examination revealed the cause to be recurrent anovulatory hemorrhagic follicles (AHFs).
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