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Timo Rittweg (otolitimo.bsky.social) Profile
Timo Rittweg (otolitimo.bsky.social)

@RittwegTimo

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Fisheries scientist, angler, diver, small-scale chรฉf

Germany
Joined October 2020
Don't wanna be here? Send us removal request.
@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
8 months
RT @sMarten_Winter: ### NEW FUNDING OPPORTUNITY ###. Global Joint Synthesis Call ."๐—œ๐—ป๐˜๐—ฒ๐—ฟ๐—ฎ๐—ฐ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ฏ๐—ฒ๐˜๐˜„๐—ฒ๐—ฒ๐—ป ๐—•๐—ถ๐—ผ๐—ฑ๐—ถ๐˜ƒ๐—ฒ๐—ฟ๐˜€๐—ถ๐˜๐˜† ๐—ฎ๐—ป๐—ฑ ๐—–๐—น๐—ถ๐—บ๐—ฎ๐˜๐—ฒ ๐—–๐—ต๐—ฎ๐—ป๐—ด๐—ฒ"โ€ฆ.
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
8 months
Seems like that OTHER platform is picking up in recent times, so finally (after creating an account ages ago and then just letting it sit there), I made my way over and will stop posting here soon(ish). Find me on Bluesky under Cheers โœŒ๏ธ.
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
In conclusion, we found higher phenotypic and ecotype diversity than expected in coastal pike, and a behavioral gradient spanning between habitat extremes, which indicates a partially migratory metapopulation. ๐Ÿงต10/10 #otoliths #Science #scicomm #pike
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
โ€ฆ we did not detect any differences in lifelong growth, assessed by individual- and phenotype level hierarchiacal von Bertalanffy growth models. This might indicate similar lifelong fitness between the ecotypes, which may be a mechanism for sympatric coexistence. ๐Ÿงต9/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Looking at individual-level and phenotype-level growth, we detected life-stage specific difference between the ecotypes, along with a generally positive effect of warm temperatures at young ages and a negative effect of high salinities lifelong. Howeverโ€ฆ. ๐Ÿงต8/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Matching phenoptyes to genotypes, we found three of the behavioral phenotypes to be significantly different from all others, suggesting them as ecotypes. A freshwater ecotype expressing freshwater residency or anadromy, a brackish ecotype and a โ€žcross-habitatโ€œ ecotype ๐Ÿงต7/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Using 33 adaptive SNP markers, we genotyped our pike and found 4 different genotypes associated with freshwater, anadromous and brackish lifestyles (two genotypes for brackish habitats, but, spoilers, we were not able to resolve the distinction of those two. ๐Ÿ˜…) ๐Ÿงต6/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Distribution of the behavioral phenotypes strongly followed the salinity gradient, suggesting salinity as a major structuring factor of the pike population in the brackish lagoons. ๐Ÿงต5/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Pike spanned a gradient of different phenotypes between the two habitat extremes of freshwater/brackish residency, with anadromous pike and an intermediary cross-habitat type connecting them! ๐Ÿงต4/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Measuring high-resolution oxygen isotopes and strontium ratios in otoliths, we described lifelong thermosaline niche use. We used machine learning time series clustering algorithms to cluster individuals with similar life histories into behavioral phenotypes. ๐Ÿงต3/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
We investigated thermosaline habitat use of northern pike, matching behavior to genetic makeup to describe behaviorally and genetically distinct ecotypes. Our study area were interconnected brackish lagoons and freshwater tributaries in the southern Baltic Sea in Germany. ๐Ÿงต2/10
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
9 months
Paper alert! Super stoked that this is finally out in #Oecologia. Been busy for a couple of days, so here a slightly delayed ๐Ÿงต1/10.
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@RArlinghausFish
Robert Arlinghaus (moved to Blue Sky)
10 months
Our new paper on coastal #pike #ecotypes led by @RittwegTimo and with @clivetrue in Oecologia is out
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
10 months
A journey of four and a half years comes to a close. Emotional moment! ๐Ÿฅณ Big thanks to all my supervisors that led me through this adventure, in particular @RArlinghausFish & @clivetrue. Here's to future endeavors! ๐Ÿ‘จ๐Ÿปโ€๐Ÿ”ฌ๐ŸŸ๐ŸŽฃ #PhD #phdlife #ScienceAdventure.
@RArlinghausFish
Robert Arlinghaus (moved to Blue Sky)
10 months
Dissertation on Baltic pike printed by @RittwegTimo. A special moment after 4+ years. Looks like it emerged from my shirt. Very proud supervisor! But still has to be submitted and defended. So now Dr. Rittweg yet.
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
1 year
Got my luggage back ๐Ÿฅณ Air Canada gets 0/10 for baggage retention from me, but delivery person gets 10/10 for efficient, concise communication! ๐Ÿ˜… #ISOECOL2024
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
1 year
Rocky start to #ISOECOL2024 ๐Ÿ˜… Flight 2 h delayed (arrived at 02:30 this morning), baggage and poster remained somewhere in Montreal (note: I was forced to check in my carry-on due to overbooked flight in Berlin ๐Ÿ˜‘) But got my poster printed again, so now the fun bit begins ๐Ÿ˜.
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
1 year
Montreal, my penultimate station on the long way from Berlin to #ISOECOL2024 Quick dinner and then starting the last leg ๐Ÿ˜
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
1 year
RT @otolithgirl: Deep learning with #trophic #connectivity & #systematic review gurus at @SeaUnicorn2020. Many of the key Qs cross all sciโ€ฆ.
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
1 year
RT @conphysjournal: This article reviews the otolith-isotope method for estimating field metabolic rate, providing links to higher levels oโ€ฆ.
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@RittwegTimo
Timo Rittweg (otolitimo.bsky.social)
1 year
Combining snorkeling surveys of macrophytes with sampling fish. This northern pike was snug in the plants, apparently thinking "if I don't see you, you don't see me ๐Ÿ™ˆ". Thought I'd try to catch it for the hell of it. but it actually worked! ๐Ÿ˜ณ๐Ÿ˜…
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